Sewage treatment equipment capable of efficiently recovering metal impurities

Abstract

The invention relates to the technical field of sewage treatment, in particular to sewage treatment equipment capable of efficiently recycling metal impurities, which comprises a base, a treatment box is arranged on the base, a center frame is detachably mounted in the middle of the treatment box, side boxes communicated with an inner cavity of the treatment box are arranged on two sides of the treatment box, and a fine filter barrel fixed with the base is arranged on one side of the treatment box. According to the sewage treatment device, a physical adsorption method and a chemical precipitation method are combined, so that metal ions in sewage are effectively removed, impurities in the sewage are magnetically attracted for the first time through a magnetic attraction method under the physical adsorption effect through the preliminary adsorption unit, and then the impurities in the sewage are subjected to secondary magnetic attraction through a secondary magnetic attraction method. Sewage circulates in the circulating unit, so that metal ions in the sewage are adsorbed in a multi-frequency manner through a physical adsorption method, an inner rod rotates to enable a sealing plug to move downwards, chemical reagents in a feeding box are automatically and quantitatively added into the sewage through a discharging opening, and metal ions in the sewage are separated from the sewage.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to sewage treatment equipment for efficiently recovering metal impurities. Background Art

[0002] The large amount of metal impurities in sewage is mainly due to heavy metal pollution caused by industrial production, coal burning, mining, waste treatment, agriculture and other activities.

[0003] The prior art discloses a Chinese patent with application number CN202411120174.1, which is a sedimentation separation device for sewage treatment. It discloses that a stirring plate is inserted into a plate groove on a filter plate, and the filter plate is rotatably connected to a movable ring. During the rotation of the rotating sleeve, the filter plate is driven to rotate continuously. Since the bottom of the stirring plate is in the sewage, the sewage can be stirred, thereby increasing the probability of contact between impurities in the sewage and the flocculant.

[0004] Although the above device can complete the stirring during sewage treatment and accelerate the reaction efficiency, there are still some problems:

[0005] There are many ways to treat sewage and most sewage treatment devices only use a single treatment method. When sewage contains a large amount of metal impurities, the single treatment can only preliminarily treat the metal impurities inside the sewage, while the large amount of metal ions contained in the sewage are effectively removed. At the same time, the chemical reagents used in sewage treatment are mostly added manually, which increases the workload of personnel. Summary of the Invention

[0006] The object of the present invention is to provide a sewage treatment device with efficient recovery of metal impurities, so as to solve the technical problem of effectively removing metal ions in sewage proposed in the above background technology.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A sewage treatment device for efficient recovery of metal impurities comprises a base, a treatment box is provided on the base, a center frame is detachably mounted in the middle of the treatment box, side boxes connected to the inner cavity of the treatment box are provided on both sides of the treatment box, cleaning units for scraping off impurities filtered on the center frame are provided in the side boxes, and a preliminary adsorption unit connected to the treatment box is provided below the side boxes; a sewage collecting box is detachably mounted on the bottom of the treatment box, a fine filter barrel fixed to the base is provided on one side of the treatment box, and a circulation unit for circulating sewage is provided on the upper part of the fine filter barrel.

[0009] Preferably, rectangular grooves are provided on both sides of the processing box, and two groups of symmetrical guide rods are fixedly installed on both sides of the center frame. A movable plate that passes through and slides on the center frame is installed between each group of guide rods. A groove is provided in the middle of the movable plate, and a spring is provided on the outside of the guide rod and the spring is located on one side of the movable plate to abut it. A rotating rod is threadedly installed on one side of the movable plate, and a flip plate located inside the groove of the movable plate is fixedly installed on the rotating rod. The flip plates on both sides are respectively located in the rectangular grooves on both sides.

[0010] Preferably, a filter hole is provided in the middle of the center frame, and the cleaning unit includes two groups of symmetrically arranged pull rods, springs are provided on the outside of the pull rods and the springs are located on the outside of the side boxes, and a T-shaped plate is installed between each group of pull rods, a through groove is opened in the middle of the T-shaped plate, and a scraper is slidably installed in the through groove. The upper part of the scraper is T-shaped and slides in the through groove, and two symmetrically arranged springs are installed between the scraper and the T-shaped plate, vertical rods are fixedly installed on both sides of the upper end face of the scraper, and a clamping plate is slidably installed on the vertical rods.

[0011] Preferably, the preliminary adsorption unit includes two symmetrically arranged collection frames, a magnetic filter plate is placed on the inner wall of the collection frame, a recovery pipe connected to the inner cavity of the processing box is fixedly installed at the bottom of the collection frame, and the collection frames on both sides are respectively located at the lower part of the two flip plates for support. A driving wheel is installed on one side of the processing box through the rotation of the motor, and the upper and lower sides of the driving wheel are engaged with rack plates that are slidably connected to the processing box.

[0012] Preferably, two symmetrically arranged fixing parts are fixedly installed on the bottom of the side box, and a shaft rod is installed between the two fixing parts for common rotation. The two fixing parts are provided with a retractable wheel fixedly connected to the shaft rod on the side away from each other, and a pull rope fixedly connected to the magnetic filter plate is wound around the retractable wheel. Gears are fixedly installed at one end of the shaft rods on both sides, and the two gears are respectively engaged with the corresponding rack plates.

[0013] Preferably, the circulation unit includes a mounting plate arranged in a circumferential direction inside the fine filter barrel, a treatment barrel is fixedly mounted on the upper portion of the mounting plate, a center rod is rotatably mounted in the middle of the inner cavity of the treatment barrel, and a plurality of circumferentially arranged adsorption plates are detachably mounted on the outside of the center rod. The adsorption plates remove metals from the sewage by magnetic adsorption. A connecting arc pipe is commonly installed between every two adjacent treatment barrels, a one-way valve is provided in the arc pipe, a suction pipe is commonly installed between the treatment barrel on one side and the lower part of the treatment box, a drain pipe is fixedly mounted on the lower part of the treatment barrel on one side, and a water pump is provided in the drain pipe.

[0014] Preferably, an air transmission tube is fixedly installed on one side of the arc tube, an air cylinder is installed between the multiple air transmission tubes, a piston rod is provided in the middle of the air cylinder, and a one-way valve is provided inside the air transmission tube.

[0015] Preferably, an internal rod rotatably connected to the fine filter barrel is installed at the bottom of the air cylinder through the rotation of a motor, a rectangular bar is fixedly installed on the internal rod, an external sleeve is installed between the rectangular bar and the internal rod for sliding up and down, a feeding box is rotatably installed on the outer edge of the external sleeve, a plurality of discharge ports are opened at the lower part of the feeding box, a sealing plate is detachably provided on the top of the feeding box, a feeding pipe is provided on one side of the sealing plate, and a plurality of springs connected to the internal rod are provided on the top of the feeding box.

[0016] Preferably, the middle part of the internal rod is threaded, and a rotating ring is rotatably installed on the middle thread, an external ring is rotatably installed on the outside of the rotating ring, a plurality of stirring rods are provided at the bottom of the external ring, a guide plate slidably connected to the fine filter barrel is fixedly installed on one side of the external ring, a support is fixedly installed on the guide plate, an annular plate on the outside of the internal rod is fixedly installed on one side of the support, a plurality of circumferentially arranged connecting rods are fixedly installed on the top of the annular plate, and a sealing plug is fixedly installed on the top of the connecting rod.

[0017] Preferably, a chemical reagent is automatically added to the sewage in the feeding box. By adding the chemical reagent to the sewage, the metal ions in the sewage react with the reagent to produce a metal salt precipitate, and the purpose of removing heavy metal ions is achieved through precipitation.

[0018] Beneficial effects of the present invention:

[0019] 1. The present invention can resist impurities in the sewage injected into the treatment box through the arrangement of the center frame, thereby realizing preliminary filtration of impurities in the sewage. The cleaning unit cleans the impurities received on the center frame and makes them fall to the preliminary adsorption unit. The preliminary adsorption unit magnetically attracts the impurities in the sewage for the first time through physical adsorption. The sewage entering the treatment box is pretreated in the treatment box, and the mud in the sewage is preliminarily precipitated at the bottom of the treatment box. The pumping pipe is opened to discharge the sewage in the treatment box into the circulation unit so as to treat the metal ions in the sewage. The arrangement of the sewage collecting box can quickly dump the mud that has sunk in the sewage by disassembling the sewage collecting box after the sewage in the treatment box is discharged.

[0020] 2. In the present invention, after the sewage enters the treatment barrel on one side, it impacts the adsorption plate. At this time, the central rod drives multiple adsorption plates to rotate. The rotation of multiple adsorption plates can perform secondary adsorption on metal impurities in the sewage. The sewage passes through multiple treatment barrels in turn, thereby realizing the recycling treatment of the sewage. Compared with the existing sewage treatment settings, the present invention can perform multiple treatments on sewage through the adsorption method. The preliminary adsorption unit adsorbs larger particles and metal impurities in the sewage, and the metal ions in the sewage are efficiently adsorbed by the heavy metal ions through the circulation operation of the sewage in the circulation unit.

[0021] 3. The present invention drives the driving wheel to rotate by turning on the motor, and when the driving wheel rotates, it drives the two rack plates to move synchronously, and when the rack plates on both sides move, they drive the gears on both sides to rotate, and when the gears rotate, they drive the shaft to rotate, and when the shaft rotates, it drives the retracting wheels on both sides to rotate synchronously. When the retracting wheels rotate, the pull rope is wound up to move the magnetic filter plate upward in the collection frame. When the magnetic filter plate is moved out of the collection frame, the impurities on the upper part of the magnetic filter plate can be dumped by turning over the magnetic filter plate, and then the metal particles magnetically attracted on the magnetic filter plate can be scraped off by manual scraping.

[0022] 4. The present invention presses the piston rod downward. After the piston rod is pressed, the air pressure in the air cylinder is transmitted to multiple air transmission tubes. The air pressure in the air transmission tubes impacts the multiple arc tubes, which on the one hand promotes the circulation of sewage in the multiple treatment barrels and on the other hand can clear the blockage in the multiple air transmission tubes. Compared with the existing sewage treatment device, the present invention can utilize the sewage to circulate in the circulation unit, thereby adsorbing metal ions in the sewage multiple times through physical adsorption method, and at the same time, it can use negative pressure to clean the multiple treatment barrels and the inside of the arc tubes.

[0023] 5. When the internal rod rotates, the present invention removes the blockage of the discharge port when the sealing plug moves downward. At this time, the chemical reagent in the feeding box falls through the discharge port, thereby realizing automatic and quantitative addition of chemical reagents to the sewage. When the internal rod rotates, the external ring rises and falls synchronously, driving multiple stirring rods to rise and fall, and cooperating with the internal rod to stir the chemical reagents in the sewage, promote the mixing of the chemical reagents and the sewage, and increase the reaction rate between the sewage and the chemical reagents. The present invention combines physical adsorption with chemical precipitation to effectively remove metal ions in sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a partial cross-sectional structural schematic diagram of the processing box of the present invention;

[0027] Figure 3 It is a schematic diagram of the preliminary adsorption unit structure of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of the center frame and cleaning unit of the present invention;

[0029] Figure 5 This is a schematic diagram of the internal structure of the fine filter barrel of the present invention;

[0030] Figure 6 Schematic diagram of the circulation unit structure of the present invention;

[0031] Figure 7 This is a schematic diagram of the front cross-section structure of the charging box of the present invention;

[0032] Figure 8 It is a schematic diagram of the top view of the structure between the sealing plate and the internal rod of the present invention.

[0033] The reference numerals in the figures are as follows:

[0034] 1. Base; 2. Processing box; 20. Center frame; 201. Guide rod; 202. Moving plate; 203. Rotating rod; 204. Turning plate; 21. Side box; 211. Pull rod; 212. T-plate; 213. Scraper; 214. Vertical rod; 215. Clamping plate; 22. Rectangular groove; 23. Collection frame; 231. Magnetic filter plate; 232. Recovery pipe; 233. Driving wheel; 234. Rack plate; 235. Fixing part; 236. Shaft; 237. Retracting and unretracting wheel; 238. Pull rope; 239. Gear; 24. Sewage collecting box; 25. Suction pipe ;3. Fine filter barrel;31. Mounting plate;311. Processing barrel;312. Center rod;313. Adsorption plate;315. Arc tube;316. Drain pipe;32. Air cylinder;321. Piston rod;322. Air transmission pipe;33. Internal rod;34. Rectangular bar;35. External sleeve;36. Feeding box;361. Feeding port;362. Sealing plate;363. Feeding pipe;37. Rotating ring;38. External ring;381. Guide plate;382. Support member;383. Annular plate;384. Connecting rod;385. Sealing plug;39. Stirring rod. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] As attached Figures 1-8As shown, a sewage treatment equipment for efficient recovery of metal impurities includes a base 1, a treatment box 2 is provided on the base 1, a center frame 20 is detachably installed in the middle of the treatment box 2, side boxes 21 connected to the inner cavity of the treatment box 2 are provided on both sides, a cleaning unit for scraping off impurities filtered on the center frame 20 is provided in the side box 21, a preliminary adsorption unit connected to the treatment box 2 is provided below the side box 21, a sewage collecting box 24 is detachably installed at the bottom of the treatment box 2, a fine filter barrel 3 fixed to the base 1 is provided on one side of the treatment box 2, and a circulation unit for circulating sewage is provided on the upper part of the fine filter barrel 3.

[0037] The setting of the central frame 20 can resist impurities in the sewage injected into the treatment box 2, and realize preliminary filtration of impurities in the sewage. The cleaning unit cleans the impurities received on the central frame 20 and makes them fall to the preliminary adsorption unit. The preliminary adsorption unit magnetically absorbs the impurities in the sewage for the first time through physical adsorption. The sewage entering the treatment box 2 is pre-treated in the treatment box 2, and the mud in the sewage is preliminarily settled at the bottom of the treatment box 2. The setting of the sewage collection box 24 can quickly dump the mud sunken in the sewage by disassembling the sewage collection box 24 after the sewage in the treatment box 2 is discharged, and the sewage in the treatment box 2 is discharged into the circulation unit through the pumping pipe 25. At this time, after the sewage enters the treatment barrel 311 on one side, it impacts the adsorption plate 313. At this time, the central rod 312 drives multiple adsorption plates 313 to rotate. The rotation of multiple adsorption plates 313 can perform secondary adsorption on the metal impurities in the sewage, and Under the setting of the arc tube 315 and multiple treatment barrels 311, the sewage passes through multiple treatment barrels 311 in turn, thereby realizing the circulation treatment of the sewage. When the adsorption plate 313 adsorbs metal impurities in the sewage, it uses physical adsorption to adsorb heavy metal ions in the sewage onto the surface of the adsorption plate 313. The adsorption plate 313 is provided with activated carbon, zeolite, and diatomaceous earth. The above materials can effectively remove heavy metal ions, and by disassembling the adsorption plate 313 outside the central rod 312, the adsorption plate 313 that has been used for a certain period of time can also be replaced to ensure the treatment effect of metal ion removal in the multiple treatment barrels 311. Compared with the existing sewage treatment settings, the present invention can perform multiple treatments on sewage through the adsorption method. The preliminary adsorption unit adsorbs larger particulate matter and metal impurities in the sewage, and the metal ions in the sewage are efficiently adsorbed by the heavy metal ions through the circulation operation of the sewage in the circulation unit.

[0038] As attached Figure 2 、 Figure 3As shown, rectangular grooves 22 are opened on both sides of the processing box 2, and two groups of symmetrical guide rods 201 are fixedly installed on both sides of the center frame 20. A movable plate 202 that passes through and slides on the center frame 20 is installed between each group of guide rods 201. A groove is provided in the middle of the movable plate 202, and a spring is provided on the outside of the guide rod 201 and the spring is located on one side of the movable plate 202 to abut it. A rotating rod 203 is threadedly installed on one side of the movable plate 202, and a flip plate 204 located inside the groove of the movable plate 202 is fixedly installed on the rotating rod 203. The flip plates 204 on both sides are respectively located in the rectangular grooves 22 on both sides.

[0039] By pushing the movable plate 202 to one side of the guide rod 201, the movable plate 202 and the flip plate 204 are moved out of the rectangular groove 22 on the treatment box 2, and then the cleaning unit on the central frame 20 is moved into the side box 21, so that the central frame 20 can be moved out of the treatment box 2 as a whole, thereby facilitating the cleaning operation of the central frame 20 after a certain period of use. At the same time, after the central frame 20 is moved out of the treatment box 2, the inner cavity of the treatment box 2 can also be cleaned. When the central frame 20 is placed inside the treatment box 2, the rotating rod 203 is manually rotated, and the rotating rod 203 rotates and synchronously drives the flip plate 204 to flip. When the flip plate 204 rotates and tilts, when the sewage passes through the central frame 20, the impurities and metal particles in the sewage are blocked by the central frame 20, and finally fall into the preliminary adsorption unit under the guidance of the flip plate 204.

[0040] A filter hole is provided in the middle of the center frame 20, and the cleaning unit includes two groups of symmetrically arranged pull rods 211. A spring is provided on the outside of the pull rods 211 and the spring is located on the outside of the side box 21. A T-shaped plate 212 is installed between each group of pull rods 211. A through groove is opened in the middle of the T-shaped plate 212, and a scraper 213 is slidably installed in the through groove. The upper part of the scraper 213 is T-shaped and slides in the through groove. Two symmetrically arranged springs are installed between the scraper 213 and the T-shaped plate 212. Vertical rods 214 are fixedly installed on both sides of the upper end surface of the scraper 213, and a clamping plate 215 is slidably installed on the vertical rod 214.

[0041] When scraping and cleaning the impurities collected during sewage filtration in the middle of the center frame 20, the pull rod 211 is manually pushed, and the pull rod 211 squeezes the spring under the push. At this time, one end of the pull rod 211 drives the T-shaped plate 212 to move toward the middle of the center frame 20, and then the push of the pull rod 211 is canceled. At this time, under the action of the spring, the T-shaped plate 212 moves on the center frame 20, and the T-shaped plate 212 synchronously drives the scraper 213 to move when moving. When the scraper 213 moves, it scrapes the impurities on the center frame 20. Since the two sides of the center frame 20 are arranged at an angle, the impurities on the center frame 20 can be guided, thereby facilitating the impurities to enter the collection frame 23.

[0042] As attached Figure 3 As shown, the preliminary adsorption unit includes two symmetrically arranged collecting frames 23, a magnetic filter plate 231 is placed on the inner wall of the collecting frame 23, and a recovery pipe 232 connected to the inner cavity of the processing box 2 is fixedly installed at the bottom of the collecting frame 23. The collecting frames 23 on both sides are respectively located at the lower part of the two flip plates 204 for support. A driving wheel 233 is installed on one side of the processing box 2 through the rotation of the motor, and the upper and lower sides of the driving wheel 233 are engaged with a rack plate 234 that is slidably connected to the processing box 2.

[0043] Two symmetrically arranged fixing parts 235 are fixedly installed at the bottom of the side box 21, and a shaft 236 is installed between the two fixing parts 235 for common rotation. The two fixing parts 235 are provided with a retractable wheel 237 fixedly connected to the shaft 236 on the side away from each other. A pull rope 238 fixedly connected to the magnetic filter plate 231 is wound around the retractable wheel 237. One end of the shaft 236 on both sides is fixedly installed with a gear 239, and the two gears 239 are respectively engaged with the corresponding rack plates 234.

[0044] As attached Figure 3 As shown, by setting the magnetic filter plate 231, the metal particles in the impurities can be magnetically attracted, and the water mixed in the impurities scraped off can also be filtered out by the magnetic filter plate 231, and the water that finally enters the collection frame 23 re-enters the interior of the processing box 2 through the recovery pipe 232. When the impurities on the magnetic filter plate 231 are removed, the motor is turned on to drive the driving wheel 233 to rotate. When the driving wheel 233 rotates, it synchronously drives the two rack plates 234 to move. When the rack plates 234 on both sides move, they drive the gears 239 on both sides to rotate. When the gear 239 rotates, it drives the shaft 236 to rotate. When the rod 236 rotates, the retracting wheels 237 on both sides thereof are driven to rotate synchronously. When the retracting wheels 237 rotate, the pull rope 238 is wound up, thereby moving the magnetic filter plate 231 upward in the collection frame 23. When the magnetic filter plate 231 is moved out of the collection frame 23, the impurities on the upper part of the magnetic filter plate 231 can be dumped out by turning over the magnetic filter plate 231, and then the metal particles magnetically attracted to the magnetic filter plate 231 can be scraped off by manual scraping. Compared with the existing sewage treatment device, the present invention can filter out impurities and metal particles in sewage, and adsorb metal particles separately.

[0045] As attached Figure 5 、 Figure 6As shown, the circulation unit includes a mounting plate 31 arranged in a circumferential direction inside the fine filter barrel 3, a treatment barrel 311 is fixedly mounted on the upper part of the mounting plate 31, a center rod 312 is rotatably mounted in the middle of the inner cavity of the treatment barrel 311, and a plurality of circumferentially arranged adsorption plates 313 are detachably mounted on the outside of the center rod 312. The adsorption plates 313 remove metals in the sewage by magnetic adsorption. A connecting arc pipe 315 is commonly installed between every two adjacent treatment barrels 311, and a one-way valve is provided in the arc pipe 315. A suction pipe 25 is commonly installed between the treatment barrel 311 on one side and the lower part of the treatment box 2, and a drain pipe 316 is fixedly mounted on the lower part of the treatment barrel 311 on one side, and a water pump is provided in the drain pipe 316.

[0046] By opening the pump pipe 25, the pre-treated sewage in the treatment box 2 is discharged into the treatment barrel 311 on one side. After entering the treatment barrel 311, the sewage impacts the adsorption plate 313, so that under the action of the central rod 312, multiple adsorption plates 313 rotate in the treatment barrel 311. Through the rotation of multiple adsorption plates 313, they can contact the sewage in the treatment barrel 311 at multiple frequencies. Since activated carbon, zeolite and diatomaceous earth are arranged inside the adsorption plate 313, the heavy metal ions in the sewage are adsorbed on the adsorption plate 313 through physical adsorption. By opening the arc tube 315, the sewage can be circulated and filtered in multiple treatment barrels 311. The metal ions in the sewage can be efficiently removed through the circulation filtration. Compared with the existing sewage treatment device, the present invention can cooperate with the preliminary adsorption unit to preliminarily treat the metal particles in the sewage, and then efficiently remove the metal ions in the sewage through the circulation unit.

[0047] As attached Figure 6 As shown, an air transmission tube 322 is fixedly installed on one side of the arc tube 315, and an air cylinder 32 is installed between the multiple air transmission tubes 322. A piston rod 321 is provided in the middle of the air cylinder 32, and a one-way valve is provided inside the air transmission tube 322.

[0048] The sewage circulates in multiple treatment barrels 311. When the arc tube 315 is blocked due to dirt, the piston rod 321 is pressed downward. After the piston rod 321 is pressed, the air pressure in the air cylinder 32 is transmitted to the multiple air transfer tubes 322. The air pressure in the air transfer tubes 322 impacts the multiple arc tubes 315. On the one hand, it promotes the circulation of sewage in the multiple treatment barrels 311. On the other hand, it can also clear the blockage in the multiple air transfer tubes 322. Compared with the existing sewage treatment device, the present invention can utilize the sewage to circulate in the circulation unit, thereby adsorbing the metal ions in the sewage multiple times by physical adsorption method, and at the same time, it can use negative pressure to clean the multiple treatment barrels 311 and the inside of the arc tube 315.

[0049] As attached Figure 7As shown, an internal rod 33 rotatably connected to the fine filter barrel 3 is installed at the bottom of the air cylinder 32 through the rotation of the motor, and a rectangular bar 34 is fixedly installed on the internal rod 33. An external sleeve 35 is installed between the rectangular bar 34 and the internal rod 33 for sliding up and down. A feeding box 36 is rotatably installed on the outer edge of the external sleeve 35. A plurality of discharge ports 361 are opened at the lower part of the feeding box 36, and a sealing plate 362 is detachably provided on the top of the feeding box 36. A feeding pipe 363 is provided on one side of the sealing plate 362, and a plurality of springs connected to the internal rod 33 are provided on the top of the feeding box 36.

[0050] After the sewage is treated by physical adsorption, it is discharged into the fine filter barrel 3 through the drain pipe 316, and the chemical reagent is injected into the feeding box 36 through the feeding pipe 363. Then the motor is turned on to drive the internal rod 33 to rotate. When the internal rod 33 rotates, since the guide plate 381 slides up and down with the inside of the fine filter barrel 3, and the rotating ring 37 is rotatably connected to the outer ring 38, the internal rod 33 drives the rotating ring 37 to move up and down on the internal rod 33. When the rotating ring 37 moves upward, it simultaneously drives the outer ring 38, the guide plate 381, the support 382, ​​and the annular plate 383 to move up and down. When the annular plate 383 moves up and down, it simultaneously drives the connecting rod 384 and the sealing plug 385 to move up and down. When the sealing plug 385 moves down, the blockage of the discharge port 361 is removed. At this time, the chemical reagent in the feeding box 36 falls through the discharge port 361, and since the sealing plug 385 is conical, the falling chemical reagent falls to the sealing plug 385. When the internal rod 33 rotates, it can also be affected by the divergence effect, thereby realizing automatic and quantitative addition of chemical reagents to the sewage, without the need for manual addition of chemical reagents to the sewage, and the internal rod 33 can also stir the chemical reagents in the sewage, and when the internal rod 33 rotates to drive the external ring 38 to rise and fall, the external ring 38 rises and falls synchronously and drives multiple stirring rods 39 to rise and fall, and the rise and fall of multiple stirring rods 39 cooperate with the rotation of the internal rod 33 to perform multiple stirring in the sewage, thereby promoting the mixing of chemical reagents with sewage and increasing the reaction rate between sewage and chemical reagents. Compared with the existing sewage treatment device, the present invention automatically adds chemical reagents, such as sulfides, hydroxides, and heavy metal scavengers, to the sewage, so that the heavy metal ions in the sewage react with the chemical reagents to produce insoluble metal salt precipitates. The precipitates are finally separated from the sewage by solid-liquid separation, thereby achieving the purpose of effectively removing heavy metal ions in the sewage.

[0051] The middle part of the internal rod 33 is threaded, and a rotating ring 37 is rotatably installed on the middle thread. An external ring 38 is rotatably installed on the outside of the rotating ring 37. A plurality of stirring rods 39 are provided at the bottom of the external ring 38. A guide plate 381 slidably connected to the fine filter barrel 3 is fixedly installed on one side of the external ring 38. A support member 382 is fixedly installed on the guide plate 381. An annular plate 383 on the outside of the internal rod 33 is fixedly installed on one side of the support member 382. A plurality of circumferentially arranged connecting rods 384 are fixedly installed on the top of the annular plate 383, and a sealing plug 385 is fixedly installed on the top of the connecting rod 384.

[0052] The feeding box 36 is provided with a chemical reagent for automatically adding the chemical reagent into the sewage. By adding the chemical reagent into the sewage, the metal ions in the sewage react with the reagent to produce a metal salt precipitate, and the purpose of removing heavy metal ions is achieved through precipitation.

[0053] When in use, the setting of the central frame 20 can resist the impurities in the sewage injected into the treatment box 2, and realize the preliminary filtration of the impurities in the sewage. The cleaning unit cleans the impurities received on the central frame 20 and makes them fall to the preliminary adsorption unit. The setting of the magnetic filter plate 231 can magnetically attract the metal particles in the impurities, and the water mixed in the scraped impurities can also be filtered through the magnetic filter plate 231. The water that finally enters the collection frame 23 re-enters the interior of the treatment box 2 through the recovery pipe 232, and the water pump is opened. 25 The pre-treated sewage in the treatment box 2 is discharged into the treatment barrel 311 on one side. After entering the treatment barrel 311, the sewage impacts the adsorption plate 313. As a result, under the action of the central rod 312, the multiple adsorption plates 313 rotate in the treatment barrel 311. The rotation of the multiple adsorption plates 313 can contact the sewage in the treatment barrel 311 at multiple frequencies. The sewage can be circulated and filtered in the multiple treatment barrels 311. The metal ions in the sewage can be efficiently removed through the circulated filtration. When the pipe 315 is clogged due to dirt, the piston rod 321 is pressed downward. After the piston rod 321 is pressed, the air pressure in the cylinder 32 is transmitted to the multiple air transmission pipes 322. The air pressure in the air transmission pipes 322 impacts the multiple arc pipes 315. On the one hand, it promotes the circulation of sewage in the multiple treatment barrels 311. On the other hand, it can also dredge the blockage in the multiple air transmission pipes 322. The drain pipe 316 discharges the sewage that has completed physical adsorption into the interior of the fine filter barrel 3. When the internal rod 33 rotates, the sealing plug 385 moves down to remove The blockage of the discharge port 361 is eliminated. At this time, the chemical reagents in the feeding box 36 fall through the discharge port 361 to realize automatic and quantitative addition of chemical reagents to the sewage. The lifting and lowering of multiple stirring rods 39 and the rotation of the internal rod 33 can perform multiple stirring on the sewage, thereby promoting the mixing of the chemical reagents with the sewage. By automatically adding chemical reagents to the sewage, the heavy metal ions in the sewage react with the chemical reagents to produce insoluble metal salt precipitates, and the precipitates are finally separated from the sewage by solid-liquid separation.

[0054] 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 above embodiments. The above 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, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A sewage treatment device for efficiently recovering metal impurities, comprising a base (1), characterized in that: The base (1) is provided with a treatment box (2), a center frame (20) is detachably mounted in the middle of the treatment box (2), side boxes (21) are provided on both sides of the treatment box (2) and are communicated with the inner cavity thereof, a cleaning unit is provided in the side boxes (21), a preliminary adsorption unit connected to the treatment box (2) is provided below the side boxes (21), a sewage collecting box (24) is detachably mounted at the bottom of the treatment box (2), a fine filter barrel (3) fixed to the base (1) is provided on one side of the treatment box (2), and a circulation unit for circulating sewage is provided on the upper part of the fine filter barrel (3).

2. The sewage treatment equipment for efficient recovery of metal impurities according to claim 1 is characterized in that: Rectangular grooves (22) are provided on both sides of the processing box (2), and two groups of symmetrical guide rods (201) are fixedly installed on both sides of the center frame (20), and a movable plate (202) that penetrates and slides on the center frame (20) is installed between each group of guide rods (201), and a groove is provided in the middle of the movable plate (202), and a spring is provided on the outside of the guide rod (201) and is located on one side of the movable plate (202) to abut against it, and a rotating rod (203) is threadedly installed on one side of the movable plate (202), and a flip plate (204) located inside the groove of the movable plate (202) is fixedly installed on the rotating rod (203), and the flip plates (204) on both sides are respectively located in the rectangular grooves (22) on both sides.

3. The sewage treatment equipment for efficient recovery of metal impurities according to claim 2 is characterized in that: A filter hole is provided in the middle of the central frame (20), and the cleaning unit includes two groups of symmetrically arranged pull rods (211). A spring is provided on the outside of the pull rods (211) and the spring is located outside the side box (21). A T-shaped plate (212) is installed between each group of pull rods (211). A through groove is provided in the middle of the T-shaped plate (212), and a scraper (213) is slidably installed in the through groove. The upper part of the scraper (213) is T-shaped and slides in the through groove. Two symmetrically arranged springs are installed between the scraper (213) and the T-shaped plate (212). Vertical rods (214) are fixedly installed on both sides of the upper end surface of the scraper (213), and a card plate (215) is slidably installed on the vertical rod (214).

4. The sewage treatment equipment for efficient recovery of metal impurities according to claim 3 is characterized in that: The preliminary adsorption unit comprises two symmetrically arranged collection frames (23), the inner wall of the collection frame (23) is provided with a magnetic filter plate (231), the bottom of the collection frame (23) is fixedly provided with a recovery pipe (232) connected to the inner cavity of the processing box (2), the collection frames (23) on both sides are respectively located at the lower part of the two flip plates (204) for receiving, and a driving wheel (233) is installed on one side of the processing box (2) through the rotation of a motor, and the upper and lower sides of the driving wheel (233) are meshed with rack plates (234) that are slidably connected to the processing box (2).

5. The sewage treatment equipment for efficient recovery of metal impurities according to claim 4 is characterized in that: Two symmetrically arranged fixing members (235) are fixedly installed at the bottom of the side box (21), and a shaft (236) is installed between the two fixing members (235) for common rotation. A retractable wheel (237) fixedly connected to the shaft (236) is provided on the side away from the two fixing members (235), and a pull rope (238) fixedly connected to the magnetic filter plate (231) is wound around the retractable wheel (237). One end of the shaft (236) on both sides is fixedly installed with a gear (239), and the two gears (239) are respectively engaged with the corresponding rack plate (234).

6. The sewage treatment equipment for efficient recovery of metal impurities according to claim 5 is characterized in that: The circulation unit comprises a mounting plate (31) arranged in an annular direction inside the fine filter barrel (3); a treatment barrel (311) is fixedly mounted on the upper portion of the mounting plate (31); a central rod (312) is rotatably mounted in the middle of the inner cavity of the treatment barrel (311); a plurality of annularly arranged adsorption plates (313) are detachably mounted on the outside of the central rod (312); the adsorption plates (313) remove metals from sewage by magnetic adsorption; a connected arc pipe (315) is commonly mounted between every two adjacent treatment barrels (311); a one-way valve is disposed in the arc pipe (315); a water pump (25) is commonly mounted between the treatment barrel (311) on one side and the lower portion of the treatment box (2); a drainage pipe (316) is fixedly mounted on the lower portion of the treatment barrel (311) on one side; and a water pump is disposed in the drainage pipe (316).

7. The sewage treatment equipment for efficient recovery of metal impurities according to claim 6, characterized in that: An air transmission tube (322) is fixedly installed on one side of the arc tube (315), and an air cylinder (32) is installed between the multiple air transmission tubes (322). A piston rod (321) is provided in the middle of the air cylinder (32), and a one-way valve is provided inside the air transmission tube (322).

8. The sewage treatment equipment for efficient recovery of metal impurities according to claim 6, characterized in that: The bottom of the air cylinder (32) is provided with an internal rod (33) rotatably connected to the fine filter barrel (3) through the rotation of a motor, and a rectangular bar (34) is fixedly installed on the internal rod (33). An external sleeve (35) is slidably installed between the rectangular bar (34) and the internal rod (33) up and down, and a feeding box (36) is rotatably installed on the outer edge of the external sleeve (35). A plurality of discharge ports (361) are provided at the lower part of the feeding box (36), and a sealing plate (362) is detachably provided at the top of the feeding box (36). A feeding pipe (363) is provided on one side of the sealing plate (362). A plurality of springs connected to the internal rod (33) are provided at the top of the feeding box (36).

9. The sewage treatment equipment for efficient recovery of metal impurities according to claim 8, characterized in that: The middle portion of the inner rod (33) is threaded, and a rotating ring (37) is rotatably mounted on the middle portion of the threaded portion. An external ring (38) is rotatably mounted on the outside of the rotating ring (37). A plurality of stirring rods (39) are provided at the bottom of the external ring (38). A guide plate (381) slidably connected to the fine filter barrel (3) is fixedly mounted on one side of the external ring (38). A support member (382) is fixedly mounted on the guide plate (381). An annular plate (383) outside the inner rod (33) is fixedly mounted on one side of the support member (382). A plurality of circumferentially arranged connecting rods (384) are fixedly mounted on the top of the annular plate (383). A sealing plug (385) is fixedly mounted on the top of the connecting rod (384).

10. The sewage treatment equipment for efficient recovery of metal impurities according to claim 9, characterized in that: The feeding box (36) is provided with a chemical reagent for automatically adding the chemical reagent into the sewage. By adding the chemical reagent into the sewage, the metal ions in the sewage react with the reagent to produce a metal salt precipitate, thereby achieving the purpose of removing heavy metal ions through precipitation.

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