Heavy metal filtration and extraction device for industrial wastewater and extraction method thereof

Abstract

The present invention relates to the technical field of industrial wastewater treatment, and specifically to a heavy metal filtering and extracting device for industrial wastewater and an extraction method thereof, comprising a filter box, an air collecting box and a distillation box, wherein a filter plate is slidably arranged inside the filter box, a slide groove is arranged at the left and right ends of the filter box, a slide plate is fixedly connected to the bottom sides of the left and right ends of the filter plate, the two slide plates are respectively slidably matched with the two slide grooves, the top ends of the two slide plates are fixedly connected with a plurality of springs, the top ends of the plurality of springs are respectively fixedly connected with the top ends of the two slide grooves, which prevents heavy metals from being adsorbed on the filter plate to cause blockage of the filter plate, avoids collecting and cleaning the heavy metals inside for a long time, improves the efficiency of filtering and collecting heavy metals, improves the efficiency of distilling wastewater, and at the same time, scrapes the top end of the adsorption plate to prevent blockage of the adsorption plate caused by excessive heavy metals, thereby improving the adsorption effect of the adsorption plate.

Description

Technical Field

[0001] The invention relates to the technical field of industrial wastewater treatment, in particular to a heavy metal filtering and extracting device for industrial wastewater and an extraction method thereof. Background Art

[0002] As we all know, industrial wastewater includes production wastewater, production sewage and cooling water, which refers to wastewater and waste liquid generated in the industrial production process, which contains industrial production materials, intermediate products, by-products and pollutants generated in the production process that are lost with water. Industrial wastewater contains a large amount of heavy metal pollutants, and metal particles have great utilization value. If the heavy metal pollutants in industrial wastewater are not treated and directly discharged, it will not only cause environmental pollution, but also cause waste of resources. However, the heavy metal extraction device for industrial wastewater under the existing technology has a simple structure, a slow extraction speed for heavy metals, a poor extraction effect for heavy metals, and low practicality.

[0003] After searching, the utility model patent with Chinese patent number CN202020627869.X discloses a heavy metal filtering and extraction device for industrial wastewater, including a base plate, and a crushing box is arranged on the left side of the upper surface of the base plate. When in use, the device realizes the distillation of industrial wastewater, facilitates the treatment of industrial wastewater, realizes multiple extractions of heavy metals, and enhances the extraction effect of heavy metals.

[0004] The above-mentioned prior art solutions still have the following defects: the filter layer is prone to clogging due to long-term filtration, and the heavy metals on the filter layer need to be frequently cleaned and collected, which reduces the efficiency of heavy metal filtration and collection. In addition, the heavy metals in the wastewater are easily adsorbed on the inner wall of the distillation barrel, which is inconvenient to clean, thereby reducing the effect of heating and distilling the wastewater; in addition, the existing separation device containing heavy metal mixed liquid usually precipitates the heavy metals after treatment, and then inverts the waste liquid to take out the heavy metals separately. Therefore, during the outflow of the liquid, the heavy metals will be shaken again or even mixed with the liquid again and flow out with the wastewater in an undesirable manner. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the prior art, the present invention provides a heavy metal filtration and extraction device for industrial wastewater and an extraction method thereof to solve the problems raised in the above background technology.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a heavy metal filtration and extraction device for industrial wastewater, comprising a filter box, an air collecting box and a distillation box, wherein a filter plate is slidably arranged inside the filter box, a slide groove is arranged at the left and right ends of the filter box, a slide plate is fixedly connected to the bottom sides of the left and right ends of the filter plate, the two slide plates are respectively slidably matched with the two slide grooves, the top ends of the two slide plates are fixedly connected with a plurality of springs, the top ends of the plurality of springs are respectively fixedly connected with the top ends of the two slide grooves, a first water spray pipe is embedded and installed inside the filter box at the lower side of the filter plate, and the first water spray pipe A plurality of first water spray nozzles are evenly connected to the top, the left end of the first water spray pipe is connected to a water inlet pipe, the left end of the water inlet pipe extends to the left side of the filter box, a collecting bucket is slidably arranged inside the filter box, four electric cylinders are fixedly connected to the bottom end of the filter box in a circular array, the top ends of the four electric cylinders are fixedly connected to the bottom end of the collecting bucket, the bottom end of the collecting bucket is connected to a first discharge pipe, a solenoid valve is installed on the first discharge pipe, wherein the collecting bucket body consists of two parts, a top rigid material and a bottom flexible material, the tops of the output ends of the four electric cylinder rod bodies are fixedly connected to the bottom flexible material.

[0009] The right end of the filter box is fixedly connected to a water pump, and the input end of the water pump is connected to the interior of the filter box through a first connecting pipe, and the first connecting pipe is located on the upper side of the filter plate. The air collecting box is located on the right side of the filter box, and the interior of the air collecting box is fixedly connected to multiple water distribution tanks, and the left and right sides between two adjacent water distribution tanks are connected by the first water pipe and the second water pipe respectively, and the output end of the water pump is connected to the first water pipe located in the middle through the second connecting pipe, and the interiors of the multiple water distribution tanks are all connected to multiple longitudinal ventilation pipes, the distillation box is located on the right side of the air collecting box, and the upper side of the interior of the air collecting box is fixedly connected to a second water spray pipe, and the second water spray pipe is evenly connected to a plurality of second water nozzles, and the second water spray pipe is connected to the second water pipe located in the middle through a third connecting pipe, and the upper side of the interior of the distillation box is connected to the interior of the air collecting box through a fourth connecting pipe, and the fourth connecting pipe is located on the lower side of the multiple water distribution tanks, and the interior of the distillation box is fixedly connected to A bracket is connected, and the top of the bracket is fixedly connected to multiple heating plates in a circular array, the inside of the distillation box is slidably provided with a connecting plate, and the connecting plate is provided with multiple through holes in a circular array, the inside of each through hole is fixedly connected to a scraper sleeve through a connecting rod, and the multiple scraper sleeves are respectively sleeved on the outside of the multiple heating plates, the top of the bracket is rotatably connected to a reciprocating screw, the outer side of the reciprocating screw is cooperatively connected to a sliding sleeve, and the sliding sleeve is fixedly connected to the connecting plate, the top of the distillation box is fixedly connected to a first top plate by screws, the top of the first top plate is fixedly connected to a motor, the output shaft of the motor extends to the interior of the distillation box and is connected to the top of the reciprocating screw through a coupling, the bottom end of the interior of the distillation box is fixedly connected to a heating box, and the interior of the distillation box is fixedly connected to an adsorption plate on the upper side of the heating box, the bottom end of the reciprocating screw is fixedly connected to a rotating shaft, the bottom of the rotating shaft is fixedly connected to a stirring plate, and the bottom end of the stirring plate contacts the top of the adsorption plate.

[0010] Preferably, a second discharge pipe is fixedly connected to the bottom end of the filter box, and the top end of the second discharge pipe is connected to the bottom end of the first discharge pipe through a telescopic pipe.

[0011] Preferably, the top end of the air collecting box is connected to a second top plate by screws, and an exhaust pipe connected to the interior of the air collecting box is installed on the second top plate.

[0012] Preferably, the top of the filter box is connected to a third top plate by screws, and the bottom ends of the first top plate, the second top plate and the third top plate are fixedly connected with sealing gaskets, and the bottom ends of the three sealing gaskets are respectively in contact with the tops of the filter box, the gas collecting box and the distillation box.

[0013] Preferably, the bottom end of the gas collecting box is connected to a drain pipe, and a first valve is installed on the drain pipe.

[0014] Preferably, the right end of the distillation box is connected to a third discharge pipe, a second valve is installed on the third discharge pipe, and the third discharge pipe is located on the upper side of the adsorption plate.

[0015] Preferably, a plurality of water holes are evenly arranged on the top of the connecting plate.

[0016] A method for extracting heavy metals from industrial wastewater using a heavy metal filtration and extraction device, comprising the following steps:

[0017] S1. Wastewater is sprayed into the interior of the filter box through the water inlet pipe, the first water spray pipe and the plurality of first water spray nozzles, and the wastewater is filtered through the filter plate to filter the heavy metals in the wastewater. The bottom of the filter plate is washed with wastewater sprayed by the plurality of first water spray nozzles to prevent the heavy metals from being adsorbed on the filter plate and causing the filter plate to be blocked. The filter plate is shaken up and down by the action of two slide plates and the plurality of springs to shake off the heavy metals on the filter plate and make the heavy metals fall into the interior of the collection bucket;

[0018] S2. Push the collecting bucket upwards through four electric cylinders, so that the collecting bucket pushes the wastewater on the upper side of the collecting bucket upwards, and discharges the wastewater inside the filter box through the first connecting pipe, and then open the solenoid valve to discharge the heavy metals inside the collecting bucket through the first discharge pipe, the telescopic pipe and the second discharge pipe, and collect the heavy metals;

[0019] S3, the wastewater filtered by the filter plate is transported to the interior of multiple water distribution boxes through a water pump, the wastewater in the multiple water distribution boxes is sprayed onto multiple heating plates through a third connecting pipe, a second water spray pipe and multiple second water spray nozzles, the wastewater is heated by the multiple heating plates, and the wastewater convected to the bottom of the distillation box is heated by the heating box to evaporate and form steam, the steam enters the interior of the gas collecting box through a fourth connecting pipe, and the heavy metals in the wastewater are adsorbed by the adsorption plate, and the steam entering the interior of the gas collecting box through the fourth connecting pipe is cooled by the multiple water distribution boxes, so that the steam is cooled to form water droplets that fall to the bottom of the gas collecting box, and the wastewater inside the water distribution box absorbs heat, and the heat of the steam is reused;

[0020] S4. The reciprocating screw is driven by a motor to rotate, so that the sliding sleeve, the connecting plate and multiple scraper sleeves move up and down. The heavy metals adsorbed on the heating plate are scraped off by the scraper sleeve to ensure the cleanliness of the surface of the multiple heating plates, thereby improving the heating effect of the multiple heating plates on the wastewater. At the same time, the lead screw drives the rotating shaft to rotate, and the rotating shaft drives the stirring plate to rotate. The stirring plate is used to stir the wastewater at the bottom of the distillation box to facilitate uniform heating of the wastewater and improve the efficiency of wastewater distillation. At the same time, the top of the adsorption plate is scraped to prevent excessive heavy metals from clogging the adsorption plate and improve the adsorption effect of the adsorption plate.

[0021] (III) Beneficial effects

[0022] Compared with the prior art, the present invention provides a heavy metal filtration and extraction device for industrial wastewater and an extraction method thereof, which have the following beneficial effects:

[0023] 1. In the present invention, waste water is sprayed into the interior of the filter box through the water inlet pipe, the first water spray pipe and multiple first water spray nozzles, the waste water is filtered through the filter plate, and the heavy metals in the waste water are filtered. The waste water sprayed by the multiple first water spray nozzles is used to rinse the bottom of the filter plate to prevent the heavy metals from being adsorbed on the filter plate and causing the filter plate to be blocked. The filter plate is shaken up and down by the action of two slide plates and multiple springs, which makes it easy to shake off the heavy metals on the filter plate and make the heavy metals fall into the collection bucket, thereby avoiding long-term collection and cleaning of the internal heavy metals and improving the efficiency of filtering and collecting heavy metals.

[0024] 2. In the present invention, a reciprocating screw is driven by a motor to rotate, so that the sliding sleeve, the connecting plate and multiple scraper sleeves move up and down. The heavy metals adsorbed on the heating plate are scraped off by the scraper sleeves to ensure the cleanliness of the surfaces of the multiple heating plates, thereby improving the heating effect of the multiple heating plates on the wastewater. At the same time, the lead screw drives the rotating shaft to rotate, and the rotating shaft drives the stirring plate to rotate. The stirring plate is used to stir the wastewater at the bottom of the distillation box, which facilitates uniform heating of the wastewater and improves the efficiency of wastewater distillation. At the same time, the top of the adsorption plate is scraped to prevent excessive heavy metals from clogging the adsorption plate, thereby improving the adsorption effect of the adsorption plate.

[0025] 3. In the present invention, the wastewater filtered by the filter plate is transported to the interior of multiple water distribution tanks by a water pump, and the wastewater in the multiple water distribution tanks is sprayed onto multiple heating plates through the third connecting pipe, the second water spray pipe and multiple second water spray nozzles. The wastewater is heated by the multiple heating plates, and the wastewater convected to the bottom of the distillation tank is heated by the heating box to evaporate and form steam. The steam enters the interior of the gas collecting box through the fourth connecting pipe, and the heavy metals in the wastewater are adsorbed by the adsorption plate. The steam entering the interior of the gas collecting box through the fourth connecting pipe is cooled by the multiple water distribution tanks, so that the steam is cooled to form water droplets that fall to the bottom of the gas collecting box, and the wastewater inside the water distribution tank absorbs heat, and the heat of the steam is reused.

[0026] 4. The differentiated material design of the top rigid material and the bottom flexible material of the collecting bucket body makes the flexible material at the top deform first when the top of the output end of the four electric cylinder rod bodies drives the collecting bucket to move upward, thereby providing a gradual lifting force before the entire collecting bucket is driven to move, rather than a direct impact force, so that when the mixture after heavy metal filtration and precipitation is discharged, the separated heavy metals will not be stirred up again and mixed with the waste liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the present invention;

[0028] Figure 2A schematic diagram of a top view of the structure of the connection plate of the present invention connected to a plurality of heating plates;

[0029] Figure 3 For the present invention Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0030] Figure 4 For the present invention Figure 1 Schematic diagram of the local enlarged structure at point B in the middle.

[0031] In the figure: 1, filter box; 2, air collecting box; 3, distillation box; 4, filter plate; 5, slide plate; 6, spring; 7, first water spray pipe; 8, first water spray nozzle; 9, water inlet pipe; 10, collecting bucket; 11, electric cylinder; 12, first discharge pipe; 13, solenoid valve; 14, water pump; 15, first connecting pipe; 16, water distribution box; 17, first water pipe; 18, second water pipe; 19, second connecting pipe; 20, ventilation pipe; 21, second water spray pipe; 22, second water spray nozzle; 23, third connecting pipe; 24, fourth connecting pipe 1. Pipe connection; 25. Bracket; 26. Heating plate; 27. Connecting plate; 28. Scraper sleeve; 29. ​​Reciprocating screw; 30. Sliding sleeve; 31. First top plate; 32. Motor; 33. Coupling; 34. Heating box; 35. Adsorption plate; 36. Rotating shaft; 37. Stirring plate; 38. Second discharge pipe; 39. Telescopic pipe; 40. Second top plate; 41. Exhaust pipe; 42. Third top plate; 43. Sealing pad; 44. Drain pipe; 45. First valve; 46. Third discharge pipe; 47. Second valve; 48. Water hole. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0033] Example

[0034] See also Figure 1-4A heavy metal filtering and extraction device for industrial wastewater comprises a filter box 1, an air collecting box 2 and a distillation box 3. A filter plate 4 is slidably arranged inside the filter box 1. A slide groove is arranged at the left and right ends of the filter box 1. A slide plate 5 is fixedly connected to the bottom sides of the left and right ends of the filter plate 4. The two slide plates 5 are respectively slidably matched with the two slide grooves. The top ends of the two slide plates 5 are fixedly connected with a plurality of springs 6. The top ends of the plurality of springs 6 are respectively fixedly connected with the top ends of the two slide grooves. A first water spray pipe 7 is embedded and installed inside the filter box 1 at the lower side of the filter plate 4. A plurality of first water spray nozzles 8 are evenly connected to the first water spray pipe 7. The left end of the first water spray pipe 7 is connected with a water inlet pipe 9. The left end of the water inlet pipe 9 extends Extending to the left side of the filter box 1, a collecting bucket 10 is slidably provided inside the filter box 1, and four electric cylinders 11 are fixedly connected to the bottom end of the filter box 1 in a circular array, and the top ends of the four electric cylinders 11 are fixedly connected to the bottom end of the collecting bucket 10, and the bottom end of the collecting bucket 10 is connected to a first discharge pipe 12, and a solenoid valve 13 is installed on the first discharge pipe 12, wherein the collecting bucket 10 bucket body is composed of two parts, a top rigid material and a bottom flexible material, and the tops of the output ends of the rod bodies of the four electric cylinders 11 are fixedly connected to the bottom flexible material. This design ensures that when the mixture after heavy metal filtration and precipitation is discharged as liquid, the separated heavy metals will not be stirred up again and mixed with the waste liquid.

[0035] The right end of the filter box 1 is fixedly connected to a water pump 14, and the input end of the water pump 14 is connected to the inside of the filter box 1 through a first connecting pipe 15, and the first connecting pipe 15 is located on the upper side of the filter plate 4. The air collecting box 2 is located on the right side of the filter box 1. A plurality of water distribution boxes 16 are fixedly connected to the inside of the air collecting box 2. The left and right sides of two adjacent water distribution boxes 16 are connected by a first water pipe 17 and a second water pipe 18 respectively. The output end of the water pump 14 is connected to the first water pipe 17 located in the middle through a second connecting pipe 19. The interior of the distillation box 3 is connected with a plurality of longitudinally penetrating ventilation pipes 20. The distillation box 3 is located on the right side of the gas collecting box 2. The upper side of the interior of the gas collecting box 2 is fixedly connected with a second water spray pipe 21. The second water spray pipe 21 is evenly connected with a plurality of second water nozzles 22. The second water spray pipe 21 is connected with the second water pipe 18 located in the middle through a third connecting pipe 23. The upper side of the interior of the distillation box 3 is connected with the interior of the gas collecting box 2 through a fourth connecting pipe 24. The fourth connecting pipe 24 is located on the lower side of the plurality of water distribution boxes 16. The interior of the distillation box 3 is fixedly connected with a bracket 2 5. The top of the bracket 25 is fixedly connected to a plurality of heating plates 26 in a circular array. A connecting plate 27 is slidably arranged inside the distillation box 3. The connecting plate 27 is provided with a plurality of through holes in a circular array. The interior of each through hole is fixedly connected to a scraper sleeve 28 through a connecting rod. The plurality of scraper sleeves 28 are respectively sleeved on the outside of the plurality of heating plates 26. The top of the bracket 25 is rotatably connected to a reciprocating screw 29. The outer side of the reciprocating screw 29 is matched and connected to a sliding sleeve 30. The sliding sleeve 30 is fixedly connected to the connecting plate 27. The top of the distillation box 3 is screwed in place. A first top plate 31 is fixedly connected, and a motor 32 is fixedly connected to the top of the first top plate 31. The output shaft of the motor 32 extends to the interior of the distillation box 3 and is connected to the top of the reciprocating screw 29 through a coupling 33. A heating box 34 is fixedly connected to the bottom end of the interior of the distillation box 3. An adsorption plate 35 is fixedly connected to the interior of the distillation box 3 on the upper side of the heating box 34. A rotating shaft 36 is fixedly connected to the bottom end of the reciprocating screw 29. A stirring plate 37 is fixedly connected to the bottom of the rotating shaft 36. The bottom end of the stirring plate 37 is in contact with the top of the adsorption plate 35.

[0036] Specifically, a second discharge pipe 38 is fixedly connected to the bottom end of the filter box 1, and the top end of the second discharge pipe 38 is connected to the bottom end of the first discharge pipe 12 through a telescopic tube 39. The heavy metals inside the collecting bucket 10 are discharged to the outside of the filter box 1 through the first discharge pipe 12, the telescopic tube 39 and the second discharge pipe 38, while facilitating the collection device to collect the heavy metals.

[0037] Specifically, the top of the air collecting box 2 is connected to a second top plate 40 by screws, and an exhaust pipe 41 connected to the inside of the air collecting box 2 is installed on the second top plate 40. The bottom end of the air collecting box 2 is sealed by the second top plate 40, and the inside of the air collecting box 2 is easy to clean and maintain.

[0038] Specifically, the top of the filter box 1 is connected to the third top plate 42 by screws, and the bottom ends of the first top plate 31, the second top plate 40 and the third top plate 42 are fixedly connected with sealing gaskets 43. The bottom ends of the three sealing gaskets 43 are in contact with the tops of the filter box 1, the air collecting box 2 and the distillation box 3, respectively, to improve the sealing of the first top plate 31, the second top plate 40 and the third top plate 42 connected to the distillation box 3, the air collecting box 2 and the filter box 1, respectively.

[0039] Specifically, the bottom end of the air collecting box 2 is connected to a drain pipe 44 , and a first valve 45 is installed on the drain pipe 44 . By opening the second valve 47 , water at the bottom of the air collecting box 2 can be discharged through the drain pipe 44 .

[0040] Specifically, the right end of the distillation box 3 is connected to a third discharge pipe 46, on which a second valve 47 is installed. The third discharge pipe 46 is located on the upper side of the adsorption plate 35, and the heavy metals on the adsorption plate 35 are discharged through the third discharge pipe 46, which is convenient for collecting the heavy metals.

[0041] Specifically, a plurality of water holes 48 are evenly arranged on the top of the connecting plate 27 , and the water on the connecting plate 27 can flow to the bottom of the distillation box 3 through the water holes 48 .

[0042] The present invention also provides an extraction method for heavy metal filtration and extraction device for industrial wastewater, comprising the following steps:

[0043] S1, waste water is sprayed into the interior of the filter box 1 through the water inlet pipe 9, the first water spray pipe 7 and the plurality of first water spray nozzles 8, the waste water is filtered through the filter plate 4, and the heavy metals in the waste water are filtered, and the bottom of the filter plate 4 is washed by the waste water sprayed by the plurality of first water spray nozzles 8 to prevent the heavy metals from being adsorbed on the filter plate 4 and causing the filter plate 4 to be blocked, and the filter plate 4 is shaken up and down by the action of the two slide plates 5 and the plurality of springs 6, so as to shake off the heavy metals on the filter plate 4 and make the heavy metals fall into the interior of the collection bucket 10;

[0044] S2. The collecting bucket 10 is pushed upward by four electric cylinders 11, so that the collecting bucket 10 pushes the wastewater on the upper side of the collecting bucket 10 upward, and the wastewater inside the filter box 1 is discharged through the first connecting pipe 15, and then the solenoid valve 13 is opened to discharge the heavy metals inside the collecting bucket 10 through the first discharge pipe 12, the telescopic pipe 39 and the second discharge pipe 38, and the heavy metals are collected. In the above process, the differentiated material design of the top rigid material and the bottom flexible material of the collecting bucket 10 bucket body makes the top of the output end of the four electric cylinders 11 drive the collecting bucket 10 to move upward, and the flexible material at the top is deformed first, thereby providing a gradual lifting force before the entire collecting bucket is driven to move, rather than a direct impact force, so that when the mixture after heavy metal filtration and precipitation is discharged, the separated heavy metals will not be stirred up again and mixed with the waste liquid;

[0045] S3, the wastewater filtered by the filter plate 4 is transported to the interior of multiple water distribution boxes 16 through the water pump 14, and the wastewater in the multiple water distribution boxes 16 is sprayed onto the multiple heating plates 26 through the third connecting pipe 23, the second water spray pipe 21 and the multiple second water spray nozzles 22, and the wastewater is heated by the multiple heating plates 26, and the wastewater flowing to the bottom of the distillation box 3 is heated by the heating box 34, so that the wastewater evaporates to form steam, and the steam enters the interior of the gas collecting box 2 through the fourth connecting pipe 24, and the heavy metals in the wastewater are adsorbed by the adsorption plate 35, and the steam entering the interior of the gas collecting box 2 through the fourth connecting pipe 24 is cooled by the multiple water distribution boxes 16, so that the steam is cooled to form water droplets that fall to the bottom of the gas collecting box 2, and the wastewater inside the water distribution box 16 absorbs heat, and the heat of the steam is reused;

[0046] S4. The reciprocating screw 29 is driven by the motor 32 to rotate, so that the sliding sleeve 30, the connecting plate 27 and multiple scraper sleeves 28 move up and down, and the heavy metals adsorbed on the heating plate 26 are scraped off by the scraper sleeve 28 to ensure the cleanliness of the surfaces of the multiple heating plates 26, thereby improving the effect of the multiple heating plates 26 on heating the wastewater. At the same time, the reciprocating screw drives the rotating shaft 36 to rotate, and the rotating shaft 36 drives the stirring plate 37 to rotate. The stirring plate 37 is used to stir the wastewater at the bottom of the distillation box 3, so that the wastewater is evenly heated and the efficiency of the wastewater distillation is improved. At the same time, the top of the adsorption plate 35 is scraped to prevent the adsorption plate 35 from being blocked by excessive heavy metals, thereby improving the adsorption effect of the adsorption plate 35.

[0047] In this embodiment, the models of the motor 32, the electric cylinder 11 and the water pump 14 are Y80M1-2, LX1000-063 and 150QJ20-96 / 16 respectively. The motor 32, the electric cylinder 11 and the water pump 14 are all well-known equipment purchased directly on the market by technicians in this field. Here we just use them without making any structural and functional improvements. We will not go into details here. The motor 32, the electric cylinder 11 and the water pump 14 are all provided with a control switch matching them. The installation position of the control switch is selected according to actual use requirements to facilitate the operator to perform operation and control.

[0048] In summary, the heavy metal filtering and extraction device for industrial wastewater and the extraction method thereof, when in use, the wastewater is sprayed into the interior of the filter box 1 through the water inlet pipe 9, the first water spray pipe 7 and the plurality of first water spray nozzles 8, the wastewater is filtered through the filter plate 4, and the heavy metals in the wastewater are filtered, and the bottom end of the filter plate 4 is washed with wastewater sprayed by the plurality of first water spray nozzles 8 to prevent the heavy metals from being adsorbed on the filter plate 4 and causing the filter plate 4 to be blocked, and the filter plate 4 is shaken up and down by the action of the two slide plates 5 and the plurality of springs 6, so as to shake off the heavy metals on the filter plate 4 and make the heavy metals fall into the interior of the collection bucket 10, The collecting bucket 10 is pushed upward by four electric cylinders 11, so that the collecting bucket 10 pushes the wastewater on the upper side of the collecting bucket 10 to move upward, and the inside of the filter box 1 is discharged through the first connecting pipe 15, and then the solenoid valve 13 is opened to discharge the heavy metals inside the collecting bucket 10 through the first discharge pipe 12, the telescopic pipe 39 and the second discharge pipe 38, and the heavy metals are collected, and the wastewater filtered by the filter plate 4 is transported to the inside of the multiple water distribution boxes 16 through the water pump 14, and the wastewater in the multiple water distribution boxes 16 is sprayed to the multiple heating plates 26 through the third connecting pipe 23, the second water spraying pipe 21 and the multiple second water spraying nozzles 22 The wastewater is heated by a plurality of heating plates 26, and the wastewater flowing to the bottom of the distillation box 3 is heated by the heating box 34, so that the wastewater evaporates to form steam, and the steam enters the interior of the gas collecting box 2 through the fourth connecting pipe 24, and adsorbs heavy metals in the wastewater through the adsorption plate 35. The steam entering the interior of the gas collecting box 2 through the fourth connecting pipe 24 is cooled by a plurality of water distribution boxes 16, so that the steam is cooled to form water droplets that fall to the bottom of the gas collecting box 2, and the wastewater inside the water distribution box 16 absorbs heat, and the heat of the steam is reused, and the reciprocating screw 29 is driven to rotate by the motor 32. , so that the sliding sleeve 30, the connecting plate 27 and multiple scraper sleeves 28 move up and down, and the heavy metals adsorbed on the heating plate 26 are scraped off by the scraper sleeves 28, ensuring the cleanliness of the surfaces of the multiple heating plates 26, thereby improving the effect of the multiple heating plates 26 on heating the wastewater. At the same time, the lead screw drives the rotating shaft 36 to rotate, and the rotating shaft 36 drives the stirring plate 37 to rotate. The stirring plate 37 is used to stir the wastewater at the bottom of the distillation box 3, so that the wastewater is evenly heated, thereby improving the efficiency of the wastewater distillation. At the same time, the top of the adsorption plate 35 is scraped to prevent excessive heavy metals from clogging the adsorption plate 35, thereby improving the adsorption effect of the adsorption plate 35.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heavy metal filtration and extraction device for industrial wastewater, comprising a filtration box (1), a gas collecting box (2) and a distillation box (3), characterized in that: The filter box (1) is provided with a filter plate (4) for sliding inside, and the left and right ends of the filter box (1) are provided with slide grooves. The bottom sides of the left and right ends of the filter plate (4) are fixedly connected with slide plates (5). The two slide plates (5) are respectively slidably matched with the two slide grooves. The top ends of the two slide plates (5) are fixedly connected with a plurality of springs (6). The top ends of the plurality of springs (6) are respectively fixedly connected with the top ends of the two slide grooves. A first water spray pipe (7) is embedded and installed inside the filter box (1) at the lower side of the filter plate (4). The first water spray pipe (7) is evenly connected with a plurality of first water spray nozzles (8). The left end of the first water spray pipe (7) is connected with a water inlet pipe (9). ), the left end of the water inlet pipe (9) extends to the left side of the filter box (1), a collecting bucket (10) is slidably arranged inside the filter box (1), the bottom end of the filter box (1) is fixedly connected to four electric cylinders (11) in a circular array, the top ends of the four electric cylinders (11) are fixedly connected to the bottom end of the collecting bucket (10), the bottom end of the collecting bucket (10) is connected to a first discharge pipe (12), and a solenoid valve (13) is installed on the first discharge pipe (12), wherein the collecting bucket (10) bucket body is composed of two parts, a top rigid material and a bottom flexible material, and the tops of the output ends of the rod bodies of the four electric cylinders (11) are fixedly connected to the bottom flexible material; The right end of the filter box (1) is fixedly connected to a water pump (14), the input end of the water pump (14) is connected to the inside of the filter box (1) through a first connecting pipe (15), the first connecting pipe (15) is located on the upper side of the filter plate (4), the air collecting box (2) is located on the right side of the filter box (1), a plurality of water distribution boxes (16) are fixedly connected to the inside of the air collecting box (2), the left side and the right side between two adjacent water distribution boxes (16) are connected respectively through a first water pipe (17) and a second water pipe (18), the output end of the water pump (14) is connected to the first water pipe (17) located in the middle through a second connecting pipe (19), and the plurality of water distribution boxes (16) are connected to the filter box (1) through a first connecting pipe (19). The interior of the distillation box (3) is connected to a plurality of longitudinally penetrating ventilation pipes (20), the distillation box (3) is located on the right side of the gas collecting box (2), the upper side of the interior of the gas collecting box (2) is fixedly connected to a second water spray pipe (21), a plurality of second water spray nozzles (22) are evenly connected to the second water spray pipe (21), the second water spray pipe (21) is connected to a second water pipe (18) located in the middle through a third connecting pipe (23), the upper side of the interior of the distillation box (3) is connected to the interior of the gas collecting box (2) through a fourth connecting pipe (24), the fourth connecting pipe (24) is located on the lower side of the plurality of water distribution boxes (16), the interior of the distillation box (3) is fixedly connected to a bracket (25), the top of the bracket (25) is fixedly connected to a plurality of heating plates (26) in a circular array, a connecting plate (27) is slidably arranged inside the distillation box (3), a plurality of through holes are arranged on the connecting plate (27) in a circular array, the interior of each through hole is fixedly connected to a scraper sleeve (28) through a connecting rod, and the plurality of scraper sleeves (28) are respectively sleeved on the outside of the plurality of heating plates (26), the top of the bracket (25) is rotatably connected to a reciprocating screw (29), the outer side of the reciprocating screw (29) is cooperatively connected to a sliding sleeve (30), the sliding sleeve (30) is fixedly connected to the connecting plate (27), and the top of the distillation box (3) is fixed by screws A first top plate (31) is connected, and a motor (32) is fixedly connected to the top of the first top plate (31). The output shaft of the motor (32) extends to the interior of the distillation box (3) and is connected to the top of the reciprocating screw (29) through a coupling (33). The bottom end of the interior of the distillation box (3) is fixedly connected to a heating box (34). The interior of the distillation box (3) is located on the upper side of the heating box (34) and is fixedly connected to an adsorption plate (35). The bottom end of the reciprocating screw (29) is fixedly connected to a rotating shaft (36), and the bottom of the rotating shaft (36) is fixedly connected to a stirring plate (37), and the bottom end of the stirring plate (37) contacts the top of the adsorption plate (35).

2. The heavy metal filtration and extraction device for industrial wastewater according to claim 1, characterized in that: The bottom end of the filter box (1) is fixedly connected to a second discharge pipe (38), and the top end of the second discharge pipe (38) is connected to the bottom end of the first discharge pipe (12) via a telescopic pipe (39).

3. The heavy metal filtration and extraction device for industrial wastewater according to claim 2, characterized in that: The top end of the air collecting box (2) is connected to a second top plate (40) via screws, and an exhaust pipe (41) connected to the interior of the air collecting box (2) is installed on the second top plate (40).

4. The heavy metal filtration and extraction device for industrial wastewater according to claim 3, characterized in that: The top end of the filter box (1) is connected to a third top plate (42) by screws, and the bottom ends of the first top plate (31), the second top plate (40) and the third top plate (42) are fixedly connected to sealing gaskets (43), and the bottom ends of the three sealing gaskets (43) are in contact with the top ends of the filter box (1), the gas collecting box (2) and the distillation box (3), respectively.

5. The heavy metal filtration and extraction device for industrial wastewater according to claim 4, characterized in that: The bottom end of the gas collecting box (2) is connected to a drainage pipe (44), and a first valve (45) is installed on the drainage pipe (44).

6. The heavy metal filtration and extraction device for industrial wastewater according to claim 5, characterized in that: The right end of the distillation box (3) is connected to a third discharge pipe (46), a second valve (47) is installed on the third discharge pipe (46), and the third discharge pipe (46) is located on the upper side of the adsorption plate (35).

7. The heavy metal filtration and extraction device for industrial wastewater according to claim 6, characterized in that: A plurality of water holes (48) are evenly arranged on the top of the connecting plate (27).

8. A method for filtering and extracting heavy metals from industrial wastewater, characterized in that: The heavy metal filtration and extraction device for industrial wastewater according to any one of claims 1 to 7 is used for extraction, comprising the following steps: S1, waste water is sprayed into the interior of the filter box (1) through the water inlet pipe (9), the first water spray pipe (7) and the plurality of first water spray nozzles (8), the waste water is filtered through the filter plate (4), and the heavy metals in the waste water are filtered out, the bottom of the filter plate (4) is washed by the waste water sprayed by the plurality of first water spray nozzles (8), so as to prevent the heavy metals from being adsorbed on the filter plate (4) and causing the filter plate (4) to be blocked, and the filter plate (4) is shaken up and down by the action of two slide plates (5) and the plurality of springs (6), so as to facilitate shaking off the heavy metals on the filter plate (4) and causing the heavy metals to fall into the interior of the collection bucket (10); S2, the collecting bucket (10) is pushed upward by four electric cylinders (11), so that the collecting bucket (10) pushes the wastewater on the upper side of the collecting bucket (10) to move upward, and the inside of the filter box (1) is discharged through the first connecting pipe (15), and then the solenoid valve (13) is opened to discharge the heavy metals inside the collecting bucket (10) through the first discharge pipe (12), the telescopic pipe (39) and the second discharge pipe (38), and the heavy metals are collected. In this process, the top rigid material and the bottom flexible material of the collecting bucket body are designed with differentiated materials, so that when the top of the output end of the rod body of the four electric cylinders (11) drives the collecting bucket (10) to move upward, the flexible material at the top is deformed first, thereby providing a gradual lifting force before the entire collecting bucket is driven to move, rather than a direct impact force, so that when the mixture after heavy metal filtration and precipitation is discharged into liquid, the separated heavy metals will not be stirred up again and mixed with the waste liquid; S3, the waste water filtered by the filter plate (4) is transported to the interior of a plurality of water distribution boxes (16) through a water pump (14), the waste water in the plurality of water distribution boxes (16) is sprayed onto a plurality of heating plates (26) through a third connecting pipe (23), a second water spray pipe (21) and a plurality of second water spray nozzles (22), the waste water is heated by the plurality of heating plates (26), and the waste water flowing to the bottom of the distillation box (3) is heated by the heating box (34), so that the waste water evaporates to form steam, the steam enters the interior of the gas collecting box (2) through a fourth connecting pipe (24), and heavy metals in the waste water are adsorbed by the adsorption plate (35), the steam entering the interior of the gas collecting box (2) through the fourth connecting pipe (24) is cooled by the plurality of water distribution boxes (16), so that the steam is cooled to form water droplets that fall to the bottom of the gas collecting box (2), and the waste water inside the water distribution boxes (16) absorbs heat, and the heat of the steam is reused; S4. The reciprocating screw (29) is driven to rotate by the motor (32), so that the sliding sleeve (30), the connecting plate (27) and the plurality of scraper sleeves (28) move up and down. The heavy metal adsorbed on the heating plate (26) is scraped off by the scraper sleeve (28), so that the surface of the plurality of heating plates (26) is kept clean, thereby improving the effect of the plurality of heating plates (26) heating the wastewater. At the same time, the reciprocating screw drives the rotating shaft (36) to rotate, and the rotating shaft (36) drives the stirring plate (37) to rotate. The stirring plate (37) stirs the wastewater at the bottom of the distillation box (3), so that the wastewater is evenly heated and the efficiency of the wastewater distillation is improved. At the same time, the top of the adsorption plate (35) is scraped to prevent the adsorption plate (35) from being blocked by excessive heavy metals, thereby improving the adsorption effect of the adsorption plate (35).

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