A method and device for treating coking wastewater

Abstract

The present invention discloses a method and device for treating coking wastewater, including a treatment tank, a stirring component, a layering component and an extrusion filtration component. The present invention cooperates with the stirring component, the extrusion filtration component and the layering component, and after the sedimentation is completed, the blocking plate moves down to block the leakage port, and at this time, the lower sediment will not enter the funnel-shaped groove; at the same time, when the lifting sleeve moves down, it drives the stirring frame to move down, and then drives the shell to move down, and then the shell enters the vertical notch and is sealed and plugged with the vertical notch, so as to achieve the purpose of stratified discharge of sediment and upper water body, and when pumping water, the sediment below will not enter the upper water body. The present invention relates to the field of wastewater treatment technology, and specifically provides a method and device for treating coking wastewater.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, and in particular to a method and device for treating coking wastewater. Background Art

[0002] Coking wastewater is a typical toxic and difficult to degrade organic wastewater, which mainly comes from the primary cooling of coke oven gas and the production water and steam condensation wastewater in the coking production process.

[0003] At present, the purification treatment of coking wastewater mostly involves passing the coking wastewater into a sedimentation tank, then adding a flocculant into the sedimentation tank and using stirring means to allow the flocculant to flocculate and settle the impurities in the wastewater. After the coking wastewater flocculates and settles, an upper layer of water and a lower layer of sediment are formed inside the sedimentation tank. Finally, the upper layer of water is pumped out and the lower layer of sediment is released, so that the water body and the sediment are separated, thereby achieving the purification of the coking wastewater.

[0004] However, in the process of pumping out the upper water body, the position of the extraction pipe mouth may be too close to the sedimentation layer, which may disturb the sediment at the bottom. The lower sediment is easily re-mixed into the upper water body, resulting in more debris in the extracted upper water body, which in turn affects the purification effect of coking wastewater.

[0005] Therefore, we proposed a method and device for treating coking wastewater. Summary of the invention

[0006] In view of the above situation, in order to overcome the defects in the prior art, the present invention provides a method and device for treating coking wastewater.

[0007] The technical solution adopted by the present invention is as follows: The present invention is a coking wastewater treatment device, comprising a treatment tank, a stirring component, a layering component and an extrusion filtering component, the stirring component is arranged in the treatment tank, the layering component is arranged at the lower part of the treatment tank and is connected to the stirring component, the extrusion filtering component is arranged on the stirring component and is connected to the layering component, an inlet and an outlet are opened on the inner wall of one side of the treatment tank, a feeding port is opened on the inner wall of the other side of the treatment tank, and a sewage outlet is opened at the bottom of the treatment tank.

[0008] Furthermore, the stirring assembly includes a motor, an electric telescopic rod, a rotating shaft and a stirring frame. The motor is fixedly arranged on the top of the processing tank, the bottom end of the rotating shaft is rotatably arranged on the bottom wall inside the processing tank through a bearing, the top end of the rotating shaft rotates and penetrates the top wall of the processing tank and is connected to the output end of the motor, the electric telescopic rod is fixedly arranged on the top of the processing tank and is located on the left and right sides of the motor, the output end of the electric telescopic rod penetrates the top of the processing tank, a lifting sleeve is slidably sleeved on the rotating shaft through the sliding cooperation of a limit block and a limit slide groove, a disc is fixedly arranged on the top of the lifting sleeve, and a fixed disc is fixedly arranged on the output end of the electric telescopic rod, the fixed disc is rotatably engaged and sleeved on the outside of the disc, the stirring frame is fixedly arranged on the outer side wall of the lifting sleeve, and the extrusion filtering assembly is fixedly arranged at the bottom of the stirring frame.

[0009] Furthermore, the stirring frame includes a horizontal rod and a vertical rod, one end of the horizontal rod is fixed on the outer wall of the lifting sleeve, the vertical rod is fixed on the other end of the horizontal rod, and the extrusion filtering assembly is fixed on the bottom end of the vertical rod and connected to the layered assembly.

[0010] Furthermore, the extrusion filter assembly includes a shell, a filter screen and a partition. The shell has an opening at the bottom, the filter screen is fixed in the opening, the partition is fixed in the shell and close to the filter screen, the extrusion filter assembly also includes a water inlet pipe, the water inlet pipe is passed through the partition from top to bottom, a one-way valve is connected in series at one end of the water inlet pipe located above the partition, a drainage hole 1 is provided on the circumferential inner wall of the shell, the drainage hole 1 is located on the upper side of the partition, the shell also has a drainage hole 2 on the top, and a sealing sleeve is fixedly sleeved on the bottom of the shell, and the sealing sleeve is located below the drainage hole 1.

[0011] Furthermore, the layered component includes an auxiliary lifting unit, an extrusion disk and a sealing disk. The auxiliary lifting unit is arranged at the top of the processing tank. The circumferential outer wall of the extrusion disk is in sealing contact with the inner wall of the processing tank and is connected to the auxiliary lifting unit. A funnel-shaped groove is opened in the middle of the extrusion disk, and a leakage port is opened at the bottom of the funnel-shaped groove. The rotating shaft and the lifting sleeve are coaxial with the extrusion disk, and the rotating shaft and the lifting sleeve both pass through the leakage port. The sealing disk is fixedly arranged on the outside of the lifting sleeve. The sealing disk blocks the leakage port when it moves downward. A vertical slot is also opened on the inner wall of the funnel-shaped groove. The vertical slot is located around the leakage port. The shell extends into the vertical slot through a sliding seal of a fixed sealing sleeve on its bottom.

[0012] Furthermore, the sealing disk includes a sealing body and a fitting body, the sealing body is cylindrical, the fitting body is in an inverted cone, the sealing body is fixedly arranged at the bottom of the fitting body and is coaxial, the sealing body and the fitting body are both provided with a center hole at the center thereof which is fixedly matched with the lifting sleeve, the sealing body slides to seal the leakage port, the fitting body is sealingly fitted with the inner wall of the funnel-shaped groove near the leakage port, and the top of the fitting body is arc-shaped.

[0013] Furthermore, the auxiliary lifting unit includes a lifting ring, a rotating ring, a fixed rod, a sliding rod and a spring. The sliding rod slides through the top wall of the processing tank. A limit block is fixedly provided on the top of the sliding rod. The lifting ring is fixedly provided on the bottom end of the sliding rod. The fixed plate passes through the lifting ring. The rotating ring is rotatably engaged and sleeved on the outside of the lifting ring. The spring is slidably sleeved on the sliding rod and abuts between the limit block and the top of the processing tank. The top end of the fixed rod is fixedly provided on the bottom of the lifting ring, and the bottom end of the fixed rod is fixedly provided on the inner wall of the funnel-shaped groove.

[0014] Furthermore, a bottom stirring rod is fixedly provided on the rotating shaft, the bottom stirring rod is located below the extrusion disk, and the lifting sleeve is located above the bottom stirring rod.

[0015] Furthermore, a scraping assembly is also provided on the bottom side of the interior of the treatment tank, the scraping assembly is located on one side of the bottom stirring rod and contacts the bottom of the extrusion plate, the scraping assembly includes an elastic telescopic rod and a scraper, the bottom end of the elastic telescopic rod is fixed on the bottom wall of the interior of the treatment tank and is located on one side of the bottom stirring rod, the scraper is fixed on the top end of the elastic telescopic rod, the scraper contacts the bottom of the extrusion plate, one end of the scraper contacts the inner wall of the treatment tank, and the other end of the scraper contacts the side wall of the sealing body.

[0016] A treatment method for a coking wastewater treatment device comprises the following steps:

[0017] S1. First, the coking wastewater to be treated is transported to the treatment tank through the inlet and outlet. At this time, the sealing plate is located above the leakage port and does not block the leakage port. At this time, the wastewater enters the bottom of the treatment tank through the leakage port. After a certain amount of wastewater is added, the wastewater is stopped. After the reagent for accelerating precipitation is added to the sedimentation treatment tank through the feeding port, the motor is started to drive the rotating shaft to rotate. Because the rotating shaft and the lifting sleeve are slidably matched through the limit block and the limit slide groove, the lifting sleeve will only slide relative to the rotating shaft and will not rotate relative to it. Then, the rotating shaft drives the lifting sleeve to rotate, and then drives the stirring frame and the bottom stirring rod to rotate, accelerating the mixing of the reagent and the wastewater and improving the precipitation quality. When the reagent and the wastewater are mixed and contacted, the motor is turned off, and the sediment is settled and left for a period of time. After the wastewater flocculation and sedimentation, an upper water body and a lower sediment can be formed inside the treatment tank, and the lower sediment is located below the extrusion plate;

[0018] S2. After the sedimentation is completed, the electric telescopic rod is started to drive the fixed plate to move downward, and then the circular plate is driven downward, and then the lifting sleeve is driven downward, and then the blocking plate is driven downward. The blocking plate blocks the leakage port. At this time, the lower sediment will not enter the funnel-shaped groove, and the electric telescopic rod is closed; at the same time, the lifting sleeve moves downward, driving the stirring frame to move downward, and then driving the shell to move downward, and then the shell enters the vertical groove and is sealed and plugged with the vertical groove; then the pumping pipe is sent into the funnel-shaped groove through the inlet and outlet to pump out the water in the funnel-shaped groove, and the electric telescopic rod is started again. The telescopic rod is moved to drive the lifting sleeve to move downward, thereby driving the blocking plate to move downward, thereby driving the extrusion plate to move downward, the extrusion plate drives the fixed rod to move downward, thereby driving the rotating ring to move downward, thereby driving the lifting ring to move downward, thereby driving the sliding rod to move downward, the spring is compressed by the limit plate, and the extrusion plate squeezes the sediment below it, so that the water in the sediment is squeezed out and flows upward through the vertical notch, and after being filtered by the filter screen, it enters the housing through the water inlet pipe, which can reduce the water content in the sediment. The one-way valve is set to prevent the squeezed water from flowing back;

[0019] S3. When the water in the funnel-shaped trough is completely pumped out by the water pumping pipe, the water pumping pipe is removed from the inlet and outlet, and then the sewage outlet is opened to discharge the sediment. At the same time, the motor is started again to drive the stirring frame to rotate, and the shell rotates synchronously with the stirring frame, and the extrusion plate rotates synchronously with the shell. At this time, the bottom of the extrusion plate is in close contact with the scraper, and the elastic telescopic rod is compressed. When the extrusion plate rotates, the scraper scrapes off the sediment adhering to the bottom of the extrusion plate. At the same time, the stirring rod can also stir and break up the sediment to facilitate the discharge of the sediment.

[0020] S4. After the sediment is discharged, turn off the motor, start the electric telescopic rod to retract, drive the lifting sleeve to move up, drive the sealing plate to move out of the leakage port, and at the same time, the lifting sleeve drives the stirring frame to move up, and then drives the shell to move out of the vertical slot. Under the rebound force of the spring, the limit plate is driven to move up, and then the sliding rod is driven to move up, and then the lifting ring is driven to move up, and then the rotating ring is driven up, and then the fixed rod is driven up, and then the extrusion plate is driven up, and the scraper is separated from the bottom of the extrusion plate, and the resetting of the extrusion plate is completed, and preparations are made for the next wastewater treatment.

[0021] The beneficial effects achieved by the present invention using the above structure are as follows:

[0022] 1. The present invention drives the stirring frame and the bottom stirring rod to rotate through the stirring assembly, accelerates the mixing of the reagent and the wastewater, and improves the sedimentation quality. When the reagent and the wastewater are mixed and contacted, the motor is turned off, and the sediment is settled and left to stand for a period of time. After the wastewater flocculates and settles, an upper water body and a lower sediment can be formed inside the treatment tank, and the lower sediment is located below the extrusion disk.

[0023] 2. The present invention cooperates with the stirring component, the extrusion filtering component and the stratification component. After the sedimentation is completed, the sealing plate moves down to seal the leakage port, and the lower sediment will not enter the funnel-shaped groove; at the same time, the lifting sleeve moves down to drive the stirring frame to move down, and then drives the shell to move down, and then the shell enters the vertical groove and is sealed and plugged with the vertical groove; then the pumping pipe is sent into the funnel-shaped groove through the inlet and outlet to pump out the water in the funnel-shaped groove, so as to achieve the purpose of discharging the sediment and the upper water body in layers, and when pumping water, the sediment below will not enter the upper water body.

[0024] 3. The present invention starts the electric telescopic rod to drive the lifting sleeve to move downward, thereby driving the blocking plate to move downward, thereby driving the extrusion plate to move downward, the extrusion plate drives the fixed rod to move downward, thereby driving the rotating ring to move downward, thereby driving the lifting ring to move downward, thereby driving the sliding rod to move downward, the spring is compressed by the limit plate, and the extrusion plate squeezes the sediment thereunder, so that the water in the sediment is squeezed out and flows upward through the vertical slot, and after being filtered by the filter net, it enters the shell through the water inlet pipe, thereby reducing the water content in the sediment.

[0025] 4. The present invention starts the motor to drive the stirring frame to rotate, and the shell rotates synchronously with the stirring frame, and the extrusion plate rotates synchronously with the shell. At this time, the bottom of the extrusion plate is in close contact with the scraper, and the elastic telescopic rod is compressed. When the extrusion plate rotates, the scraper scrapes off the sediment adhered to the bottom of the extrusion plate. At the same time, the stirring rod can also stir and break up the sediment to facilitate the discharge of the sediment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the internal three-dimensional structure of the processing tank of the present invention;

[0029] Figure 3 A schematic diagram of the internal three-dimensional structure of the treatment tank of the present invention from another perspective;

[0030] Figure 4 A schematic diagram of the internal three-dimensional structure of the treatment tank of the present invention from another perspective;

[0031] Figure 5 is a cross-sectional view of the present invention;

[0032] Figure 6 For the present invention Figure 5 A magnified image of point A;

[0033] Figure 7 This is a schematic diagram of the three-dimensional structure of the processing tank of the present invention without the extrusion plate;

[0034] Figure 8 This is a schematic diagram of the three-dimensional structure of the processing tank of the present invention without the extrusion plate from another perspective;

[0035] Fig. 9 It is a schematic diagram of the three-dimensional structure of the extrusion disk of the present invention;

[0036] Fig.10 It is a three-dimensional structural schematic diagram of the extrusion disk of the present invention from another perspective;

[0037] Fig.11 This is a schematic diagram of the connection structure between the stirring frame and the extrusion filtering assembly of the present invention;

[0038] Fig.12 It is a schematic diagram of the connection structure between the sealing disk and the lifting sleeve of the present invention.

[0039] Among them, 1. treatment tank, 2. stirring component, 3. layering component, 4. extrusion filtration component, 5. scraping component, 6. inlet and outlet, 7. feeding port, 8. sewage outlet, 21. motor, 22. electric telescopic rod, 23. rotating shaft, 24. stirring frame, 25. lifting sleeve, 26. disc, 27. fixed disc, 28. bottom stirring rod, 241. horizontal rod, 242. vertical rod, 41. shell, 42. filter screen, 43. partition, 44. water inlet Tube, 45, one-way valve, 46, drain hole one, 47, drain hole two, 48, sealing sleeve, 31, auxiliary lifting unit, 32, extrusion plate, 33, sealing plate, 34, funnel-shaped groove, 35, leakage port, 36, vertical notch, 331, sealing body, 332, fitting body, 311, lifting ring, 312, rotating ring, 313, fixed rod, 314, sliding rod, 315, spring, 316, limit block, 51, elastic telescopic rod, 52, scraper. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] like Figure 1-Figure 12 As shown, a method and device for treating coking wastewater of the present invention comprises a treatment tank 1, a stirring component 2, a layering component 3 and an extrusion filtering component 4, wherein the stirring component 2 is arranged in the treatment tank 1, the layering component 3 is arranged at the lower part of the treatment tank 1 and is connected to the stirring component 2, the extrusion filtering component 4 is arranged on the stirring component 2 and is connected to the layering component 3, an inlet and outlet 6 is provided on the inner wall on one side of the treatment tank 1, a feeding port 7 is provided on the inner wall on the other side of the treatment tank 1, and a sewage outlet 8 is provided at the bottom of the treatment tank 1.

[0043] like Figure 1-Figure 12 As shown, the stirring assembly 2 includes a motor 21, an electric telescopic rod 22, a rotating shaft 23 and a stirring frame 24. The motor 21 is fixedly arranged on the top of the processing tank 1, and the bottom end of the rotating shaft 23 is rotatably arranged on the bottom wall inside the processing tank 1 through a bearing. The top end of the rotating shaft 23 rotates through the top wall of the processing tank 1 and is fixedly connected to the output end of the motor 21. The electric telescopic rod 22 is fixedly arranged on the top of the processing tank 1 and is located on the left and right sides of the motor 21. The output end of the electric telescopic rod 22 penetrates the top of the processing tank 1. A lifting sleeve 25 is slidably sleeved on the rotating shaft 23 through the sliding cooperation of a limit block and a limit slide groove. A disc 26 is fixedly arranged on the top of the lifting sleeve 25, and a fixed disc 27 is fixedly arranged on the output end of the electric telescopic rod 22. The fixed disc 27 is rotatably engaged and sleeved on the outside of the disc 26. The stirring frame 24 is fixedly arranged on the outer side wall of the lifting sleeve 25, and the extrusion filtering assembly 4 is fixedly arranged at the bottom of the stirring frame 24.

[0044] like Figure 1-Figure 12 As shown, the stirring frame 24 includes a horizontal rod 241 and a vertical rod 242. One end of the horizontal rod 241 is fixed on the outer wall of the lifting sleeve 25, and the vertical rod 242 is fixed on the other end of the horizontal rod 241. The extrusion filtering assembly 4 is fixed on the bottom end of the vertical rod 242 and is connected to the layered assembly 3.

[0045] like Figure 1-Figure 12As shown, the extrusion filter assembly 4 includes a shell 41, a filter screen 42 and a partition 43. The shell 41 has an opening at the bottom, the filter screen 42 is fixed in the opening, the partition 43 is fixed in the shell 41 and close to the filter screen 42. The extrusion filter assembly 4 also includes a water inlet pipe 44, which is vertically penetrated on the partition 43, and a one-way valve 45 is connected in series at one end of the water inlet pipe 44 located above the partition 43. A drainage hole 1 46 is provided on the circumferential inner wall of the shell 41, and the drainage hole 1 46 is located on the upper side of the partition 43. A drainage hole 2 47 is also provided on the top of the shell 41. A sealing sleeve 48 is fixedly sleeved on the bottom of the shell 41, and the sealing sleeve 48 is located below the drainage hole 1 46. A one-way valve (not shown in the figure) is installed in both the drainage hole 1 46 and the drainage hole 2 47 to prevent sediment from entering the shell 41.

[0046] like Figure 1-Figure 12 As shown, the layered component 3 includes an auxiliary lifting unit 31, an extrusion disk 32 and a sealing disk 33. The auxiliary lifting unit 31 is arranged on the top of the processing tank 1. The circumferential outer wall of the extrusion disk 32 is in sealing contact with the inner wall of the processing tank 1 and is connected to the auxiliary lifting unit 31. A funnel-shaped groove 34 is opened in the middle of the extrusion disk 32, and a leakage port 35 is opened at the bottom of the funnel-shaped groove 34. The rotating shaft 23 and the lifting sleeve 25 are coaxial with the extrusion disk 32, and the rotating shaft 23 and the lifting sleeve 25 both pass through the leakage port 35. The sealing disk 33 is fixedly arranged on the outside of the lifting sleeve 25, and the leakage port 35 is blocked when the sealing disk 33 moves downward.

[0047] like Figure 1-Figure 12 As shown, the inner wall of the funnel-shaped groove 34 is further provided with a vertical slot 36 , which is located around the liquid leakage port 35 , and the housing 41 extends into the vertical slot 36 in a sliding and sealing manner through a fixed sealing sleeve 48 on the bottom thereof.

[0048] like Figure 1-Figure 12 As shown, the sealing disk 33 includes a sealing body 331 and a fitting body 332. The sealing body 331 is cylindrical, and the fitting body 332 is inverted cone shape. The sealing body 331 is fixedly arranged at the bottom of the fitting body 332 and is coaxial. The sealing body 331 and the fitting body 332 are both provided with a center hole at the center thereof which is fixedly matched with the lifting sleeve 25. The sealing body 331 slides to seal the leakage port 35, and the fitting body 332 is sealingly fitted with the inner wall of the funnel-shaped groove 34 near the leakage port 35, and the top of the fitting body 332 is arc-shaped.

[0049] like Figure 1-Figure 12As shown, the auxiliary lifting unit 31 includes a lifting ring 311, a rotating ring 312, a fixed rod 313, a sliding rod 314 and a spring 315. The sliding rod 314 slides through the top wall of the processing tank 1. A limit plate 316 is fixed to the top of the sliding rod 314. The lifting ring 311 is fixed to the bottom end of the sliding rod 314. The fixed plate 27 passes through the lifting ring 311. The rotating ring 312 is rotatably engaged and sleeved on the outside of the lifting ring 311. The spring 315 is slidably sleeved on the sliding rod 314 and abuts between the limit plate 316 and the top of the processing tank 1. The top of the fixed rod 313 is fixed to the bottom of the lifting ring 311, and the bottom of the fixed rod 313 is fixed to the inner wall of the funnel-shaped groove 34.

[0050] like Figure 1-Figure 12 As shown, a bottom stirring rod 28 is fixedly provided on the rotating shaft 23 , the bottom stirring rod 28 is located below the extrusion disk 32 , and the lifting sleeve 25 is located above the bottom stirring rod 28 .

[0051] like Figure 1-Figure 12 As shown, a scraping assembly 5 is also provided on the bottom side of the processing tank 1. The scraping assembly 5 is located on one side of the bottom stirring rod 28 and contacts the bottom of the extrusion plate 32. The scraping assembly 5 includes an elastic telescopic rod 51 and a scraper 52. The bottom end of the elastic telescopic rod 51 is fixed on the bottom wall of the processing tank 1 and is located on one side of the bottom stirring rod 28. The scraper 52 is fixed on the top of the elastic telescopic rod 51. The scraper 52 contacts the bottom of the extrusion plate 32. One end of the scraper 52 contacts the inner wall of the processing tank 1, and the other end of the scraper 52 contacts the side wall of the sealing body 331.

[0052] A treatment method for a coking wastewater treatment device comprises the following steps:

[0053] S1. First, the coking wastewater to be treated is transported to the treatment tank 1 through the inlet and outlet 6. At this time, the blocking plate 33 is located above the leakage port 35 and does not block the leakage port 35. At this time, the wastewater enters the bottom of the treatment tank 1 through the leakage port 35. After a certain amount of wastewater is added, the wastewater is stopped. After the reagent for accelerating the precipitation is added to the sedimentation treatment tank 1 through the feed port 7, the motor 21 is started to drive the rotating shaft 23 to rotate. Because the rotating shaft 23 and the lifting sleeve 25 are slidably matched by the limit block and the limit slide groove, the rotating shaft 23 and the lifting sleeve 25 are slidably matched by the limit block and the limit slide groove. Therefore, the lifting sleeve 25 will only slide relative to the rotating shaft 23, and will not rotate relative to it, and then the rotating shaft 23 drives the lifting sleeve 25 to rotate, and then drives the stirring frame 24 and the bottom stirring rod 28 to rotate, so as to accelerate the mixing of the reagent and the wastewater and improve the sedimentation quality. When the reagent and the wastewater are mixed and contacted, the motor 21 is turned off, and the sediment is settled and left for a period of time. After the wastewater flocculation and sedimentation, an upper water body and a lower sediment can be formed inside the treatment tank 1, and the lower sediment is located below the extrusion plate 32;

[0054] S2. After the sedimentation is finished, the electric telescopic rod 22 is started to drive the fixed plate 27 to move downward, and then the disc 26 is driven downward, and then the lifting sleeve 25 is driven downward, and then the blocking plate 33 is driven downward, and the blocking plate 33 blocks the leakage port 35. At this time, the lower sediment will not enter the funnel-shaped groove 34, and the electric telescopic rod 22 is closed; at the same time, the lifting sleeve 25 moves downward to drive the stirring frame 24 to move downward, and then the shell 41 moves downward, and then the shell 41 enters the vertical slot 36 and is sealed and plugged with the vertical slot 36; then the water pump is sent into the funnel-shaped groove 34 through the inlet and outlet 6 to pump out the water in the funnel-shaped groove 34, and the electric telescopic rod 22 is started again. The retracting rod 22 drives the lifting sleeve 25 to move downward, and then drives the blocking plate 33 to move downward, and then drives the extrusion plate 32 to move downward, and the extrusion plate 32 drives the fixed rod 313 to move downward, and then drives the rotating ring 312 to move downward, and then drives the lifting ring 311 to move downward, and then drives the sliding rod 314 to move downward, and the spring 315 is compressed by the limit plate 316, and the extrusion plate 32 squeezes the sediment below it, so that the water in the sediment is squeezed out and flows upward through the vertical notch 36, and after being filtered by the filter screen 42, it enters the housing 41 through the water inlet pipe 44, which can reduce the water content in the sediment. The setting of the one-way valve 45 prevents the squeezed water from flowing back;

[0055] S3. After the water in the funnel-shaped groove 34 is completely pumped out by the water pumping pipe, the water pumping pipe is removed from the inlet and outlet 6, and then the sewage outlet 8 is opened to discharge the sediment. At the same time, the motor 21 is started again to drive the stirring frame 24 to rotate, and the shell 41 rotates synchronously with the stirring frame 24, and the extrusion plate 32 rotates synchronously with the shell 41. At this time, the bottom of the extrusion plate 32 is in close contact with the scraper, and the elastic telescopic rod 51 is compressed. When the extrusion plate 32 rotates, the scraper 52 scrapes off the sediment adhered to the bottom of the extrusion plate 32. At the same time, the stirring rod can also stir and break up the sediment to facilitate the discharge of the sediment.

[0056] S4. After the sediment is discharged, the motor 21 is turned off, and the electric telescopic rod 22 is started to contract, so as to drive the lifting sleeve 25 to move upward, drive the blocking plate 33 to move out of the leakage port 35, and at the same time, the lifting sleeve 25 drives the stirring frame 24 to move upward, and then drives the shell 41 to move out of the vertical slot 36. Under the rebound force of the spring 315, the limit plate 316 is driven to move upward, and then the sliding rod 314 is driven upward, and then the lifting ring 311 is driven upward, and then the rotating ring 312 is driven upward, and then the fixed rod 313 is driven upward, and then the extrusion plate 32 is driven upward, and the scraper 52 is separated from the bottom of the extrusion plate, and the extrusion plate 32 is reset to prepare for the next wastewater treatment.

[0057] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0058] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art 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 features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0059] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A coking wastewater treatment device, characterized in that: The invention comprises a treatment tank (1), a stirring assembly (2), a layering assembly (3) and an extrusion filtering assembly (4), wherein the stirring assembly (2) is arranged in the treatment tank (1), the layering assembly (3) is arranged at the lower part of the treatment tank (1) and is connected to the stirring assembly (2), the extrusion filtering assembly (4) is arranged on the stirring assembly (2) and is connected to the layering assembly (3), an inlet and outlet (6) is provided on the inner wall of one side of the treatment tank (1), a feeding port (7) is provided on the inner wall of the other side of the treatment tank (1), and a sewage discharge port (8) is provided at the bottom of the treatment tank (1); The stirring assembly (2) comprises a motor (21), an electric telescopic rod (22), a rotating shaft (23) and a stirring frame (24); the motor (21) is fixedly arranged on the top of the processing tank (1); the bottom end of the rotating shaft (23) is rotatably arranged on the bottom wall of the processing tank (1) through a bearing; the top end of the rotating shaft (23) rotates through the top wall of the processing tank (1) and is connected to the output end of the motor (21); the electric telescopic rod (22) is fixedly arranged on the top of the processing tank (1) and is located on the left and right sides of the motor (21); the output end of the electric telescopic rod (22) is The outlet end passes through the top of the processing tank (1); a lifting sleeve (25) is slidably sleeved on the rotating shaft (23) through a limit block (316) and a limit slide groove; a disc (26) is fixedly provided on the top of the lifting sleeve (25); a fixed disc (27) is fixedly provided on the output end of the electric telescopic rod (22); the fixed disc (27) is rotatably engaged and sleeved on the outside of the disc (26); the stirring frame (24) is fixedly provided on the outer side wall of the lifting sleeve (25); and the extrusion filtering assembly (4) is fixedly provided on the bottom of the stirring frame (24); The stirring frame (24) comprises a horizontal rod (241) and a vertical rod (242); one end of the horizontal rod (241) is fixedly arranged on the outer side wall of the lifting sleeve (25); the vertical rod (242) is fixedly arranged on the other end of the horizontal rod (241); the extrusion and filtering assembly (4) is fixedly arranged on the bottom end of the vertical rod (242) and is connected to the layering assembly (3); The extrusion filter assembly (4) comprises a shell (41), a filter screen (42) and a partition (43); the shell (41) has an opening at the bottom, the filter screen (42) is fixedly arranged in the opening, the partition (43) is fixedly arranged in the shell (41) and is close to the filter screen (42); the extrusion filter assembly (4) also comprises a water inlet pipe (44), the water inlet pipe (44) is arranged to pass through the partition (43) from top to bottom, a one-way valve (45) is connected in series to one end of the water inlet pipe (44) located above the partition (43); a drainage hole (46) is provided on the inner wall of the circumference of the shell (41), the drainage hole (46) is located on the upper side of the partition (43); the shell (41) also has a drainage hole (47) at the top; the shell (41) has a sealing sleeve (48) fixedly sleeved on the bottom of the shell (41), the sealing sleeve (48) is located below the drainage hole (46); The layered assembly (3) comprises an auxiliary lifting unit (31), an extrusion plate (32) and a blocking plate (33); the auxiliary lifting unit (31) is arranged on the top of the processing tank (1); the circumferential outer wall of the extrusion plate (32) is in sealing contact with the inner wall of the processing tank (1) and is connected to the auxiliary lifting unit (31); a funnel-shaped groove (34) is provided in the middle of the extrusion plate (32), and a liquid leakage port (35) is provided at the bottom of the funnel-shaped groove (34); the rotating shaft (23) and the lifting sleeve (25) are connected to the extrusion plate (32) and the sealing plate (33); The pressure plate (32) is coaxial, and the rotating shaft (23) and the lifting sleeve (25) both pass through the liquid leakage port (35). The blocking plate (33) is fixedly arranged outside the lifting sleeve (25). When the blocking plate (33) moves downward, it blocks the liquid leakage port (35). The inner wall of the funnel-shaped groove (34) is also provided with a vertical notch (36). The vertical notch (36) is located around the liquid leakage port (35). The housing (41) extends into the vertical notch (36) through a fixed sealing sleeve (48) on the bottom thereof to slide and seal. The auxiliary lifting unit (31) comprises a lifting ring (311), a rotating ring (312), a fixed rod (313), a sliding rod (314) and a spring (315); the sliding rod (314) slides through the top wall of the processing tank (1); a limit block (316) is fixedly provided at the top end of the sliding rod (314); the lifting ring (311) is fixedly provided at the bottom end of the sliding rod (314); the fixed plate (27) passes through the lifting ring (311); the rotating ring (312) is rotatably engaged and sleeved on the outside of the lifting ring (311); the spring (315) is slidably sleeved on the sliding rod (314) and abuts between the limit block (316) and the top of the processing tank (1); the top end of the fixed rod (313) is fixedly provided at the bottom of the lifting ring (311); and the bottom end of the fixed rod (313) is fixedly provided on the inner wall of the funnel-shaped groove (34).

2. A coking wastewater treatment device according to claim 1, characterized in that: The blocking disk (33) comprises a blocking body (331) and a fitting body (332); the blocking body (331) is cylindrical, and the fitting body (332) is in an inverted cone shape; the blocking body (331) is fixedly arranged at the bottom of the fitting body (332) and is coaxial; a central hole fixedly matched with a lifting sleeve (25) is provided at the center of the blocking body (331) and the fitting body (332); the blocking body (331) slides to block the liquid leakage port (35); the fitting body (332) is sealingly fitted with the inner wall of the funnel-shaped groove (34) close to the liquid leakage port (35); and the top of the fitting body (332) is arc-shaped.

3. A coking wastewater treatment device according to claim 1, characterized in that: A bottom stirring rod (28) is also fixedly provided on the rotating shaft (23), the bottom stirring rod (28) is located below the extrusion plate (32), and the lifting sleeve (25) is located above the bottom stirring rod (28).

4. A coking wastewater treatment device according to claim 3, characterized in that: A scraping assembly (5) is also provided on the bottom side of the processing tank (1). The scraping assembly (5) is located on one side of the bottom stirring rod (28) and is in contact with the bottom of the extrusion plate (32). The scraping assembly (5) comprises an elastic telescopic rod (51) and a scraper (52). The bottom end of the elastic telescopic rod (51) is fixedly arranged on the bottom wall of the processing tank (1) and is located on one side of the bottom stirring rod (28). The scraper (52) is fixedly arranged on the top end of the elastic telescopic rod (51). The scraper (52) is in contact with the bottom of the extrusion plate (32). One end of the scraper (52) is in contact with the inner wall of the processing tank (1), and the other end of the scraper (52) is in contact with the side wall of the blocking body (331).

5. The method for treating coking wastewater according to claim 4, characterized in that: A treatment method for a coking wastewater treatment device comprises the following steps: S1. First, the coking wastewater to be treated is transported to the treatment tank (1) through the inlet and outlet (6). At this time, the plugging plate (33) is located above the leakage port (35) and does not block the leakage port (35). At this time, the wastewater enters the bottom of the treatment tank (1) through the leakage port (35). After a certain amount of wastewater is added, the addition of wastewater is stopped. After a reagent for accelerating precipitation is added to the sedimentation treatment tank (1) through the feed port (7), the motor (21) is started to drive the rotating shaft (23) to rotate. Because the rotating shaft (23) and the lifting sleeve (25) are connected to the limit block (316) and the limit Due to the sliding fit of the slide groove, the lifting sleeve (25) can only slide relative to the rotating shaft (23) and cannot rotate relative to it, so that the rotating shaft (23) drives the lifting sleeve (25) to rotate, and then drives the stirring frame (24) and the bottom stirring rod (28) to rotate, thereby accelerating the mixing of the reagent and the wastewater and improving the sedimentation quality. When the reagent and the wastewater are mixed and contacted, the motor (21) is turned off, and the sediment is allowed to settle and stand for a period of time. After the wastewater flocculates and settles, an upper water body and a lower sediment are formed inside the treatment tank (1), and the lower sediment is located below the extrusion plate (32); S2. After the sedimentation is completed, the electric telescopic rod (22) is started to drive the fixed plate (27) to move downward, thereby driving the circular plate (26) to move downward, thereby driving the lifting sleeve (25) to move downward, thereby driving the blocking plate (33) to move downward, and the blocking plate (33) blocks the leakage port (35). At this time, the sediment in the lower layer will not enter the funnel-shaped groove (34), and the electric telescopic rod (22) is closed; at the same time, when the lifting sleeve (25) moves downward, it drives the stirring frame (24) to move downward, thereby driving the shell (41) to move downward, and then the shell (41) enters the vertical groove (36) and is sealed and plugged with the vertical groove (36); then, the water extraction pipe is sent into the funnel-shaped groove (34) through the inlet and outlet (6), and the water in the funnel-shaped groove (34) is extracted, and the electric telescopic rod (22) is started again. The electric telescopic rod (22) drives the lifting sleeve (25) to move downward, thereby driving the blocking plate (33) to move downward, thereby driving the extrusion plate (32) to move downward, the extrusion plate (32) drives the fixed rod (313) to move downward, thereby driving the rotating ring (312) to move downward, thereby driving the lifting ring (311) to move downward, thereby driving the sliding rod (314) to move downward, the spring (315) is compressed by the limit plate, and the extrusion plate (32) squeezes the sediment below it, so that the water in the sediment is squeezed out and flows upward through the vertical slot (36), and after being filtered by the filter screen (42), it enters the housing (41) through the water inlet pipe (44), thereby reducing the water content in the sediment. The one-way valve (45) is set so that the squeezed water does not flow back. S3. After the water in the funnel-shaped trough (34) is completely pumped out by the water pumping pipe, the water pumping pipe is removed from the inlet and outlet (6), and then the sewage outlet (8) is opened to discharge the sediment. At the same time, the motor (21) is started again to drive the stirring frame (24) to rotate, the housing (41) rotates synchronously with the stirring frame (24), and the extrusion plate (32) rotates synchronously with the housing (41). At this time, the bottom of the extrusion plate (32) is in close contact with the scraper, and the elastic telescopic rod (51) is compressed. When the extrusion plate (32) rotates, the scraper (52) scrapes off the sediment adhering to the bottom of the extrusion plate (32), and at the same time, the stirring rod can also stir and disperse the sediment, so as to facilitate the discharge of the sediment; S4. After the sediment is discharged, the motor (21) is turned off, and the electric telescopic rod (22) is started to contract, thereby driving the lifting sleeve (25) to move upward, driving the blocking plate (33) to move out of the leakage port (35), and at the same time, the lifting sleeve (25) drives the stirring frame (24) to move upward, thereby driving the housing (41) to move out of the vertical slot (36), and under the rebound force of the spring (315), the limit plate is driven to move upward, thereby driving the sliding rod (314) to move upward, thereby driving the lifting ring (311) to move upward, thereby driving the rotating ring (312) to move upward, thereby driving the fixing rod (313) to move upward, thereby driving the extrusion plate (32) to move upward, and the scraper (52) is separated from the bottom of the extrusion plate, completing the reset of the extrusion plate (32), and preparing for the next wastewater treatment.

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