A thermal power plant wastewater treatment device

Abstract

This invention relates to the field of wastewater treatment technology, specifically to a wastewater treatment device for a thermal power plant. The device includes a separation tank, an inner screening structure, a vibrating structure connected to the screening structure, a clearing structure on the top of the screening structure, a cleaning structure on the bottom of the separation tank, a sedimentation structure connected to the side of the separation tank, and an absorption structure inside the sedimentation structure. The screening structure allows for continuous collection of solid impurities while filtering the wastewater. The vibrating structure enhances the collection of solid impurities. The clearing structure allows for rapid unblocking of the filter cartridge, maintaining filtration efficiency. The cleaning structure facilitates cleaning of the separation tank. The sedimentation structure separates oil from the filtered wastewater. The absorption structure separates the oil portion from the wastewater.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a wastewater treatment device for thermal power plants. Background Technology

[0002] A combined heat and power (CHP) plant is a thermal power plant that generates electricity while simultaneously providing heat to users using steam extracted or exhausted from steam turbines. Its main working principle is to utilize the hot water generated after power generation in a thermal power plant, reheating it for heating. Wastewater from CHP plants mainly includes ash flushing water, dust removal water, industrial wastewater, domestic sewage, acid and alkali waste liquids, and condenser cooling water drainage. Direct discharge of these wastewaters can negatively impact the reproduction and growth of aquatic organisms.

[0003] Filtration is an essential step in wastewater treatment. However, existing equipment usually needs to treat the solid residues filtered from wastewater regularly. If the residues accumulate, they will not only affect the filtration effect but may also clog the treatment pipelines. On the other hand, in addition to solid impurities, the wastewater from thermal power plants may also contain some oil. Existing treatment equipment is not very effective at separating oil. Summary of the Invention

[0004] To address the problems in the prior art, the present invention provides a wastewater treatment device for thermal power plants.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a wastewater treatment device for thermal power plants, including a separation tank, a screening structure provided on the inner side of the separation tank, a vibrating structure connected between the screening structure and the separation tank, a dredging structure provided on the top side of the screening structure, a cleaning structure provided on the bottom side of the separation tank, a sedimentation structure connected to the side of the separation tank, and an absorption structure provided on the inner side of the sedimentation structure.

[0006] Specifically, the screening structure includes a collection pipe, which is fixedly connected to the side of the separation tank. A connecting block is fixedly connected to the middle of the collection pipe. An installation side plate is rotatably connected between the connecting block and the inner side of the separation tank. A filter cylinder is fixedly connected to the middle of the installation side plate. A spiral feeding rod is rotatably connected to the inner side of the collection pipe. The end of the spiral feeding rod passes through the installation side plate and is rotatably connected to the side of the separation tank. Multiple lifting plates are fixedly connected in a ring shape to the inner side of the installation side plate. The sides of the lifting plates abut against the inner side of the filter cylinder. A water inlet pipe is fixedly connected to the side of the separation tank. The end of the water inlet pipe passes through the connecting block at the bottom of the collection pipe.

[0007] Specifically, the portion of the collection pipe located inside the filter cartridge has a "V" shape. The side of the mounting side plate has a toothed groove. The inner side of the separation tank is rotatably connected to a drive toothed rod. The two ends of the drive toothed rod are respectively engaged with the two sides of the mounting side plate through the toothed groove. The end of the drive toothed rod is fixedly connected to a second pulley. The end of the spiral feeding rod is fixedly connected to a first pulley. A transmission belt is sleeved between the first pulley and the second pulley.

[0008] Specifically, the oscillation structure includes a torsion spring, both ends of the lifting plate are rotatably connected to the mounting side plate, the end of the lifting plate is fixedly connected to the mounting side plate, one end of the lifting plate is fixedly connected to a deflection block, the side of the mounting side plate is provided with multiple second limiting grooves, and the side of the deflection block is slidably connected to the mounting side plate through the second limiting grooves of the arc-shaped structure.

[0009] Specifically, a contact block is slidably connected to the side of the deflection block away from the mounting side plate, and a third spring is fixedly connected between the contact block and the deflection block. Multiple vibration grooves are opened on the side of the separation tank. The vibration grooves are strip-shaped and arranged in a ring. The end of the contact block is hemispherical, and the spherical end of the contact block abuts against the inner wall of the separation tank through the vibration groove.

[0010] Specifically, the unblocking structure includes a cleaning brush, the top side of the filter cartridge is provided with a cleaning brush, a transmission gear is fixedly connected to each end of the cleaning brush, a lifting block is rotatably connected to each end of the cleaning brush, the lifting block is slidably connected to the inside of the separation tank, and a first spring is fixedly connected between the lifting block and the separation tank.

[0011] Specifically, a control rod is rotatably connected to the top side of the separation tank, and a push rod is vertically fixed to each end of the control rod. The side of the push rod is slidably connected to the top side of the lifting block arranged on the same side. A locking rod is slidably connected to the end of the control rod. A second spring is fixedly connected between the locking rod and the control rod. A slot is opened on the side of the separation tank, and the end of the locking rod is locked with the separation tank through the slot.

[0012] Specifically, the cleaning structure includes a base plate, which is rotatably connected to the bottom side of the separation tank. A sealing ring is fixedly connected to the bottom side of the separation tank. The base plate abuts against the bottom side of the separation tank through the sealing ring. A traction rod is rotatably connected to each side of the base plate. A guide groove is provided on the inner side of the separation tank. The end of the traction rod is slidably connected to the separation tank through the guide groove. A rotating block is rotatably connected to the end of the base plate. A fastening screw is threadedly connected to the middle of the rotating block. A fixing groove is provided on the side of the separation tank. The end of the fastening screw abuts against the separation tank through the fixing groove.

[0013] Specifically, the sedimentation structure includes a sedimentation tank, a sedimentation tank is provided on the side of the separation tank, a water supply pipe is connected between the sedimentation tank and the separation tank, two first partitions are fixedly connected in parallel in the middle of the sedimentation tank, a second partition is provided between the two first partitions, and the bottom side of the second partition is fixedly connected to the bottom side of the sedimentation tank.

[0014] Specifically, a first limiting groove is provided on the inner side of the sedimentation tank, and a sealing plate is slidably connected to the sedimentation tank through the first limiting groove. A first float is fixedly connected to the side of the sealing plate.

[0015] Specifically, the suction structure includes a chute, the sedimentation tank has a chute on its inner side, the sedimentation tank is slidably connected to an installation plate through the chute, a mesh plate is fixedly connected to each side of the installation plate, an adjusting rod is rotatably connected to the middle of the installation plate, a second float is threaded onto the adjusting rod, the two ends of the second float are slidably connected to the two sides of the installation plate, an oil suction pipe is fixedly connected to the installation plate, and the end of the oil suction pipe is located on the top side of the installation plate.

[0016] The beneficial effects of this invention are:

[0017] (1) The wastewater treatment device for thermal power plants according to the present invention has a screening structure on the inner side of the separation tank and a vibration structure connected between the screening structure and the separation tank. The screening structure can continuously collect solid impurities while filtering the wastewater, and the vibration structure can improve the collection effect of solid impurities.

[0018] (2) The wastewater treatment device for thermal power plants described in this invention has a dredging structure on the top side of the screening structure. The dredging structure can quickly dredge the filter cartridge and maintain the filtration effect. Under the push of the first spring, the lifting plate can lift the cleaning brush and remove it from the surface of the filter cartridge. At the same time, a locking rod is provided at the end of the control rod. By locking the locking rod with the two locking slots, the position of the cleaning brush can be fixed, maintaining the dredging state of the cleaning brush on the filter cartridge, which is convenient for operation.

[0019] (3) The wastewater treatment device for thermal power plants described in this invention has a cleaning structure on the bottom side of the separation tank. The cleaning structure makes it easy to clean the separation tank. When cleaning the inside of the separation tank, the user only needs to rotate the fastening screw and release it from the fixing groove to release the bottom plate. At this time, the traction rods on both sides of the bottom plate will slide in the guide groove and limit the rotation angle of the bottom plate, making it convenient for the operator to clean the sludge on the surface of the bottom plate and the inside of the separation tank.

[0020] (4) The wastewater treatment device for thermal power plants according to the present invention has a sedimentation structure connected to the side of the separation tank and an absorption structure provided inside the sedimentation structure. The sedimentation structure can separate the oil from the filtered wastewater, and the absorption structure can separate the oil from the wastewater. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the connection structure between the separation tank and the mounting side plate of the present invention;

[0024] Figure 3 for Figure 2 The diagram shows an enlarged view of part A.

[0025] Figure 4 This is a schematic diagram of the sedimentation tank of the present invention;

[0026] Figure 5 This is a schematic diagram of the connection structure between the separation tank and the collection pipe of the present invention;

[0027] Figure 6 for Figure 5 The diagram shows an enlarged view of part B.

[0028] Figure 7 This is a schematic diagram of the connection structure between the separation tank and the screw feeder of the present invention;

[0029] Figure 8 for Figure 7 The diagram shows an enlarged view of section C.

[0030] Figure 9 This is a schematic diagram of the connection structure between the mounting side plate and the filter cartridge of the present invention;

[0031] Figure 10 for Figure 9 The diagram shows an enlarged view of section D.

[0032] Figure 11 This is a schematic diagram of the connection structure between the separation tank and the oscillation tank of the present invention;

[0033] Figure 12 This is a schematic diagram of the connection structure between the separation tank and the drive rack of the present invention;

[0034] Figure 13 for Figure 12 The diagram shows an enlarged view of part E.

[0035] Figure 14This is a schematic diagram of the connection structure between the sedimentation tank and the mounting plate of the present invention.

[0036] In the diagram: 1. Separation tank; 2. Screening structure; 201. Collection pipe; 202. Inlet pipe; 203. Mounting side plate; 204. Filter cartridge; 205. Screw feeder; 206. Lifting plate; 207. Connecting block; 208. First pulley; 209. Transmission belt; 210. Gear groove; 211. Second pulley; 212. Drive rack; 3. Unblocking structure; 301. Control rod; 302. Cleaning brush; 303. Pushing rod; 304. Lifting block; 305. First spring; 306. Transmission gear; 307. Engaging rod; 308. Second spring; 309. Slot; 4. Sedimentation structure; 401. Sedimentation tank; 402. Water supply pipe 403. First partition; 404. Second partition; 405. Sealing plate; 406. First float; 407. First limiting groove; 5. Cleaning structure; 501. Base plate; 502. Sealing ring; 503. Traction rod; 504. Guide groove; 505. Rotating block; 506. Fastening screw; 507. Fixing groove; 6. Suction structure; 601. Mounting plate; 602. Mesh plate; 603. Adjusting rod; 604. Oil suction pipe; 605. Second float; 606. Slide groove; 7. Vibration structure; 701. Vibration groove; 702. Torsion spring; 703. Deflection block; 704. Abutment block; 705. Third spring; 706. Second limiting groove. Detailed Implementation

[0037] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0038] like Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 7 As shown, the wastewater treatment device for thermal power plants according to the present invention includes a separation tank 1, a screening structure 2 provided on the inner side of the separation tank 1, a vibrating structure 7 connected between the screening structure 2 and the separation tank 1, a clearing structure 3 provided on the top side of the screening structure 2, a cleaning structure 5 provided on the bottom side of the separation tank 1, a sedimentation structure 4 connected to the side of the separation tank 1, and an absorption structure 6 provided on the inner side of the sedimentation structure 4.

[0039] Specifically, such as Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12As shown, the screening structure 2 includes a collection pipe 201. The collection pipe 201 is fixedly connected to the side of the separation tank 1. A connecting block 207 is fixedly connected to the middle of the collection pipe 201. A mounting side plate 203 is rotatably connected between the connecting block 207 and the inner side of the separation tank 1. A filter cartridge 204 is fixedly connected to the middle of the mounting side plate 203. A screw feed rod 205 is rotatably connected to the inner side of the collection pipe 201. The end of the screw feed rod 205 passes through the mounting side plate 203 and is rotatably connected to the side of the separation tank 1. Multiple lifting plates 206 are fixedly connected in a ring shape to the inner side of the mounting side plate 203. The sides of the lifting plates 206 abut against the inner side of the filter cartridge 204. A water inlet pipe 202 is fixedly connected to the side of the separation tank 1. The end of the water inlet pipe 202 passes through the connecting block 207 at the bottom side of the collection pipe 201. The part of the collection pipe 201 located inside the filter cylinder 204 has a "V" shaped structure. The side of the mounting side plate 203 is provided with a toothed groove 210. A drive toothed rod 212 is rotatably connected to the inside of the separation tank 1. The two ends of the drive toothed rod 212 are respectively engaged with the two sides of the mounting side plate 203 through the toothed groove 210. A second pulley 211 is fixedly connected to the end of the drive toothed rod 212. A first pulley 208 is fixedly connected to the end of the spiral feeding rod 205. A transmission belt 209 is sleeved between the first pulley 208 and the second pulley 211.

[0040] Wastewater is discharged into the inner side of the filter cartridge 204 through the inlet pipe 202 provided on the connecting block 207. After filtration by the filter cartridge 204, solid impurities in the wastewater will remain inside the filter cartridge 204. A collection pipe 201 is provided in the middle of the filter cartridge 204. The part of the collection pipe 201 located inside the filter cartridge 204 has a "V" shape structure. The end of the collection pipe 201 is fixed to the outside of the separation tank 1. As the mounting side plate 203 and the filter cartridge 204 continue to rotate, the lifting plate 206 provided in the middle of the mounting side plate 203 will lift the solid impurities accumulated on the bottom side of the filter cartridge 204 to a higher position. The lifting plate 206 moves to the filter cartridge 204. After reaching the top position of 4, due to the change in angle of the lifting plate 206, the impurities on its surface will eventually slide down to the inside of the collection pipe 201. The inside of the collection pipe 201 is equipped with a spiral feeding rod 205. Through the transmission effect of the first pulley 208, the second pulley 211 and the transmission belt 209, the drive rack 212 drives the mounting side plate 203 to rotate, and at the same time drives the spiral feeding rod 205 inside the collection pipe 201 to rotate, thereby realizing the conveying of the solid impurities collected in the collection pipe 201 to the end and finally discharged, so that the user does not need to repeatedly clean the impurities separated from the wastewater, thus improving the treatment efficiency.

[0041] Specifically, such as Figure 6 , Figure 8 , Figure 11As shown, the oscillation structure 7 includes a torsion spring 702. Both ends of the lifting plate 206 are rotatably connected to the mounting side plate 203. A torsion spring 702 is fixedly connected between the end of the lifting plate 206 and the mounting side plate 203. A deflection block 703 is fixedly connected to one end of the lifting plate 206. Multiple second limiting grooves 706 are provided on the side of the mounting side plate 203. The side of the deflection block 703 is slidably connected to the mounting side plate 203 through the arc-shaped second limiting grooves 706. The deflection block 703 is slidably connected to the side of the mounting side plate 203 with an abutment block 704. A third spring 705 is fixedly connected between the abutment block 704 and the deflection block 703. The side of the separation tank 1 is provided with a plurality of vibration grooves 701. The vibration grooves 701 are strip-shaped and arranged in a ring. The end of the abutment block 704 is hemispherical. The spherical end of the abutment block 704 abuts against the inner side wall of the separation tank 1 through the vibration groove 701.

[0042] To prevent impurities from adhering to the surface of the lifting plate 206 and improve the collection effect of solid impurities, a deflection block 703 is fixedly connected to the end of the lifting plate 206. Through the limitation of the second limiting groove 706, the deflection block 703 can drive the lifting plate 206 to rotate within a certain range. During the rotation of the mounting side plate 203, the abutment block 704 on the side of the deflection block 703 will repeatedly abut against the vibration groove 701 opened inside the separation tank 1. Combined with the recovery effect of the torsion spring 702 fixed between the lifting plate 206 and the mounting side plate 203, the lifting plate 206 will repeatedly vibrate during the rotation of the mounting side plate 203, thereby shaking off the solid impurities on the surface of the lifting plate 206 in time, making the collection tube 201 more effective in collecting solid impurities.

[0043] Specifically, such as Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 11 , Figure 13As shown, the unblocking structure 3 includes a cleaning brush 302. The top side of the filter cartridge 204 is provided with a cleaning brush 302. A transmission gear 306 is fixedly connected to each end of the cleaning brush 302. A lifting block 304 is rotatably connected to each end of the cleaning brush 302. The lifting block 304 is slidably connected to the inner side of the separation tank 1. A first spring 305 is fixedly connected between the lifting block 304 and the separation tank 1. A control rod 301 is rotatably connected to the top side of the separation tank 1. A pushing rod 303 is vertically fixedly connected to each end of the control rod 301. The side of the pushing rod 303 is slidably connected to the top side of the lifting block 304 on the same side. A locking rod 307 is slidably connected to the end of the control rod 301. A second spring 308 is fixedly connected between the locking rod 307 and the control rod 301. A slot 309 is opened on the side of the separation tank 1. The end of the locking rod 307 is locked with the separation tank 1 through the slot 309.

[0044] During wastewater filtration, the filter cartridge 204 rotates, allowing the filter holes to remain clear for an extended period. If the filter cartridge 204 becomes clogged after prolonged use, to maintain its filtration efficiency, the user can rotate the control lever 301 located on the side of the separation tank 1. The push rods 303 at both ends of the control lever 301 will then push the corresponding lifting blocks 304 downwards until the transmission gears 306 at both ends of the cleaning brush 302 mesh with the toothed grooves 210 on the mounting side plate 203. At this point, the mounting side plate 203 will drive the cleaning brush... When the brush 302 rotates, the long bristles on the side of the cleaning brush 302 extend into the filter holes on the surface of the filter cartridge 204 to achieve a cleaning effect, thereby maintaining the filtration capacity of the filter cartridge 204. After cleaning is completed, the control rod 301 is released, and the lifting plate can lift the cleaning brush 302 and remove it from the surface of the filter cartridge 204 under the push of the first spring 305. At the same time, a locking rod 307 is provided at the end of the control rod 301. By locking the locking rod 307 with the two locking slots 309, the position of the cleaning brush 302 can be fixed, maintaining the cleaning brush 302 in the cleaning state of the filter cartridge 204, which is convenient for operation.

[0045] Specifically, such as Figure 2 , Figure 3 , Figure 5 , Figure 11As shown, the cleaning structure 5 includes a base plate 501. The bottom side of the separation tank 1 is rotatably connected to the base plate 501. A sealing ring 502 is fixedly connected to the bottom side of the separation tank 1. The base plate 501 abuts against the bottom side of the separation tank 1 through the sealing ring 502. A traction rod 503 is rotatably connected to each side of the base plate 501. A guide groove 504 is provided on the inner side of the separation tank 1. The end of the traction rod 503 is slidably connected to the separation tank 1 through the guide groove 504. A rotating block 505 is rotatably connected to the end of the base plate 501. A fastening screw 506 is threadedly connected to the middle of the rotating block 505. A fixing groove 507 is provided on the side of the separation tank 1. The end of the fastening screw 506 abuts against the separation tank 1 through the fixing groove 507.

[0046] After prolonged wastewater treatment, fine particles of silt accumulate on the bottom side of the separation tank 1. To facilitate cleaning of the interior of the separation tank 1, a rotatable bottom plate 501 is provided on the bottom side of the separation tank 1. The bottom plate 501 is sealed by a sealing ring 502 to ensure the sealing performance of the bottom of the separation tank 1. When cleaning the interior of the separation tank 1, the user only needs to rotate the fastening screw 506 and release it from the fixing groove 507 to release the bottom plate 501. At this time, the traction rods 503 on both sides of the bottom plate 501 will slide in the guide groove 504 and limit the rotation angle of the bottom plate 501, making it convenient for the operator to clean the sludge on the surface of the bottom plate 501 and the inside of the separation tank 1.

[0047] Specifically, such as Figure 1 , Figure 4 , Figure 14 As shown, the sedimentation structure 4 includes a sedimentation tank 401. The sedimentation tank 401 is provided on the side of the separation tank 1. A water supply pipe 402 is connected between the sedimentation tank 401 and the separation tank 1. Two first partitions 403 are fixedly connected in parallel in the middle of the sedimentation tank 401. A second partition 404 is provided between the two first partitions 403. The bottom side of the second partition 404 is fixedly connected to the bottom side of the sedimentation tank 401. A first limiting groove 407 is provided on the inner side of the sedimentation tank 401. A sealing plate 405 is slidably connected to the sedimentation tank 401 through the first limiting groove 407. A first float 406 is fixedly connected to the side of the sealing plate 405.

[0048] After the initial filtration of wastewater by separation tank 1, oil that cannot be separated by filtration will still be present in the wastewater. At this time, the filtered wastewater from separation tank 1 is discharged into sedimentation tank 401 through water pipe 402. After entering sedimentation tank 401, the wastewater is first blocked by a sealing plate. The sealing plate prevents the oily wastewater from directly entering the other side of the first partition 403. As the water level in sedimentation tank 401 rises, the first float 406 floats up and drives the sealing plate to rise, and the wastewater begins to enter between the two first partitions 403. A second partition 4 is provided between the two first partitions 403. 04. A gap is left between the bottom side of the first baffle 403 and the bottom of the sedimentation tank 401. The wastewater will only be discharged into the other side of the first baffle 403 when the liquid level of the wastewater reaches the top side of the second baffle 404. As the wastewater is continuously injected, most of the oil will be blocked on one side of the two first baffles 403. At the same time, the setting of the first baffle 403 and the second baffle 404 effectively reduces the disturbance of the water body on the other side of the first baffle 403 facing the water pipe 402, improves the sedimentation effect of the wastewater in the sedimentation tank 401, and reduces the interference of various impurities on the subsequent chemical treatment of wastewater.

[0049] Specifically, such as Figure 4 , Figure 14 As shown, the suction structure 6 includes a chute 606. The chute 606 is provided on the inner side of the sedimentation tank 401. The sedimentation tank 401 is slidably connected to the mounting plate 601 through the chute 606. A mesh plate 602 is fixedly connected to each side of the mounting plate 601. An adjusting rod 603 is rotatably connected to the middle of the mounting plate 601. A second float 605 is threaded onto the adjusting rod 603. The two ends of the second float 605 are slidably connected to the two sides of the mounting plate 601. An oil suction pipe 604 is fixedly connected to the mounting plate 601, and the end of the oil suction pipe 604 is located on the top side of the mounting plate 601.

[0050] With the first baffle 403 and the second baffle 404 in place, when the sedimentation tank 401 is filled with wastewater, the oil in the wastewater will concentrate on the side of the first baffle 403 near the water supply pipe 402. The sedimentation tank 401 is provided with an installation plate 601, on which a second float 605 is provided. The user can rotate the adjusting rod 603 to adjust the relative position between the second float 605 and the installation plate 601, so that the buoyancy provided by the second float 605 can just place the upper surface of the installation plate 601 at the oil-liquid interface of the wastewater. Mesh plates 602 are provided on both sides of the installation plate 601. The mesh plates 602 can reduce the shaking of the liquid surface. At the same time, the installation plate 601 is provided with an oil suction pipe 604 for absorbing oil. The end of the oil suction pipe 604 is located on the upper surface of the installation plate 601. The oil on the surface of the wastewater can be separated by continuous suction through the oil suction pipe 604.

[0051] In use, this invention firstly involves a filter cylinder 204 for filtering wastewater, fixed between the mounting side plates 203 located inside the separation tank 1. The filter cylinder 204 has a cylindrical structure. A drive gear 212 is located on the side of the separation tank 1, driven by a motor. When the drive gear 212 rotates, it drives the mounting side plates 203 and the filter cylinder 204 to rotate via the tooth grooves 210. Wastewater is discharged into the inside of the filter cylinder 204 through the inlet pipe 202 on the connecting block 207. After filtration by the filter cylinder 204, solid impurities in the wastewater are retained inside the filter cylinder 204. A collection pipe 201 is located in the middle of the filter cylinder 204. The portion of the collection pipe 201 inside the filter cylinder 204 has a "V" shape. The end is fixed to the outside of the separation tank 1. As the mounting side plate 203 and the filter cartridge 204 continue to rotate, the lifting plate 206 set in the middle of the mounting side plate 203 will lift the solid impurities accumulated on the bottom side of the filter cartridge 204 to a higher position. After the lifting plate 206 moves to the top position of the filter cartridge 204, due to the change in the angle of the lifting plate 206, the impurities on its surface will eventually slide down to the inside of the collection pipe 201. The inside of the collection pipe 201 is provided with a spiral feeding rod 205. Through the transmission effect of the first pulley 208, the second pulley 211 and the transmission belt 209, the drive rack 212 will drive the mounting side plate 203 to rotate and at the same time drive the spiral feeding rod 205 inside the collection pipe 201 to rotate, thereby realizing the collection of solid impurities in the collection pipe 201. Solid impurities are conveyed to the end and finally discharged, eliminating the need for users to repeatedly clean the impurities separated from the wastewater, thus improving treatment efficiency. To prevent impurities from adhering to the surface of the lifting plate 206 and improve the collection effect of solid impurities, a deflection block 703 is fixedly connected to the end of the lifting plate 206. Through the limitation of the second limiting groove 706, the deflection block 703 can drive the lifting plate 206 to rotate within a certain range. During the rotation of the mounting side plate 203, the abutment block 704 on the side of the deflection block 703 will repeatedly abut against the vibration groove 701 opened inside the separation tank 1. Combined with the restoring effect of the torsion spring 702 fixed between the lifting plate 206 and the mounting side plate 203, the lifting plate 206 rotates within the mounting side plate 203. During the process, repeated vibrations will occur, which will promptly shake off solid impurities on the surface of the lifting plate 206, making the collection pipe 201 more effective at collecting solid impurities. During wastewater filtration, the filter cartridge 204 is rotating, allowing the filter holes on it to remain clear for a longer period. If the filter cartridge 204 becomes clogged after prolonged use, to maintain its filtration effect, the user can rotate the control rod 301 located on the side of the separation tank 1. The push rods 303 at both ends of the control rod 301 will then push the corresponding lifting blocks 304 downwards until the transmission gears 306 at both ends of the cleaning brush 302 mesh with the toothed grooves 210 on the mounting side plate 203.At this time, the installation of the side plate 203 will drive the cleaning brush 302 to rotate. The long bristles on the side of the cleaning brush 302 will extend into the filter holes on the surface of the filter cartridge 204 while rotating to achieve a cleaning effect, thereby maintaining the filtration capacity of the filter cartridge 204. After cleaning is completed, the control rod 301 is released. Under the push of the first spring 305, the lifting plate can lift the cleaning brush 302 and remove it from the surface of the filter cartridge 204. At the same time, a locking rod 307 is provided at the end of the control rod 301. By locking the locking rod 307 with the two locking slots 309, the position of the cleaning brush 302 can be fixed, maintaining the cleaning brush 302 in the cleaning state of the filter cartridge 204, which is convenient for operation. After the bottom of the separation tank 1 has been treated for a long time, Fine particles of silt accumulate. To facilitate cleaning the interior of separation tank 1, a rotatable bottom plate 501 is provided on the bottom side of separation tank 1. The bottom plate 501 is sealed by a sealing ring 502 to ensure the sealing performance of the bottom of separation tank 1. When cleaning the interior of separation tank 1, the user only needs to turn the fastening screw 506 and release it from the fixing groove 507 to release the bottom plate 501. At this time, the traction rods 503 on both sides of the bottom plate 501 will slide in the guide groove 504 and limit the rotation angle of the bottom plate 501, making it convenient for operators to clean the surface of the bottom plate 501 and the inside of separation tank 1. After the initial filtration of wastewater is completed by separation tank 1, there will still be oil in the wastewater that cannot be separated by filtration. At this time, through Water pipe 402 discharges the filtered wastewater from separation tank 1 into sedimentation tank 401. Upon entering sedimentation tank 401, the wastewater is first blocked by a sealing plate, preventing oily wastewater from directly entering the other side of the first baffle 403. As the water level in sedimentation tank 401 rises, the first float 406 rises, causing the sealing plate to lift, and the wastewater begins to flow between the two first baffles 403. A second baffle 404 is located between the two first baffles 403. A gap is left between the bottom of the first baffle 403 and the bottom of sedimentation tank 401. The wastewater only flows into the other side of the first baffle 403 when the surface of the wastewater reaches the top of the second baffle 404. With continuous wastewater injection, most of the oil is blocked by the two first baffles. On one side of 403, the arrangement of the first baffle 403 and the second baffle 404 effectively reduces the disturbance of the water body on the other side of the first baffle 403 facing the water supply pipe 402, improves the sedimentation effect of wastewater in the sedimentation tank 401, and reduces the interference of various impurities on the subsequent chemical treatment of wastewater. Through the arrangement of the first baffle 403 and the second baffle 404, when the sedimentation tank 401 is full of wastewater, the oil in the wastewater will concentrate on the side of the first baffle 403 near the water supply pipe 402. The sedimentation tank 401 is equipped with an installation plate 601, on which a second float 605 is installed. The user can rotate the adjusting rod 603 to adjust the relative position between the second float 605 and the installation plate 601.The buoyancy provided by the second float 605 ensures that the upper surface of the mounting plate 601 is positioned precisely at the oil-water interface. Screen plates 602 are located on both sides of the mounting plate 601 to reduce surface sloshing. Simultaneously, the mounting plate 601 is equipped with an oil suction pipe 604, the end of which is located on the upper surface of the mounting plate 601. Continuous suction through the oil suction pipe 604 separates the oil from the surface of the wastewater.

[0052] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0053] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A wastewater treatment device for thermal power plants, characterized in that, It includes a separation tank (1), and the inner side of the separation tank (1) is provided with a screening structure (2); The screening structure (2) includes a collection pipe (201). The collection pipe (201) is fixedly connected to the side of the separation tank (1). A connecting block (207) is fixedly connected to the middle of the collection pipe (201). An installation side plate (203) is rotatably connected between the connecting block (207) and the inner side of the separation tank (1). A filter cylinder (204) is fixedly connected to the middle of the installation side plate (203). A spiral feeding rod (205) is rotatably connected to the inner side of the collection pipe (201). The end of the spiral feeding rod (205) passes through the installation side plate (203) and is rotatably connected to the side of the separation tank (1). Multiple lifting plates (206) are connected in a ring on the inner side of the installation side plate (203). The side of the lifting plate (206) abuts against the inner side of the filter cylinder (204). The separation tank (1) is fixedly connected to a water inlet pipe (202) on its side. The end of the water inlet pipe (202) passes through a connecting block (207) at the bottom of the collection pipe (201). The part of the collection pipe (201) located inside the filter cartridge (204) has a "V" shaped structure. The side of the mounting side plate (203) is provided with a toothed groove (210). The inner side of the separation tank (1) is rotatably connected to a drive toothed rod (212). The two ends of the drive toothed rod (212) are respectively engaged with the two sides of the mounting side plate (203) through the toothed groove (210). The end of the drive toothed rod (212) is fixedly connected to a second pulley (211). The end of the spiral feeding rod (205) is fixedly connected to a first pulley (208). A transmission belt (209) is sleeved between the first pulley (208) and the second pulley (211). A vibrating structure (7) is connected between the screening structure (2) and the separation tank (1). The vibrating structure (7) includes a torsion spring (702). The two ends of the lifting plate (206) are rotatably connected to the mounting side plate (203). The end of the lifting plate (206) is fixedly connected to the mounting side plate (203). A deflection block (703) is fixedly connected to one end of the lifting plate (206). A plurality of second limiting grooves (706) are opened on the side of the mounting side plate (203). The side of the deflection block (703) is slidably connected to the mounting side plate (203) through the arc-shaped second limiting groove (706). The deflection block (703) is slidably connected to the abutment block (704) on the side opposite to the mounting side plate (203). A third spring (705) is fixedly connected between the abutment block (704) and the deflection block (703). The side of the separation pool (1) is provided with multiple vibration grooves (701). The vibration grooves (701) are strip-shaped and arranged in a ring. The end of the abutment block (704) is hemispherical. The spherical end of the abutment block (704) abuts against the inner wall of the separation pool (1) through the vibration groove (701). The top side of the screening structure (2) is provided with a clearing structure (3), the clearing structure (3) includes a cleaning brush (302), the top side of the filter cartridge (204) is provided with a cleaning brush (302), a transmission gear (306) is fixedly connected to each end of the cleaning brush (302), a lifting block (304) is rotatably connected to each end of the cleaning brush (302), the lifting block (304) is slidably connected to the inside of the separation tank (1), and a first spring (305) is fixedly connected between the lifting block (304) and the separation tank (1). A control rod (301) is rotatably connected to the top side of the separation tank (1). A push rod (303) is vertically fixed to each end of the control rod (301). The side of the push rod (303) is slidably connected to the top side of the lifting block (304) on the same side. A locking rod (307) is slidably connected to the end of the control rod (301). A second spring (308) is fixedly connected between the locking rod (307) and the control rod (301). A slot (309) is opened on the side of the separation tank (1). The end of the locking rod (307) is locked to the separation tank (1) through the slot (309).

2. The wastewater treatment device for a thermal power plant according to claim 1, characterized in that: The bottom side of the separation tank (1) is provided with a cleaning structure (5), the cleaning structure (5) includes a bottom plate (501), the bottom side of the separation tank (1) is rotatably connected to the bottom plate (501), the bottom side of the separation tank (1) is fixedly connected to a sealing ring (502), the bottom plate (501) abuts against the bottom side of the separation tank (1) through the sealing ring (502), and a traction rod (503) is rotatably connected to each side of the bottom plate (501). The inner side of the separation tank (1) A guide groove (504) is provided, and the end of the traction rod (503) is slidably connected to the separation tank (1) through the guide groove (504). A rotating block (505) is rotatably connected to the end of the bottom plate (501), and a fastening screw (506) is threadedly connected to the middle of the rotating block (505). A fixing groove (507) is provided on the side of the separation tank (1), and the end of the fastening screw (506) abuts against the separation tank (1) through the fixing groove (507).

3. The wastewater treatment device for a thermal power plant according to claim 1, characterized in that: The separation tank (1) is connected to a sedimentation structure (4) on its side. The sedimentation structure (4) includes a sedimentation tank (401). The sedimentation tank (401) is provided on the side of the separation tank (1). A water supply pipe (402) is connected between the sedimentation tank (401) and the separation tank (1). Two first partitions (403) are fixedly connected in parallel in the middle of the sedimentation tank (401). A second partition (404) is provided between the two first partitions (403). The bottom side of the second partition (404) is fixedly connected to the bottom side of the sedimentation tank (401).

4. The wastewater treatment device for a thermal power plant according to claim 3, characterized in that: The sedimentation tank (401) has a first limiting groove (407) on its inner side. The sedimentation tank (401) is slidably connected to a sealing plate (405) through the first limiting groove (407). A first float (406) is fixedly connected to the side of the sealing plate (405).

5. The wastewater treatment device for a thermal power plant according to claim 3, characterized in that: The sedimentation structure (4) is provided with an absorption structure (6) on its inner side. The absorption structure (6) includes a chute (606). The sedimentation tank (401) is provided with a chute (606) on its inner side. The sedimentation tank (401) is slidably connected to an installation plate (601) through the chute (606). A mesh plate (602) is fixedly connected to each side of the installation plate (601). An adjusting rod (603) is rotatably connected to the middle of the installation plate (601). A second float (605) is threadedly connected to the adjusting rod (603). The two ends of the second float (605) are slidably connected to the two sides of the installation plate (601). An oil suction pipe (604) is fixedly connected to the installation plate (601), and the end of the oil suction pipe (604) is located on the top side of the installation plate (601).

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