Thermal power plant wastewater treatment device

Abstract

The invention relates to the technical field of wastewater treatment, in particular to a thermal power plant wastewater treatment device which comprises a separation tank, a screening structure arranged on the inner side of the separation tank, an oscillation structure connected between the screening structure and the separation tank, a dredging structure arranged on the top side of the screening structure, and a cleaning structure arranged on the bottom side of the separation tank. A precipitation structure is connected to the side surface of the separation tank; a suction structure is arranged on the inner side of the precipitation structure; solid impurities can be continuously collected while waste water is filtered through the screening structure, the collection effect on the solid impurities can be improved through the oscillation structure, the filter cartridge can be rapidly dredged through the dredging structure, the filtering effect is kept, the separation tank can be conveniently cleaned through the cleaning structure, and the cleaning efficiency is improved. Oil separation can be carried out on the filtered wastewater through the precipitation structure, and the oil part in the wastewater can be separated through the suction structure.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and specifically relates to a wastewater treatment device for a thermal power plant. Background Art

[0002] A thermal power plant refers to a thermal power plant that, while generating electricity, also uses the extraction steam or exhaust steam of a steam turbine to heat users. The main working principle is to use the hot water after power generation in a thermal power plant and heat it again for heating. The wastewater from a thermal power plant mainly includes ash sluicing water, dust removal water, industrial sewage, domestic sewage, acid-base waste liquid, condenser cooling water drainage, etc. The direct discharge of this wastewater will affect the reproduction and growth of aquatic organisms.

[0003] Filtration is an essential step in the wastewater treatment process. However, for the solid residues filtered from wastewater, existing equipment usually needs to be processed regularly. If the residues accumulate, it will not only affect the filtration effect but even block the treatment pipeline. On the other hand, in addition to solid impurities, the wastewater from a thermal power plant may also contain some oil, and the existing treatment equipment has poor separation effect on the oil. Summary of the Invention

[0004] In view of the problems in the prior art, the present invention provides a wastewater treatment device for a thermal power plant.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a wastewater treatment device for a thermal power plant, including a separation tank. A screening structure is arranged inside the separation tank. An oscillation structure is connected between the screening structure and the separation tank. A dredging structure is arranged on the top side of the screening structure. A cleaning structure is arranged on the bottom side of the separation tank. A precipitation structure is connected to the side of the separation tank. An extraction structure is arranged inside the precipitation structure.

[0006] Specifically, the screening structure includes a collection pipe. The collection pipe is fixedly connected to the side of the separation tank. A connection block is fixedly connected to the middle of the collection pipe. An installation side plate is rotatably connected between the connection block and the inside 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 inside the collection pipe. The end of the spiral feeding rod penetrates through the installation side plate and is rotatably connected to the side of the separation tank. A plurality of lifting plates are fixedly connected in a ring shape inside the installation side plate. The side of the lifting plate abuts against the inside 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 penetrates through the connection block at the bottom of the collection pipe.

[0007] Specifically, the part of the collecting tube located on the inner side of the filter cartridge is in a "V"-shaped structure, a tooth groove is opened on the side of the mounting side plate, and a driving gear rod is rotatably connected to the inner side of the separation tank. The two ends of the driving gear rod are respectively engaged with the two sides of the mounting side plate through the tooth grooves, and the end of the driving gear rod is fixedly connected to the second pulley, and the end of the spiral feeding rod is fixedly connected to the first pulley, and a transmission belt is sleeved between the first pulley and the second pulley.

[0008] Specifically, the oscillation structure includes a torsion spring, the two ends of the lifting plate are respectively rotatably connected to the mounting side plate, a torsion spring is fixedly connected between the end of the lifting plate and the mounting side plate, one end of the lifting plate is fixedly connected to a deflection block, a plurality of second limit grooves are provided on the side of the mounting side plate, and the side of the deflection block is slidably connected to the mounting side plate through the second limit grooves of the arc structure.

[0009] Specifically, the deflection block is slidably connected to a resistance block on the side facing away from the mounting side plate, a third spring is fixedly connected between the resistance block and the deflection block, a plurality of oscillation grooves are provided on the side of the separation tank, the oscillation grooves are in a strip-type structure, and a plurality of the oscillation grooves are arranged in a ring-like shape, the end of the resistance block is in a hemispherical structure, and the spherical end of the resistance block is in contact with the inner wall of the separation tank through the oscillation groove.

[0010] Specifically, the dredging structure includes a cleaning brush, and a cleaning brush is provided on the top side of the filter cartridge. Both ends of the cleaning brush are respectively fixedly connected to a transmission gear, and both ends of the cleaning brush are respectively rotatably connected to a lifting block, and the lifting block is slidably connected to the inner side 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 pushing rod is vertically fixedly connected to both ends of the control rod. The side of the pushing rod is slidably connected to the top side of the lifting block arranged on the same side, and the end of the control rod is slidably connected to a locking rod, and a second spring is fixedly connected between the locking rod and the control rod. A locking groove is provided on the side of the separation tank, and the end of the locking rod is engaged with the separation tank through the locking groove.

[0012] Specifically, the cleaning structure includes a bottom plate, the bottom side of the separation tank is rotatably connected to the bottom plate, the bottom side of the separation tank is fixedly connected to a sealing ring, the bottom plate is in contact with the bottom side of the separation tank through the sealing ring, and two sides of the bottom plate are rotatably connected to a traction rod, a guide groove is provided on the inner side of the separation tank, and the end of the traction rod is slidably connected to the separation tank through the guide groove, the end of the bottom plate is rotatably connected to a rotating block, the middle part of the rotating block is threadedly connected to a fastening screw, a fixed groove is provided on the side of the separation tank, and the end of the fastening screw is in contact with the separation tank through the fixed groove.

[0013] Specifically, the precipitation structure includes a sedimentation tank. The sedimentation tank is provided on the side of the separation tank. A water delivery pipe is connected between the sedimentation tank and the separation tank. Two first partition plates are fixedly connected in parallel in the middle of the sedimentation tank. A second partition plate is provided between the two first partition plates. The bottom side of the second partition plate is fixedly connected to the bottom side of the sedimentation tank.

[0014] Specifically, a first limiting groove is formed inside the sedimentation tank. The sedimentation tank is slidably connected with a sealing plate through the first limiting groove. A first floating block is fixedly connected to the side surface of the sealing plate.

[0015] Specifically, the suction structure includes a chute. The chute is formed inside the sedimentation tank. The sedimentation tank is slidably connected with a mounting plate through the chute. A net plate is fixedly connected to each of the two sides of the mounting plate. An adjusting rod is rotatably connected to the middle of the mounting plate. A second floating block is threadedly connected to the adjusting rod. The two ends of the second floating block are respectively slidably connected to the two sides of the mounting plate. An oil suction pipe is fixedly connected to the mounting plate, and the end of the oil suction pipe is arranged on the top side of the mounting plate.

[0016] The beneficial effects of the present invention are as follows:

[0017] (1) For a thermal power plant wastewater treatment device of the present invention, a screening structure is provided inside the separation tank. An oscillation structure is connected between the screening structure and the separation tank. Through the screening structure, solid impurities can be continuously collected while filtering the wastewater. Through the oscillation structure, the collection effect of solid impurities can be improved.

[0018] (2) For a thermal power plant wastewater treatment device of the present invention, a dredging structure is provided on the top side of the screening structure. Through the dredging structure, the filter cylinder can be quickly dredged to maintain the filtering effect. Under the push of the first spring, the lifting plate can lift the cleaning brush and separate it from the surface of the filter cylinder. At the same time, a clamping rod is provided at the end of the control rod. By clamping the clamping rod between the two clamping grooves, the position of the cleaning brush can be fixed to maintain the dredging state of the cleaning brush on the filter cylinder, which is convenient for operation.

[0019] (3) For a thermal power plant wastewater treatment device of the present invention, a cleaning structure is provided on the bottom side of the separation tank. Through the cleaning structure, the separation tank can be conveniently cleaned. When cleaning the inside of the separation tank, the user only needs to rotate the fastening screw rod and remove 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 guiding grooves and limit the rotation angle of the bottom plate, which is convenient for the operator to clean the sludge on the surface of the bottom plate and the inside of the separation tank.

[0020] (4) A wastewater treatment device of the present invention, a precipitation structure is connected to the side of the separation tank, and a suction structure is arranged inside the precipitation structure. Through the precipitation structure, the oil in the filtered wastewater can be separated, and through the suction structure, the oily part in the wastewater can be separated. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0024] Figure 3 It is Figure 2 The enlarged schematic diagram of part A shown;

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

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

[0027] Figure 6 It is Figure 5 The enlarged schematic diagram of part B shown;

[0028] Figure 7 It is a schematic diagram of the connection structure between the separation tank and the spiral feeding rod of the present invention;

[0029] Figure 8 It is Figure 7 The enlarged schematic diagram of part C shown;

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

[0031] Figure 10 It is Figure 9 The enlarged schematic diagram of part D shown;

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

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

[0034] Figure 13 It is Figure 12 The enlarged schematic diagram of part E shown;

[0035] Figure 14Schematic diagram of the connection structure between the sedimentation tank and the mounting plate of the present invention.

[0036] In the figure: 1, separation tank; 2, screening structure; 201, collection pipe; 202, water inlet pipe; 203, mounting side plate; 204, filter cartridge; 205, screw conveyor; 206, lifting plate; 207, connecting block; 208, first pulley; 209, transmission belt; 210, tooth groove; 211, second pulley; 212, driving rack; 3, dredging 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, clamping groove; 4, sedimentation structure; 401, sedimentation tank; 402, water delivery pipe; 403, first partition; 404, second partition; 405, sealing plate; 406, first floating block; 407, first limit groove; 5, cleaning structure; 501, bottom plate; 502, sealing ring; 503, towing rod; 504, guiding 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 floating block; 606, sliding groove; 7, oscillation structure; 701, oscillation groove; 702, torsion spring; 703, deflecting block; 704, abutting block; 705, third spring; 706, second limit groove. Detailed implementation manners

[0037] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0038] As Figure 1 、 Figure 3 、 Figure 4 、 Figure 6 、 Figure 7 shown, a wastewater treatment device for a thermal power plant according to the present invention includes a separation tank 1, a screening structure 2 is provided inside the separation tank 1, an oscillation structure 7 is connected between the screening structure 2 and the separation tank 1, a dredging structure 3 is provided on the top side of the screening structure 2, a cleaning structure 5 is provided on the bottom side of the separation tank 1, a sedimentation structure 4 is connected to the side of the separation tank 1, and a suction structure 6 is provided inside the sedimentation structure 4.

[0039] Specifically, as Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12As shown in the figure, 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 connection block 207 is fixedly connected to the middle of the collection pipe 201. An installation side plate 203 is rotatably connected between the connection 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 penetrates through the installation side plate 203 and is rotatably connected to the side of the separation tank 1. A plurality of lifting plates 206 are fixedly connected to the inner side of the installation side plate 203 in a circular shape. The side of the lifting plate 206 abuts against the inner side of the filter cylinder 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 penetrates through the connection block 207 at the bottom side of the collection pipe 201. The part of the collection pipe 201 located inside the filter cylinder 204 is in a "V" - shaped structure. Tooth grooves 210 are formed on the side of the installation side plate 203. A driving tooth bar 212 is rotatably connected to the inner side of the separation tank 1. The two ends of the driving tooth bar 212 are respectively meshed with the two sides of the installation side plate 203 through the tooth grooves 210. A second pulley 211 is fixedly connected to the end of the driving tooth bar 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] The wastewater is discharged into the inner side of the filter cylinder 204 through the water inlet pipe 202 arranged on the connection block 207. After the filtering effect of the filter cylinder 204, the solid impurities in the wastewater will remain inside the filter cylinder 204. A collection pipe 201 is arranged in the middle of the filter cylinder 204. The part of the collection pipe 201 located inside the filter cylinder 204 is in a "V" - shaped structure. The end of the collection pipe 201 is fixed on the outer side of the separation tank 1. As the installation side plate 203 and the filter cylinder 204 continue to rotate, the lifting plates 206 arranged in the middle of the installation side plate 203 will lift the solid impurities accumulated at the bottom side of the filter cylinder 204 to a high place. After the lifting plate 206 moves to the top position of the filter cylinder 204, due to the change in the angle of the lifting plate 206, the impurities on its surface will finally slide into the inner side of the collection pipe 201. A spiral feeding rod 205 is arranged inside the collection pipe 201. Through the transmission effect of the first pulley 208, the second pulley 211 and the transmission belt 209, while the driving tooth bar 212 drives the installation side plate 203 to rotate, it will also drive the spiral feeding rod 205 inside the collection pipe 201 to rotate, thereby realizing the conveyance of the solid impurities collected in the collection pipe 201 towards the end and finally discharging them, so that the user does not need to repeatedly clean the impurities separated from the wastewater, improving the treatment efficiency.

[0041] Specifically, as Figure 6 、 Figure 8 、 Figure 11As shown, the oscillation structure 7 includes a torsion spring 702, the two ends of the lifting plate 206 are respectively rotatably connected to the mounting side plate 203, the end of the lifting plate 206 is fixedly connected to the mounting side plate 203 with a torsion spring 702, one end of the lifting plate 206 is fixedly connected to a deflection block 703, a plurality of second limiting grooves 706 are provided on the side of the mounting side plate 203, and the side of the deflection block 703 is slidably connected to the mounting side plate 203 through the second limiting grooves 706 of the arc structure , the deflection block 703 is slidably connected to a resistance block 704 on one side away from the mounting side plate 203, a third spring 705 is fixedly connected between the resistance block 704 and the deflection block 703, a plurality of oscillation grooves 701 are provided on the side of the separation tank 1, the oscillation grooves 701 are in a strip-shaped structure, and a plurality of the oscillation grooves 701 are arranged in a ring shape, the end of the resistance block 704 is in a hemispherical structure, and the spherical end of the resistance block 704 is in contact with the inner wall of the separation tank 1 through the oscillation groove 701;

[0042] In order to prevent impurities from sticking 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 limit groove 706, the deflection block 703 can drive the lifting plate 206 to rotate within a certain range. During the rotation of the installation side plate 203, the resistance block 704 on the side of the deflection block 703 will repeatedly resist the oscillation groove 701 opened on the inner side of the separation tank 1. Combined with the restoring effect of the torsion spring 702 fixed between the lifting plate 206 and the installation side plate 203, the lifting plate 206 will repeatedly oscillate during the rotation of the installation side plate 203, thereby shaking off the solid impurities on the surface of the lifting plate 206 in time, so that the collection tube 201 has a better collection effect on solid impurities.

[0043] Specifically, Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 11 , Figure 13As shown, the dredging structure 3 includes a cleaning brush 302. The cleaning brush 302 is provided on the top side of the filter cartridge 204. A driving 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. 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 surface of the pushing rod 303 is slidably connected to the top side of the lifting block 304 arranged on the same side. A clamping rod 307 is slidably connected to the end of the control rod 301. A second spring 308 is fixedly connected between the clamping rod 307 and the control rod 301. A clamping groove 309 is formed on the side surface of the separation tank 1. The end of the clamping rod 307 is engaged with the separation tank 1 through the clamping groove 309;

[0044] During the filtration process of the waste water by the filter cartridge 204, since the filter cartridge 204 is in a rotating state, the filter holes on the filter cartridge 204 can remain unclogged for a long time. If the filter cartridge 204 has been used for a long time and becomes clogged, in order to maintain the filtering effect of the filter cartridge 204, at this time, the user can rotate the control rod 301 located on the side surface of the separation tank 1. At this time, the pushing rods 303 arranged at both ends of the control rod 301 will push the corresponding lifting blocks 304 downward until the driving gears 306 at both ends of the cleaning brush 302 are engaged with the tooth grooves 210 on the mounting side plate 203. At this time, the mounting side plate 203 will drive the cleaning brush 302 to rotate. The long bristles arranged on the side surface of the cleaning brush 302 will extend into the filter holes on the surface of the filter cartridge 204 during rotation to achieve the dredging effect, thereby maintaining the filtering ability of the filter cartridge 204. After the dredging is completed, release the control rod 301. Under the push of the first spring 305, the lifting plate can lift the cleaning brush 302 and separate it from the surface of the filter cartridge 204. At the same time, a clamping rod 307 is arranged at the end of the control rod 301. By engaging the clamping rod 307 with the two clamping grooves 309, the position of the cleaning brush 302 can be fixed to maintain the dredging state of the cleaning brush 302 for the filter cartridge 204, which is convenient for operation.

[0045] Specifically, such as Figure 2 、 Figure 3 、 Figure 5 、 Figure 11As shown in the figure, 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. A sealing ring 502 is fixedly connected to the bottom side of the separation tank 1. The bottom plate 501 abuts against the bottom side of the separation tank 1 through the sealing ring 502. One traction rod 503 is rotatably connected to each side of the bottom plate 501. A guiding groove 504 is formed in 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 guiding groove 504. A rotating block 505 is rotatably connected to the end of the bottom plate 501. A fastening screw 506 is threadedly connected to the middle of the rotating block 505. A fixing groove 507 is formed in the side surface 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 the bottom side of the separation tank 1 has been treating wastewater for a long time, fine-grained sediment will accumulate. To facilitate the cleaning of the interior of the separation tank 1, a bottom plate 501 that can be rotated and opened is provided at the bottom side of the separation tank 1. The bottom plate 501 ensures the sealing performance of the bottom of the separation tank 1 through the sealing ring 502. When cleaning the interior of the separation tank 1, the user only needs to rotate the fastening screw 506 and remove 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 guiding groove 504 and limit the rotation angle of the bottom plate 501, facilitating the operator to clean the surface of the bottom plate 501 and the inner side of the separation tank 1 of sludge.

[0047] Specifically, as Figure 1 、 Figure 4 、 Figure 14 As shown in the figure, the precipitation structure 4 includes a sedimentation tank 401. The sedimentation tank 401 is provided on the side surface of the separation tank 1. A water delivery pipe 402 is connected between the sedimentation tank 401 and the separation tank 1. Two first partition plates 403 are fixedly connected in parallel in the middle of the sedimentation tank 401. A second partition plate 404 is provided between the two first partition plates 403. The bottom side of the second partition plate 404 is fixedly connected to the bottom side of the sedimentation tank 401. A first limiting groove 407 is formed in the inner side of the sedimentation tank 401. The sedimentation tank 401 is slidably connected with a sealing plate 405 through the first limiting groove 407. A first floating block 406 is fixedly connected to the side surface of the sealing plate 405;

[0048] After the initial filtration of the wastewater is completed in the separation tank 1, there will still be oil in the wastewater that cannot be separated by filtration. At this time, the filtered wastewater in the separation tank 1 is discharged into the sedimentation tank 401 through the water pipe 402. After the wastewater enters the sedimentation tank 401, it will first be blocked by the closing plate. The closing plate can prevent the wastewater containing oil from directly entering the other side of the first partition plate 403. As the water level in the sedimentation tank 401 rises, the first floating block 406 floats up and drives the closing plate to rise, and the wastewater begins to enter between the two first partition plates 403. A second partition plate 406 is provided between the two first partition plates 403. 04. There is a gap between the bottom side of the first partition 403 and the bottom of the sedimentation tank 401. The wastewater will be discharged into the other side of the first partition 403 only when the liquid level reaches the top side of the second partition 404. With the continuous injection of wastewater, most of the oil will be blocked on one side of the two first partitions 403. At the same time, through the arrangement of the first partition 403 and the second partition 404, the disturbance of the water body on the other side of the water pipe 402 by the first partition 403 is effectively reduced, thereby improving the sedimentation effect of the wastewater in the sedimentation tank 401 and reducing the interference of various impurities on the subsequent chemical treatment of the wastewater.

[0049] Specifically, Figure 4 , Figure 14 As shown, the suction structure 6 includes a slide groove 606, a slide groove 606 is provided on the inner side of the sedimentation tank 401, the sedimentation tank 401 is slidably connected to a mounting plate 601 through the slide groove 606, a mesh plate 602 is fixedly connected to both sides of the mounting plate 601, an adjusting rod 603 is rotatably connected to the middle part of the mounting plate 601, a second floating block 605 is threadedly connected to the adjusting rod 603, two ends of the second floating block 605 are slidably connected to both 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 arranged on the top side of the mounting plate 601;

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

[0051] When the present invention is in use, first, a filter cylinder 204 for filtering wastewater is fixed between the mounting side plates 203 inside the separation tank 1. The filter cylinder 204 is in a cylindrical structure. A driving rack 212 is provided on the side of the separation tank 1, and the driving rack 212 is driven by a motor. When the driving rack 212 rotates, it will drive the mounting side plates 203 and the filter cylinder 204 to rotate through the tooth grooves 210. The wastewater is discharged into the inner side of the filter cylinder 204 through the water inlet pipe 202 provided on the connecting block 207. Through the filtering effect of the filter cylinder 204, the solid impurities in the wastewater will remain inside the filter cylinder 204. A collecting pipe 201 is provided in the middle of the filter cylinder 204. The part of the collecting pipe 201 located inside the filter cylinder 204 is in a "V" - shaped structure. The end of the collecting pipe 201 is fixed outside the separation tank 1. As the mounting side plates 203 and the filter cylinder 204 continue to rotate, the lifting plate 206 provided in the middle of the mounting side plates 203 will lift the solid impurities accumulated at the bottom side of the filter cylinder 204 to a high place. After the lifting plate 206 moves to the top position of the filter cylinder 204, due to the change in the angle of the lifting plate 206, the impurities on its surface will finally slide into the inner side of the collecting pipe 201. A spiral feeding rod 205 is provided inside the collecting pipe 201. Through the transmission effect of the first pulley 208, the second pulley 211 and the transmission belt 209, when the driving rack 212 drives the mounting side plates 203 to rotate, it will also drive the spiral feeding rod 205 inside the collecting pipe 201 to rotate, thereby realizing the conveyance of the solid impurities collected in the collecting pipe 201 towards the end and finally discharging them, so that the user does not need to repeatedly clean the impurities separated from the wastewater, improving the treatment efficiency. In order to prevent impurities from adhering to the surface of the lifting plate 206 and improving the collection effect of solid impurities, a deflecting block 703 is fixedly connected to the end of the lifting plate 206. Through the restriction of the second limiting groove 706, the deflecting block 703 can drive the lifting plate 206 to rotate within a certain range. During the rotation of the mounting side plates 203, the abutting block 704 on the side of the deflecting block 703 will repeatedly abut against the oscillating 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 plates 203, the lifting plate 206 will oscillate repeatedly during the rotation of the mounting side plates 203, thereby timely shaking off the solid impurities on the surface of the lifting plate 206, making the collection effect of the collecting pipe 201 on solid impurities better. During the filtration process of the wastewater by the filter cylinder 204, since the filter cylinder 204 is in a rotating state, the filter holes on the filter cylinder 204 can remain unobstructed for a long time. If the filter cylinder 204 has been used for a long time and becomes blocked, in order to maintain the filtering effect of the filter cylinder 204, at this time, the user can rotate the control rod 301 located on the side of the separation tank 1. At this time, the pushing rods 303 provided at both ends of the control rod 301 will push the corresponding lifting blocks 304 towards the bottom until the transmission gears 306 at both ends of the cleaning brush 302 are engaged with the tooth grooves 210 on the mounting side plates 203.At this time, installing the side plate 203 will drive the cleaning brush 302 to rotate. The long bristles arranged 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 dredging effect, thereby maintaining the filtering ability of the filter cartridge 204. After the dredging is completed, release the control rod 301. Under the push of the first spring 305, the lifting plate can lift the cleaning brush 302 and separate it from the surface of the filter cartridge 204. At the same time, a clamping rod 307 is provided at the end of the control rod 301. By engaging the clamping rod 307 with the two clamping slots 309, the position of the cleaning brush 302 can be fixed to maintain the dredging state of the cleaning brush 302 for the filter cartridge 204, which is convenient for operation. Fine-grained sediment will accumulate on the bottom side of the separation tank 1 after a long time of wastewater treatment. To facilitate the cleaning of the inside of the separation tank 1, a bottom plate 501 that can be rotated and opened is provided on the bottom side of the separation tank 1. The bottom plate 501 ensures the sealing performance of the bottom of the separation tank 1 through the sealing ring 502. When cleaning the inside of the separation tank 1, the user only needs to rotate the fastening screw 506 and remove 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 grooves 504 to limit the rotation angle of the bottom plate 501, which is convenient for the operator to clean the sludge on the surface of the bottom plate 501 and the inner side of the separation tank 1. After the preliminary filtration of the wastewater is completed through the separation tank 1, there will still be oil in the wastewater that cannot be separated by filtration. At this time, the filtered wastewater in the separation tank 1 is discharged into the sedimentation tank 401 through the water delivery pipe 402. After the wastewater enters the sedimentation tank 401, it will first be blocked by the closing plate. The closing plate can prevent the wastewater containing oil from directly entering the other side of the first partition plate 403. As the water level in the sedimentation tank 401 rises, the first floating block 406 floats up and drives the closing plate to lift, and the wastewater begins to enter between the two first partition plates 403. A second partition plate 404 is provided between the two first partition plates 403. There is a gap between the bottom side of the first partition plate 403 and the bottom of the sedimentation tank 401. The wastewater will be discharged to the other side of the first partition plate 403 only when the liquid level of the wastewater reaches the top side of the second partition plate 404. With the continuous injection of wastewater, most of the oil will be blocked on one side of the two first partition plates 403. At the same time, through the setting of the first partition plate 403 and the second partition plate 404, the disturbance of the water body on one side of the first partition plate 403 towards the other side is effectively reduced, the sedimentation effect of the wastewater in the sedimentation tank 401 is improved, and the interference of various impurities on the subsequent chemical treatment of the wastewater is reduced. Through the setting of the first partition plate 403 and the second partition plate 404, when the sedimentation tank 401 is filled with wastewater, the oil in the wastewater will be concentrated on the side of the first partition plate 403 close to the water delivery pipe 402. An installation plate 601 is provided on the sedimentation tank 401. A second floating block 605 is provided on the installation plate 601. The user can rotate the adjusting rod 603 to adjust the relative position between the second floating block 605 and the installation plate 601.The buoyancy provided by the second floating block 605 can exactly make the upper surface of the mounting plate 601 located at the oil-liquid interface position of the wastewater. Mesh plates 602 are provided on both sides of the mounting plate 601. The setting of the mesh plates 602 can reduce the shaking of the liquid level. At the same time, an oil suction pipe 604 for sucking oil quality is provided on the mounting plate 601. The end of the oil suction pipe 604 is located on the upper surface of the mounting plate 601. By continuously sucking through the oil suction pipe 604, the oil quality on the surface of the wastewater can be separated out.

[0052] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0053] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard 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 a thermal power plant, characterized in that, It includes a separation tank (1), and a screening structure (2) is provided inside the separation tank (1); 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 connection block (207) is fixedly connected to the middle of the collection pipe (201). An installation side plate (203) is rotatably connected between the connection 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 inside of the collection pipe (201). The end of the spiral feeding rod (205) penetrates through the installation side plate (203) and is rotatably connected to the side of the separation tank (1). A plurality of lifting plates (206) are fixedly connected to the inside of the installation side plate (203) in a ring shape. The side of the lifting plate (206) abuts against the inner side of the filter cylinder (204).

2. The wastewater treatment device for a thermal power plant according to claim 1, characterized in that: A water inlet pipe (202) is fixedly connected to the side of the separation tank (1). The end of the water inlet pipe (202) penetrates through the connection 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. A tooth groove (210) is formed on the side of the installation side plate (203). A driving tooth bar (212) is rotatably connected to the inside of the separation tank (1). The two ends of the driving tooth bar (212) are respectively engaged with the two sides of the installation side plate (203) through the tooth groove (210). A second belt pulley (211) is fixedly connected to the end of the driving tooth bar (212). A first belt pulley (208) is fixedly connected to the end of the spiral feeding rod (205). A transmission belt (209) is sleeved between the first belt pulley (208) and the second belt pulley (211).

3. A wastewater treatment device for a thermal power plant according to claim 1, characterized in that: An oscillation structure (7) is connected between the screening structure (2) and the separation tank (1). The oscillation structure (7) includes a torsion spring (702). The two ends of the lifting plate (206) are respectively rotatably connected to the installation side plate (203). A torsion spring (702) is fixedly connected between the end of the lifting plate (206) and the installation 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 formed on the side of the installation side plate (203). The side of the deflection block (703) is slidably connected to the installation side plate (203) through the second limiting groove (706) with an arc - shaped structure.

4. The wastewater treatment device for a thermal power plant according to claim 3, characterized in that: A contact block (704) is slidably connected to the side of the deflection block (703) away from the installation side plate (203). A third spring (705) is fixedly connected between the contact block (704) and the deflection block (703). A plurality of oscillation grooves (701) are formed on the side of the separation tank (1). The oscillation grooves (701) have a strip - shaped structure, and a plurality of the oscillation grooves (701) are arranged in a ring shape. The end of the contact block (704) has a hemispherical structure. The spherical end of the contact block (704) abuts against the inner wall of the separation tank (1) through the oscillation groove (701).

5. A wastewater treatment device for a thermal power plant according to claim 1, characterized in that: A dredging structure (3) is provided on the top side of the screening structure (2). The dredging structure (3) includes a cleaning brush (302). A cleaning brush (302) is provided on the top side of the filter cartridge (204). 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). A first spring (305) is fixedly connected between the lifting block (304) and the separation tank (1).

6. The wastewater treatment device for a thermal power plant according to claim 5, characterized in that: 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 surface of the pushing rod (303) is slidably connected to the top side of the lifting block (304) arranged on the same side. A clamping rod (307) is slidably connected to the end of the control rod (301). A second spring (308) is fixedly connected between the clamping rod (307) and the control rod (301). A clamping groove (309) is formed on the side surface of the separation tank (1). The end of the clamping rod (307) is engaged with the separation tank (1) through the clamping groove (309).

7. An industrial wastewater treatment device according to claim 1, characterized in that: A cleaning structure (5) is provided on the bottom side of the separation tank (1). The cleaning structure (5) includes a bottom plate (501). The bottom plate (501) is rotatably connected to the bottom side of the separation tank (1). A sealing ring (502) is fixedly connected to the bottom side of the separation tank (1). The bottom 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 bottom plate (501). A guiding groove (504) is formed inside the separation tank (1). The end of the traction rod (503) is slidably connected to the separation tank (1) through the guiding groove (504). A rotating block (505) is rotatably connected to the end of the bottom plate (501). A fastening screw (506) is threadedly connected to the middle of the rotating block (505). A fixing groove (507) is formed on the side surface of the separation tank (1). The end of the fastening screw (506) abuts against the separation tank (1) through the fixing groove (507).

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

9. The wastewater treatment device for a thermal power plant according to claim 8, wherein: A first limiting groove (407) is formed inside the sedimentation tank (401). A sealing plate (405) is slidably connected to the sedimentation tank (401) through the first limiting groove (407). A first floating block (406) is fixedly connected to the side surface of the sealing plate (405).

10. A wastewater treatment device for a thermal power plant according to claim 8, characterized in that: Inside the precipitation structure (4), there is a suction structure (6). 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 with a mounting plate (601) through the chute (606). One net plate (602) is fixedly connected to each of the two sides of the mounting plate (601). A regulating rod (603) is rotatably connected to the middle of the mounting plate (601). A second floating block (605) is threadedly connected to the regulating rod (603). The two ends of the second floating block (605) are respectively 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 arranged on the top side of the mounting plate (601).

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