Integrated device for multi-stage mechanical separation of electric power sewage

Abstract

The present application relates to the technical field of electric power sewage treatment, and discloses a multi-stage mechanical separation integrated treatment device for electric power sewage, wherein a middle rotating assembly is arranged centrally in a separation tank assembly, and the top of the middle rotating assembly extends into a sewage inlet end cover assembly fixed on the top of the separation tank assembly; an upper filter cylinder assembly is arranged in the upper portion of the separation tank assembly, a lower filter assembly is arranged in the lower portion of the separation tank assembly, and the bottom of the middle rotating assembly penetrates through the upper filter cylinder assembly and extends into the lower filter assembly; the present application adopts multi-stage mechanical separation to improve the treatment efficiency, and centrifugal filtration + spiral extrusion: the upper filter cylinder separates impurity particles through centrifugal force, and the spiral blades of the lower filter cone further extrude impurities, so that the solid content of the filtrate is further reduced. Cyclone mixing intensification: the three-dimensional stirring cooperation of the tangential water inlet, the side edge scraper stirring assembly and the middle lifting stirring assembly forms a three-dimensional cyclone field, the sewage and the medicine are uniformly mixed, the utilization rate of the medicine is improved, and the medicine addition amount is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of power sewage treatment, and in particular to a multi-stage mechanical separation integrated treatment device for power sewage. Background Art

[0002] In the power industry, wastewater typically contains large amounts of suspended solids (such as fly ash and metal debris), grease, and colloidal impurities. Traditional treatment processes suffer from the following core issues: 1. Low separation efficiency, unable to meet multi-stage treatment requirements: Traditional separation equipment (such as gravity settling tanks and single filter tanks) only achieves single-stage solid-liquid separation, with poor separation efficiency for particles <0.5mm and emulsified oil. For example, a gravity settling tank has a removal rate of approximately 60% for particles ≥1mm, but less than 30% for particles 0.1-1mm. This results in a high subsequent treatment load and difficulty meeting effluent quality standards (e.g., suspended solids (SS) >100mg / L). 2. Low equipment integration and large footprint: Traditional processes utilize a discrete "sedimentation-filtration-flotation" module, with dispersed equipment layout, occupying 30-50m² of floor space, making them difficult to adapt to the compact layout requirements of power plants. 3. Poor mixing effect and low chemical utilization: Traditional mixing methods (such as paddle mixing) can only achieve horizontal mixing, with blind spots in the vertical direction. The uniformity of chemical and wastewater mixing is less than 70%, resulting in a 20%-30% increase in chemical dosage and increased treatment costs. To address this, we have launched an integrated multi-stage mechanical separation treatment device for power wastewater. Summary of the Invention

[0003] The object of the present invention is to provide a multi-stage mechanical separation integrated treatment device for power sewage to solve the problems raised in the above background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solutions: a multi-stage mechanical separation and integrated treatment device for electric power sewage, comprising a separation tank assembly, wherein an intermediate rotating assembly is centrally disposed within the separation tank assembly, and the top of the intermediate rotating assembly extends into a sewage inlet end cover assembly fixed at the top of the separation tank assembly;

[0005] The upper part of the separation tank assembly is provided with an upper filter cartridge assembly, the lower part of the separation tank assembly is provided with a lower filter assembly, and the bottom of the intermediate rotating assembly passes through the upper filter cartridge assembly and extends into the lower filter assembly;

[0006] The upper part of the separation tank assembly is further provided with a side scraper stirring assembly, the interior of the upper filter cylinder assembly is centrally provided with an intermediate lifting stirring assembly, and several groups of side scraper stirring assemblies are evenly spaced and distributed between the intermediate lifting stirring assembly and the upper filter cylinder assembly;

[0007] After the sewage enters the sewage inlet end cover assembly and impacts the top of the intermediate rotating assembly, it drives the intermediate rotating assembly to rotate. The intermediate rotating assembly drives the upper filter cartridge assembly and the side scraper stirring assembly to rotate, and also drives the intermediate lifting stirring assembly to move up and down reciprocatingly;

[0008] When the upper filter cartridge assembly rotates, the leakage assembly at the bottom of the upper filter cartridge assembly periodically contacts the arc-shaped groove at the top of the lower filter assembly to achieve periodic opening and closing of the leakage assembly, thereby achieving periodic sewage discharge from the upper filter cartridge assembly to the lower filter assembly.

[0009] Preferably, the sewage inlet end cover assembly includes an inlet end cover, a sewage inlet pipe connected to the side of the inlet end cover, and an upper flange ring provided on the outer side of the lower end of the inlet end cover;

[0010] The separation tank assembly includes a separation tank body and a lower flange ring on the outer side of the upper end of the separation tank body. The upper flange ring is fixed to the top of the lower flange ring by bolts.

[0011] Preferably, an upper conical ring seat is provided on the inner side of the upper end of the separation tank body, and a limiting cylinder with a support plate fixed in the center is adopted inside the upper conical ring seat;

[0012] The intermediate rotating assembly includes an intermediate rotating shaft sleeved in a limiting cylinder, a driving gear fixed in sequence on the upper portion of the intermediate rotating shaft, and a plurality of impact baffles distributed at equal intervals;

[0013] Two sets of bearings are embedded in the connecting cylinder at the middle bottom of the water inlet end cover, and the two sets of bearings are sleeved on the top of the middle rotating shaft;

[0014] The bottom of the end of the impact baffle is provided with an inclined seat facing the upper part of the upper conical ring seat, and the bottom of the inclined seat is provided with a cleaning brush.

[0015] Preferably, the side scraper stirring assembly includes a side rotating shaft penetrating the support plate, a driven gear fixed on the top of the side rotating shaft, and a rubber plate fixed on the side of the side rotating shaft;

[0016] The driven gear is meshed with the side of the driving gear.

[0017] Preferably, the upper filter cartridge assembly includes an upper filter cartridge and a round table seat provided on the bottom wall of the middle portion of the upper filter cartridge, and the bottom of the upper filter cartridge is seated on the top of the lower filter assembly;

[0018] The central part of the pedestal seat is provided with a plug-in hole, the bottom of the plug-in hole is provided with a card slot, the bottom of the intermediate rotating shaft is inserted into the plug-in hole, and the card block at the bottom of the intermediate rotating shaft is inserted into the card slot;

[0019] The interior of the separation tank body is provided with an upper inner cavity and a lower inner cavity from top to bottom. The inner diameter of the lower inner cavity is larger than that of the upper inner cavity. A limiting ring seat located below the upper conical ring seat is fixed on the inner side of the upper end of the upper inner cavity. The limiting ring seat is sleeved on the outer side of the upper part of the upper filter cylinder.

[0020] The intermediate lifting and stirring assembly includes an intermediate lifting hollow cylinder, a horizontal plate provided on the inner wall of the intermediate lifting hollow cylinder, and a U-shaped connecting seat fixed on the upper inner wall of the intermediate lifting hollow cylinder;

[0021] A vertical limit plate is fixed to the lower end of the support plate, and the vertical limit plate is inserted into the corresponding vertical limit groove on the inner wall of the middle lifting hollow cylinder;

[0022] The intermediate rotating shaft is also fixed with an inclined plate located below the driving gear, and the U-shaped connecting seat is clamped on the side of the inclined plate.

[0023] Preferably, the lower filter assembly includes a docking tube extending into the upper inner cavity and supported on the bottom of the upper filter tube, a sealing ring seat provided on the outer side of the bottom of the docking tube, and a lower filter cone centrally connected to the bottom of the docking tube;

[0024] A lower annular groove is provided on the outer side of the upper end of the docking cylinder, an upper annular groove is provided on the outer side of the bottom of the upper filter cylinder, and an annular sealing gasket is provided between the lower annular groove and the upper annular groove;

[0025] A lower rotating rod is fixed in the center of the bottom of the intermediate rotating shaft, the lower rotating rod extends into the lower filter cone, and a spiral blade is provided on the lower rotating rod;

[0026] The sewage discharge pipe at the bottom of the lower filter cone extends through the middle of the bottom sealing cover, and the bottom sealing cover is sleeved on the outer side of the bottom of the separation tank body.

[0027] Preferably, an annular conical slope is provided on the inner side of the upper end of the docking sleeve, and the arc-shaped groove is provided on the annular conical slope;

[0028] The bottom of the upper filter cartridge is provided with a receiving groove, and the inner side of the top of the receiving groove is provided with a leakage groove connected with the interior of the upper filter cartridge;

[0029] The leakage assembly includes a rotating drum movably connected to the inside and outside of the receiving tank by a pin shaft, a sealing plate fixed to the bottom of the rotating drum, a tension spring fixed to the top wall of the receiving tank on the outer side of the upper end of the sealing plate, and a contact ball connected to the center of the outer side of the lower end of the sealing plate by a push rod;

[0030] The contact ball contacts the surface of the annular conical slope.

[0031] Compared with the prior art, the beneficial effects of the present application are: the present application adopts multi-stage mechanical separation, improves the processing efficiency, and centrifugal filtration + spiral extrusion: the upper filter cylinder separates impurity particles through centrifugal force, and the spiral blade of the lower filter cone further extrudes impurities, so that the solid content of the filtrate is further reduced.

[0032] Rotational flow mixing reinforcement: tangential water inlet (tangent connection of sewage inlet pipe) and three-dimensional stirring cooperation of side scraper stirring assembly and middle lifting stirring assembly form a three-dimensional rotational flow field, sewage and drugs are uniformly mixed, drug utilization rate is improved, and drug dosage is reduced.

[0033] Compact structure design: the separation tank assembly integrates coarse filtration, stirring, fine filtration and pollution discharge functions, and has small floor area. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is an exploded view of the overall assembly of the present application;

[0035] Figure 2 It is a sectional view of the sewage inlet end cover assembly of the present application;

[0036] Figure 3 It is a three-dimensional structure diagram of the middle rotating assembly of the present application;

[0037] Figure 4 It is a sectional view of the middle rotating assembly of the present application;

[0038] Figure 5 It is a first side sectional view of the separation tank assembly of the present application;

[0039] Figure 6 It is a second side sectional view of the separation tank assembly of the present application;

[0040] Figure 7 It is a three-dimensional structure diagram of the upper filter cylinder assembly of the present application;

[0041] Figure 8 It is a sectional view of the upper filter cylinder assembly of the present application;

[0042] Figure 9 It is a three-dimensional structure diagram of the material leakage assembly of the present application;

[0043] Figure 10 It is a sectional view of the material leakage assembly and the upper filter cylinder assembly of the present application;

[0044] Figure 11 It is a three-dimensional structure diagram of the middle lifting stirring assembly of the present application;

[0045] Figure 12 This is a schematic diagram of the structure of the annular sealing gasket installed in the present invention;

[0046] Figure 13 Schematic diagram of the cross-sectional structure of the lower filter assembly of the present invention;

[0047] Figure 14 This is a structural schematic diagram of the middle lifting and stirring assembly of the present invention at the highest position;

[0048] Figure 15 This is a structural schematic diagram of the intermediate lifting and stirring assembly of the present invention at the lowest position;

[0049] Figure 16 This is a structural diagram of the connection between the intermediate lifting and stirring assembly and the vertical limiting plate of the present invention;

[0050] Figure 17 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0051] Figure 18 It is a schematic cross-sectional structural diagram of the present invention as a whole;

[0052] Figure 19 This is a schematic cross-sectional view of the sealing plate of the present invention sealing the leakage groove;

[0053] Figure 20 This is a schematic cross-sectional structural diagram of the sealing plate of the present invention when the leakage groove leaks out.

[0054] In the picture:

[0055] 1. Bolts;

[0056] 2. Sewage inlet cover assembly; 201. Inlet cover; 202. Upper flange ring; 203. Sewage inlet pipe; 204. Connecting tube; 205. Bearing;

[0057] 3. Intermediate rotating assembly; 301. Intermediate rotating shaft; 302. Clamping block; 303. Lower rotating rod; 304. Spiral blade; 305. Inclined plate; 306. Driving gear; 307. Impact baffle; 308. Inclined seat; 309. Cleaning brush;

[0058] 4. Separator assembly; 401. Separator body; 402. Lower flange ring; 403. Upper conical ring seat; 404. Driven gear; 405. Support plate; 406. Limiting cylinder; 407. Vertical limiting plate; 408. Lower inner cavity; 409. Upper inner cavity; 410. Side shaft; 411. Limiting ring seat; 412. Upper drain pipe; 413. Lower drain pipe; 414. Rubber sheet;

[0059] 5. Upper filter cartridge assembly; 501. Upper filter cartridge; 502. Round pedestal seat; 503. Connecting hole; 504. Leakage groove; 505. Clamping slot; 506. Upper annular groove; 507. Receiving groove; 508. Sealing plate; 509. Rotating drum; 510. Pin; 511. Ejector rod; 512. Contact ball; 513. Tension spring;

[0060] 6. Middle lifting stirring assembly; 601. Middle lifting hollow cylinder; 602. Vertical limit groove; 603. Horizontal plate; 604. U-shaped connecting seat;

[0061] 7. Lower filter assembly; 701. Bottom sealing cover; 702. Support legs; 703. Lower filter cone; 704. Docking tube; 705. Sealing ring seat; 706. Annular conical slope; 707. Arc-shaped groove; 708. Lower annular groove; 709. Drain pipe; 710. Annular sealing gasket. DETAILED DESCRIPTION

[0062] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0063] Example:

[0064] See also Figure 1-20 , the present invention provides a technical solution:

[0065] A multi-stage mechanical separation integrated treatment device for electric power sewage, comprising a separation tank assembly 4, wherein an intermediate rotating assembly 3 is centrally disposed inside the separation tank assembly 4, and the top of the intermediate rotating assembly 3 extends into a sewage inlet end cover assembly 2 fixed to the top of the separation tank assembly 4;

[0066] The sewage inlet end cover assembly 2 includes an inlet end cover 201, a sewage inlet pipe 203 connected to the side of the inlet end cover 201, and an upper flange ring 202 provided on the outer side of the lower end of the inlet end cover 201;

[0067] The axis of the sewage inlet pipe 203 is connected tangentially to the surface of the water inlet cover 201. That is, the centerline of the sewage inlet pipe 203 coincides with a tangent to the surface of the water inlet cover 201 at the connection point. This allows sewage, when introduced into the water inlet cover 201 via the sewage inlet pipe 203, to directly impact the impact baffle 307, thereby driving the intermediate rotating assembly 3 to rotate. By utilizing the sewage's own kinetic energy to propel the intermediate rotating assembly 3, no additional power source is required, reducing energy consumption.

[0068] The sewage inlet pipe 203 is tangentially connected to the water inlet end cover 201 , and sewage flows in at a high speed in the tangential direction (flow velocity v ≥ 2m / s), forming a circumferential vortex in the water inlet end cover 201 , and its motion trajectory is a spiral line around the intermediate rotating shaft 301 .

[0069] effect:

[0070] Premixing: Circumferential swirl allows for preliminary mixing of wastewater and reagents, forming a uniform initial concentration gradient.

[0071] Kinetic energy transfer: The swirl impacts the baffle 307, driving the intermediate rotating component 3 to rotate, providing power for subsequent stirring.

[0072] The separation tank assembly 4 includes a separation tank body 401 and a lower flange ring 402 on the outer side of the upper end of the separation tank body 401 . The upper flange ring 202 is fixed to the top of the lower flange ring 402 by bolts 1 .

[0073] An upper conical ring seat 403 is provided on the inner side of the upper end of the separation tank body 401. The inner diameter of the upper conical ring seat 403 gradually decreases from top to bottom, and the inner diameter of the upper filter cartridge 501 is larger than the inner diameter of the bottom of the upper conical ring seat 403. In this way, the sewage entering the water inlet end cover 201 can fall along the upper conical ring seat 403 into the upper filter cartridge 501.

[0074] The upper conical ring seat 403 has a limiting cylinder 406 fixed in the center by a support plate 405;

[0075] The intermediate rotating assembly 3 includes an intermediate rotating shaft 301 sleeved in a limiting cylinder 406, a driving gear 306 fixed on the upper portion of the intermediate rotating shaft 301, and a plurality of impact baffles 307 distributed at equal intervals.

[0076] When sewage is introduced into the water inlet end cover 201 through the sewage inlet pipe 203 , the sewage directly impacts the impact baffle 307 , thereby driving the intermediate rotating assembly 3 to rotate.

[0077] Alternatively, the top of the intermediate rotating shaft 301 extends out of the water inlet end cover 201 and is connected to the output of the servo motor on the top of the water inlet end cover 201. In this way, the servo motor can drive the intermediate rotating assembly 3 to rotate through the intermediate rotating shaft 301. The optional servo motor drive adapts to low sewage flow conditions and ensures the stability of equipment operation.

[0078] Two sets of bearings 205 are embedded in the connecting tube 204 at the middle bottom of the water inlet end cover 201. The two sets of bearings 205 are sleeved on the top of the intermediate rotating shaft 301 and combined with the limiting tube 406, they are sleeved on the outside of the intermediate rotating shaft 301 to achieve a stable connection to the intermediate rotating shaft 301, making the rotation of the intermediate rotating shaft 301 smoother.

[0079] At the bottom end of the impact baffle 307, there is an inclined seat 308 facing the upper part of the upper conical ring seat 403. A cleaning brush 309 is installed at the bottom of the inclined seat 308. As the intermediate rotating assembly 3 rotates, the cleaning brush 309 at the bottom of the inclined seat 308 cleans the surface of the upper conical ring seat 403, preventing sewage impurities from accumulating on the surface of the upper conical ring seat 403 and sweeping the sewage impurities accumulated on the surface of the upper conical ring seat 403 into the upper filter cartridge 501.

[0080] An upper filter cartridge assembly 5 is provided in the upper portion of the separation tank assembly 4;

[0081] The upper filter cartridge assembly 5 includes an upper filter cartridge 501 and a truncated pedestal 502 provided on the bottom wall of the middle portion of the upper filter cartridge 501. The bottom of the upper filter cartridge 501 is seated on the top of the lower filter assembly 7.

[0082] A plug-in hole 503 is provided in the middle of the pedestal seat 502, and a card slot 505 is provided at the bottom of the plug-in hole 503. The bottom of the intermediate rotating shaft 301 is inserted into the plug-in hole 503, and the card block 302 at the bottom of the intermediate rotating shaft 301 is snapped into the card slot 505; in this way, the rotation of the intermediate rotating shaft 301 of the intermediate rotating assembly 3 can drive the upper filter cartridge 501 to rotate as well, so that under the action of the centrifugal force after the upper filter cartridge 501 rotates, the sewage in the upper filter cartridge 501 is filtered and separated by the upper filter cartridge 501 and then enters the upper inner cavity 409, and the remaining impurities in the sewage continue to remain in the upper filter cartridge 501.

[0083] The interior of the separation tank 401 is sequentially arranged from top to bottom with an upper inner cavity 409 and a lower inner cavity 408. The inner diameter of the lower inner cavity 408 is larger than that of the upper inner cavity 409. A retaining ring seat 411 is fixedly mounted on the inner side of the upper end of the upper inner cavity 409, located below the upper conical ring seat 403. The retaining ring seat 411 fits over the upper outer portion of the upper filter cartridge 501. This ensures that the upper filter cartridge 501 is positioned correctly, preventing it from shaking during rotation and ensuring smoother rotation.

[0084] A lower filter assembly 7 is provided in the lower portion of the separation tank assembly 4, and the bottom of the intermediate rotating assembly 3 passes through the upper filter cartridge assembly 5 and extends into the lower filter assembly 7;

[0085] The lower filter assembly 7 includes a docking tube 704 extending into the upper inner cavity 409 and supported on the bottom of the upper filter cartridge 501, a sealing ring seat 705 provided on the outer side of the bottom of the docking tube 704, and a lower filter cone 703 centrally connected to the bottom of the docking tube 704; the lower filter cone 703 is arranged to be wide at the top and narrow at the bottom, and the sewage impurities in the upper filter cartridge 501 fall into the lower filter cone 703 and gradually accumulate, and the sewage in the accumulated impurities will enter the lower inner cavity 408 after being filtered and separated by the lower filter cone 703.

[0086] A lower annular groove 708 is provided on the outer side of the upper end of the docking cylinder 704, and an upper annular groove 506 is provided on the outer side of the bottom of the upper filter cylinder 501. An annular sealing gasket 710 is provided between the lower annular groove 708 and the upper annular groove 506. In this way, after the bottom of the upper filter cylinder 501 is seated on the top of the docking cylinder 704 to form a support for the upper filter cylinder 501, the annular sealing gasket 710 can be used to achieve sealing between the bottom of the upper filter cylinder 501 and the top of the docking cylinder 704, and at the same time, it will not interfere with the rotation of the upper filter cylinder 501 relative to the docking cylinder 704.

[0087] A lower rotating rod 303 is fixed in the center of the bottom of the middle rotating shaft 301, and the lower rotating rod 303 extends into the lower filter cone 703, and a spiral blade 304 is provided on the lower rotating rod 303; the spiral blade 304 rotates in the lower filter cone 703 under the drive of the lower rotating rod 303, and can stir the impurities accumulated in the lower filter cone 703 and squeeze them downward, so that the accumulated impurities are more easily filtered and separated from the sewage and enter the lower inner cavity 408. At this time, the valve on the sewage pipe 709 needs to be in a closed state.

[0088] The sewage pipe 709 at the bottom of the lower filter cone 703 extends through the middle of the bottom sealing cover 701 , and the bottom sealing cover 701 is sleeved on the outer side of the bottom of the separation tank body 401 .

[0089] When the impurities in the lower filter cone 703 need to be discharged, it is only necessary to open the valve on the sewage pipe 709. At this time, the spiral blades 304 squeeze and transport the impurities downward, so that the impurities can be discharged smoothly through the sewage pipe 709.

[0090] A side scraper stirring assembly is also provided in the upper part of the separation tank assembly 4;

[0091] The side scraper stirring assembly includes a side shaft 410 passing through the support plate 405 , a driven gear 404 fixed to the top of the side shaft 410 , and a rubber plate 414 fixed to the side of the side shaft 410 . The driven gear 404 is engaged with the side of the driving gear 306 .

[0092] In this way, when the intermediate rotating assembly 3 rotates, the driving gear 306 thereon can drive the driven gear 404 to rotate, and then the driven gear 404 drives the rubber plate 414 to rotate through the side rotating shaft 410, stirring the sewage entering the upper filter cartridge assembly 5, so that the medicine and sewage are fully mixed.

[0093] An intermediate lifting and stirring assembly 6 is centrally provided inside the upper filter cartridge assembly 5;

[0094] The intermediate lifting and stirring assembly 6 includes an intermediate lifting hollow cylinder 601, a horizontal plate 603 provided on the inner wall of the intermediate lifting hollow cylinder 601, and a U-shaped connecting seat 604 fixed on the upper inner wall of the intermediate lifting hollow cylinder 601;

[0095] A vertical stop plate 407 is fixed to the lower end of the support plate 405. This stop plate 407 inserts into a corresponding vertical stop groove 602 on the inner wall of the intermediate lifting hollow cylinder 601. This stop plate 407 and the vertical stop groove 602 form a sliding pair, forcing the intermediate lifting hollow cylinder 601 to move only in a vertical direction, preventing radial deviation or shaking during rotation. This ensures the coaxiality of the intermediate lifting hollow cylinder 601 and the upper filter cylinder 501, preventing collision and friction between the two and extending the life of the equipment.

[0096] A tilting plate 305 located below the driving gear 306 is also fixed on the intermediate rotating shaft 301 , and a U-shaped connecting seat 604 is clamped on the side of the tilting plate 305 .

[0097] When the middle rotating shaft 301 rotates, it drives the inclined plate 305 on it to rotate as well. At this time, since the U-shaped connecting seat 604 is stuck on the side of the inclined plate 305, the rotation of the inclined plate 305 drives the U-shaped connecting seat 604 to move up and down, thereby driving the middle lifting hollow cylinder 601 to move up and down.

[0098] When the middle lifting hollow cylinder 601 moves up and down, the horizontal plate 603 on the inner wall of the middle lifting hollow cylinder 601 stirs the sewage inside the middle lifting hollow cylinder 601, and after driving the sewage inside the middle lifting hollow cylinder 601 upward, the sewage at the bottom between the upper filter cylinder 501 and the middle lifting hollow cylinder 601 flows back from the bottom to fill the middle lifting hollow cylinder 601, and the sewage on the upper part of the middle lifting hollow cylinder 601 then flows downward into between the upper filter cylinder 501 and the middle lifting hollow cylinder 601, which can improve the stirring efficiency of the sewage and allow the medicine and sewage to be fully mixed.

[0099] Axial convection (vertical direction) of horizontal plate 603:

[0100] Formation mechanism: The middle lifting hollow cylinder 601 reciprocates up and down, and the internal horizontal plate 603 pushes the fluid to flip up and down, forming axial convection.

[0101] effect:

[0102] The "laminar" state of the horizontal vortex is broken, and an axial velocity gradient is generated in the vertical direction, so that the upper fluid and the lower fluid can be fully exchanged.

[0103] Suction-push cycle: When the horizontal plate 603 rises, it sucks the bottom fluid, and when it descends, it pushes the top fluid, forming a "vertical circulation" and enhancing vertical mixing.

[0104] Several groups of side scraper stirring assemblies are evenly spaced between the middle lifting stirring assembly 6 and the upper filter cylinder assembly 5, that is, the rubber plate 414 is close to the inner wall of the upper filter cylinder 501 and the outer wall of the middle lifting hollow cylinder 601. When the rubber plate 414 rotates to stir the sewage in the upper filter cylinder 501, it can also clean the inner wall of the upper filter cylinder 501 and the outer wall of the middle lifting hollow cylinder 601 to prevent the side walls of the upper filter cylinder 501 and the middle lifting hollow cylinder 601 from being blocked.

[0105] Radial shear flow (horizontal direction) of rubber sheet 414:

[0106] Formation mechanism: The rubber plate 414 of the side scraper stirring assembly rotates against the inner wall of the upper filter cartridge 501, generating radial shear force, pushing the fluid close to the cartridge wall toward the center area.

[0107] Function: Breaks the rigid rotation of the circumferential vortex, creates a radial velocity gradient in the horizontal direction (low velocity at the center, high velocity at the edges), and promotes lateral mixing of fluid microclusters. Cylinder wall cleaning: Rubber sheet 414 scrapes away impurities adhering to the cylinder wall to prevent localized concentration anomalies.

[0108] After the sewage enters the sewage inlet end cover assembly 2 and hits the top of the intermediate rotating assembly 3, it drives the intermediate rotating assembly 3 to rotate. The intermediate rotating assembly 3 drives the upper filter cartridge assembly 5 and the side scraper stirring assembly to rotate, and also drives the intermediate lifting stirring assembly 6 to move up and down.

[0109] When the upper filter cartridge assembly 5 rotates, the leakage assembly at the bottom of the upper filter cartridge assembly 5 periodically contacts the arc-shaped groove 707 at the top of the lower filter assembly 7, thereby realizing the periodic opening and closing of the leakage assembly, so as to realize the periodic discharge of sewage from the upper filter cartridge assembly 5 into the lower filter assembly 7.

[0110] A support leg 702 is provided at the bottom of the bottom sealing cover 701, and an upper drainage pipe 412 and a lower drainage pipe 413 are respectively provided on the sides of the separation tank body 401. The upper drainage pipe 412 is connected to the bottom of the upper inner cavity 409, and the lower drainage pipe 413 is connected to the bottom of the lower inner cavity 408, and the lower drainage pipe 413 extends through the side of the bottom sealing cover 701.

[0111] An annular conical slope 706 is provided on the inner side of the upper end of the docking tube 704. The inner diameter of the annular conical slope 706 gradually decreases from top to bottom. An arc-shaped groove 707 is provided on the annular conical slope 706.

[0112] The bottom of the upper filter cartridge 501 is provided with a receiving groove 507, and the inner side of the top of the receiving groove 507 is provided with a leakage groove 504 that communicates with the interior of the upper filter cartridge 501;

[0113] The material leakage assembly includes a rotating drum 509 movably connected to the inside and outside of the receiving groove 507 by a pin 510, a sealing plate 508 fixed to the bottom of the rotating drum 509, a tension spring 513 fixed to the top wall of the receiving groove 507 at the outer side of the upper end of the sealing plate 508, and a contact ball 512 centered on the outer side of the lower end of the sealing plate 508 and connected by a push rod 511.

[0114] The contact ball 512 is in surface contact with the annular conical slope 706 .

[0115] like Figure 19 As shown, in the initial state, the contact ball 512 contacts the surface of the annular conical slope 706, so that the contact ball 512 causes the inner side of the sealing plate 508 to rotate upward with the pin 510 as the center through the push rod 511, and the inner side of the sealing plate 508 seals the bottom of the leakage groove 504. At this time, the tension spring 513 is in a stretched state.

[0116] Subsequently, when the upper filter cartridge 501 rotates so that the contact ball 512 moves to the arc-shaped groove 707, the inner side of the sealing plate 508 rotates downward with the pin 510 as the center under the pulling force of the tension spring 513 on the outer side of the sealing plate 508, and the inner side of the sealing plate 508 leaks out of the bottom of the groove 504 until the contact ball 512 abuts against the surface of the arc-shaped groove 707 (as shown in FIG. Figure 20 As shown), at this time, the impurities in the upper filter cartridge 501 can fall into the lower filter cone 703 through the leakage groove 504.

[0117] As the upper filter cartridge 501 continues to rotate, the contact ball 512 slides out of the arc-shaped groove 707 to the surface of the annular conical slope 706, and the inner side of the sealing plate 508 will again seal the bottom of the leakage groove 504. In this way, as the upper filter cartridge 501 rotates, the leakage component can periodically open and close the leakage groove 504, so that the impurities in the upper filter cartridge 501 can be periodically discharged into the lower filter cone 703.

[0118] Specifically, when using:

[0119] Sewage input and initial drive:

[0120] Tangential water impact: After the sewage is dosed with chemicals, it is introduced into the sewage inlet pipe 203 using a sewage pump. The sewage flows through the sewage inlet pipe 203 (tangential to the surface of the inlet cover 201) at high speed into the inlet cover 201, impacting the impact baffle 307 at the top of the intermediate rotating assembly 3. The kinetic energy of the water propels the intermediate rotating shaft 301. This utilizes the sewage's own kinetic energy to propel the intermediate rotating assembly 3, eliminating the need for an additional power source and reducing energy consumption.

[0121] Initial separation guide: The sewage is accelerated to fall through the upper conical ring seat 403 (with a larger inner diameter at the top and a smaller inner diameter at the bottom) to the upper filter cartridge 501. At the same time, the cleaning brush 309 rotates with the intermediate rotating component 3 to clean impurities on the surface of the upper conical ring seat 403 to prevent accumulation and blockage.

[0122] First stage filtration and stirring and mixing:

[0123] Centrifugal filtration: The upper filter cartridge 501 rotates in conjunction with the intermediate shaft 301 via the coupling block 302, using centrifugal force to trap larger particles of impurities in the sewage within the cartridge. The filtrate enters the upper inner cavity 409 through the filter holes and is discharged through the upper drain pipe 412. The rotation of the upper filter cartridge 501 generates centrifugal force that accelerates solid-liquid separation.

[0124] Three-dimensional stirring and mixing:

[0125] Side scraper stirring assembly: The driving gear 306 drives the driven gear 404 to rotate, causing the rubber plate 414 (close to the inner wall of the upper filter cylinder 501) to rotate, stirring the sewage and cleaning the cylinder wall to prevent the filter holes from being blocked.

[0126] Intermediate Lifting and Stirring Assembly 6: The tilting plate 305 rotates with the intermediate rotating shaft 301, pushing the intermediate lifting hollow cylinder 601 up and down along the vertical limit plate 407 through the U-shaped connecting seat 604. The internal horizontal plate 603 creates vertical convection, enhancing the mixing effect of the drug and wastewater. The up and down movement of the intermediate lifting hollow cylinder 601 creates a "suction-push" cycle, which generates a longitudinal flow of wastewater within the cylinder and improves mixing efficiency.

[0127] The stirring action of the rubber plate 414 and the horizontal plate 603 achieves mixing and wall cleaning synchronously, avoiding the clogging problem of traditional filtering equipment.

[0128] Periodic sewage discharge and secondary filtration:

[0129] Leakage Assembly Control: The contact ball 512 at the bottom of the upper filter cartridge 501 presses against the annular conical slope 706 as it rotates. When it reaches the arc-shaped groove 707, the tension spring 513 pulls the sealing plate 508 to open the leakage slot 504, allowing trapped impurities to fall into the lower filter cone 703 (wide at the top and narrow at the bottom), achieving periodic sewage discharge. The geometric coordination between the annular conical slope 706 and the contact ball 512 enables passive periodic opening and closing of the leakage assembly, eliminating the need for electronic control components and ensuring high reliability.

[0130] Spiral extrusion filtration: The lower rotating rod 303 drives the spiral blade 304 to rotate, stirring and squeezing the impurities in the lower filter cone 703, further separating the sewage (the filtrate enters the lower inner cavity 408 and is discharged through the lower drainage pipe 413), and the concentrated residue after squeezing is discharged through the sewage pipe 709.

[0131] The spiral blades 304 in the lower filter cone 703 mechanically squeeze the impurities, reducing the amount of waste discharged (the moisture content of the impurities is reduced) and reducing the subsequent processing costs.

[0132] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage mechanical separation integrated treatment device for power sewage, comprising a separation tank assembly (4), characterized in that: An intermediate rotating assembly (3) is centrally arranged inside the separation tank assembly (4), and the top of the intermediate rotating assembly (3) extends into the sewage inlet end cover assembly (2) fixed at the top of the separation tank assembly (4); An upper filter cartridge assembly (5) is provided in the upper portion of the separation tank assembly (4), a lower filter assembly (7) is provided in the lower portion of the separation tank assembly (4), and the bottom of the intermediate rotating assembly (3) passes through the upper filter cartridge assembly (5) and extends into the lower filter assembly (7); A side scraper stirring assembly is further provided in the upper portion of the separation tank assembly (4), an intermediate lifting stirring assembly (6) is centrally provided inside the upper filter cartridge assembly (5), and a plurality of groups of side scraper stirring assemblies are evenly spaced and distributed between the intermediate lifting stirring assembly (6) and the upper filter cartridge assembly (5); After the sewage enters the sewage inlet end cover assembly (2) and impacts the top of the intermediate rotating assembly (3), the intermediate rotating assembly (3) is driven to rotate. The intermediate rotating assembly (3) drives the upper filter cartridge assembly (5) and the side scraper stirring assembly to rotate, and also drives the intermediate lifting stirring assembly (6) to move up and down reciprocatingly; When the upper filter cartridge assembly (5) rotates, the leakage assembly at the bottom of the upper filter cartridge assembly (5) periodically contacts the arc-shaped groove (707) at the top of the lower filter assembly (7), thereby realizing periodic opening and closing of the leakage assembly, thereby realizing periodic sewage discharge from the upper filter cartridge assembly (5) into the lower filter assembly (7); The sewage inlet end cover assembly (2) comprises an inlet end cover (201), a sewage inlet pipe (203) connected to the side of the inlet end cover (201), and an upper flange ring (202) provided on the outer side of the lower end of the inlet end cover (201); The separation tank assembly (4) comprises a separation tank body (401) and a lower flange ring (402) on the outer side of the upper end of the separation tank body (401), wherein the upper flange ring (202) is fixed to the top of the lower flange ring (402) by bolts; An upper conical ring seat (403) is provided on the inner side of the upper end of the separation tank body (401), and a limiting cylinder (406) is fixed in the center of the upper conical ring seat (403) using a support plate (405); The intermediate rotating assembly (3) comprises an intermediate rotating shaft (301) sleeved in a limiting cylinder (406), a driving gear (306) fixed in sequence on the upper portion of the intermediate rotating shaft (301), and a plurality of groups of impact baffles (307) distributed at equal intervals. Two sets of bearings (205) are embedded in the connecting cylinder (204) at the middle bottom of the water inlet end cover (201), and the two sets of bearings (205) are sleeved on the top of the middle rotating shaft (301); The bottom end of the impact baffle (307) is provided with an inclined seat (308) facing the upper conical ring seat (403), and the bottom of the inclined seat (308) is provided with a cleaning brush (309); The intermediate lifting and stirring assembly (6) comprises an intermediate lifting hollow cylinder (601), a horizontal plate (603) provided on the inner wall of the intermediate lifting hollow cylinder (601), and a U-shaped connecting seat (604) fixed to the upper inner wall of the intermediate lifting hollow cylinder (601); A vertical limiting plate (407) is fixed to the lower end of the support plate (405), and the vertical limiting plate (407) is inserted into a corresponding vertical limiting groove (602) on the inner wall of the middle lifting hollow cylinder (601); A tilting plate (305) located below the driving gear (306) is also fixed on the intermediate rotating shaft (301), and a U-shaped connecting seat (604) is clamped on the side of the tilting plate (305).

2. The integrated multi-stage mechanical separation treatment device for power sewage according to claim 1 is characterized by: The side scraper stirring assembly comprises a side rotating shaft (410) penetrating the support plate (405), a driven gear (404) fixed on the top of the side rotating shaft (410), and a rubber plate (414) fixed on the side of the side rotating shaft (410); The driven gear (404) is engaged with the side of the driving gear (306).

3. The integrated multi-stage mechanical separation treatment device for power wastewater according to claim 1 is characterized by: The upper filter cartridge assembly (5) comprises an upper filter cartridge (501) and a truncated pedestal (502) provided on the bottom wall of the middle portion of the upper filter cartridge (501), wherein the bottom of the upper filter cartridge (501) is seated on the top of the lower filter assembly (7); The central portion of the pedestal seat (502) is provided with a plug hole (503), the bottom of the plug hole (503) is provided with a card slot (505), the bottom of the intermediate rotating shaft (301) is inserted into the plug hole (503), and the card block (302) at the bottom of the intermediate rotating shaft (301) is carded into the card slot (505); The interior of the separation tank body (401) is provided with an upper inner cavity (409) and a lower inner cavity (408) in sequence from top to bottom. The inner diameter of the lower inner cavity (408) is larger than the inner diameter of the upper inner cavity (409). A limiting ring seat (411) located below the upper conical ring seat (403) is fixedly provided on the inner side of the upper end of the upper inner cavity (409). The limiting ring seat (411) is sleeved on the outer side of the upper portion of the upper filter cartridge (501).

4. The integrated multi-stage mechanical separation treatment device for power sewage according to claim 3 is characterized by: The lower filter assembly (7) comprises a docking tube (704) extending into the upper inner cavity (409) and supported on the bottom of the upper filter tube (501), a sealing ring seat (705) provided on the outer side of the bottom of the docking tube (704), and a lower filter cone (703) centrally connected to the bottom of the docking tube (704); A lower rotating rod (303) is fixed in the center of the bottom of the intermediate rotating shaft (301), the lower rotating rod (303) extends into the lower filter cone (703), and a spiral blade (304) is provided on the lower rotating rod (303).

5. The integrated multi-stage mechanical separation treatment device for power sewage according to claim 4 is characterized by: A lower annular groove (708) is provided on the outer side of the upper end of the docking cylinder (704), an upper annular groove (506) is provided on the outer side of the bottom of the upper filter cylinder (501), and an annular sealing gasket (710) is provided between the lower annular groove (708) and the upper annular groove (506).

6. The integrated multi-stage mechanical separation treatment device for power wastewater according to claim 4 is characterized by: The sewage discharge pipe (709) at the bottom of the lower filter cone (703) extends through the middle of the bottom sealing cover (701), and the bottom sealing cover (701) is sleeved on the outside of the bottom of the separation tank (401).

7. The integrated multi-stage mechanical separation treatment device for power wastewater according to claim 4 is characterized by: An annular conical slope (706) is provided on the inner side of the upper end of the docking tube (704), and an arc-shaped groove (707) is provided on the annular conical slope (706); The bottom of the upper filter cartridge (501) is provided with a receiving groove (507), and the inner side of the top of the receiving groove (507) is provided with a leakage groove (504) that is in communication with the interior of the upper filter cartridge (501); The leakage assembly comprises a rotating drum (509) movably connected to the inner and outer sides of the receiving groove (507) by a pin (510), a sealing plate (508) fixed to the bottom of the rotating drum (509), a tension spring (513) fixed to the outer side of the upper end of the sealing plate (508) and the top wall of the receiving groove (507), and a contact ball (512) connected to the center of the outer side of the lower end of the sealing plate (508) by a push rod (511); The contact ball (512) is in surface contact with the annular conical slope (706).

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