Fly ash washing filtrate advanced treatment device with targeted purification function

Abstract

The invention discloses a fly ash water-washing filtrate advanced treatment device with a targeted purification function, and relates to the technical field of fly ash filtrate treatment and separation, the fly ash water-washing filtrate advanced treatment device comprises a filter cartridge, a purification unit, a separation unit and a dosing unit, the filter cartridge is used for installing and fixing the purification unit, the separation unit and the dosing unit, the purification unit is used for performing targeted purification on magnetic ions in the washing fly ash filtrate, the separation unit is used for performing targeted purification on other pollutants in the washing fly ash filtrate, the chemical adding unit is used for adding chemicals into the filtrate and purifying the filtrate, and after the washing fly ash filtrate passes through the purification unit to remove the magnetic ions, the separation unit is used for separating other pollutants in the washing fly ash filtrate. Pollutants in the washing fly ash filtrate are fully settled and separated through the cooperation of the separation unit and the dosing unit, so that the washing fly ash filtrate is purified, and the emission standard is met.

Description

Technical Field

[0001] The invention relates to the technical field of fly ash filtrate treatment and separation, in particular to a fly ash water washing filtrate deep treatment device with a targeted purification function. Background Art

[0002] With the widespread adoption of waste-to-energy incineration technology, fly ash production, a byproduct of waste incineration, is increasing. Fly ash contains significant quantities of heavy metals, chloride salts, and other harmful substances. Direct discharge without proper treatment can cause severe pollution to the soil, water, and atmosphere. Water washing is a common method for treating fly ash. While it effectively removes soluble chloride salts and other impurities, it also produces significant amounts of fly ash wash filtrate.

[0003] Fly ash wash filtrate has a complex composition, containing not only a variety of heavy metal ions (such as lead, mercury, cadmium, and chromium), but also large amounts of suspended particulate matter, colloids, and organic pollutants. Direct discharge of these pollutants without advanced treatment poses a serious threat to the ecological environment and human health. Therefore, advanced treatment of fly ash wash filtrate to effectively remove these various pollutants is a critical issue currently under investigation in the environmental protection field.

[0004] Fly ash wash filtrate contains both magnetic and non-magnetic materials. Magnetic materials primarily originate from ferromagnetic impurities in the fly ash, such as iron oxides; non-magnetic materials include heavy metal ions, non-magnetic suspended particles, colloids, and organic contaminants. Efficient separation of magnetic and non-magnetic materials is crucial for subsequent advanced processing.

[0005] After the magnetic and non-magnetic materials have been separated, the non-magnetic filtrate still contains a large amount of harmful substances such as heavy metal ions, suspended particles, colloids, and organic pollutants, requiring further purification. Furthermore, most existing non-magnetic filtrate purification technologies lack the ability to target specific pollutants. They are unable to efficiently and accurately treat the characteristics of different pollutants in the fly ash wash filtrate, resulting in unsatisfactory purification results and difficulty meeting increasingly stringent environmental emission standards.

[0006] During fly ash washing filtrate treatment, the filter, a key filtration component, is susceptible to clogging by suspended particles, colloids, and other substances in the filtrate. Filter clogging not only reduces filtration efficiency and throughput, but also increases filtration resistance, increasing energy consumption and, in severe cases, even causing equipment to malfunction. Summary of the Invention

[0007] The object of the present invention is to provide a fly ash washing filtrate deep treatment device with targeted purification function to solve the problems raised in the prior art.

[0008] To achieve the above object, the present invention provides the following technical solutions: The deep treatment device for fly ash washing filtrate with targeted purification function includes a filter cylinder, a purification unit, a separation unit and a dosing unit. The filter cylinder is placed on a horizontal workbench. The filter cylinder is fixedly connected to the purification unit. The purification unit is electrically connected to the separation unit. The separation unit is fixedly connected to the filter cylinder. The separation unit is electrically connected to the dosing unit. The separation unit has the function of controlling the dosing of the dosing unit. The dosing unit is fixedly connected to the filter cylinder.

[0009] The filter cylinder is used to install and fix the purification unit, the separation unit and the dosing unit. The purification unit is used to target and purify the magnetic ions in the washed fly ash filtrate. The separation unit is used to separate other pollutants in the washed fly ash filtrate. The dosing unit is used to add medicaments to the filtrate to purify the filtrate. After the magnetic ions in the washed fly ash filtrate are removed by the purification unit, the separation unit cooperates with the dosing unit to fully sediment and separate the pollutants in the washed fly ash filtrate, realizing the purification of the washed fly ash filtrate and meeting the discharge standard.

[0010] Further, the filter cylinder is composed of an inner cylinder and an outer cylinder. The inner cylinder inlet and the outer cylinder inlet are fixedly connected by a connecting block. The bottom of the outer cylinder is provided with a detachable bottom cover.

[0011] Further, the purification unit includes a rotary telescopic motor, a stirring rod, a flexible magnetic plate, a magnetic block, a connecting plate, a first filter plate and an electric telescopic ring plate. The fixed end of the rotary telescopic motor is fixedly installed at the inner cylinder inlet through the connecting plate. The output end of the rotary telescopic motor is fixedly connected to the stirring rod. The bottom of the flexible magnetic plate abuts against the upper surface of the first filter plate. The flexible magnetic plate is fixedly connected to the stirring rod. One end of the stirring rod close to the horizontal workbench is fixedly connected to the magnetic block. The first filter plate is fixedly installed at the output end of the rotary telescopic motor. The fixed end of the electric telescopic ring plate is fixedly installed on the inner wall of the outer cylinder. The telescopic end of the electric telescopic ring plate abuts against the edge of the first filter plate. The electric telescopic ring plate is electrically connected to the separation unit.

[0012] Further, the extension speed of the rotary telescopic motor is less than the contraction speed, and the centrifugal force generated by the contraction of the rotary telescopic motor is greater than the magnetic force of the flexible magnetic plate.

[0013] When the washed fly ash filtrate enters the inner cylinder through the channel between the inner cylinder and the outer cylinder, the controller controls the rotary telescopic motor to start and drive the stirring rod to rotate, thereby driving the flexible magnetic plate and the first filter plate to rotate synchronously. During the rotation of the flexible magnetic plate, the magnetic ions in the washed fly ash filtrate are adsorbed to separate the magnetic ions in the washed fly ash filtrate. The remaining filtrate passes through the first filter plate and enters the second filter plate to further separate the impurities in the washed fly ash filtrate.

[0014] Further, the separation unit includes a drive coil, a second filter plate, a fixed block, a telescopic spring, a slider and a ring groove. The drive coil is fixedly installed on the outer surface of the inner cylinder. The drive coil is electrically connected to the electric telescopic ring plate. The second filter plate is slidably installed on the inner wall of the inner cylinder. One end of the fixed block is fixedly connected to the lower surface of the second filter plate, and the other end is fixedly connected to one end of the telescopic spring. The other end of the telescopic spring is fixedly connected to the slider. The slider is slidably installed in the ring groove. The ring groove is fixedly installed on the inner wall of the inner cylinder. A circular groove is provided on the second filter plate, and an electromagnet is placed in the circular groove. The drive coil is electrically connected to the chemical dosing unit.

[0015] Further, the separation unit further includes a return spring, a fixing plate, a conductive plate, an electric push plate, a column and a stirring plate. One end of the return spring is fixedly connected to the slider, and the other end is fixedly connected to the fixing plate. The fixing plate is fixedly installed in the ring groove. The fixing plate is fixedly connected to the conductive plate through a connecting rod. The fixed end of the electric push plate is fixedly installed at the end of the column away from the horizontal workbench. A conductive sheet is provided at one end of the fixed end of the electric push plate close to the conductive plate. The column is internally connected to the inner cylinder close to the horizontal workbench through a torsion spring. The stirring plate is fixedly installed on the column.

[0016] Further, the conductive sheet on the electric push plate is electrically connected to the conductive plate, and the telescopic end of the electric push plate is arranged at the end away from the horizontal workbench.

[0017] While the rotating telescopic motor extends, it drives the magnetic block to rotate. When the magnetic block moves downward, it changes the magnetic flux of the drive coil, thereby generating a positive current in the drive coil. The positive current generated by the drive coil is transmitted to the electromagnet, making the electromagnet present a polarity opposite to that of the magnetic block. During the downward movement of the magnetic block, it adsorbs to the magnet, driving the second filter plate to rotate downward, thereby squeezing the telescopic spring to contract. During the rotation of the second filter plate, under the action of the telescopic spring and the fixed block, it drives the slider to rotate along the ring groove. During the rotation of the slider, it squeezes the return spring. When the telescopic spring, the fixed block and the slider rotate to contact the electric push plate, it pushes the electric push plate to drive the column and the stirring plate to rotate. When the conductive sheet on the electric push plate contacts the conductive plate on the fixing plate during the rotation of the electric push plate, the current of the external controller is transmitted to the conductive sheet through the conductive plate, thereby controlling the electric push plate to start. The electric push plate quickly pops up upward, hitting the lower surface of the filter plate to vibrate the impurities attached to the surface of the second filter plate, avoiding clogging of the filter holes and affecting the filtration efficiency.

[0018] Further, the chemical dosing unit includes a chemical dosing tank, a slide plate, a screw, a circular ring frame, and a first electric push rod. The chemical dosing tank is fixedly installed on the inner surface of the inner cylinder near one end of the horizontal workbench. The slide plate is slidably installed inside the chemical dosing tank. The slide plate is provided with an internal thread matching the screw. The screw is fixedly installed on the inner surface of the inner cylinder near one end of the horizontal workbench. The circular ring frame is fixedly connected to the slide plate. The fixed end of the first electric push rod is fixedly installed on the outer surface of the circular ring frame. The first electric push rod is electrically connected to the drive coil.

[0019] Further, the chemical dosing unit further includes a second electric push rod, an upper elastic telescopic frame, a lower elastic telescopic frame, and a medicine outlet. The fixed end of the second electric push rod is fixedly installed on the outer surface of the circular ring frame. The second electric push rod is electrically connected to the drive coil. One end of the upper elastic telescopic frame is fixedly connected to the slide plate through an elastic film, and the other end is rotatably connected to the upper part of the chemical dosing tank. One end of the lower elastic telescopic frame is fixedly connected to the slide plate through an elastic film, and the other end is rotatably connected to the lower part of the chemical dosing tank. The chemical dosing tank is provided with a medicine outlet at the end far from the horizontal workbench. A one-way valve is arranged in the medicine outlet. The chemical dosing tank contains the medicine.

[0020] Further, the first electric push rod and the second electric push rod are alternately arranged on the outer surface of the circular ring frame.

[0021] When a part of the positive current generated in the drive coil is transmitted to the first electric push rod and the second electric push rod, the number of positive current times generated by the drive coil is fed back to be recorded by the controller. When the number of positive current times generated by the drive coil is even, the controller controls the circuit of the first electric push rod to conduct. At this time, the first electric push rod extends, and the second electric push rod contracts. During the rotation of the stirring plate, while pushing the first electric push rod to drive the circular ring frame and the slide plate to rotate upward around the screw, the upper elastic telescopic frame and the lower elastic telescopic frame are driven to rotate synchronously, thereby driving the slide plate to move upward, extruding the medicine inside the chemical dosing tank from the medicine outlet and mixing it with the washed fly ash filtrate, and fully reacting under the action of the rotation of the stirring plate, so as to carry out a neutralization reaction on the harmful ions inside and meet the emission standard. When the number of positive current times generated by the drive coil is odd, the controller controls the circuit of the second electric push rod to conduct. At this time, the second electric push rod extends, and the first electric push rod contracts. During the rotation of the stirring plate, while pushing the second electric push rod to drive the circular ring frame and the slide plate to rotate upward around the screw, the upper elastic telescopic frame and the lower elastic telescopic frame are driven to rotate synchronously, and continue to extrude the medicine inside the chemical dosing tank from the medicine outlet and mix it fully with the washed fly ash filtrate.

[0022] When the controller controls the rapid contraction of the rotary telescopic motor, it drives the magnetic block to move upward, thereby changing the magnetic flux again and causing the drive coil to generate a reverse current. At this time, the reverse current generated by the drive coil is transmitted to the electric telescopic ring plate, causing the electric telescopic ring plate to contract. The magnetic ions attached to the flexible magnetic plate are thrown out to the edge of the electric telescopic ring plate under the action of high centrifugal force, and then fall into the space between the outer cylinder and the inner cylinder under the blocking action of the electric telescopic ring plate, thus realizing the targeted purification and separation of magnetic ions in the washed fly ash filtrate and avoiding environmental pollution caused by emissions.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When the washed fly ash filtrate enters the inner cylinder through the channel between the inner cylinder and the outer cylinder, the controller controls the rotary telescopic motor to start and drive the stirring rod to rotate, thereby driving the flexible magnetic plate and the filter plate to rotate synchronously. During the rotation of the flexible magnetic plate, the magnetic ions in the washed fly ash filtrate are adsorbed, so as to separate the magnetic ions in the washed fly ash filtrate. The remaining filtrate passes through the first filter plate and enters the second filter plate to further separate the impurities in the washed fly ash filtrate.

[0024] 2. When the rotary telescopic motor extends, it drives the magnetic block to rotate at the same time. When the magnetic block moves downward, the magnetic flux of the drive coil is changed, thereby generating a positive current in the drive coil. The positive current generated by the drive coil is transmitted to the electromagnet, making the electromagnet present a polarity opposite to that of the magnetic block. During the downward movement of the magnetic block, it adsorbs with the magnet, driving the second filter plate to rotate downward, thereby squeezing the telescopic spring to contract. During the rotation of the second filter plate, under the action of the telescopic spring and the fixed block, the slider is driven to rotate along the annular groove. During the rotation of the slider, the return spring is squeezed. When the telescopic spring, the fixed block and the slider rotate to contact the electric push plate, the electric push plate is pushed to drive the column and the stirring plate to rotate. When the conductive sheet on the electric push plate contacts the conductive plate on the fixed plate during the rotation of the electric push plate, the current of the external controller passes through the conductive plate and is transmitted to the conductive sheet, thereby controlling the electric push plate to start and quickly pop up upward, hitting the lower surface of the filter plate to vibrate the impurities attached to the surface of the second filter plate and avoiding blockage of the filter holes and affecting the filtration efficiency.

[0025] 3. When a part of the forward current generated in the drive coil is supplied to the first electric push rod and the second electric push rod, the number of times of the forward current generated by the drive coil is fed back to be recorded by the controller. When the number of times of the forward current generated by the drive coil is an even number, the controller controls the circuit of the first electric push rod to conduct. At this time, the first electric push rod extends, and the second electric push rod contracts. During the rotation of the stirring plate, while driving the first electric push rod to drive the ring frame and the sliding plate to rotate upward around the screw rod, it drives the upper elastic telescopic frame and the lower elastic telescopic frame to rotate synchronously, thereby driving the sliding plate to move upward, extruding the medicament inside the medicine adding tank from the medicine outlet and mixing it with the washed fly ash filtrate, and fully reacting under the action of the rotation of the stirring plate, so as to carry out a neutralization reaction on the harmful ions inside and reach the emission standard. When the number of times of the forward current generated by the drive coil is an odd number, the controller controls the circuit of the second electric push rod to conduct. At this time, the second electric push rod extends, and the first electric push rod contracts. During the rotation of the stirring plate, while driving the second electric push rod to drive the ring frame and the sliding plate to rotate upward around the screw rod, it drives the upper elastic telescopic frame and the lower elastic telescopic frame to rotate synchronously, and continues to extrude the medicament inside the medicine adding tank from the medicine outlet and mix it fully with the washed fly ash filtrate.

[0026] 4. When the controller controls the rapid contraction of the rotary telescopic motor, it drives the magnetic block to move upward, thereby changing the magnetic flux again and causing the drive coil to generate a reverse current. At this time, the reverse current generated by the drive coil is supplied to the electric telescopic ring plate, so that the electric telescopic ring plate contracts. The magnetic ions attached to the flexible magnetic plate are thrown out to the edge of the electric telescopic ring plate under the action of high centrifugal force, and thus fall into the space between the outer cylinder and the inner cylinder under the blocking action of the electric telescopic ring plate, thereby realizing the targeted purification and separation of the magnetic ions in the washed fly ash filtrate and avoiding environmental pollution caused by emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall external structure of a fly ash washing filtrate deep treatment device with a targeted purification function according to the present invention; Figure 2 is a schematic diagram of the top view structure of a fly ash washing filtrate deep treatment device with a targeted purification function according to the present invention; Figure 3 is a fly ash washing filtrate deep treatment device with a targeted purification function according to the present invention Figure 2 sectional view structure diagram at A - A; Figure 4 is a schematic diagram of the internal structure of the filter cylinder of a fly ash washing filtrate deep treatment device with a targeted purification function according to the present invention; Figure 5 is a schematic diagram of the installation position structure of the drive coil of a fly ash washing filtrate deep treatment device with a targeted purification function according to the present invention; Figure 6 Schematic diagram of the installation positions of the fixed block, telescopic spring, slider and annular groove of a deep treatment device for fly ash washing filtrate with a targeting purification function according to the present invention; Figure 7 Schematic diagram of the installation positions of some separation units of a deep treatment device for fly ash washing filtrate with a targeting purification function according to the present invention; Figure 8 A deep treatment device for fly ash washing filtrate with a targeting purification function according to the present invention Figure 7 Schematic diagram of another perspective structure; Figure 9 A deep treatment device for fly ash washing filtrate with a targeting purification function according to the present invention Figure 8 Schematic diagram of the enlarged view of the partial structure at position B in the present invention;

[0028] In the figure: 1. Filter cylinder; 11. Inner cylinder; 12. Outer cylinder; 2. Purification unit; 21. Rotary telescopic motor; 22. Stirring rod; 23. Flexible magnetic plate; 24. Magnetic block; 25. Connecting plate; 26. First filter plate; 27. Electrically telescopic annular plate; 3. Separation unit; 31. Driving coil; 32. Second filter plate; 33. Fixed block; 34. Telescopic spring; 35. Slider; 36. Annular groove; 37. Reset spring; 38. Fixed plate; 39. Conductive plate; 310. Electric push plate; 311. Column; 312. Stirring plate; 4. Chemical dosing unit; 41. Chemical dosing tank; 42. Slide plate; 43. Screw; 44. Circular ring frame; 45. First electric push rod; 46. Second electric push rod; 47. Upper elastic telescopic frame; 48. Lower elastic telescopic frame; 49. Chemical outlet. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] Embodiment: As Figures 1 - 9 shown, the present invention provides a technical solution: As Figure 1 、 Figure 3As shown in the figure, a deep treatment device for fly ash washing filtrate with targeted purification function includes a filter cylinder 1, a purification unit 2, a separation unit 3 and a dosing unit 4. The filter cylinder 1 is placed on a horizontal workbench. The filter cylinder 1 is fixedly connected to the purification unit 2. The purification unit 2 is electrically connected to the separation unit 3. The separation unit 3 is fixedly connected to the filter cylinder 1. The separation unit 3 is electrically connected to the dosing unit 4. The separation unit 3 has the function of controlling the dosing of the dosing unit 4. The dosing unit 4 is fixedly connected to the filter cylinder 1.

[0031] The filter cylinder 1 is used to install and fix the purification unit 2, the separation unit 3 and the dosing unit 4. The purification unit 2 is used to target and purify the magnetic ions in the washed fly ash filtrate. The separation unit 3 is used to separate other pollutants in the washed fly ash filtrate. The dosing unit 4 is used to add medicaments to the filtrate to purify the filtrate. After the washed fly ash filtrate removes magnetic ions through the purification unit 2, it passes through the separation unit 3 in cooperation with the dosing unit 4 to fully sediment and separate the pollutants in the washed fly ash filtrate, realizing the purification of the washed fly ash filtrate and meeting the discharge standard.

[0032] Further, the filter cylinder 1 is composed of an inner cylinder 11 and an outer cylinder 12. The inlet of the inner cylinder 11 and the inlet of the outer cylinder 12 are fixedly connected by a connecting block. The bottom of the outer cylinder 12 is provided with a detachable bottom cover.

[0033] As Figure 3 shown in the figure, the filter cylinder 1 is composed of an inner cylinder 11 and an outer cylinder 12. The inlet of the inner cylinder 11 and the inlet of the outer cylinder 12 are fixedly connected by a connecting block. The bottom of the outer cylinder 12 is provided with a detachable bottom cover.

[0034] As Figures 2 - 5 shown in the figure, the purification unit 2 includes a rotary telescopic motor 21, a stirring rod 22, a flexible magnetic plate 23, a magnetic block 24, a connecting plate 25, a first filter plate 26 and an electric telescopic ring plate 27. The fixed end of the rotary telescopic motor 21 is fixedly installed at the inlet of the inner cylinder 11 through the connecting plate 25. The output end of the rotary telescopic motor 21 is fixedly connected to the stirring rod 22. The bottom of the flexible magnetic plate 23 abuts against the upper surface of the first filter plate 26. The flexible magnetic plate 23 is fixedly connected to the stirring rod 22. One end of the stirring rod 22 close to the horizontal workbench is fixedly connected to the magnetic block 24. The first filter plate 26 is fixedly installed at the output end of the rotary telescopic motor 21. The fixed end of the electric telescopic ring plate 27 is fixedly installed on the inner wall of the outer cylinder 12. The telescopic end of the electric telescopic ring plate 27 abuts against the edge of the first filter plate 26. The electric telescopic ring plate 27 is electrically connected to the separation unit 3.

[0035] As Figure 4 shown in the figure, the extending speed of the rotary telescopic motor 21 is less than the contracting speed, and the centrifugal force generated by the contraction of the rotary telescopic motor 21 is greater than the magnetic force of the flexible magnetic plate 23.

[0036] When the washing fly ash filtrate enters the inner cylinder 11 through the channel between the inner cylinder 11 and the outer cylinder 12, the controller controls the rotation and telescopic motor 21 to start and drive the stirring rod 22 to rotate, thereby driving the flexible magnetic plate 23 and the first filter plate 26 to rotate synchronously. During the rotation of the flexible magnetic plate 23, the magnetic ions in the washing fly ash filtrate are adsorbed to separate the magnetic ions from the washing fly ash filtrate. The remaining filtrate passes through the first filter plate 26 and enters the second filter plate 32 to further separate the impurities in the washing fly ash filtrate.

[0037] As Figure 5 , Figure 6 shown, the separation unit 3 includes a drive coil 31, a second filter plate 32, a fixed block 33, a telescopic spring 34, a slider 35 and a ring groove 36. The drive coil 31 is fixedly installed on the outer surface of the inner cylinder 11. The drive coil 31 is electrically connected to the electric telescopic ring plate 27. The second filter plate 32 is slidably installed on the inner wall of the inner cylinder 11. One end of the fixed block 33 is fixedly connected to the lower surface of the second filter plate 32, and the other end is fixedly connected to one end of the telescopic spring 34. The other end of the telescopic spring 34 is fixedly connected to the slider 35. The slider 35 is slidably installed in the ring groove 36. The ring groove 36 is fixedly installed on the inner wall of the inner cylinder 11. A circular groove is provided on the second filter plate 32, and an electromagnet is placed in the circular groove. The drive coil 31 is electrically connected to the dosing unit 4.

[0038] As Figure 7 shown, the separation unit 3 further includes a return spring 37, a fixing plate 38, a conductive plate 39, an electric push plate 310, a column 311 and a stirring plate 312. One end of the return spring 37 is fixedly connected to the slider 35, and the other end is fixedly connected to the fixing plate 38. The fixing plate 38 is fixedly installed in the ring groove 36. The fixing plate 38 is fixedly connected to the conductive plate 39 through a connecting rod. The fixed end of the electric push plate 310 is fixedly installed at the end of the column 311 far from the horizontal workbench. A conductive sheet is provided at one end of the fixed end of the electric push plate 310 close to the conductive plate 39. The column 311 is internally connected to the inner cylinder 11 near the horizontal workbench through a torsion spring. The stirring plate 312 is fixedly installed on the column 311.

[0039] As Figure 7 shown, the conductive sheet on the electric push plate 310 is electrically connected to the conductive plate 39, and the telescopic end of the electric push plate 310 is arranged at the end far from the horizontal workbench.

[0040] While the rotary telescopic motor 21 extends, it drives the magnetic block 24 to rotate. When the magnetic block 24 moves downward, it changes the magnetic flux of the drive coil 31, thereby generating a positive current in the drive coil 31. The positive current generated by the drive coil 31 is supplied to the electromagnet, making the electromagnet exhibit a polarity opposite to that of the magnetic block 24. During the downward movement of the magnetic block 24, it adsorbs to the magnet, driving the second filter plate 32 to rotate downward, thereby squeezing the telescopic spring 34 to contract. During the rotation of the second filter plate 32, under the action of the telescopic spring 34 and the fixed block 33, the slider 35 is driven to rotate along the annular groove 36. During the rotation of the slider 35, the return spring 37 is squeezed. When the telescopic spring 34, the fixed block 33, and the slider 35 rotate to contact the electric push plate 310, the electric push plate 310 is pushed to drive the column 311 and the stirring plate 312 to rotate. When the conductive piece on the electric push plate 310 contacts the conductive plate 39 on the fixed plate 38 during the rotation of the electric push plate 310, the current from the external controller is supplied to the conductive piece through the conductive plate 39, thereby controlling the electric push plate 310 to start. The electric push plate 310 quickly pops upward, hitting the lower surface of the filter plate to vibrate the impurities attached to the surface of the second filter plate 32, preventing the filter holes from being blocked and affecting the filtration efficiency.

[0041] As Figure 8 , Figure 9 shown, the chemical addition unit 4 includes a chemical addition tank 41, a slide plate 42, a screw 43, a circular ring frame 44, and a first electric push rod 45. The chemical addition tank 41 is fixedly installed on the inner surface of one end of the inner cylinder 11 close to the horizontal workbench. The slide plate 42 is slidably installed inside the chemical addition tank 41. The slide plate 42 is provided with an internal thread matching the screw 43. The screw 43 is fixedly installed on the inner surface of one end of the inner cylinder 11 close to the horizontal workbench. The circular ring frame 44 is fixedly connected to the slide plate 42. The fixed end of the first electric push rod 45 is fixedly installed on the outer surface of the circular ring frame 44. The first electric push rod 45 is electrically connected to the drive coil 31.

[0042] As Figure 9 shown, the chemical addition unit 4 further includes a second electric push rod 46, an upper elastic telescopic frame 47, a lower elastic telescopic frame 48, and a chemical outlet 49. The fixed end of the second electric push rod 46 is fixedly installed on the outer surface of the circular ring frame 44. The second electric push rod 46 is electrically connected to the drive coil 31. One end of the upper elastic telescopic frame 47 is fixedly connected to the slide plate 42 through an elastic membrane, and the other end is rotatably connected to the upper part of the chemical addition tank 41. One end of the lower elastic telescopic frame 48 is fixedly connected to the slide plate 42 through an elastic membrane, and the other end is rotatably connected to the lower part of the chemical addition tank 41. The chemical addition tank 41 is provided with a chemical outlet 49 at one end away from the horizontal workbench. A one-way valve is arranged in the chemical outlet 49. The chemical addition tank 41 contains chemicals.

[0043] As Figure 9 shown, the first electric push rod 45 and the second electric push rod 46 are alternately arranged on the outer surface of the circular ring frame 44.

[0044] When a part of the forward current generated in the drive coil 31 is sent to the first electric push rod 45 and the second electric push rod 46, the number of times of the forward current generated by the drive coil 31 is fed back and recorded by the controller. When the number of times of the forward current generated by the drive coil 31 is an even number, the controller controls the circuit of the first electric push rod 45 to conduct. At this time, the first electric push rod 45 extends, and the second electric push rod 46 contracts. During the rotation of the stirring plate 312, while pushing the first electric push rod 45 to drive the ring frame 44 and the sliding plate 42 to rotate upward around the screw rod 43, it drives the upper elastic telescopic frame 47 and the lower elastic telescopic frame 48 to rotate synchronously, thereby driving the sliding plate 42 to move upward, squeezing the medicament inside the medicine adding tank 41 out of the medicine outlet 49 and mixing it with the water-washed fly ash filtrate, and fully reacting under the action of the rotation of the stirring plate 312, so as to carry out a neutralization reaction on the harmful ions inside and meet the discharge standard. When the number of times of the forward current generated by the drive coil 31 is an odd number, the controller controls the circuit of the second electric push rod 46 to conduct. At this time, the second electric push rod 46 extends, and the first electric push rod 45 contracts. During the rotation of the stirring plate 312, while pushing the second electric push rod 46 to drive the ring frame 44 and the sliding plate 42 to rotate upward around the screw rod 43, it drives the upper elastic telescopic frame 47 and the lower elastic telescopic frame 48 to rotate synchronously, and continues to squeeze the medicament inside the medicine adding tank 41 out of the medicine outlet 49 and mix it fully with the water-washed fly ash filtrate.

[0045] When the controller controls the rapid contraction of the rotary telescopic motor 21, it drives the magnetic block 24 to move upward, thereby changing the magnetic flux again and causing the drive coil 31 to generate a reverse current. At this time, the reverse current generated by the drive coil 31 is sent to the electric telescopic ring plate 27, so that the electric telescopic ring plate 27 contracts. The magnetic ions attached to the flexible magnetic plate 23 are thrown out to the edge of the electric telescopic ring plate 27 under the action of high centrifugal force, and thus fall into the space between the outer cylinder 12 and the inner cylinder 11 under the blocking action of the electric telescopic ring plate 27, thereby realizing the targeted purification and separation of the magnetic ions in the water-washed fly ash filtrate and avoiding environmental pollution caused by emissions.

[0046] The working principle of the present invention: When the water-washed fly ash filtrate enters the inner cylinder 11 through the channel between the inner cylinder 11 and the outer cylinder 12, the controller controls the rotary telescopic motor 21 to start and drive the stirring rod 22 to rotate, thereby driving the flexible magnetic plate 23 and the first filter plate 26 to rotate synchronously. During the rotation of the flexible magnetic plate 23, the magnetic ions in the water-washed fly ash filtrate are adsorbed, so as to separate the magnetic ions in the water-washed fly ash filtrate. The remaining filtrate passes through the first filter plate 26 and enters the second filter plate 32 to further separate the impurities in the water-washed fly ash filtrate.

[0047] While the rotary telescopic motor 21 extends, it drives the magnetic block 24 to rotate. When the magnetic block 24 moves downward, it changes the magnetic flux of the drive coil 31, thereby generating a positive current in the drive coil 31. The positive current generated by the drive coil 31 is transmitted to the electromagnet, making the electromagnet exhibit a polarity opposite to that of the magnetic block 24. During the downward movement of the magnetic block 24, it adsorbs to the magnet, driving the second filter plate 32 to rotate downward, thereby squeezing the telescopic spring 34 to contract. During the rotation of the second filter plate 32, under the action of the telescopic spring 34 and the fixed block 33, the slider 35 is driven to rotate along the annular groove 36. During the rotation of the slider 35, the return spring 37 is squeezed. When the telescopic spring 34, the fixed block 33, and the slider 35 rotate to contact the electric push plate 310, the electric push plate 310 is pushed to drive the column 311 and the stirring plate 312 to rotate. When the conductive piece on the electric push plate 310 contacts the conductive plate 39 on the fixed plate 38 during the rotation of the electric push plate 310, the current from the external controller is transmitted to the conductive piece through the conductive plate 39, thereby controlling the electric push plate 310 to start and quickly pop up upward, hitting the lower surface of the filter plate to vibrate the impurities attached to the surface of the second filter plate 32, avoiding clogging of the filter holes and affecting the filtration efficiency.

[0048] When a part of the positive current generated in the drive coil 31 is transmitted to the first electric push rod 45 and the second electric push rod 46, the number of times of the positive current generated by the drive coil 31 is fed back to be recorded by the controller. When the number of times of the positive current generated by the drive coil 31 is an even number, the controller controls the circuit of the first electric push rod 45 to conduct. At this time, the first electric push rod 45 extends and the second electric push rod 46 contracts. During the rotation of the stirring plate 312, the first electric push rod 45 is pushed to drive the circular ring frame 44 and the sliding plate 42 to rotate upward around the screw rod 43, while driving the upper elastic telescopic frame 47 and the lower elastic telescopic frame 48 to rotate synchronously, thereby driving the sliding plate 42 to move upward, squeezing the medicine in the medicine adding tank 41 out of the medicine outlet 49 to be mixed with the washed fly ash filtrate, and fully reacting under the action of the rotation of the stirring plate 312, thereby carrying out a neutralization reaction on the harmful ions inside to meet the discharge standard. When the number of times of the positive current generated by the drive coil 31 is an odd number, the controller controls the circuit of the second electric push rod 46 to conduct. At this time, the second electric push rod 46 extends and the first electric push rod 45 contracts. During the rotation of the stirring plate 312, the second electric push rod 46 is pushed to drive the circular ring frame 44 and the sliding plate 42 to rotate upward around the screw rod 43, while driving the upper elastic telescopic frame 47 and the lower elastic telescopic frame 48 to rotate synchronously, and continuing to squeeze the medicine in the medicine adding tank 41 out of the medicine outlet 49 to be fully mixed with the washed fly ash filtrate.

[0049] When the controller controls the rapid contraction of the rotary telescopic motor 21, it drives the magnetic block 24 to move upward, thereby changing the magnetic flux again and causing the drive coil 31 to generate a reverse current. At this time, the reverse current generated by the drive coil 31 is transmitted to the electric telescopic ring plate 27, so that the electric telescopic ring plate 27 contracts. The magnetic ions attached to the flexible magnetic plate 23 are thrown out to the edge of the electric telescopic ring plate 27 under the action of high centrifugal force, and thus fall into the space between the outer cylinder 12 and the inner cylinder 11 under the blocking action of the electric telescopic ring plate 27, thereby realizing the targeted purification and separation of the magnetic ions in the washed fly ash filtrate and avoiding environmental pollution caused by emissions.

[0050] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A deep treatment device for fly ash washing filtrate with a targeted purification function, characterized in that: The described deep treatment device for fly ash washing filtrate with targeted purification function includes a filter cylinder (1), a purification unit (2), a separation unit (3), and a dosing unit (4). The filter cylinder (1) is placed on a horizontal workbench. The filter cylinder (1) is fixedly connected to the purification unit (2). The purification unit (2) is electrically connected to the separation unit (3). The separation unit (3) is fixedly connected to the filter cylinder (1). The separation unit (3) is electrically connected to the dosing unit (4). The separation unit (3) has the function of controlling the dosing of the dosing unit (4). The dosing unit (4) is fixedly connected to the filter cylinder (1).

2. The deep treatment device for fly ash washing filtrate with targeted purification function according to claim 1, wherein: The filter cylinder (1) is composed of an inner cylinder (11) and an outer cylinder (12). The feeding port of the inner cylinder (11) is fixedly connected to the feeding port of the outer cylinder (12) through a connecting block. A detachable bottom cover is provided at the bottom of the outer cylinder (12).

3. The deep treatment device for fly ash washing filtrate with a targeted purification function according to claim 2, characterized in that: The purification unit (2) includes a rotary telescopic motor (21), a stirring rod (22), a flexible magnetic plate (23), a magnetic block (24), a connecting plate (25), a first filter plate (26), and an electric telescopic ring plate (27). The fixed end of the rotary telescopic motor (21) is fixedly installed at the feeding port of the inner cylinder (11) through the connecting plate (25). The output end of the rotary telescopic motor (21) is fixedly connected to the stirring rod (22). The bottom of the flexible magnetic plate (23) abuts against the upper surface of the first filter plate (26). The flexible magnetic plate (23) is fixedly connected to the stirring rod (22). One end of the stirring rod (22) close to the horizontal workbench is fixedly connected to the magnetic block (24). The first filter plate (26) is fixedly installed at the output end of the rotary telescopic motor (21). The fixed end of the electric telescopic ring plate (27) is fixedly installed on the inner wall of the outer cylinder (12). The telescopic end of the electric telescopic ring plate (27) abuts against the edge of the first filter plate (26). The electric telescopic ring plate (27) is electrically connected to the separation unit (3).

4. The deep treatment device for fly ash washing filtrate with a targeted purification function according to claim 3, characterized in that: The extending speed of the rotary telescopic motor (21) is less than the contracting speed. The centrifugal force generated by the contraction of the rotary telescopic motor (21) is greater than the magnetic force of the flexible magnetic plate (23).

5. The deep treatment device for fly ash washing filtrate with targeted purification function according to claim 3, characterized in that: The separation unit (3) includes a drive coil (31), a second filter plate (32), a fixed block (33), a telescopic spring (34), a slider (35), and an annular groove (36). The drive coil (31) is fixedly installed on the outer surface of the inner cylinder (11). The drive coil (31) is electrically connected to the electric telescopic ring plate (27). The second filter plate (32) is slidably installed on the inner wall of the inner cylinder (11). One end of the fixed block (33) is fixedly connected to the lower surface of the second filter plate (32), and the other end is fixedly connected to one end of the telescopic spring (34). The other end of the telescopic spring (34) is fixedly connected to the slider (35). The slider (35) is slidably installed in the annular groove (36). The annular groove (36) is fixedly installed on the inner wall of the inner cylinder (11). A circular groove is provided on the second filter plate (32), and an electromagnet is placed in the circular groove. The drive coil (31) is electrically connected to the dosing unit (4).

6. The deep treatment device for fly ash washing filtrate with a targeted purification function according to claim 5, characterized in that: The separation unit (3) further includes a return spring (37), a fixed plate (38), a conductive plate (39), an electric push plate (310), a column (311) and a stirring plate (312). One end of the return spring (37) is fixedly connected to the slider (35), and the other end is fixedly connected to the fixed plate (38). The fixed plate (38) is fixedly installed in the annular groove (36). The fixed plate (38) is fixedly connected to the conductive plate (39) through a connecting rod. The fixed end of the electric push plate (310) is fixedly installed at the end of the column (311) away from the horizontal workbench. A conductive sheet is provided at one end of the fixed end of the electric push plate (310) close to the conductive plate (39). The column (311) is internally connected to the inner cylinder (11) near the horizontal workbench end through a torsion spring. The stirring plate (312) is fixedly installed on the column (311).

7. The deep treatment device for fly ash washing filtrate with targeted purification function according to claim 6, characterized in that: The conductive sheet on the electric push plate (310) is electrically connected to the conductive plate (39). The telescopic end of the electric push plate (310) is arranged at the end away from the horizontal workbench.

8. The deep treatment device for fly ash washing filtrate with targeted purification function according to claim 5, characterized in that: The medicine adding unit (4) includes a medicine adding tank (41), a sliding plate (42), a screw (43), a circular ring frame (44) and a first electric push rod (45). The medicine adding tank (41) is fixedly installed on the inner surface of the inner cylinder (11) near the horizontal workbench end. The sliding plate (42) is slidably installed inside the medicine adding tank (41). The sliding plate (42) is provided with an internal thread matching the screw (43). The screw (43) is fixedly installed on the inner surface of the inner cylinder (11) near the horizontal workbench end. The circular ring frame (44) is fixedly connected to the sliding plate (42). The fixed end of the first electric push rod (45) is fixedly installed on the outer surface of the circular ring frame (44). The first electric push rod (45) is electrically connected to the drive coil (31).

9. The deep treatment device for fly ash washing filtrate with targeted purification function according to claim 8, characterized in that: The medicine adding unit (4) further includes a second electric push rod (46), an upper elastic telescopic frame (47), a lower elastic telescopic frame (48) and a medicine outlet (49). The fixed end of the second electric push rod (46) is fixedly installed on the outer surface of the circular ring frame (44). The second electric push rod (46) is electrically connected to the drive coil (31). One end of the upper elastic telescopic frame (47) is fixedly connected to the sliding plate (42) through an elastic film, and the other end is rotatably connected to the upper part of the medicine adding tank (41). One end of the lower elastic telescopic frame (48) is fixedly connected to the sliding plate (42) through an elastic film, and the other end is rotatably connected to the lower part of the medicine adding tank (41). A medicine outlet (49) is provided at the end of the medicine adding tank (41) away from the horizontal workbench. A one-way valve is arranged in the medicine outlet (49). The medicine adding tank (41) contains medicine.

10. The deep treatment device for fly ash washing filtrate with a targeted purification function according to claim 9, characterized in that: The first electric push rod (45) and the second electric push rod (46) are alternately arranged on the outer surface of the circular ring frame (44).

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