Coking wastewater treatment device based on magnetic adsorption

Abstract

The invention discloses a coking wastewater treatment device based on magnetic adsorption in the technical field of wastewater treatment, the coking wastewater treatment device comprises a treatment box, a water inlet pipe is fixedly connected in the upper end of the treatment box, the lower end of the water inlet pipe extends into the inner side of the treatment box, and a plurality of magnetic adsorption treatment mechanisms are arranged on the inner side of the treatment box. Magnetic substances in the coking wastewater are adsorbed through rotation of the magnetic attraction treatment mechanism, the lower side of the magnetic attraction treatment mechanism is in contact with the collecting hopper, and the collecting hopper is fixedly connected into the treatment box; magnetic substances in coking wastewater are subjected to adsorption treatment through a plurality of magnetic adsorption treatment mechanisms which are arranged up and down, the magnetic substances adsorbed on the surfaces of the magnetic adsorption treatment mechanisms are scraped off through a scraper and fall into a collecting hopper, and an oil stain cleaning mechanism cleans the surfaces of the magnetic adsorption treatment mechanisms scraped off by the scraper. And the situation that granular impurities such as oil stains in the coking wastewater are wrapped on the surface of the cylindrical connecting box, so that magnetic substances in the wastewater cannot be completely adsorbed and treated is prevented.

Description

Technical Field

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

[0002] For example, a Chinese patent with the publication number CN112441692A discloses a rotary magnetic adsorption wastewater filtration device. It includes a water inlet pipe and a filtration and purification mechanism communicated with the bottom of the water inlet pipe. A shielding plate is arranged on the outer wall of the bottom of the water inlet pipe. The filtration and purification mechanism at least includes: a magnetic adsorption device. The magnetic adsorption device includes a magnetic adsorption box. The shielding plate is hinged at the top opening of the magnetic adsorption box. A fixing frame is arranged inside the magnetic adsorption box. A magnetic rotating cylinder is arranged inside the fixing frame. The end of the magnetic rotating cylinder is connected with a roller motor. The roller motor is fixedly arranged on the inner wall of the fixing frame. The magnetic rotating cylinder is rotatably arranged inside the fixing frame.

[0003] However, the above solution has the following deficiencies: In the above patent, through the rotation of the magnetic rotating cylinder, magnetic substances entering the wastewater are adsorbed, so that the magnetic substances in the wastewater are adsorbed on the outer wall of the magnetic rotating cylinder. When the magnetic rotating cylinder rotates, the magnetic substances adsorbed on the outer wall of the magnetic rotating cylinder are scraped off by the scraping blade, and the magnetic substances fall on the top of the scraping blade. Although this method can treat the magnetic substances in the wastewater, for coking wastewater, since coal is subjected to high-temperature dry distillation to produce coke, gas and liquid coal tar, in this process, a part of the water is discharged together with substances such as gas and coal tar to form wastewater. Therefore, for coking wastewater containing a large amount of solid waste pollutants, when the wastewater falls onto the surface of the magnetic rotating cylinder, oily and other particulate impurities in the coking wastewater may wrap the surface of the magnetization rotating cylinder, which makes the magnetic substances in the wastewater unable to be completely adsorbed on the surface of the magnetic rotating cylinder, resulting in incomplete treatment of the magnetic substances in the wastewater and reducing the treatment effect of the wastewater. Therefore, we introduce a coking wastewater treatment device based on magnetic adsorption. Summary of the Invention

[0004] Aiming at the deficiencies existing 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 art.

[0005] The object of the present invention is achieved as follows: A coking wastewater treatment device based on magnetic adsorption includes a treatment tank. An inlet pipe is fixedly connected inside the upper end of the treatment tank. The lower end of the inlet pipe extends into the inner side of the treatment tank. A number of magnetic adsorption treatment mechanisms are arranged inside the treatment tank. The magnetic substances in the coking wastewater are adsorbed by the rotation of the magnetic adsorption treatment mechanisms. The lower side of the magnetic adsorption treatment mechanism is in contact with a collection hopper. The collection hopper is fixedly connected inside the treatment tank. One end of the collection hopper is fixedly connected with a discharge pipe. A scraper is fixedly connected inside the collection hopper. One end of the scraper is in contact with the magnetic adsorption treatment mechanism. The magnetic substances adsorbed on the surface of the magnetic adsorption treatment mechanism are scraped off by the scraper and fall into the collection hopper. The backs of a number of the magnetic adsorption treatment mechanisms are respectively in contact with an oil stain cleaning mechanism. The oil stain cleaning mechanism is installed inside the treatment tank. A wastewater filtering mechanism is arranged inside the lower side of the treatment tank. The coking wastewater is filtered and discharged through the wastewater filtering mechanism. The oil stain cleaning mechanism is connected with the wastewater filtering mechanism through a hose. The wastewater generated after the oil stain cleaning mechanism is cleaned is guided into the wastewater filtering mechanism through the hose for filtering treatment.

[0006] Preferably, the magnetic adsorption treatment mechanism includes a cylindrical connection box. The cylindrical connection box is movably connected inside the treatment tank. One end of the cylindrical connection box is fixedly connected with the output end of a transmission motor. The transmission motor is fixedly installed inside the treatment tank.

[0007] Preferably, a number of grooves are formed on the outer side of the cylindrical connection box. A push plate is slidably connected inside the grooves. One end of the push plate away from the cylindrical connection box is arc-shaped. Two first T-shaped rods are fixedly connected to the end of the push plate close to the cylindrical connection box. The first T-shaped rods are movably connected inside the cylindrical connection box. The ends of the first T-shaped rods away from the push plate are arc-shaped and extend into the cylindrical connection box. A first spring is sleeved on the outer side of the first T-shaped rods. One end of the first spring is fixedly connected with the cylindrical connection box, and the other end is fixedly connected with the first T-shaped rods.

[0008] Preferably, a connection ring is arranged inside the cylindrical connection box. One end of the connection ring is fixedly connected to the inner side of the treatment tank. An extrusion block is fixedly connected to the outer side of the connection 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 outwards. A number of cylindrical magnets are arranged between the cylindrical connection box and the connection ring. The cylindrical magnets are movably connected inside a U-shaped plate. The outer sides of the cylindrical magnets are in contact with the inner side of the cylindrical connection box. Two second T-shaped rods are fixedly connected to the side of the U-shaped plate close to the connection ring. The second T-shaped rods are movably connected inside the connection ring. A second spring is sleeved on the outer side of the second T-shaped rods. One end of the second spring is fixedly connected with the U-shaped plate, and the other end is fixedly connected with the connection ring.

[0009] Preferably, the oil stain cleaning mechanism includes a mounting block which is installed in the processing tank by screws. A connection cavity is formed inside the mounting block close to one side of the cylindrical connection box. A cleaning roller is movably connected in the connection cavity. One end of the cleaning roller is fixedly connected to the output end of a connection motor. The connection motor is fixedly installed in the mounting block. A water guide hole is formed in the mounting block. The upper end of the water guide hole penetrates through the mounting block, and the lower end extends into the connection cavity. The upper side of the water guide hole corresponds to a guiding pipe which is fixedly connected in the processing tank. A connection pipe is fixedly connected inside the lower side of the mounting block. One end of the connection pipe extends into the external environment and is connected to a hose, and the other end extends into the connection cavity. A rubber pad is fixedly connected to one side of the mounting block close to the cylindrical connection box.

[0010] Preferably, an oval chute is formed inside one end of the cleaning roller away from the connection motor. A sliding connection cavity is formed in the mounting block. A special-shaped rod is slidably connected in the sliding connection cavity. One end of the special-shaped rod is slidably connected in the oval chute, and the other end is fixedly connected to a T-shaped piston rod. The T-shaped piston rod is slidably connected in a cavity which is formed in the mounting block. One-way valves are fixedly connected to both the upper and lower ends of the cavity. The upper end of the upper one-way valve is connected to a liquid storage cavity which is provided with cleaning liquid. The lower end of the lower one-way valve is fixedly connected to a spray cross pipe which is fixedly connected to the upper end of the connection cavity.

[0011] Preferably, the wastewater filtering mechanism includes a mounting cavity. A coarse filtering plate, a coarse stone filtering plate, a fine stone filtering plate and an activated carbon filtering plate are sequentially and movably installed in the mounting cavity from top to bottom. A movable door is arranged on one side of the mounting cavity. The movable door is movably connected to the outside of the processing tank. A drain pipe is fixedly connected inside one end of the processing tank. One end of the drain pipe extends into the mounting cavity, and the other end extends into the external environment.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: The magnetic substances in the coking wastewater are adsorbed and processed by a plurality of magnetic adsorption processing mechanisms arranged vertically. The magnetic substances adsorbed on the surface of the magnetic adsorption processing mechanisms are scraped off by a scraper and fall into the collection hopper. The oil stain cleaning mechanism cleans the surface of the magnetic adsorption processing mechanisms after being scraped by the scraper. The wastewater generated after cleaning and the coking wastewater after magnetic adsorption enter the wastewater filtering mechanism for treatment together, preventing the situation that the oil stains and other particulate impurities in the coking wastewater are wrapped on the surface of the cylindrical connection box, resulting in the incomplete adsorption and treatment of the magnetic substances in the wastewater. Description of the Drawings

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0014] Figure 1 It is a schematic cross-sectional structure diagram of the present invention.

[0015] Figure 2 It is a schematic cross-sectional structure diagram of the magnetic attraction processing mechanism of the present invention.

[0016] Figure 3 It is a schematic cross-sectional structure diagram of the oil stain cleaning mechanism of the present invention.

[0017] Figure 4 It is a schematic three-dimensional structure diagram of the connection relationship between the cylindrical connection box and the connection ring of the present invention.

[0018] Figure 5 It is a schematic three-dimensional structure diagram of the connection relationship between the groove and the push plate of the present invention.

[0019] Figure 6 It is a schematic three-dimensional structure diagram of the connection ring and the extrusion block of the present invention.

[0020] Figure 7 It is a schematic three-dimensional structure diagram of the connection relationship between the cylindrical magnet and the U-shaped plate of the present invention.

[0021] Figure 8 It is a schematic three-dimensional structure diagram of the position of the rubber pad of the present invention.

[0022] Figure 9 It is a schematic three-dimensional structure diagram of the position relationship between the cleaning roller and the mounting block of the present invention.

[0023] Figure 10 It is a schematic front view structure diagram of the present invention.

[0024] In the figure: 1, treatment tank; 2, discharge pipe; 3, guiding pipe; 4, mounting block; 5, cylindrical connection box; 6, collection hopper; 7, coarse stone filter plate; 8, activated carbon filter plate; 9, drain 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-shaped rod; 18, cylindrical magnet; 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, drive motor; 28, cleaning roller; 29, connecting motor; 30, connecting cavity; 31, elliptical chute; 32, cavity; 33, one-way valve; 34, water guiding hole; 35, sliding connection cavity; 36, T-shaped piston rod; 37, special-shaped rod; 38, connecting pipe; 39, movable door; 40, water inlet pipe; 41, scraper. Specific implementation mode

[0025] 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] As shown in Figures 1-10, the present invention provides a technical solution: Embodiment 1: A coking wastewater treatment device based on magnetic adsorption includes a treatment tank 1. An inlet pipe 40 is fixedly connected to the upper end inside the treatment tank 1. The lower end of the inlet pipe 40 extends into the inner side of the treatment tank 1. The coking wastewater is guided into the treatment tank 1 through the inlet pipe 40. Several magnetic adsorption treatment mechanisms are arranged inside the treatment tank 1. The magnetic substances in the coking wastewater are adsorbed by the rotation of the magnetic adsorption treatment mechanisms. The lower side of the magnetic adsorption treatment mechanisms is in contact with a collection hopper 6. The collection hopper 6 is fixedly connected to the treatment tank 1. One end of the collection hopper 6 is fixedly connected to a discharge pipe 2. A scraper 41 is fixedly connected to the collection hopper 6. One end of the scraper 41 is in contact with the magnetic adsorption treatment mechanism. The magnetic substances adsorbed on the surface of the magnetic adsorption treatment mechanism are scraped off by the scraper 41 and fall into the collection hopper 6. The inner bottom of the collection hopper 6 is inclined. When the oil-contaminated liquid and magnetic substances scraped off by the scraper 41 enter the collection hopper 6, the oil and magnetic substances will be discharged into the discharge pipe 2 along the inner bottom of the collection hopper 6; A plurality of magnetic treatment mechanisms are respectively in contact with the oil pollution cleaning mechanism on the back surface. Through the cooperation of the oil pollution cleaning mechanism and the cleaning liquid, the oil pollution attached to the surface of the magnetic treatment mechanism is cleaned, preventing the oil pollution from being included on the surface of the magnetic treatment mechanism, resulting in the inability of the magnetic treatment mechanism to adsorb the magnetic substances in the coking wastewater. The oil pollution cleaning mechanism is installed in the treatment tank 1. A wastewater filtering mechanism is provided inside the lower side of the treatment tank 1. The coking wastewater is filtered and discharged through the wastewater filtering mechanism. The oil pollution cleaning mechanism is connected to the wastewater filtering mechanism through a hose 13. The wastewater generated after the oil pollution cleaning mechanism is cleaned is guided into the wastewater filtering mechanism through the hose 13 for filtering treatment.

[0027] Embodiment 2: On the basis of Embodiment 1, in order to prevent the magnetic substances adsorbed on the surface of the magnetic treatment mechanism from being washed down by the coking wastewater again, the magnetic treatment mechanism includes a cylindrical connection box 5. The cylindrical connection box 5 is made of metal material. The cylindrical connection box 5 is movably connected to the inner side of the treatment tank 1. One end of the cylindrical connection box 5 is fixedly connected to the output end of the driving motor 27. The driving motor 27 is fixedly installed in the treatment tank 1. By starting the driving motor 27, the cylindrical connection box 5 can be driven to rotate. A plurality of grooves 19 are formed on the outer side of the cylindrical connection box 5. A push plate 20 is slidably connected in the grooves 19. When the coking wastewater falls onto the surface of the cylindrical connection box 5, the wastewater will come into contact with the plurality of grooves 19. Under the magnetic force of the cylindrical magnet 18, the magnetic substances in the coking wastewater will be adsorbed in the grooves 19. One end of the push plate 20 away from the cylindrical connection box 5 is arc-shaped, and the arc degree of the arc-shaped setting is equal to the arc degree on the outer side of the cylindrical connection box 5; Two first T-shaped rods 17 are fixedly connected to one end of the push plate 20 close to the cylindrical connection box 5. The first T-shaped rods 17 are movably connected to the inside of the cylindrical connection box 5. One end of the first T-shaped rods 17 away from the push plate 20 is arc-shaped and extends into the cylindrical connection box 5. A first spring 21 is sleeved on the outer side of the first T-shaped rods 17. One end of the first spring 21 is fixedly connected to the cylindrical connection box 5, and the other end is fixedly connected to the first T-shaped rods 17. As the cylindrical connection box 5 rotates, when the arc-shaped end of the first T-shaped rods 17 moves to the position of the extrusion block 16, at this time, the first T-shaped rods 17 will move outwards and drive the push plate 20 to move synchronously. The first spring 21 is compressed. When the first T-shaped rods 17 no longer contact the extrusion block 16, under the elastic force of the first spring 21, the push plate 20 will be retracted into the grooves 19 again; Inside the cylindrical connection box 5, there is a connection ring 14. One end of the connection ring 14 is fixedly connected to the inside of the processing box 1. An extrusion block 16 is fixedly connected to the outside of the connection 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. There are several cylindrical magnets 18 between the cylindrical connection box 5 and the connection ring 14. The cylindrical magnets 18 are movably connected in the U-shaped plate 22. The outside of the cylindrical magnet 18 contacts the inside of the cylindrical connection box 5. Two second T-shaped rods 23 are fixedly connected to the side of the U-shaped plate 22 close to the connection ring 14. The second T-shaped rods 23 are movably connected in the connection ring 14. A second spring 24 is sleeved on the outside of the second T-shaped rods 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 connection ring 14. Under the elastic force of the second spring 24, the cylindrical magnet 18 will always contact the inside of the cylindrical connection box 5; The oil stain cleaning mechanism includes a mounting block 4. The mounting block 4 is installed in the processing box 1 by screws. When it is necessary to repair the cleaning roller 28 or add cleaning liquid to the liquid storage cavity 15, at this time, the mounting block 4 can be taken out by unscrewing the screws and corresponding operations can be carried out. A connection cavity 30 is opened inside the mounting block 4 on the side close to the cylindrical connection box 5. A cleaning roller 28 is movably connected in the connection cavity 30. One end of the cleaning roller 28 is fixedly connected to the output end of the connection motor 29. The connection motor 29 is fixedly installed in the mounting block 4. Turning on the connection motor 29 drives the cleaning roller 28 to rotate. A water guiding hole 34 is opened in the mounting block 4. The upper end of the water guiding hole 34 penetrates the mounting block 4, and the lower end extends into the connection cavity 30. The upper side of the water guiding hole 34 corresponds to the guiding pipe 3. The guiding pipe 3 is fixedly connected to the inside of the processing box 1. The external cleaning water source enters the guiding pipe 3, then enters the water guiding hole 34 from the guiding pipe 3, and finally falls between the cylindrical connection box 5 and the cleaning roller 28, flushing the cleaned oil stains into the connection pipe 38; A connection pipe 38 is fixedly connected to the lower side inside the mounting block 4. One end of the connection pipe 38 extends into the external environment and is connected to the hose 13. The hose is sleeved on the outside of the connection pipe 38, and the other end extends into the connection cavity 30. A rubber pad 25 is fixedly connected to the side of the mounting block 4 close to the cylindrical connection box 5. Through the close fit of the rubber pad 25 with the cylindrical connection box 5, the wastewater generated after the cleaning roller 28 is cleaned flows into the connection pipe 38. An oval chute 31 is opened at one end of the cleaning roller 28 far from the connection motor 29. A sliding connection cavity 35 is opened in the mounting block 4. An irregular rod 37 is slidably connected in the sliding connection cavity 35. One end of the irregular rod 37 is slidably connected in the oval 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 in the cavity 32. The cavity 32 is opened in the mounting block 4. During the rotation of the cleaning roller 28, the oval chute 31 will drive the irregular rod 37 to move back and forth left and right, and the movement of this irregular rod 37 drives the T-shaped piston rod 36 to move; Both 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 cavity 15. A cleaning liquid is provided in the liquid storage cavity 15. The upper one-way valve 33 only allows the cleaning liquid in the liquid storage cavity 15 to enter the cavity 32, and does not allow the substances in the cavity 32 to enter the liquid storage cavity 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 allows the cleaning liquid in the cavity 32 to enter the spray cross pipe 26, and does not allow the substances in the spray cross pipe 26 to enter the cavity 32; The spray cross pipe 26 is fixedly connected to the upper end of the connection cavity 30. The length of the spray cross pipe 26 is equal to the length of the cleaning roller 28. A plurality of spray nozzles are provided 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 nozzles. The waste water filtering mechanism includes an installation cavity 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 sequentially and movably installed in the installation cavity 10 from top to bottom. The coarse filter plate 12 filters and blocks large substances in the waste water. The coarse stone filter plate 7, the fine stone filter plate 11 and the activated carbon filter plate 8 purify the microorganisms and particles in the waste water. 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 tank 1. By opening the movable door 39, the coarse filter plate 12, the coarse stone filter plate 7, the fine stone filter plate 11 and the activated carbon filter plate 8 in the installation cavity 10 can be replaced. A drain pipe 9 is fixedly connected to one end inside the treatment tank 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 source is discharged through the drain pipe 9.

[0028] Working principle: When in use, turn on the drive motor 27 to drive the upper cylindrical connection box 5 to rotate clockwise and the lower cylindrical connection box 5 to rotate counterclockwise. Guide the coking waste water to the inside of the treatment tank 1 through the water inlet pipe 40. The coking waste water will first come into contact with the upper cylindrical connection box 5 and then with the lower cylindrical connection box 5. During the rotation of the cylindrical connection box 5, a plurality of cylindrical magnets 18 will always be in contact with the cylindrical connection box 5, causing magnetic force to be generated on the opposite surfaces of the two cylindrical connection boxes 5, while no magnetic force is generated on the opposite surfaces of the two cylindrical connection boxes 5. The magnetic substances in the coking waste water are adsorbed on the surface of the cylindrical connection box 5 and in the groove 19. When the position of the cylindrical connection box 5 with adsorbed magnetic substances moves above the collection hopper 6, since this position is not in contact with the cylindrical magnet 18, at this time, as the cylindrical connection box 5 rotates, the magnetic force becomes weaker, and some of the magnetic substances adsorbed on the surface of the cylindrical connection box 5 will fall into the collection hopper 6; Meanwhile, when the first T-shaped rod 23 moves to the position of the extrusion block 16, as the cylindrical connection box 5 rotates, the first T-shaped rod 23 will be extruded and move outward. The movement of the first T-shaped rod 23 drives the push plate 20 to move. The push plate 20 moves along the groove 19 to push out the oil stains and magnetic substances in the groove 19. Under the action of the scraping plate 41, the oil stains and magnetic substances on the surface of the cylindrical connection box 5 are scraped off and fall into the collection hopper 6. At this time, the connection 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 will drive the special-shaped rod 37 to move left and right. The movement of this 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 cavity 15 will enter the cavity 32 through the upper one-way valve 33. When the special-shaped rod 37 moves to the right, at this time, the T-shaped piston rod 36 will push the cleaning liquid in the cavity 32 into the lower one-way valve 33, and then spray it onto the surface of the cleaning roller 28 through the spray cross pipe 26; During the rotation of the cleaning roller 28, the surface of the cylindrical connection box 5 is cleaned. At this time, with the cooperation of the cleaning liquid, the oil stains attached to the cylindrical connection box 5 are cleaned off. The external cleaning water source enters the guiding pipe 3, then enters the water guiding holes 34 from the guiding pipe 3, and finally falls between the cylindrical connection box 5 and the cleaning roller 28, flushing the cleaned oil stains into the connecting pipe 38. The sewage entering the connecting box 38 will return to the installation cavity 10 through the hose 13 for treatment; The coking wastewater after magnetic adsorption and the wastewater generated after the cleaning of the cleaning roller 28 will enter the installation cavity 10. The coarse filter plate 12, the coarse stone filter plate 7, the fine stone filter plate 11 and the activated carbon filter plate 8 in the installation cavity 10 treat the wastewater and discharge it through the drain pipe 9.

[0029] The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope 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 inner side of the treatment box. A plurality of magnetic treatment mechanisms are arranged 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 the collecting bucket, and the collecting bucket is fixedly connected to the treatment box. A discharge pipe is fixedly connected to one end of the collecting bucket, and a scraper is fixedly connected to the collecting bucket, and 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 collecting bucket; The back sides 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, and the coking wastewater is filtered and treated and discharged by 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 treatment.

2. A coking wastewater treatment device based on magnetic adsorption according to claim 1, characterized in that: The magnetic processing mechanism comprises a cylindrical connection box, which is movably connected to the inner side of the processing box, one end of which is fixedly connected to the output end of the transmission motor, and the transmission motor is fixedly installed in the processing box.

3. A coking wastewater treatment device based on magnetic adsorption according to claim 2, characterized in that: A plurality of grooves are provided on the outer side of the cylindrical connecting box, and a push plate is slidably connected in the groove. The push plate is arranged in an arc shape at one end away from the cylindrical connecting box, and two first T-shaped rods are fixedly connected to one end of the push plate 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 outer side 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.

4. A coking wastewater treatment device based on magnetic adsorption according to claim 3, 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 plurality 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 sides of the cylindrical magnetic blocks contact the inner sides of the cylindrical connecting box. Two second T-shaped rods are fixedly connected to one 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.

5. A coking wastewater treatment device based on magnetic adsorption according to claim 2, 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, the connecting motor is fixedly installed 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, 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, and a rubber pad is fixedly connected to the side of the mounting block close to the cylindrical connecting box.

6. A coking wastewater treatment device based on magnetic adsorption according to claim 5, characterized in that: An elliptical 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 slidably connected in the sliding cavity. One end of the special-shaped rod is slidably connected in the elliptical groove, and the other end is fixedly connected to a T-shaped piston rod. The T-shaped piston rod is slidably connected in the cavity. The cavity is provided in the mounting block. The upper and lower ends of the cavity are fixedly connected to a one-way valve. The upper end of the one-way valve on the upper side is connected to a 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 a spray cross pipe, and the spray cross pipe is fixedly connected to the upper end of the connecting cavity.

7. A coking wastewater treatment device based on magnetic adsorption according to claim 1, characterized in that: 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.

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