An industrial waste acid distillation and concentration tower

Abstract

The present invention belongs to the technical field of acidic wastewater treatment, and specifically is an industrial waste acid distillation and concentration tower, comprising a tower body, a cover body rotatably provided on one side of the upper end of the tower body, a steam pipe provided in the middle of one side of the cover body, an electric heating coil provided on one side of the inner cavity of the cover body, a drain pipe provided on one side of the lower end of the tower body, a filter cartridge rotatably provided in the middle of the lower end of the inner cavity of the tower body, a fixed block fixedly connected to one end of the rear side of the upper end face of the mounting ring, a liquid inlet pipe passing through and fixedly connected to the upper side of the fixed block, a liquid inlet port provided at the upper end of the liquid inlet pipe, the liquid inlet pipe being a hose, and a double scraping and self-cleaning dredging mechanism provided on the tower body to prevent impurities from clogging the filter holes. The present invention removes impurities in the waste acid by filtering first and then distilling and concentrating, thereby avoiding the situation where impurities in the waste acid react with the steam generated during the distillation process to form new compounds, thereby affecting the purity and quality of the distilled product.

Description

Technical Field

[0001] The invention belongs to the technical field of acid wastewater treatment, in particular to an industrial waste acid distillation and concentration tower. Background Art

[0002] Industrial waste acid refers to waste acidic substances generated during the industrial production process, usually from processes such as nitration, esterification, sulfonation, alkylation, catalysis and gas drying of organic matter, or specific processes such as titanium dioxide production, steel pickling and gas drying. Since industrial waste acid and waste liquid contain a lot of water, the concentration of the waste acid and waste liquid is low and cannot be used. However, industrial waste acid can be purified by distillation for reuse.

[0003] Patent publication number CN220537527U discloses a waste acid concentration and distillation system, comprising a distillation mechanism, a vacuum extraction mechanism, and a heating and cooling device. The distillation mechanism includes a still, heat exchange tubes, a finned tube air-cooled condenser, and a distilled water collection tank. The heat exchange tubes are located at the lower end of the still and are used to distill and heat the waste acid within the still. The patented heating and cooling device utilizes both heating and cooling simultaneously. The waste acid within the still is first heated. Under negative pressure and high vacuum, the boiling point of the waste acid in the still is lowered and vaporized. Water vapor within the still rises to the finned tube air-cooled condenser, where it is cooled and liquefied. The vacuum extraction mechanism then extracts the non-condensable gases from the waste acid while simultaneously evaporating the still. This allows for the concentration and purification of water-rich waste acid from industrial waste phosphoric acid waste liquid, achieving waste acid reuse. The patented heating and cooling device features a simple structure and significant energy savings.

[0004] However, the above technical solution still has the following deficiencies in practical application:

[0005] Although waste acid with a high water content can be concentrated and purified to achieve the purpose of waste acid recycling, since the waste acid may contain some impurities from the production process, these impurities may react with the steam generated during the distillation concentration process to form new compounds, thereby reducing the purity of the distillation product and the final quality of the distillation product.

[0006] To this end, the present invention provides an industrial waste acid distillation and concentration tower. Summary of the Invention

[0007] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background art, the present invention proposes an industrial waste acid distillation and concentration tower.

[0008] The technical solution adopted by the present invention to solve its technical problems is: an industrial waste acid distillation and concentration tower, comprising a tower body, a cover body is rotatably provided on one side of the upper end of the tower body, a steam pipe is provided in the middle of one side of the cover body, an electric heating coil is provided on one side of the inner cavity of the cover body, a drain pipe is provided on one side of the lower end of the tower body, a filter cartridge is rotatably provided in the middle of the lower end of the inner cavity of the tower body, a plurality of filter holes are provided on the filter cartridge, a mounting ring is fixedly connected to the upper side of the tower body, a fixing block is fixedly connected to one end of the rear side of the upper end face of the mounting ring, a liquid inlet pipe is passed through and fixedly connected to the upper side of the fixing block, a liquid inlet port is provided at the upper end of the liquid inlet pipe, the liquid inlet pipe is a hose, and a double-scraping self-cleaning dredging mechanism is provided on the tower body to prevent impurities from clogging the filter holes;

[0009] The double-scraping self-cleaning dredging mechanism includes two sliding rods slidably connected to the upper and lower sides of the rear end of the tower body. The front end of the two sliding rods is fixedly connected to a dredging plate. The front end surface of the dredging plate is fixedly connected to a plurality of dredging columns matching the filter hole specifications. The dredging columns can pass through the filter hole and fit into the filter hole wall.

[0010] Preferably, a motor five is fixedly connected to the middle portion of the lower end surface of the tower body, and an output end of the motor five is fixedly connected to the middle portion of the lower end surface of the filter cartridge.

[0011] Preferably, a second electric push rod is fixedly connected to the middle of the rear side of the tower body, the piston end of the second electric push rod is fixedly connected to a transverse plate, and the upper and lower sides of the front end surface of the transverse plate are fixedly connected to the rear end of the second slide rod.

[0012] Preferably, a fixing plate is fixedly connected to the middle of the upper end of the rear side of the inner cavity of the tower body, and a sliding rod 1 is slidably connected to both the left and right ends of the front side of the fixing plate, and a scraper 2 is fixedly connected to the lower end of the sliding rod.

[0013] Preferably, an electric push rod 1 is fixedly connected to the middle part of the front side of the upper end face of the fixed plate, and the piston end of the electric push rod 1 is fixedly connected to the middle part of the upper end face of the scraper 2.

[0014] Preferably, the middle parts of the left and right sides of the upper end surface of the mounting ring are fixedly connected to support rods, the upper end of the support rods is fixedly connected to a slide plate, the inner side of the slide plate is slidably connected to the mounting plate, the left and right sides of the mounting plate are rotatably provided with connecting rod 1, the lower end of the connecting rod is rotatably provided with connecting rod 2, the lower end of the connecting rod 2 is rotatably provided with a displacement plate, the left and right sides of the displacement plate are slidably connected with sliders, the lower end of the slider is rotatably provided with a rotating rod, the lower end of the rotating rod is fixedly connected to a collection box, and a filter is provided on the lower side of the collection box.

[0015] Preferably, the front end surface of the left slide plate is fixedly connected to motor four, the output end of motor four is fixedly connected to threaded rod one, the front and rear ends of threaded rod one are rotatably set on the slide plate, threaded rod one is threadedly connected to the mounting plate, the left side of the front end surface of the mounting plate is fixedly connected to motor three, and the output end of motor three is fixedly connected to the upper end of connecting rod one on the left.

[0016] Preferably, the upper end of the slider is threadedly connected to a bidirectional threaded rod, and the left and right ends of the bidirectional threaded rod are rotatably set on the displacement plate. The right end of the displacement plate is fixedly connected to motor 2, and the output end of motor 2 is fixedly connected to the right end of the bidirectional threaded rod.

[0017] Preferably, a motor 1 is fixedly connected to the lower side of the front end surface of the slider, and the output end of the motor 1 is fixedly connected to the upper end of the rotating rod.

[0018] Preferably, one side of the upper end of the rotating rod is slidably connected to a T-shaped plate, the front and rear sides of the lower end of the T-shaped plate are fixedly connected to connecting rods, the lower end of the connecting rod is fixedly connected to scraper one, and the scraper one is slidably connected to the collecting box, the upper end of the rotating rod is fixedly connected to a fixed block, the upper end surface of the fixed block is fixedly connected to an electric push rod three, and the piston end of the electric push rod three is fixedly connected to the middle of the lower end surface of the T-shaped plate.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. The industrial waste acid distillation and concentration tower described in the present invention removes impurities in the waste acid by filtering first and then distilling and concentrating, thereby avoiding the impurities in the waste acid reacting with the steam generated during the distillation process to form new compounds, thereby affecting the purity and quality of the distilled product. In addition, when the filter holes are blocked, the filter cartridge can be driven to rotate intermittently, and each time the filter cartridge stops rotating, a row of filter holes are aligned with multiple dredging columns, and then the transverse plate is driven forward to move the dredging columns to move and pass through the filter holes, pushing off the blockage on the filter hole walls and the impurities attached to the filter holes, and then the dredging columns are reset, the filter cartridge continues to rotate, and the above operations are repeated to achieve a dredging effect on multiple filter holes, thereby avoiding the situation where impurities are blocked in the filter holes and then affect the subsequent filtering effect of the waste acid.

[0021] 2. In the industrial waste acid distillation and concentration tower described in the present invention, whenever the dredging column realizes a pushing action, before resetting, the scraper 2 can be driven to move, and its edge can be used to scrape off the impurities attached to the surface of the dredging column and drop them into the filter cartridge, and then the dredging column is driven to reset. This can avoid the impurities falling into the tower body when the dredging column is reset, and mixing with the waste acid again, thereby affecting the final quality of the distillation product.

[0022] 3. The industrial waste acid distillation and concentration tower described in the present invention can, when a certain amount of impurities accumulate at the bottom of the filter cartridge, first push the impurities to the middle of the filter cartridge through a scraper, then drive the two collecting boxes close to each other to collect the impurities, and then drive the collecting boxes out of the tower body to discharge the collected impurities, thereby realizing self-cleaning of the impurities accumulated at the bottom of the filter cartridge, further avoiding the situation where the filter holes are blocked by excessive accumulation of impurities, and the cleaning process does not affect the normal addition of waste acid. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 It is a schematic diagram of the complete three-dimensional structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure of a half-section of the tower body of the present invention;

[0026] Figure 3 It is a schematic diagram of the three-dimensional structure of the half-section of the filter cartridge;

[0027] Figure 4 yes Figure 3 A partial enlarged view of the middle part;

[0028] Figure 5 It is a schematic diagram of the partial three-dimensional structure inside the tower;

[0029] Figure 6 It is a schematic diagram of the local three-dimensional structure of the mounting plate;

[0030] Figure 7 It is a schematic diagram of the local three-dimensional structure at the liquid inlet;

[0031] Figure 8 It is a schematic diagram of the local three-dimensional structure of the collection box;

[0032] Figure 9 It is a schematic diagram of the five local three-dimensional structures of the motor;

[0033] Figure 10 It is a schematic diagram of the local three-dimensional structure of the scraper at two locations;

[0034] Figure 11 It is a schematic diagram of the three-dimensional structure of the cover.

[0035] Figure: 1, tower body; 2, mounting ring; 3, mounting plate; 4, support rod; 5, liquid inlet; 6, liquid inlet pipe; 7, chute plate; 8, filter cartridge; 9, filter hole; 10, displacement plate; 11, two-way threaded rod; 12, collection box; 13, scraper 1; 14, slider; 15, motor 1; 16, motor 2; 17, rotating rod; 18, T-plate; 19, electric push rod 3; 20, connecting rod; 21, fixing block; 2 2. Motor three; 23. Motor four; 24. Threaded rod one; 25. Connecting rod one; 26. Connecting rod two; 27. Motor five; 28. Drain pipe; 29. ​​Scraper two; 30. Electric push rod one; 31. Slide rod one; 32. Fixed plate; 33. Transverse plate; 34. Electric push rod two; 35. Slide rod two; 36. Dredging plate; 37. Dredging column; 38. Filter; 39. Cover; 40. Steam pipe; 41. Electric heating coil. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] Please refer to Figures 1-11 The present invention provides a technical solution: an industrial waste acid distillation and concentration tower, comprising a tower body 1, a cover body 39 is rotatably provided on one side of the upper end of the tower body 1, a steam pipe 40 is provided in the middle of one side of the cover body 39, an electric heating coil 41 is provided on one side of the inner cavity of the cover body 39, a drain pipe 28 is provided on one side of the lower end of the tower body 1, a filter cartridge 8 is rotatably provided in the middle of the lower end of the inner cavity of the tower body 1, a plurality of filter holes 9 are provided on the filter cartridge 8, a mounting ring 2 is sleeved and fixedly connected on the upper side of the tower body 1, a fixing block 21 is fixedly connected to one end of the rear side of the upper end face of the mounting ring 2, a liquid inlet pipe 6 is passed through and fixedly connected on the upper side of the fixing block 21, a liquid inlet port 5 is provided on the upper end of the liquid inlet pipe 6, and the liquid inlet pipe 6 is a hose, and a double-scraping self-cleaning dredging mechanism is provided on the tower body 1 to prevent impurities from clogging the filter holes 9;

[0038] The double-scraping self-cleaning dredging mechanism includes a sliding rod 35 slidably connected to the upper and lower sides of the rear end of the tower body 1. The front end of the sliding rod 35 is fixedly connected to a dredging plate 36. The front end surface of the dredging plate 36 is fixedly connected to a plurality of dredging columns 37 that match the specifications of the filter holes 9. The dredging columns 37 can pass through the filter holes 9 and fit into the hole walls of the filter holes 9.

[0039] In this embodiment, Figure 5 and Figure 9 As shown, the middle of the lower end surface of the tower body 1 is fixedly connected to the motor 5 27, and the output end of the motor 5 27 is fixedly connected to the middle of the lower end surface of the filter cartridge 8;

[0040] The middle part of the rear side of the tower body 1 is fixedly connected with an electric push rod 2 34, the piston end of the electric push rod 2 34 is fixedly connected with a transverse plate 33, and the upper and lower sides of the front end surface of the transverse plate 33 are fixedly connected to the rear end of the slide rod 2 35;

[0041] Specifically, the cover 39 is opened, the liquid inlet pipe 6 is moved and its end is extended into the filter cartridge 8, the waste acid is added through the liquid inlet 5, and flows into the filter cartridge 8 after passing through the liquid inlet pipe 6. The impurities in the waste acid are filtered by the filter hole 9. At the same time, the motor 5 27 can be used to drive the filter cartridge 8 to rotate, which can further intensify the throwing out of the waste acid under the action of centrifugal force, thereby improving the filtering effect. The filtered waste acid flows into the tower body 1, and then the liquid inlet pipe 6 is moved out of the tower body 1, and then the cover 39 is closed, and the electric heating coil 41 is used to heat the waste acid to evaporate the water in the waste acid, thereby realizing the concentration of the waste acid. At the same time, the water vapor will be discharged from the steam pipe 40. After the distillation and concentration is completed, the waste acid can be discharged by opening the valve of the liquid discharge pipe 28, thereby removing the impurities in the waste acid by filtering first and then distilling and concentrating, thereby avoiding the impurities in the waste acid from reacting with the steam generated during the distillation process to form new compounds. The filtration of the waste acid is improved by the addition of the filter cartridge 8 to the filter pores 9. In addition, when the filter pores 9 are filtering impurities, the filter pores 9 may be clogged by impurities. When waste acid is continuously added to the filter cartridge 8, the subsequent filtering effect of the waste acid will be affected. Therefore, in order to avoid this situation, when the filter pores 9 are clogged, the motor 5 27 can be used to drive the filter cartridge 8 to rotate intermittently, and each time the filter cartridge 8 stops rotating, a row of filter pores 9 is aligned with a plurality of dredging columns 37, and then the electric push rod 2 34 is started and drives the transverse plate 33 to move forward, so that the slide rod 2 35 slides on the tower body 1, so that the dredging columns 37 move and pass through the filter pores 9, pushing off the impurities clogged in the filter pores 9 and attached to the filter pores 9, and then the dredging columns 37 are reset, the filter cartridge 8 continues to rotate, and then the above operation is repeated, so that the dredging effect of the plurality of filter pores 9 can be achieved, thereby avoiding the situation that impurities are clogged in the filter pores 9 and thus affecting the subsequent filtering effect of the waste acid.

[0042] In this embodiment, Figure 5 and Figure 10 As shown, a fixed plate 32 is fixedly connected to the middle of the upper end of the inner cavity of the tower body 1, and a slide rod 31 is slidably connected to both the left and right ends of the front side of the fixed plate 32, and a scraper 29 is fixedly connected to the lower end of the slide rod 31;

[0043] The middle part of the front side of the upper end face of the fixed plate 32 is fixedly connected to the electric push rod 1 30, and the piston end of the electric push rod 1 30 is fixedly connected to the middle part of the upper end face of the scraper 2 29;

[0044] Specifically, in the above embodiment, when the dredging column 37 is used to dredge the filter hole 9, impurities may adhere to the front end surface of the dredging column 37. When the dredging column 37 is reset, these impurities may fall into the inside of the tower body 1 and mix with the filtered waste acid again, thereby affecting the quality of the distillation product. Therefore, in order to avoid this problem, when the dredging column 37 realizes a pushing action and before resetting, the electric push rod 1 30 is started to drive the scraper 2 29 to descend, and the slide rod 1 31 slides on the fixed plate 32. The edge of the scraper 2 29 is used to scrape off the impurities attached to the surface of the dredging column 37 and drop them into the filter cartridge 8. Then the dredging column 37 is driven to reset. This can avoid the situation where the impurities fall into the inside of the tower body 1 when the dredging column 37 is reset, and mix with the waste acid again, thereby affecting the final quality of the distillation product.

[0045] In this embodiment, Figures 1-4 、 Figure 6 and Figure 8 As shown, the middle parts of the left and right sides of the upper end surface of the mounting ring 2 are fixedly connected to the support rod 4, the upper end of the support rod 4 is fixedly connected to the slide plate 7, the inner side of the slide plate 7 is slidably connected to the mounting plate 3, the left and right sides of the mounting plate 3 are rotatably provided with a connecting rod 1 25, the lower end of the connecting rod 1 25 is rotatably provided with a connecting rod 26, the lower end of the connecting rod 26 is rotatably provided with a displacement plate 10, the left and right sides of the displacement plate 10 are slidably connected with a slider 14, the lower end of the slider 14 is rotatably provided with a rotating rod 17, the lower end of the rotating rod 17 is fixedly connected to the collecting box 12, and the lower side of the collecting box 12 is provided with a filter screen 38;

[0046] The front end of the left chute plate 7 is fixedly connected to a motor 4 23, the output end of the motor 4 23 is fixedly connected to a threaded rod 1 24, the front and rear ends of the threaded rod 1 24 are rotatably set on the chute plate 7, the threaded rod 1 24 is threadedly connected to the mounting plate 3, the left side of the front end of the mounting plate 3 is fixedly connected to a motor 3 22, and the output end of the motor 3 22 is fixedly connected to the upper end of the left connecting rod 1 25;

[0047] The upper end of the slider 14 is threadedly connected to a bidirectional threaded rod 11. Both the left and right ends of the bidirectional threaded rod 11 are rotatably arranged on the displacement plate 10. The right end of the displacement plate 10 is fixedly connected to a second motor 16. The output end of the second motor 16 is fixedly connected to the right end of the bidirectional threaded rod 11.

[0048] The lower side of the front end of the slider 14 is fixedly connected to the motor 15, and the output end of the motor 15 is fixedly connected to the upper end of the rotating rod 17;

[0049] A T-shaped plate 18 is slidably connected to one side of the upper end of the rotating rod 17, and a connecting rod 20 is fixedly connected to both the front and rear sides of the lower end surface of the T-shaped plate 18. The lower end of the connecting rod 20 is fixedly connected to a scraper 13, and the scraper 13 is slidably connected to the collecting box 12. The upper end of the rotating rod 17 is fixedly connected to a fixed block 21, and the upper end surface of the fixed block 21 is fixedly connected to an electric push rod 3 19. The piston end of the electric push rod 3 19 is fixedly connected to the middle part of the lower end surface of the T-shaped plate 18;

[0050] Specifically, in the above embodiment, although the filter cartridge 8 can be used to filter out impurities in the waste acid, the impurities still remain inside the filter cartridge 8. When the impurities accumulate to a certain height inside the filter cartridge 8, the filter holes 9 will still be covered, affecting the filtering effect. Moreover, if the waste acid is still continuously injected into the filter cartridge 8, the impurities in the filter cartridge 8 cannot be removed by dumping. Therefore, in order to avoid this situation, when a certain amount of impurities accumulate at the bottom of the filter cartridge 8, the motor 3 22 can be used to drive the connecting rod 1 25 to rotate, so that the connecting rod 26 can rotate. When the angle between the two changes, the connecting rod 26 can be rotated. The displacement plate 10 is moved downward, and the lower end surface of the scraper 13 in the initial state is lower than the lower end surface of the collecting box 12, and the bottom of the scraper 13 is in contact with the bottom edge of the inner cavity of the filter cartridge 8. Then, the motor 2 16 is used to drive the bidirectional threaded rod 11 to rotate, so that the two sliders 14 slide simultaneously and approach each other, so that the two scrapers 13 can be brought close to each other to scrape the impurities and move the impurities toward the bottom center of the filter cartridge 8. Then, the scraping angle of the scraper 13 can be adjusted by driving the filter cartridge 8 to rotate again, until the scraper 13 pushes impurities in multiple directions to the bottom center of the filter cartridge 8. Then, the electric push rod 3 19 is used to drive the T-shaped plate 18 to slide upward, so that the scraper 13 rises and the bottom of the scraper 13 is flush with the bottom of the collection box 12, and the collection box 12 is driven down again to fit with the bottom of the inner cavity of the filter cartridge 8, and the two collection boxes 12 are driven close to each other until they fit together to clamp the impurities. By first using the scraper 13 to push the impurities toward the center of the filter cartridge 8 and then bringing the collection boxes 12 close to each other, it is avoided that some impurities are pressed by the collection box 12 and cannot be collected. Then, the displacement plate 10 is driven to rise, and the collection box 12 is moved out of the filter cartridge 8 and Moreover, the filter screen 38 can filter out the waste acid. When the collection box 12 is higher than the upper end surface of the tower body 1, the motor 4 23 is used to drive the threaded rod 1 24 to rotate, so that the mounting plate 3 slides forward and the collection box 12 is moved away from the top of the tower body 1. Then, the chain is driven to separate the collection boxes 12 again, and the motor 15 is used to drive the two rotating rods 17 to rotate in different directions at the same time, so that the impurities in the collection box 12 can be poured out, so that the impurities accumulated at the bottom of the filter cartridge 8 can be self-cleaned, and the situation of excessive accumulation of impurities and clogging the filter hole 9 is further avoided. In addition, the cleaning process does not affect the normal addition of waste acid.

[0051] Working principle: open the cover 39, move the liquid inlet pipe 6 and extend its end into the filter cartridge 8, add the waste acid through the liquid inlet 5, and flow into the filter cartridge 8 after passing through the liquid inlet pipe 6. Use the filter holes 9 to filter the impurities in the waste acid. At the same time, the motor 5 27 can be used to drive the filter cartridge 8 to rotate, and the residual waste acid in the impurities can be further thrown out through the filter holes 9 under the action of centrifugal force, thereby improving the filtering effect. The filtered waste acid flows into the tower body 1, and then the liquid inlet pipe 6 is moved out of the tower body 1, and then the cover 39 is closed, and the electric heating coil 41 is used to heat the waste acid to evaporate the water in the waste acid, thereby realizing the concentration of the waste acid. At the same time, the water vapor will be discharged from the steam pipe 40. After the distillation and concentration is completed, the waste acid can be discharged by opening the valve of the discharge pipe 28. The acid is discharged, and the impurities in the waste acid are removed by filtering first and then distilling and concentrating, which avoids the situation where the impurities in the waste acid react with the steam generated in the distillation process to form new compounds, thereby improving the purity and quality of the distillation product. In addition, since the filter holes 9 may be blocked by impurities when filtering impurities, when waste acid is continuously added to the filter cartridge 8, it will affect the filtering effect of subsequent waste acid. Therefore, in order to avoid this situation, when the filter holes 9 are blocked, the motor 5 27 can be used to drive the filter cartridge 8 to rotate intermittently, and each time the filter cartridge 8 stops rotating, a row of filter holes 9 are aligned with multiple dredging columns 37, and then the electric push rod 2 34 is started, and drives the transverse plate 33 to move forward, so that the slide bar 2 35 is on the tower body. 1, so that the dredging column 37 moves and passes through the filter hole 9, pushing off the impurities clogged on the filter hole 9 wall and attached to it, and then the dredging column 37 is reset, the filter cartridge 8 continues to rotate, and then the above operation is repeated, so that the dredging effect can be achieved for multiple filter holes 9, thereby avoiding the situation where impurities are blocked in the filter hole 9 and thus affecting the subsequent filtering effect of the waste acid, and when the dredging column 37 achieves a pushing action and before resetting, the electric push rod 1 30 is started to drive the scraper 2 29 to descend, and the slide bar 1 31 slides on the fixed plate 32, and the edge of the scraper 2 29 is used to scrape off the impurities attached to the surface of the dredging column 37 and drop them into the filter cartridge 8, and then the dredging column 37 is driven to reset, which can avoid that when the dredging column 37 is reset, the impurities fall into the interior of the tower body 1 and fall into the filter cartridge 8 again. When a certain amount of impurities are accumulated at the bottom of the filter cartridge 8, the motor 3 22 can be used to drive the connecting rod 1 25 to rotate, so that the connecting rod 2 26 can be rotated. When the angle between the two changes, the displacement plate 10 can be moved downward, and the lower end surface of the scraper 13 in the initial state is lower than the lower end surface of the collecting box 12, and the bottom of the scraper 13 is in contact with the bottom edge of the inner cavity of the filter cartridge 8. Then, the motor 2 16 is used to drive the bidirectional threaded rod 11 to rotate, so that the two sliders 14 slide simultaneously and approach each other, so that the two scrapers 13 can be brought close to each other to scrape the impurities and move the impurities to the center position of the bottom of the filter cartridge 8. Then, the scraping angle of the scraper 13 can be adjusted by driving the filter cartridge 8 to rotate again.Until the scraper 13 pushes the impurities in multiple directions to the bottom center of the filter cartridge 8, and then uses the electric push rod 3 19 to drive the T-plate 18 to slide upward, so that the scraper 13 rises, and the bottom of the scraper 13 is flush with the bottom of the collection box 12, and the collection box 12 is driven down again to fit with the bottom of the inner cavity of the filter cartridge 8, and the two collection boxes 12 are driven close to each other until they fit together to clamp the impurities. By first using the scraper 13 to push the impurities to the center of the filter cartridge 8, and then making the collection boxes 12 close to each other, it is avoided that some impurities are pressed by the collection box 12 and cannot be collected, and then the displacement plate 10 is driven to rise, so that the collection box 12 is collected. The collection box 12 is removed from the filter cartridge 8, and the filter screen 38 can filter out the waste acid. When the collection box 12 is higher than the upper end surface of the tower body 1, the motor 23 is used to drive the threaded rod 24 to rotate, causing the mounting plate 3 to slide forward, so that the collection box 12 is removed from the top of the tower body 1. Then, the chain is driven to separate each collection box 12 again, and the motor 15 is used to drive the two rotating rods 17 to rotate in different directions at the same time, so that the impurities in the collection box 12 can be poured out. This can achieve self-cleaning of the impurities accumulated at the bottom of the filter cartridge 8, further preventing the situation where the filter holes 9 are blocked by excessive impurities. In addition, the cleaning process does not affect the normal addition of waste acid.

[0052] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An industrial waste acid distillation and concentration tower, comprising a tower body (1), characterized in that: A cover body (39) is rotatably provided on one side of the upper end of the tower body (1), a steam pipe (40) is provided in the middle of one side of the cover body (39), an electric heating coil (41) is provided on one side of the inner cavity of the cover body (39), a drain pipe (28) is provided on one side of the lower end of the tower body (1), a filter cartridge (8) is rotatably provided in the middle of the lower end of the inner cavity of the tower body (1), a plurality of filter holes (9) are provided on the filter cartridge (8), a mounting ring (2) is sleeved and fixedly connected on the upper side of the tower body (1), a fixed block (21) is fixedly connected to one end of the rear side of the upper end face of the mounting ring (2), a liquid inlet pipe (6) is passed through and fixedly connected on the upper side of the fixed block (21), a liquid inlet (5) is provided on the upper end of the liquid inlet pipe (6), and the liquid inlet pipe (6) is a hose, and a double-scraping self-cleaning dredging mechanism is provided on the tower body (1) to prevent impurities from clogging the filter holes (9); The double-scraping self-cleaning dredging mechanism includes a second slide bar (35) slidably connected to the upper and lower sides of the rear end of the tower body (1), the front end of the second slide bar (35) is fixedly connected to a dredging plate (36), the front end surface of the dredging plate (36) is fixedly connected to a plurality of dredging columns (37) that match the specifications of the filter hole (9), the dredging columns (37) can pass through the filter hole (9) and fit with the hole wall of the filter hole (9), the middle of the left and right sides of the upper end surface of the mounting ring (2) are fixedly connected to support rods (4), the upper end of the support rod (4) is fixedly connected to a chute plate (7), the inner side of the chute plate (7) is slidably connected to the mounting plate (3), and the left and right sides of the mounting plate (3) are fixedly connected to the support rods (4). The left and right sides of the displacement plate (10) are slidably connected to the sliders (14), the lower end of the slider (14) is rotatably provided with a rotating rod (17), the lower end of the rotating rod (17) is fixedly connected to the collecting box (12), and the lower side of the collecting box (12) is provided with a filter (38), the front end surface of the left chute plate (7) is fixedly connected to the motor four (23), the output end of the motor four (23) is fixedly connected to the threaded rod one (24), the front end of the threaded rod one (24) is fixedly connected to the motor four (23), and the output end of the motor four (23) is fixedly connected to the threaded rod one (24). The rear ends are both rotatably arranged on the slide plate (7), the threaded rod 1 (24) is threadedly connected to the mounting plate (3), the front end of the mounting plate (3) is fixedly connected to the motor 3 (22) on the left side, the output end of the motor 3 (22) is fixedly connected to the upper end of the left connecting rod 1 (25), the upper end of the slider (14) is threadedly connected to the bidirectional threaded rod (11), the left and right ends of the bidirectional threaded rod (11) are both rotatably arranged on the displacement plate (10), the right end of the displacement plate (10) is fixedly connected to the motor 2 (16), the output end of the motor 2 (16) is fixedly connected to the right end of the bidirectional threaded rod (11), the lower side of the front end of the slider (14) is fixedly connected There is a motor (15), the output end of the motor (15) is fixedly connected to the upper end of the rotating rod (17), one side of the upper end of the rotating rod (17) is slidably connected to a T-shaped plate (18), the front and rear sides of the lower end of the T-shaped plate (18) are fixedly connected to a connecting rod (20), the lower end of the connecting rod (20) is fixedly connected to a scraper (13), the scraper (13) is slidably connected to the collecting box (12), the upper end of the rotating rod (17) is fixedly connected to a fixed block (21), the upper end surface of the fixed block (21) is fixedly connected to an electric push rod (19), and the piston end of the electric push rod (19) is fixedly connected to the middle part of the lower end surface of the T-shaped plate (18).

2. The industrial waste acid distillation and concentration tower according to claim 1, wherein: The middle portion of the lower end surface of the tower body (1) is fixedly connected to a motor five (27), and the output end of the motor five (27) is fixedly connected to the middle portion of the lower end surface of the filter cartridge (8).

3. The industrial waste acid distillation and concentration tower according to claim 1, wherein: The middle part of the rear side of the tower body (1) is fixedly connected to an electric push rod 2 (34), the piston end of the electric push rod 2 (34) is fixedly connected to a transverse plate (33), and the upper and lower sides of the front end surface of the transverse plate (33) are fixedly connected to the rear end of the slide rod 2 (35).

4. The industrial waste acid distillation and concentration tower according to claim 1, wherein: A fixed plate (32) is fixedly connected to the middle of the upper end of the inner cavity of the tower body (1), and a sliding rod (31) is slidably connected to both the left and right ends of the front side of the fixed plate (32), and a scraper (29) is fixedly connected to the lower end of the sliding rod (31).

5. The industrial waste acid distillation and concentration tower according to claim 4, characterized in that: An electric push rod 1 (30) is fixedly connected to the middle portion of the front side of the upper end face of the fixed plate (32), and the piston end of the electric push rod 1 (30) is fixedly connected to the middle portion of the upper end face of the scraper 2 (29).

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