A coking wastewater treatment device based on magnetic adsorption

Abstract

The present invention discloses a coking wastewater treatment device based on magnetic adsorption in the field of wastewater treatment technology, comprising a treatment box, wherein an upper end of the treatment box is fixedly connected to a water inlet pipe, the lower end of the water inlet pipe extends into the inner side of the treatment box, and a plurality of magnetic treatment mechanisms are provided on the inner side of the treatment box, which adsorb magnetic substances in the coking wastewater through the rotation of the magnetic treatment mechanism, and the lower side of the magnetic treatment mechanism is in contact with a collecting bucket, and the collecting bucket is fixedly connected to the treatment box; the magnetic substances in the coking wastewater are adsorbed and treated by the plurality of magnetic treatment mechanisms arranged in an upper and lower manner, and the magnetic substances adsorbed on the surface of the magnetic treatment mechanism are scraped off by a scraper and fall into the collecting bucket, and the oil cleaning mechanism cleans the surface of the magnetic treatment mechanism after being scraped by the scraper, so as to prevent particulate impurities such as oil in the coking wastewater from being wrapped around the surface of the cylindrical connecting box, so that the magnetic substances in the wastewater cannot be completely adsorbed and treated.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and in particular to a coking wastewater treatment device based on magnetic adsorption. Background Art

[0002] For example, Chinese patent publication number CN112441692A discloses a rotary magnetic wastewater filter. It includes a water inlet pipe and a filtration and purification mechanism connected to the bottom of the water inlet pipe. A baffle is provided on the outer wall of the bottom of the water inlet pipe. The filtration and purification mechanism includes at least a magnetic device, which includes a magnetic box, a baffle hingedly provided at the top opening of the magnetic box, a fixed frame provided within the magnetic box, a magnetic drum provided within the fixed frame, a drum motor connected to the end of the magnetic drum, the drum motor fixedly provided on the inner wall of the fixed frame, and the magnetic drum rotatably provided within the fixed frame.

[0003] However, the above scheme has the following shortcomings: in the above patent, the magnetic material entering the wastewater is adsorbed by the rotation of the magnetic drum, so that the magnetic material in the wastewater is adsorbed on the outer wall of the magnetic drum. When the magnetic drum rotates, the scraper scrapes off the magnetic material adsorbed on the outer wall of the magnetic drum, and the magnetic material falls on the top of the scraper. Although this method can treat the magnetic material in the wastewater, for coking wastewater, since coal is generated into coke, coal gas and liquid coal tar through high-temperature dry distillation, in this process, a part of the water is discharged together with coal gas, coal tar and other substances to form wastewater. Therefore, for coking wastewater, which contains a large amount of solid waste pollutants, when the wastewater falls on the surface of the magnetic drum, particulate impurities such as oil in the coking wastewater may be wrapped on the surface of the magnetic drum, which makes it impossible for the magnetic material in the wastewater to be completely adsorbed on the surface of the magnetic drum, resulting in incomplete treatment of the magnetic material in the wastewater and reducing the treatment effect of the wastewater. For this reason, we have introduced a coking wastewater treatment device based on magnetic adsorption. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a coking wastewater treatment device based on magnetic adsorption to solve the problems raised in the above background technology.

[0005] The object of the present invention is achieved as follows: a coking wastewater treatment device based on magnetic adsorption, comprising a treatment box, an upper end of the treatment box is fixedly connected to a water inlet pipe, the lower end of the water inlet pipe extends into the inner side of the treatment box, a plurality of magnetic treatment mechanisms are provided inside the treatment box, and the magnetic substances in the coking wastewater are adsorbed by the rotation of the magnetic treatment mechanism, the lower side of the magnetic treatment mechanism is in contact with a collection bucket, the collection bucket is fixedly connected to the treatment box, one end of the collection bucket is fixedly connected to a discharge pipe, a scraper is fixedly connected to the collection bucket, one end of the scraper is in contact with the magnetic treatment mechanism, and the magnetic substances adsorbed on the surface of the magnetic treatment mechanism are scraped off by the scraper and fall into the collection bucket;

[0006] The back surfaces of several magnetic treatment mechanisms are respectively in contact with the oil cleaning mechanism. The oil cleaning mechanism is installed in the treatment box. A wastewater filtering mechanism is provided on the lower side of the treatment box. The coking wastewater is filtered and discharged through the wastewater filtering mechanism. The oil cleaning mechanism is connected to the wastewater filtering mechanism through a hose. The wastewater generated after cleaning by the oil cleaning mechanism is guided to the wastewater filtering mechanism through the hose for filtration.

[0007] Preferably, the magnetic processing mechanism includes a cylindrical connecting box, which is movably connected to the inner side of the processing box, and one end of the cylindrical connecting box is fixedly connected to the output end of the transmission motor, and the transmission motor is fixedly installed in the processing box.

[0008] Preferably, a plurality of grooves are provided on the outside of the cylindrical connecting box, and a push plate is slidably connected in the groove. The push plate is arranged in an arc shape away from the end of the cylindrical connecting box, and the push plate is fixedly connected to the end of the cylindrical connecting box close to two first T-shaped rods. The first T-shaped rod is movably connected to the cylindrical connecting box, and the first T-shaped rod is arranged in an arc shape away from the end of the push plate and extends into the cylindrical connecting box. A first spring is sleeved on the outside of the first T-shaped rod, and one end of the first spring is fixedly connected to the cylindrical connecting box, and the other end is fixedly connected to the first T-shaped rod.

[0009] Preferably, a connecting ring is provided on the inner side of the cylindrical connecting box, one end of the connecting ring is fixedly connected to the inner side of the processing box, and an extrusion block is fixedly connected to the outer side of the connecting ring. When the arc-shaped end of the first T-shaped rod contacts the extrusion block, the first T-shaped rod will drive the push plate to move outward, and a number of cylindrical magnetic blocks are provided between the cylindrical connecting box and the connecting ring. The cylindrical magnetic blocks are movably connected to the U-shaped plate, and the outer side of the cylindrical magnetic blocks contacts the inner side of the cylindrical connecting box. Two second T-shaped rods are fixedly connected to the side of the U-shaped plate close to the connecting ring, and the second T-shaped rods are movably connected to the connecting ring. A second spring is sleeved on the outer side of the second T-shaped rod, and one end of the second spring is fixedly connected to the U-shaped plate, and the other end is fixedly connected to the connecting ring.

[0010] Preferably, the oil cleaning mechanism includes a mounting block, which is mounted in the treatment box by screws, and a connecting cavity is provided in the mounting block close to the side of the cylindrical connecting box, a cleaning roller is movably connected in the connecting cavity, one end of the cleaning roller is fixedly connected to the output end of the connecting motor, and the connecting motor is fixedly mounted in the mounting block, a water guide hole is provided in the mounting block, the upper end of the water guide hole passes through the mounting block, and the lower end extends into the connecting cavity, the upper side of the water guide hole corresponds to the guide pipe, and the guide pipe is fixedly connected to the treatment box, a connecting pipe is fixedly connected to the lower side of the mounting block, one end of the connecting pipe extends into the external environment and is connected to the hose, and the other end extends into the connecting cavity, and a rubber pad is fixedly connected to the side of the mounting block close to the cylindrical connecting box.

[0011] Preferably, an elliptical groove is provided in the end of the cleaning roller away from the connection motor, a sliding cavity is provided in the mounting block, a special-shaped rod is slid into the sliding cavity, one end of the special-shaped rod is slid into the elliptical groove, and the other end is fixedly connected to the T-shaped piston rod, the T-shaped piston rod is slid into the cavity, the cavity is provided in the mounting block, the upper and lower ends of the cavity are fixedly connected to the one-way valve, the upper end of the one-way valve on the upper side is connected to the liquid storage cavity, cleaning liquid is provided in the liquid storage cavity, the lower end of the one-way valve on the lower side is fixedly connected to the spray cross pipe, and the spray cross pipe is fixedly connected to the upper end of the connecting cavity.

[0012] Preferably, the wastewater filtering mechanism includes an installation cavity, in which a coarse filter plate, a coarse stone filter plate, a fine stone filter plate and an activated carbon filter plate are movably installed in sequence from top to bottom. A movable door is provided on one side of the installation cavity, and the movable door is movably connected to the outside of the treatment box. A drain pipe is fixedly connected to one end of the treatment box, and one end of the drain pipe extends into the installation cavity, and the other end extends into the external environment.

[0013] Compared with the prior art, the beneficial effects of the present invention are: the magnetic substances in the coking wastewater are adsorbed and treated by a plurality of magnetic treatment mechanisms arranged in an upper and lower manner, the magnetic substances adsorbed on the surface of the magnetic treatment mechanism are scraped off by a scraper and fall into a collecting bucket, the oil cleaning mechanism cleans the surface of the magnetic treatment mechanism after scraping by the scraper, and the wastewater generated after cleaning is connected to the coking wastewater after magnetic adsorption and enters the wastewater filtering mechanism for treatment, thereby preventing the oil and other particulate impurities in the coking wastewater from being wrapped on the surface of the cylindrical connecting box, so that the magnetic substances in the wastewater cannot be completely adsorbed and treated. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0015] Figure 1 It is a schematic diagram of the cross-sectional structure of the present invention.

[0016] Figure 2 It is a schematic cross-sectional view of the magnetic processing mechanism of the present invention.

[0017] Figure 3 It is a schematic cross-sectional view of the oil cleaning mechanism of the present invention.

[0018] Figure 4 It is a three-dimensional structural diagram of the connection relationship between the cylindrical connecting box and the connecting ring of the present invention.

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the connection relationship between the groove and the push plate of the present invention.

[0020] Figure 6 It is a schematic diagram of the three-dimensional structure of the connecting ring and the extrusion block of the present invention.

[0021] Figure 7 It is a three-dimensional structural diagram of the connection relationship between the cylindrical magnetic block and the U-shaped plate of the present invention.

[0022] Figure 8 It is a schematic diagram of the three-dimensional structure of the rubber pad position of the present invention.

[0023] Figure 9 This is a three-dimensional structural diagram of the positional relationship between the cleaning roller and the mounting block of the present invention.

[0024] Figure 10 It is a schematic diagram of the main structure of the present invention.

[0025] In the figure: 1, treatment box; 2, discharge pipe; 3, guide pipe; 4, mounting block; 5, cylindrical connecting box; 6, collecting hopper; 7, coarse stone filter plate; 8, activated carbon filter plate; 9, drainage pipe; 10, mounting cavity; 11, fine stone filter plate; 12, coarse filter plate; 13, hose; 14, connecting ring; 15, liquid storage cavity; 16, extrusion block; 17, first T-bar; 18, cylindrical magnetic block; 19, groove; 20, push plate; 21, first Spring; 22. U-shaped plate; 23. Second T-shaped rod; 24. Second spring; 25. Rubber pad; 26. Spray cross pipe; 27. Transmission motor; 28. Cleaning roller; 29. ​​Connecting motor; 30. Connecting chamber; 31. Elliptical slide; 32. Cavity; 33. One-way valve; 34. Water guide hole; 35. Sliding chamber; 36. T-shaped piston rod; 37. Special-shaped rod; 38. Connecting pipe; 39. Movable door; 40. Water inlet pipe; 41. Scraper. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] As shown in Figures 1-10, the present invention provides a technical solution:

[0028] Example 1:

[0029] The bottom of the collecting hopper 6 is provided with a scraper 41, and the scraper 41 is provided with a scraper 41. The scraper 41 contacts the magnetic treatment mechanism, and the magnetic material adsorbed on the surface of the magnetic treatment mechanism is scraped off by the scraper 41 and falls into the collecting hopper 6. The bottom of the inner side of the collecting hopper 6 is inclined. When the oily liquid and magnetic material scraped off by the scraper 41 enter the collecting hopper 6, the oily liquid and magnetic material will be discharged into the discharge pipe 2 along the inner bottom of the collecting hopper 6.

[0030] The back surfaces of several magnetic treatment mechanisms are respectively in contact with the oil cleaning mechanism, and the oil cleaning mechanism cooperates with the cleaning liquid to clean the oil attached to the surface of the magnetic treatment mechanism to prevent the oil from being included on the surface of the magnetic treatment mechanism, which causes the magnetic treatment mechanism to be unable to adsorb the magnetic substance in the coking wastewater. The oil cleaning mechanism is installed in the treatment box 1, and a wastewater filtering mechanism is provided on the lower side of the treatment box 1. The coking wastewater is filtered and discharged by the wastewater filtering mechanism. The oil cleaning mechanism is connected to the wastewater filtering mechanism through a hose 13, and the wastewater generated after cleaning by the oil cleaning mechanism is guided to the wastewater filtering mechanism through the hose 13 for filtration.

[0031] Example 2:

[0032] On the basis of Example 1, in order to prevent the magnetic material adsorbed on the surface of the magnetic treatment mechanism from being washed away by the coking wastewater, the magnetic treatment mechanism includes a cylindrical connecting box 5, which is made of metal material. The cylindrical connecting box 5 is movably connected to the inner side of the treatment box 1, and one end of the cylindrical connecting box 5 is fixedly connected to the output end of the transmission motor 27. The transmission motor 27 is fixedly installed in the treatment box 1. By starting the transmission motor 27, the cylindrical connecting box 5 can be driven to rotate. A plurality of grooves 19 are provided on the outside of the cylindrical connecting box 5, and a push plate 20 is slidably connected in the groove 19. When the coking wastewater falls into the surface of the cylindrical connecting box 5, the wastewater will contact the plurality of grooves 19. Under the magnetic force of the cylindrical magnetic block 18, the magnetic material in the coking wastewater will be adsorbed in the groove 19. The push plate 20 is arranged in an arc shape away from one end of the cylindrical connecting box 5, and the curvature of the arc setting is equal to the curvature of the outer side of the cylindrical connecting box 5.

[0033] The push plate 20 is fixedly connected to one end of the cylindrical connecting box 5 with two first T-shaped rods 17, and the first T-shaped rod 17 is movably connected to the cylindrical connecting box 5. The first T-shaped rod 17 is arranged in an arc shape away from one end of the push plate 20 and extends into the cylindrical connecting box 5. A first spring 21 is sleeved on the outside of the first T-shaped rod 17. One end of the first spring 21 is fixedly connected to the cylindrical connecting box 5, and the other end is fixedly connected to the first T-shaped rod 17. As the cylindrical connecting box 5 rotates, when the arc end of the first T-shaped rod 17 moves to the position of the extrusion block 16, the first T-shaped rod 17 will move outward and drive the push plate 20 to move synchronously, and the first spring 21 will be compressed. When the first T-shaped rod 17 is no longer in contact with the extrusion block 16, the push plate 20 will be re-retracted into the groove 19 under the elastic force of the first spring 21;

[0034] A connecting ring 14 is provided on the inner side of the cylindrical connecting box 5, one end of the connecting ring 14 is fixedly connected to the inner side of the processing box 1, and an extrusion block 16 is fixedly connected to the outer side of the connecting ring 14. When the arc end of the first T-shaped rod 17 contacts the extrusion block 16, the first T-shaped rod 17 will drive the push plate 20 to move outward. A plurality of cylindrical magnetic blocks 18 are provided between the cylindrical connecting box 5 and the connecting ring 14. The cylindrical magnetic block 18 is movably connected to the U-shaped plate 22, and the outer side of the cylindrical magnetic block 18 contacts the inner side of the cylindrical connecting box 5. The U-shaped plate 22 is fixedly connected to one side near the connecting ring 14. The second T-shaped rod 23 is movably connected to the connecting ring 14. A second spring 24 is sleeved on the outer side of the second T-shaped rod 23. One end of the second spring 24 is fixedly connected to the U-shaped plate 22, and the other end is fixedly connected to the connecting ring 14. Under the elastic force of the second spring 24, the cylindrical magnetic block 18 will always be in contact with the inner side of the cylindrical connecting box 5;

[0035] The oil cleaning mechanism includes a mounting block 4, which is mounted in the treatment box 1 by screws. When it is necessary to repair the cleaning roller 28 or add cleaning liquid to the liquid storage chamber 15, the mounting block 4 can be taken out by unscrewing the screws and performing the corresponding operations. A connecting cavity 30 is provided in the mounting block 4 near the side of the cylindrical connecting box 5. The cleaning roller 28 is movably connected in the connecting cavity 30. One end of the cleaning roller 28 is fixedly connected to the output end of the connecting motor 29. The connecting motor 29 is fixedly mounted on the mounting block 4. In the block 4, the connecting motor 29 is turned on to drive the cleaning roller 28 to rotate. A water guide hole 34 is opened in the mounting block 4. The upper end of the water guide hole 34 passes through the mounting block 4, and the lower end extends into the connecting cavity 30. The upper side of the water guide hole 34 corresponds to the guide pipe 3. The guide pipe 3 is fixedly connected to the processing box 1. The external clean water source enters the guide pipe 3, and then enters the water guide hole 34 through the guide pipe 3, and finally falls between the cylindrical connecting box 5 and the cleaning roller 28, flushing the cleaned oil into the connecting pipe 38;

[0036] A connecting pipe 38 is fixedly connected to the lower side of the mounting block 4. One end of the connecting pipe 38 extends into the external environment and is connected to the hose 13. The hose is sleeved on the outside of the connecting pipe 38 and the other end extends into the connecting cavity 30. A rubber pad 25 is fixedly connected to the side of the mounting block 4 close to the cylindrical connecting box 5. The rubber pad 25 fits tightly with the cylindrical connecting box 5, so that the waste water generated by the cleaning roller 28 after cleaning flows into the connecting pipe 38. The cleaning roller 28 is open at one end away from the connecting motor 29. An elliptical chute 31 is provided, and a sliding cavity 35 is provided in the mounting block 4. A special-shaped rod 37 is slidably connected to the sliding cavity 35. One end of the special-shaped rod 37 is slidably connected to the elliptical chute 31, and the other end is fixedly connected to the T-shaped piston rod 36. The T-shaped piston rod 36 is slidably connected to the cavity 32. The cavity 32 is provided in the mounting block 4. During the rotation of the cleaning roller 28, the elliptical chute 31 drives the special-shaped rod 37 to move back and forth left and right. The movement of the special-shaped rod 37 drives the T-shaped piston rod 36 to move;

[0037] The upper and lower ends of the cavity 32 are fixedly connected to the one-way valve 33. The upper end of the upper one-way valve 33 is connected to the liquid storage chamber 15. The liquid storage chamber 15 is provided with a cleaning liquid. The upper one-way valve 33 can only allow the cleaning liquid in the liquid storage chamber 15 to enter the cavity 32, but will not allow the substances in the cavity 32 to enter the liquid storage chamber 15. The lower end of the lower one-way valve 33 is fixedly connected to the spray cross pipe 26. The lower one-way valve 33 will allow the cleaning liquid in the cavity 32 to enter the spray cross pipe 26, but will not allow the substances in the spray cross pipe 26 to enter the cavity 32.

[0038] The spray cross pipe 26 is fixedly connected to the upper end of the connecting chamber 30. The length of the spray cross pipe 26 is equal to the length of the cleaning roller 28. A plurality of spray ports are opened at the lower end of the spray cross pipe 26. The cleaning liquid entering the spray cross pipe 26 will fall onto the surface of the cleaning roller 28 through the plurality of spray ports. The wastewater filtering mechanism includes an installation chamber 10. A coarse filter plate 12, a coarse stone filter plate 7, a fine stone filter plate 11 and an activated carbon filter plate 8 are movably installed in the installation chamber 10 from top to bottom. The coarse filter plate 12 filters and blocks large substances in the wastewater, and the coarse stone filter plate 7 filters and blocks large substances in the wastewater. The plate 7, fine stone filter plate 11 and activated carbon filter plate 8 purify the microorganisms and particles in the wastewater. A movable door 39 is provided on one side of the installation cavity 10. The movable door 39 is movably connected to the outside of the treatment box 1. By opening the movable door 39, the coarse filter plate 12, coarse stone filter plate 7, fine stone filter plate 11 and activated carbon filter plate 8 in the installation cavity 10 can be replaced. A drain pipe 9 is fixedly connected to one end of the treatment box 1. One end of the drain pipe 9 extends into the installation cavity 10, and the other end extends into the external environment. The purified water is discharged through the drain pipe 9.

[0039] Working principle: when in use, turn on the transmission motor 27 to drive the upper cylindrical connecting box 5 to rotate clockwise, and the lower cylindrical connecting box 5 to rotate counterclockwise, and guide the coking wastewater to the inside of the treatment box 1 through the water inlet pipe 40. The coking wastewater will first contact the upper cylindrical connecting box 5 and then contact the lower cylindrical connecting box 5. During the rotation of the cylindrical connecting box 5, several cylindrical magnetic blocks 18 will always be in contact with the cylindrical connecting box 5, so that the two cylindrical connecting boxes 5 are connected. The opposing surfaces generate magnetic force, while the opposing back surfaces of the two cylindrical connecting boxes 5 do not generate magnetic force. The magnetic material in the coking wastewater is adsorbed on the surface of the cylindrical connecting box 5 and in the groove 19. When the position of the cylindrical connecting box 5 adsorbed with the magnetic material moves to the upper side of the collecting hopper 6, since this position is not in contact with the cylindrical magnetic block 18, the magnetic force becomes weaker as the cylindrical connecting box 5 rotates, and some of the magnetic material adsorbed on the surface of the cylindrical connecting box 5 will fall into the collecting hopper 6.

[0040] At the same time, when the first T-bar 23 moves to the position of the extrusion block 16, as the cylindrical connecting box 5 rotates, the first T-bar 23 will be squeezed outward, and the movement of the first T-bar 23 drives the push plate 20 to move. The push plate 20 moves along the groove 19 to push out the oil and magnetic substances in the groove 19. Under the action of the scraper 41, the oil and magnetic substances on the surface of the cylindrical connecting box 5 are scraped off and fall into the collecting bucket 6. At this time, the connecting motor 29 is turned on to drive the cleaning roller 28 to rotate. During the rotation of the cleaning roller 28, the elliptical chute 31 drives the special-shaped rod 37 to move back and forth left and right. The movement of the special-shaped rod 37 drives the T-shaped piston rod 36 to move. When the T-shaped piston rod 36 moves to the left, the cleaning liquid in the liquid storage chamber 15 enters the cavity 32 through the upper one-way valve 33. When the special-shaped rod 37 moves to the right, the T-shaped piston rod 36 pushes the cleaning liquid in the cavity 32 into the lower one-way valve 33, and then sprays it onto the surface of the cleaning roller 28 through the spray cross pipe 26.

[0041] During the rotation of the cleaning roller 28, the surface of the cylindrical connecting box 5 is cleaned. At this time, with the cooperation of the cleaning liquid, the oil and dirt attached to the cylindrical connecting box 5 are cleaned off. The external clean water source enters the guide pipe 3, then enters the water guide hole 34 through the guide pipe 3, and finally falls between the cylindrical connecting box 5 and the cleaning roller 28, flushing the cleaned oil and dirt into the connecting pipe 38. The sewage in the connecting box 38 is returned to the installation cavity 10 through the hose 13 for treatment.

[0042] The coking wastewater after magnetic adsorption and the wastewater generated after cleaning by the cleaning roller 28 will enter the installation cavity 10, and the coarse filter plate 12, coarse stone filter plate 7, fine stone filter plate 11 and activated carbon filter plate 8 in the installation cavity 10 will treat the wastewater and then be discharged through the drain pipe 9.

[0043] The above embodiments are only intended to help understand the method and core concept of the present invention. It should be noted that, without departing from the principles of the present invention, a number of improvements and modifications may be made to the present invention by those skilled in the art, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A coking wastewater treatment device based on magnetic adsorption, comprising a treatment box, characterized in that: A water inlet pipe is fixedly connected to the upper end of the treatment box, and the lower end of the water inlet pipe extends into the inside of the treatment box. A plurality of magnetic treatment mechanisms are provided inside the treatment box, and the magnetic substances in the coking wastewater are adsorbed by the rotation of the magnetic treatment mechanisms. The lower side of the magnetic treatment mechanism is in contact with the collection bucket, and the collection bucket is fixedly connected to the treatment box. A discharge pipe is fixedly connected to one end of the collection bucket, and a scraper is fixedly connected to the collection bucket. One end of the scraper is in contact with the magnetic treatment mechanism, and the magnetic substances adsorbed on the surface of the magnetic treatment mechanism are scraped off by the scraper and fall into the collection bucket; The back surfaces of several magnetic treatment mechanisms are respectively in contact with oil cleaning mechanisms, and the oil cleaning mechanisms are installed in a treatment box. A wastewater filtering mechanism is provided on the lower side of the treatment box. The coking wastewater is filtered and discharged through the wastewater filtering mechanism. The oil cleaning mechanism is connected to the wastewater filtering mechanism through a hose, and the wastewater generated after cleaning by the oil cleaning mechanism is guided to the wastewater filtering mechanism through the hose for filtering. The magnetic processing mechanism includes a cylindrical connecting box, which is movably connected to the inner side of the processing box. One end of the cylindrical connecting box is fixedly connected to the output end of the transmission motor, and the transmission motor is fixedly installed in the processing box. The cylindrical connecting box is provided with a plurality of grooves on the outside, and a push plate is slidably connected in the grooves. The push plate is arranged in an arc shape at one end away from the cylindrical connecting box, and the push plate is fixedly connected to two first T-shaped rods at one end close to the cylindrical connecting box. The first T-shaped rod is movably connected to the cylindrical connecting box, and the first T-shaped rod is arranged in an arc shape at one end away from the push plate and extends into the cylindrical connecting box. A first spring is sleeved on the outside of the first T-shaped rod, and one end of the first spring is fixedly connected to the cylindrical connecting box, and the other end is fixedly connected to the first T-shaped rod.

2. A coking wastewater treatment device based on magnetic adsorption according to claim 1, characterized in that: A connecting ring is provided on the inner side of the cylindrical connecting box, one end of the connecting ring is fixedly connected to the inner side of the processing box, and an extrusion block is fixedly connected to the outer side of the connecting ring. When the arc-shaped end of the first T-shaped rod contacts the extrusion block, the first T-shaped rod will drive the push plate to move outward. A number of cylindrical magnetic blocks are provided between the cylindrical connecting box and the connecting ring. The cylindrical magnetic blocks are movably connected to the U-shaped plate, and the outer side of the cylindrical magnetic blocks contacts the inner side of the cylindrical connecting box. Two second T-shaped rods are fixedly connected to the side of the U-shaped plate close to the connecting ring. The second T-shaped rods are movably connected to the connecting ring, and a second spring is sleeved on the outer side of the second T-shaped rod. One end of the second spring is fixedly connected to the U-shaped plate, and the other end is fixedly connected to the connecting ring.

3. The coking wastewater treatment device based on magnetic adsorption according to claim 1, characterized in that: The oil cleaning mechanism includes a mounting block, which is mounted in the processing box by screws. A connecting cavity is provided in the mounting block close to the side of the cylindrical connecting box, a cleaning roller is movably connected in the connecting cavity, one end of the cleaning roller is fixedly connected to the output end of the connecting motor, and the connecting motor is fixedly mounted in the mounting block. A water guide hole is provided in the mounting block, the upper end of the water guide hole passes through the mounting block, and the lower end extends into the connecting cavity. The upper side of the water guide hole corresponds to the guide pipe, and the guide pipe is fixedly connected to the processing box. A connecting pipe is fixedly connected to the lower side of the mounting block, one end of the connecting pipe extends into the external environment and is connected to the hose, and the other end extends into the connecting cavity. A rubber pad is fixedly connected to the side of the mounting block close to the cylindrical connecting box.

4. The coking wastewater treatment device based on magnetic adsorption according to claim 3 is characterized in that: An elliptical slide groove is provided in the end of the cleaning roller away from the connection motor, and a sliding cavity is provided in the mounting block. A special-shaped rod is slid into the sliding cavity. One end of the special-shaped rod is slid into the elliptical slide groove, and the other end is fixedly connected to the T-shaped piston rod. The T-shaped piston rod is slid into the cavity, and the cavity is provided in the mounting block. The upper and lower ends of the cavity are fixedly connected to the one-way valve, the upper end of the one-way valve on the upper side is connected to the liquid storage cavity, and cleaning liquid is provided in the liquid storage cavity, and the lower end of the one-way valve on the lower side is fixedly connected to the spray cross pipe, and the spray cross pipe is fixedly connected to the upper end of the connecting cavity.

5. The coking wastewater treatment device based on magnetic adsorption according to claim 1, characterized in that: The wastewater filtration mechanism includes an installation cavity, in which a coarse filter plate, a coarse stone filter plate, a fine stone filter plate and an activated carbon filter plate are movably installed in sequence from top to bottom. A movable door is provided on one side of the installation cavity, and the movable door is movably connected to the outside of the treatment box. A drain pipe is fixedly connected to one end of the treatment box, and one end of the drain pipe extends into the installation cavity, and the other end extends into the external environment.

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