Multi-stage mechanical separation integrated treatment device for electric sewage

Abstract

The invention relates to the technical field of electric sewage treatment, and discloses an electric sewage multistage mechanical separation integrated treatment device which is characterized in that a middle rotating assembly is arranged in the middle of the interior of a separation tank assembly, and the top of the middle rotating assembly extends into a sewage inlet end cover assembly fixed to the top of the separation tank assembly; an upper filter cartridge assembly is arranged in the upper part of the separation tank assembly, a lower filter assembly is arranged in the lower part of the separation tank assembly, and the bottom of the middle rotating assembly penetrates through the upper filter cartridge assembly and extends into the lower filter assembly; multi-stage mechanical separation is adopted, the treatment efficiency is improved, centrifugal filtration and spiral extrusion are adopted, impurity particles are separated through centrifugal force of the upper filter cylinder, impurities are further extruded through spiral blades of the lower filter cone cylinder, and the solid content of filtrate is further reduced. The tangential inlet water is matched with the three-dimensional stirring of the side scraping plate stirring assembly and the middle lifting stirring assembly to form a three-dimensional rotational flow field, so that the sewage and the medicine are uniformly mixed, the utilization rate of the medicine is improved, and the dosage of the medicine is reduced.

Description

Technical Field

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

[0002] In the power industry, sewage usually contains a large amount of solid suspended matters (such as fly ash, metal debris), grease and colloidal impurities. The traditional treatment process has the following core problems: First, the separation efficiency is low and cannot meet the requirements of multi-stage treatment: Traditional separation equipment (such as gravity sedimentation tanks, single filter tanks) can only achieve single-stage solid-liquid separation, and has poor separation effects on particles with a particle size <0.5 mm and emulsified oil. For example, the removal rate of particles with a particle size ≥1 mm by the gravity sedimentation tank is about 60%, but the removal rate of particles with a particle size of 0.1 - 1 mm is less than 30%, resulting in a large subsequent treatment load and difficult-to-meet effluent water quality standards (such as suspended solids SS > 100 mg / L). Second, the equipment integration degree is low and the floor area is large: The traditional process adopts a combined mode of "sedimentation - filtration - flotation" with separate units, and the equipment is arranged dispersedly, with a floor area of 30 - 50 m², which is difficult to meet the compact layout requirements of power plants. Third, the mixing effect is poor and the drug utilization rate is low: Traditional stirring methods (such as paddle stirring) can only achieve horizontal mixing, and there are stirring blind spots in the vertical direction, and the mixing uniformity of the drug and sewage is <70%, resulting in a 20% - 30% increase in the drug dosage and an increase in treatment costs. Therefore, we introduce a multi-stage mechanical separation integrated treatment device for power sewage. Summary of the Invention

[0003] The purpose 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 technique.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A multi-stage mechanical separation integrated treatment device for power sewage, including a separation tank assembly. An intermediate rotating assembly is centrally arranged inside the separation tank assembly, and the top of the intermediate rotating assembly extends into the sewage inlet end cover assembly fixed to the top of the separation tank assembly; An upper filter cylinder assembly is arranged inside the upper part of the separation tank assembly, and a lower filter assembly is arranged inside the lower part of the separation tank assembly. The bottom of the intermediate rotating assembly penetrates through the upper filter cylinder assembly and extends into the lower filter assembly; A side scraping and stirring assembly is further arranged inside the upper part of the separation tank assembly. An intermediate lifting and stirring assembly is centrally arranged inside the upper filter cylinder assembly, and several groups of side scraping and stirring assemblies are equally spaced between the intermediate lifting and stirring assembly and the upper filter cylinder assembly; After 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. While the intermediate rotating assembly drives the upper filter cylinder assembly and the side scraping and stirring assembly to rotate, it also drives the intermediate lifting and stirring assembly to move up and down reciprocally; When the upper filter cartridge assembly rotates, the material leakage assembly at the bottom of the upper filter cartridge assembly realizes periodic opening and closing of the material leakage assembly through periodic contact with the arc-shaped groove at the top of the lower filter assembly, so as to realize periodic sewage discharge from the upper filter cartridge assembly into the lower filter assembly.

[0005] 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 arranged outside the lower end of the inlet end cover; The separation tank assembly includes a separation tank body and a lower flange ring outside the upper end of the separation tank body, and the upper flange ring is fixed on the top of the lower flange ring by bolts.

[0006] Preferably, an upper conical ring seat is arranged inside the upper end of the separation tank body, and a limiting cylinder centered and fixed by a support plate is arranged inside the upper conical ring seat; The intermediate rotating assembly includes an intermediate rotating shaft sleeved in the limiting cylinder, a driving gear sequentially fixed on the upper part of the intermediate rotating shaft, and a number of impact baffles evenly distributed at equal intervals; Two groups of bearings are embedded in the connecting cylinder at the middle bottom of the inlet end cover, and the two groups of bearings are sleeved on the top of the intermediate rotating shaft; An inclined seat facing the upper part of the upper conical ring seat is arranged at the bottom end of the impact baffle, and a cleaning brush is arranged at the bottom of the inclined seat.

[0007] Preferably, the side scraping and stirring assembly includes a side rotating shaft penetrating through 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; The driven gear meshes with the side of the driving gear.

[0008] Preferably, the upper filter cartridge assembly includes an upper filter cartridge and a frustum seat arranged on the bottom wall in the middle of the upper filter cartridge, and the bottom of the upper filter cartridge is seated on the top of the lower filter assembly; A plugging hole is arranged in the middle of the frustum seat, and a clamping groove is arranged at the bottom of the plugging hole. The bottom of the intermediate rotating shaft is inserted into the plugging hole, and the clamping block at the bottom of the intermediate rotating shaft is clamped into the clamping groove; An upper inner cavity and a lower inner cavity are sequentially arranged in the separation tank body 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 is fixedly arranged on the inner side of the upper end of the upper inner cavity below the upper conical ring seat, and the limiting ring seat is sleeved on the outer side of the upper part of the upper filter cartridge.

[0009] The intermediate lifting and stirring assembly includes an intermediate lifting hollow cylinder, a horizontal plate arranged on the inner wall of the intermediate lifting hollow cylinder, and a U-shaped connecting seat fixed on the inner wall of the upper part of the intermediate lifting hollow cylinder; A vertical limiting plate is fixed at the lower end of the support plate, and the vertical limiting plate is inserted into a corresponding vertical limiting groove on the inner wall of the intermediate lifting hollow cylinder; An inclined disk located below the driving gear is also fixed on the middle rotating shaft, and the U-shaped connecting seat is stuck on the side of the inclined disk.

[0010] Preferably, the lower filtering component includes a docking cylinder extending into the upper inner cavity and supporting the bottom of the upper filtering cylinder, a sealing ring seat arranged on the outer side of the bottom of the docking cylinder, and a lower filtering cone cylinder connected to the center of the bottom of the docking cylinder; An annular groove is arranged on the outer side of the upper end of the docking cylinder, an annular groove is arranged on the outer side of the bottom of the upper filtering cylinder, and an annular gasket is arranged between the lower annular groove and the upper annular groove; A lower rotating rod is fixedly arranged at the center of the bottom of the middle rotating shaft, the lower rotating rod extends into the lower filtering cone cylinder, and spiral blades are arranged on the lower rotating rod; The sewage discharge pipe at the bottom of the lower filtering cone cylinder penetrates through the middle of the bottom sealing cover and extends out, and the bottom sealing cover is sleeved on the outer side of the bottom of the separation tank body.

[0011] Preferably, a ring-shaped conical slope is arranged on the inner side of the upper end of the docking cylinder, and an arc groove is arranged on the ring-shaped conical slope; A receiving groove is arranged at the bottom of the upper filtering cylinder, and a leakage groove communicating with the inside of the upper filtering cylinder is arranged on the inner side of the top of the receiving groove; The material leakage component includes a rotating cylinder movably connected to the outer side of the inside of the receiving groove by a pin shaft, a sealing plate fixed to the bottom of the rotating cylinder, a tension spring fixed to the top wall of the receiving groove 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 top rod; The contact ball is in surface contact with the surface of the ring-shaped conical slope.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention adopts multi-stage mechanical separation to improve the treatment efficiency. Centrifugal filtration + spiral extrusion: The upper filtering cylinder separates impurity particles by centrifugal force, and the spiral blades of the lower filtering cone cylinder further extrude the impurities, so that the solid content in the filtrate is further reduced.

[0013] Swirl mixing enhancement: Tangential water inlet (the sewage inlet pipe is tangentially connected) is combined with the three-dimensional stirring of the side scraping plate stirring component and the middle lifting stirring component to form a three-dimensional swirl field, so that the sewage and the medicine are evenly mixed, the utilization rate of the medicine is improved, and the dosage of the medicine is reduced.

[0014] Compact structure design: The separation tank component integrates functions of coarse filtration, stirring, fine filtration, and sewage discharge, and occupies a small area. Self-cleaning function: The cleaning brush sweeps the upper conical ring seat, and the rubber plate scrapes the cylinder wall to prevent impurity accumulation and extend the continuous operation cycle of the equipment. Description of the Drawings

[0015] Figure 1 It is a schematic exploded view of the overall assembly of the present invention; Figure 2Schematic cross-sectional structure diagram of the sewage inlet end cover assembly of the present invention; Figure 3 Schematic three-dimensional structure diagram of the intermediate rotating assembly of the present invention; Figure 4 Schematic cross-sectional structure diagram of the intermediate rotating assembly of the present invention; Figure 5 Schematic first-side cross-sectional structure diagram of the separation tank assembly of the present invention; Figure 6 Schematic second-side cross-sectional structure diagram of the separation tank assembly of the present invention; Figure 7 Schematic three-dimensional structure diagram of the upper filter cartridge assembly of the present invention; Figure 8 Schematic cross-sectional structure diagram of the upper filter cartridge assembly of the present invention; Figure 9 Schematic three-dimensional structure diagram of the material leakage component of the present invention; Figure 10 Schematic cross-sectional structure diagram of the assembled material leakage component and the upper filter cartridge assembly of the present invention; Figure 11 Schematic three-dimensional structure diagram of the intermediate lifting and stirring assembly of the present invention; Figure 12 Schematic structure diagram of the installation of the annular gasket of the present invention; Figure 13 Schematic cross-sectional structure diagram of the lower filter assembly of the present invention; Figure 14 Schematic structure diagram of the intermediate lifting and stirring assembly at the highest position of the present invention; Figure 15 Schematic structure diagram of the intermediate lifting and stirring assembly at the lowest position of the present invention; Figure 16 Schematic structure diagram of the connection between the intermediate lifting and stirring assembly and the vertical limiting plate of the present invention; Figure 17 Schematic three-dimensional structure diagram of the whole of the present invention; Figure 18 Schematic cross-sectional structure diagram of the whole of the present invention; Figure 19 Schematic cross-sectional structure diagram of the present invention when the leakage groove is sealed by the sealing plate; Figure 20 Schematic cross-sectional structure diagram of the present invention when the leakage groove leaks out through the sealing plate.

[0016] In the figure: 1. Bolt; 2. Sewage inlet end cover assembly; 201. Inlet end cover; 202. Upper flange ring; 203. Sewage inlet pipe; 204. Connecting cylinder; 205. Bearing; 3. Intermediate rotating assembly; 301. Intermediate rotating shaft; 302. Clamping block; 303. Lower rotating rod; 304. Helical blade; 305. Inclined disk; 306. Driving gear; 307. Impact baffle; 308. Inclined seat; 309. Cleaning brush; 4. Separation tank assembly; 401. Separation tank 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 rotating shaft; 411. Limiting ring seat; 412. Upper drain pipe; 413. Lower drain pipe; 414. Rubber plate; 5. Upper filter cartridge assembly; 501. Upper filter cartridge; 502. Frustum seat; 503. Insertion hole; 504. Leakage groove; 505. Card slot; 506. Upper annular groove; 507. Accommodation groove; 508. Sealing plate; 509. Rotating cylinder; 510. Pin shaft; 511. Thrust rod; 512. Contact ball; 513. Tension spring; 6. Intermediate lifting and stirring assembly; 601. Intermediate lifting hollow cylinder; 602. Vertical limiting groove; 603. Horizontal plate; 604. U-shaped connecting seat; 7. Lower filter assembly; 701. Bottom sealing cover; 702. Leg; 703. Lower filter cone; 704. Docking cylinder; 705. Sealing ring seat; 706. Annular conical slope; 707. Arc groove; 708. Lower annular groove; 709. Drain pipe; 710. Annular gasket. Detailed implementation manners

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] Embodiment: Please refer to Figure 1 - 20 , the present invention provides a technical solution: A multi-stage mechanical separation and integrated treatment device for electric power sewage includes a separation tank assembly 4. An intermediate rotating assembly 3 is centrally arranged inside the separation tank assembly 4, and the top of the intermediate rotating assembly 3 extends to the sewage inlet end cover assembly 2 fixed to the top of the separation tank assembly 4; 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 arranged outside the lower end of the inlet end cover 201; The axis of the sewage inlet pipe 203 is tangentially connected to the surface of the inlet end cover 201, that is, the center line of the sewage inlet pipe 203 coincides with the tangent of the surface of the inlet end cover 201 at the connection. In this way, when sewage is introduced into the inlet end cover 201 through the sewage inlet pipe 203, the sewage can directly impact the impact baffle 307, thereby driving the intermediate rotating assembly 3 to rotate. Utilize the kinetic energy of the sewage itself to push the intermediate rotating assembly 3, without the need for an additional power source, reducing energy consumption.

[0019] The sewage inlet pipe 203 is tangentially connected to the inlet end cover 201, and the sewage flows in at a high speed in a tangential direction (flow velocity v≥2m / s), forming a circumferential swirl in the inlet end cover 201, and its movement trajectory is a spiral line around the intermediate rotating shaft 301.

[0020] Function: Pre-mixing: The circumferential swirl enables the preliminary mixing of sewage and chemicals, forming a uniform initial concentration gradient.

[0021] Kinetic energy transfer: The swirl impacts the impact baffle 307, driving the intermediate rotating assembly 3 to rotate, providing power for subsequent stirring.

[0022] The separation tank assembly 4 includes a separation tank body 401 and a lower flange ring 402 outside the upper end of the separation tank body 401, and the upper flange ring 202 is fixed to the top of the lower flange ring 402 by bolts 1.

[0023] An upper conical ring seat 403 is provided inside 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 inlet end cover 201 can fall along the upper conical ring seat 403 into the upper filter cartridge 501.

[0024] Inside the upper conical ring seat 403, there is a limiting cylinder 406 centrally fixed by a support plate 405; The intermediate rotating assembly 3 includes an intermediate rotating shaft 301 sleeved inside the limiting cylinder 406, a driving gear 306 fixedly arranged in sequence on the upper part of the intermediate rotating shaft 301, and several groups of impact baffles 307 evenly distributed at equal intervals; When sewage is introduced into the 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.

[0025] Or the top of the intermediate rotating shaft 301 extends out of the inlet end cover 201 and is connected to the output of the servo motor at the top of the 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 servo motor can be selected and matched to drive, adapting to the low sewage flow condition and ensuring the operation stability of the equipment.

[0026] Two sets of bearings 205 are embedded in the connecting cylinder 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 middle rotating shaft 301, and the combined limiting cylinder 406 is sleeved on the outside of the middle rotating shaft 301 to achieve stable connection of the middle rotating shaft 301, making the rotation of the middle rotating shaft 301 smoother.

[0027] At the bottom end of the impact baffle 307, there is an inclined seat 308 directly facing the upper conical ring seat 403, and a cleaning brush 309 is provided at the bottom of the inclined seat 308. When the middle rotating assembly 3 rotates, the cleaning brush 309 at the bottom of the inclined seat 308 can clean the surface of the upper conical ring seat 403, prevent sewage impurities from accumulating on the surface of the upper conical ring seat 403, and sweep the sewage impurities accumulated on the surface of the upper conical ring seat 403 into the upper filter cylinder 501.

[0028] An upper filter cylinder assembly 5 is provided inside the upper part of the separation tank assembly 4; The upper filter cylinder assembly 5 includes an upper filter cylinder 501 and a frustum seat 502 provided on the bottom wall of the middle part of the upper filter cylinder 501. The bottom of the upper filter cylinder 501 is seated on the top of the lower filter assembly 7; A plug hole 503 is provided in the middle of the frustum seat 502, and a clamping groove 505 is provided at the bottom of the plug hole 503. The bottom of the middle rotating shaft 301 is inserted into the plug hole 503, and the clamping block 302 at the bottom of the middle rotating shaft 301 is snapped into the clamping groove 505; In this way, the rotation of the middle rotating shaft 301 of the middle rotating assembly 3 can drive the upper filter cylinder 501 to rotate. Thus, under the action of the centrifugal force after the upper filter cylinder 501 rotates, the sewage in the upper filter cylinder 501 enters the upper inner cavity 409 after being filtered and separated by the upper filter cylinder 501, and the remaining impurities in the sewage continue to stay in the upper filter cylinder 501.

[0029] Inside the separation tank body 401, an upper inner cavity 409 and a lower inner cavity 408 are successively provided from top to bottom. The inner diameter of the lower inner cavity 408 is larger than that 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, and the limiting ring seat 411 is sleeved on the outer side of the upper part of the upper filter cylinder 501. This can achieve the positioning of the upper filter cylinder 501, prevent the upper filter cylinder 501 from shaking during rotation, and make the rotation of the upper filter cylinder 501 smoother.

[0030] A lower filter assembly 7 is provided inside the lower part of the separation tank assembly 4, and the bottom of the middle rotating assembly 3 penetrates through the upper filter cylinder assembly 5 and extends into the lower filter assembly 7; The lower filtering component 7 includes a docking cylinder 704 extending into the upper inner cavity 409 and supported at the bottom of the upper filtering cylinder 501, a sealing ring seat 705 provided on the outer side of the bottom of the docking cylinder 704, and a lower filtering cone cylinder 703 centrally connected to the bottom of the docking cylinder 704; the lower filtering cone cylinder 703 is arranged in a shape with a wider top and a narrower bottom. The sewage impurities in the upper filtering cylinder 501 fall to the lower filtering cone cylinder 703 and gradually accumulate. The sewage in the accumulated impurities will enter the lower inner cavity 408 after being filtered and separated by the lower filtering cone cylinder 703.

[0031] 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 filtering cylinder 501, and an annular sealing gasket 710 is provided between the lower annular groove 708 and the upper annular groove 506. After the bottom of the upper filtering cylinder 501 is seated on the top of the docking cylinder 704 to form a support for the upper filtering cylinder 501, the annular sealing gasket 710 can be used to achieve the sealing between the bottom of the upper filtering cylinder 501 and the top of the docking cylinder 704, and at the same time, it can also not interfere with the rotation of the upper filtering cylinder 501 relative to the docking cylinder 704.

[0032] A lower rotating rod 303 is centrally fixed to the bottom of the intermediate rotating shaft 301. The lower rotating rod 303 extends into the lower filtering cone cylinder 703, and a spiral blade 304 is provided on the lower rotating rod 303; the spiral blade 304 rotates in the lower filtering cone cylinder 703 driven by the lower rotating rod 303, and can stir and squeeze downward the impurities accumulated in the lower filtering cone cylinder 703, so that the accumulated impurities can more easily filter and separate the sewage and enter the lower inner cavity 408. At this time, the valve on the sewage discharge pipe 709 needs to be in a closed state.

[0033] The sewage discharge pipe 709 at the bottom of the lower filtering cone cylinder 703 passes through the middle of the bottom sealing cover 701 and extends out. The bottom sealing cover 701 is sleeved on the outer side of the bottom of the separation tank body 401.

[0034] When it is necessary to discharge the impurities in the lower filtering cone cylinder 703, only need to open the valve on the sewage discharge pipe 709. At this time, under the action of the downward extrusion and transportation of the impurities by the spiral blade 304, the impurities can be smoothly discharged through the sewage discharge pipe 709.

[0035] A side scraping and stirring component is also provided inside the upper part of the separation tank assembly 4; The side scraping and stirring component includes a side rotating shaft 410 penetrating through the support plate 405, a driven gear 404 fixed to the top of the side rotating shaft 410, and a rubber plate 414 fixed to the side of the side rotating shaft 410. The driven gear 404 meshes with the side of the driving gear 306.

[0036] When the intermediate rotating assembly 3 rotates in the middle, the driving gear 306 thereon can drive the driven gear 404 to rotate. Then, the driven gear 404 drives the rubber plate 414 to rotate through the side shaft 410, stirring the sewage entering the upper filter cartridge assembly 5, so that the medicine and the sewage are fully mixed.

[0037] An intermediate lifting and stirring assembly 6 is centrally arranged inside the upper filter cartridge assembly 5; The intermediate lifting and stirring assembly 6 includes an intermediate lifting hollow cylinder 601, a horizontal plate 603 arranged 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 the corresponding vertical limiting groove 602 on the inner wall of the intermediate lifting hollow cylinder 601; The vertical limiting plate 407 and the vertical limiting groove 602 form a sliding pair, forcing the intermediate lifting hollow cylinder 601 to move in a straight line only in the vertical direction, preventing it from having radial offset or shaking during rotation. Ensure the coaxiality of the intermediate lifting hollow cylinder 601 and the upper filter cartridge 501, avoid collision and friction between the two, and extend the service life of the equipment.

[0038] An inclined disk 305 located below the driving gear 306 is also fixed on the intermediate rotating shaft 301, and the U-shaped connecting seat 604 is stuck on the side of the inclined disk 305.

[0039] When the intermediate rotating shaft 301 rotates, it will drive the inclined disk 305 thereon to rotate. At this time, since the U-shaped connecting seat 604 is stuck on the side of the inclined disk 305, the rotation of the inclined disk 305 will drive the U-shaped connecting seat 604 to move up and down, and then drive the intermediate lifting hollow cylinder 601 to move up and down; When the intermediate lifting hollow cylinder 601 moves up and down, the horizontal plate 603 on the inner wall of the intermediate lifting hollow cylinder 601 stirs the sewage inside the intermediate lifting hollow cylinder 601, and after driving the sewage inside the intermediate lifting hollow cylinder 601 upward, the sewage at the bottom between the upper filter cartridge 501 and the intermediate lifting hollow cylinder 601 flows back from the bottom to fill the intermediate lifting hollow cylinder 601, and then the sewage at the upper part of the intermediate lifting hollow cylinder 601 flows downward into the space between the upper filter cartridge 501 and the intermediate lifting hollow cylinder 601. In this way, the stirring efficiency of the sewage can be improved, and the medicine and the sewage can be fully mixed.

[0040] Axial convection (vertical direction) of the horizontal plate 603: Formation mechanism: The intermediate lifting hollow cylinder 601 moves up and down reciprocally, and the horizontal plate 603 inside it pushes the fluid to turn up and down, forming axial convection.

[0041] Function: Break the "laminar flow" state of the horizontal swirl, generate an axial velocity gradient in the vertical direction, and enable the upper fluid and the lower fluid to fully exchange.

[0042] 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 "longitudinal circulation" to strengthen the vertical mixing.

[0043] Several groups of side scraper stirring components are evenly distributed between the middle lifting stirring component 6 and the upper filter cylinder component 5, that is, the rubber plate 414 closely adheres to the inner wall of the upper filter cylinder 501 and the outer wall of the middle lifting hollow cylinder 601. While 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, preventing blockage of the side walls of the upper filter cylinder 501 and the middle lifting hollow cylinder 601.

[0044] Radial shear flow (horizontal direction) of the rubber plate 414: Formation mechanism: The rubber plate 414 of the side scraper stirring component rotates closely along the inner wall of the upper filter cylinder 501, generating a radial shear force to push the fluid near the cylinder wall towards the central area.

[0045] Function: Break the "rigid rotation" state of the circumferential swirl, form a radial velocity gradient in the horizontal direction (low central flow velocity and high edge flow velocity), and promote the transverse mixing of fluid microgroups. Clean the cylinder wall: The rubber plate 414 scrapes off the impurities attached to the cylinder wall to prevent local concentration anomalies.

[0046] After the sewage enters the sewage inlet end cover component 2 and impacts the top of the middle rotating component 3, it drives the middle rotating component 3 to rotate. While the middle rotating component 3 drives the upper filter cylinder component 5 and the side scraper stirring component to rotate, it also drives the middle lifting stirring component 6 to move up and down reciprocally; When the upper filter cylinder component 5 rotates, the leakage component at the bottom of the upper filter cylinder component 5 realizes periodic opening and closing through periodic contact with the arc-shaped groove 707 at the top of the lower filter component 7, so as to realize periodic sewage discharge from the upper filter cylinder component 5 into the lower filter component 7.

[0047] The bottom of the bottom sealing cover 701 is provided with legs 702. The sides of the separation tank body 401 are respectively provided with an upper drain pipe 412 and a lower drain pipe 413. The upper drain pipe 412 communicates with the bottom of the upper inner cavity 409, the lower drain pipe 413 communicates with the bottom of the lower inner cavity 408, and the lower drain pipe 413 extends through the side of the bottom sealing cover 701.

[0048] The inner side of the upper end of the docking cylinder 704 is provided with an annular conical slope 706. The inner diameter of the annular conical slope 706 gradually decreases from top to bottom, and the arc-shaped groove 707 is arranged on the annular conical slope 706; The bottom of the upper filter cartridge 501 is provided with a receiving groove 507, and a leakage groove 504 communicating with the inside of the upper filter cartridge 501 is provided on the inner side of the top of the receiving groove 507; The material leakage assembly includes a rotating cylinder 509 movably connected to the outside of the inside of the receiving groove 507 by a pin shaft 510, a sealing plate 508 fixed to the bottom of the rotating cylinder 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 outside of the lower end of the sealing plate 508 in the middle by a push rod 511; The contact ball 512 is in contact with the surface of the annular conical slope 706.

[0049] As Figure 19 shown, in the initial state, the contact ball 512 is in contact with the surface of the annular conical slope 706, so that the contact ball 512 makes the inner side of the sealing plate 508 rotate upward around the pin shaft 510 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.

[0050] Subsequently, when the upper filter cartridge 501 rotates and the contact ball 512 moves to the arc-shaped groove 707, under the pulling force of the tension spring 513 on the outer side of the sealing plate 508, the inner side of the sealing plate 508 rotates downward around the pin shaft 510, and the inner side of the sealing plate 508 leaks the bottom of the leakage groove 504 until the contact ball 512 abuts against the surface of the arc-shaped groove 707 (as Figure 20 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.

[0051] As the upper filter cartridge 501 continues to rotate, after the contact ball 512 slides out of the arc-shaped groove 707 to the surface of the annular conical slope 706, the inner side of the sealing plate 508 will seal the bottom of the leakage groove 504 again. In this way, as the upper filter cartridge 501 rotates, the material leakage assembly can periodically open and close the leakage groove 504 to realize the periodic discharge of the impurities in the upper filter cartridge 501 into the lower filter cone 703.

[0052] Specifically, when in use: Sewage input and initial drive: Tangential water inlet impact: After adding medicine to the sewage, it is introduced into the sewage inlet pipe 203 by a sewage pump, and flows into the inlet end cover 201 at a high speed through the sewage inlet pipe 203 (tangent to the surface of the inlet end cover 201), impacting the impact baffle 307 at the top of the intermediate rotating assembly 3, and using the kinetic energy of the water flow to drive the intermediate rotating shaft 301 to rotate. Using the kinetic energy of the sewage itself to drive the intermediate rotating assembly 3, no additional power source is required, reducing energy consumption.

[0053] Initial separation guidance: The sewage accelerates and falls down to the upper filter cylinder 501 through the upper conical ring seat 403 (with a larger inner diameter at the top and a smaller inner diameter at the bottom). At the same time, the cleaning brush 309 rotates with the intermediate rotating assembly 3 to clean the impurities on the surface of the upper conical ring seat 403 and prevent accumulation and blockage.

[0054] Primary filtration and stirring mixing: Centrifugal filtration: The upper filter cylinder 501 is linked and rotated with the intermediate rotating shaft 301 through the clamping block 302. Larger particle impurities in the sewage are intercepted in the cylinder by centrifugal force. 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 cylinder 501 generates centrifugal force to accelerate the solid-liquid separation.

[0055] Three-dimensional stirring mixing: Side scraping and 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.

[0056] Intermediate lifting and stirring assembly 6: The inclined disk 305 rotates with the intermediate rotating shaft 301, and through the U-shaped connecting seat 604, it pushes the intermediate lifting hollow cylinder 601 to reciprocate up and down along the vertical limiting plate 407. The internal horizontal plate 603 forms an up-and-down convection, strengthening the mixing effect of the drug and the sewage. The up-and-down movement of the intermediate lifting hollow cylinder 601 forms a "suction-push" cycle, causing the sewage to generate longitudinal flow in the cylinder and improving the mixing efficiency.

[0057] The stirring actions of the rubber plate 414 and the horizontal plate 603 synchronously achieve mixing and wall cleaning, avoiding the blockage problem of traditional filtration equipment.

[0058] Periodic sewage discharge and secondary filtration: Leakage component control: The contact ball 512 at the bottom of the upper filter cylinder 501 presses against the annular conical slope 706 as it rotates. When it moves to the arc-shaped groove 707, the tension spring 513 pulls the sealing plate 508 to open the leakage groove 504, and the intercepted impurities fall into the lower filter cone 703 (with a structure that is wider at the top and narrower at the bottom), achieving periodic sewage discharge. Through the geometric cooperation of the annular conical slope 706 and the contact ball 512, the passive periodic opening and closing of the leakage component are realized, without the need for electronic control components and with high reliability.

[0059] Spiral extrusion filtration: The lower rotating rod 303 drives the spiral blade 304 to rotate, stirring and extruding the impurities in the lower filter cone 703 to further separate the sewage (the filtrate enters the lower inner cavity 408 and is discharged through the lower drain pipe 413), and the extruded thick residue is discharged through the sewage pipe 709.

[0060] The spiral blade 304 in the lower filter cone 703 mechanically extrudes the impurities, reducing the sewage discharge volume (lowering the moisture content of the impurities) and reducing the subsequent treatment cost.

[0061] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated multi-stage mechanical separation treatment device for power sewage, comprising a separation tank assembly (4), characterized in that: A middle rotating assembly (3) is centrally arranged inside the separation tank assembly (4), and the top of the middle rotating assembly (3) extends into the sewage inlet end cover assembly (2) fixed to the top of the separation tank assembly (4); An upper filter cartridge assembly (5) is arranged inside the upper part of the separation tank assembly (4), and a lower filter assembly (7) is arranged inside the lower part of the separation tank assembly (4). The bottom of the middle rotating assembly (3) penetrates through the upper filter cartridge assembly (5) and extends into the lower filter assembly (7); A side scraping and stirring assembly is also arranged inside the upper part of the separation tank assembly (4). A middle lifting and stirring assembly (6) is centrally arranged inside the upper filter cartridge assembly (5), and several groups of side scraping and stirring assemblies are evenly distributed between the middle lifting and stirring assembly (6) and the upper filter cartridge assembly (5); After sewage enters the sewage inlet end cover assembly (2) and impacts the top of the middle rotating assembly (3), it drives the middle rotating assembly (3) to rotate. While the middle rotating assembly (3) drives the upper filter cartridge assembly (5) and the side scraping and stirring assembly to rotate, it also drives the middle lifting and stirring assembly (6) to move up and down reciprocally; When the upper filter cartridge assembly (5) rotates, the leakage component at the bottom of the upper filter cartridge assembly (5) realizes periodic opening and closing through periodic contact with the arc-shaped groove (707) at the top of the lower filter assembly (7), so as to realize periodic sewage discharge from the upper filter cartridge assembly (5) into the lower filter assembly (7).

2. The integrated treatment device for multi-stage mechanical separation of electric power sewage according to claim 1, wherein: 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) arranged outside the lower end of the inlet end cover (201); The separation tank assembly (4) includes a separation tank body (401) and a lower flange ring (402) outside the upper end of the separation tank body (401), and the upper flange ring (202) is fixed to the top of the lower flange ring (402) by bolts.

3. The integrated treatment device for multi-stage mechanical separation of electric power sewage according to claim 2, wherein: An upper conical ring seat (403) is arranged inside the upper end of the separation tank body (401), and a limiting cylinder (406) centrally fixed by a support plate (405) is arranged inside the upper conical ring seat (403); The middle rotating assembly (3) includes a middle rotating shaft (301) sleeved inside the limiting cylinder (406), a driving gear (306) fixedly arranged in sequence on the upper part of the middle rotating shaft (301), and several groups of impact baffles (307) evenly distributed at equal intervals; Two groups of bearings (205) are embedded in the connecting cylinder (204) at the middle bottom of the inlet end cover (201), and the two groups of bearings (205) are sleeved on the top of the middle rotating shaft (301); An inclined seat (308) facing directly above the upper conical ring seat (403) is arranged at the bottom end of the impact baffle (307), and a cleaning brush (309) is arranged at the bottom of the inclined seat (308).

4. The integrated treatment device for multi-stage mechanical separation of electric power sewage according to claim 3, wherein: The side scraping and stirring assembly includes a side rotating shaft (410) penetrating through the support plate (405), a driven gear (404) fixedly arranged at the top of the side rotating shaft (410), and a rubber plate (414) fixedly arranged on the side of the side rotating shaft (410); The driven gear (404) meshes with the side of the driving gear (306).

5. An integrated treatment device for multi-stage mechanical separation of electric power sewage according to claim 3, characterized in that: The upper filter cartridge assembly (5) includes an upper filter cartridge (501) and a frustum base (502) provided on the bottom wall in the middle 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). A socket hole (503) is provided in the middle of the frustum base (502), and a clamping groove (505) is provided at the bottom of the socket hole (503). The bottom of the intermediate rotating shaft (301) is inserted into the socket hole (503), and the clamping block (302) at the bottom of the intermediate rotating shaft (301) is snapped into the clamping groove (505). An upper inner cavity (409) and a lower inner cavity (408) are successively provided in the separation tank body (401) from top to bottom. The inner diameter of the lower inner cavity (408) is larger than that of the upper inner cavity (409). A limit ring seat (411) is fixedly provided on the inner side of the upper end of the upper inner cavity (409) below the upper conical ring seat (403), and the limit ring seat (411) is sleeved on the outer side of the upper part of the upper filter cartridge (501).

6. The integrated treatment device for multi-stage mechanical separation of electric power sewage according to claim 3, wherein: 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 inner wall of the upper part of the intermediate lifting hollow cylinder (601). A vertical limiting plate (407) is fixed at 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 intermediate lifting hollow cylinder (601). An inclined plate (305) is also fixed on the intermediate rotating shaft (301) below the driving gear (306), and the U-shaped connecting seat (604) is clamped on the side of the inclined plate (305).

7. An integrated treatment device for multi-stage mechanical separation of electric power sewage according to claim 5, characterized in that: The lower filter assembly (7) includes a docking cylinder (704) extending into the upper inner cavity (409) and supporting the bottom of the upper filter cartridge (501), a sealing ring seat (705) provided on the outer side of the bottom of the docking cylinder (704), and a lower filter frustum (703) connected to the center of the bottom of the docking cylinder (704). A lower rotating rod (303) is fixedly provided at the center of the bottom of the intermediate rotating shaft (301), the lower rotating rod (303) extends into the lower filter frustum (703), and a spiral blade (304) is provided on the lower rotating rod (303).

8. An integrated treatment device for multi-stage mechanical separation of electric power sewage according to claim 7, characterized in that: 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 cartridge (501), and an annular sealing gasket (710) is provided between the lower annular groove (708) and the upper annular groove (506).

9. The integrated power sewage multi-stage mechanical separation treatment device according to claim 7, wherein: A sewage discharge pipe (709) at the bottom of the lower filter frustum (703) passes through the middle of the bottom sealing cover (701) and extends out. The bottom sealing cover (701) is sleeved on the outer side of the bottom of the separation tank body (401).

10. An integrated power sewage multi-stage mechanical separation treatment device according to claim 7, characterized in that: An annular conical slope (706) is provided on the inner side of the upper end of the docking cylinder (704), and an arc groove (707) is provided on the annular conical slope (706). A receiving groove (507) is provided at the bottom of the upper filter cartridge (501), and a leakage groove (504) communicating with the inside of the upper filter cartridge (501) is provided on the inner side of the top of the receiving groove (507). The leakage material component includes a rotating cylinder (509) movably connected to the outer side inside the receiving groove (507) by a pin shaft (510), a sealing plate (508) fixed to the bottom of the rotating cylinder (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 outer side of the lower end of the sealing plate (508) in the middle by a push rod (511); The contact ball (512) is in contact with the surface of the annular conical slope (706).

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