Integrated sewage phosphorus removal equipment

Abstract

This invention provides an integrated wastewater phosphorus removal device, relating to the technical field of wastewater treatment. It includes a support frame, with a sedimentation tank fixedly connected to the top of the support frame, a mixing tank fixedly connected to the top of the sedimentation tank, and a chemical delivery hopper fixedly connected to the top of the mixing tank. A mixing unit is installed inside the mixing tank; the mixing unit is used to add phosphorus removal agents to the mixing tank and improve the mixing efficiency between wastewater and the phosphorus removal agents. A solid-liquid separation unit is installed inside the sedimentation tank; the solid-liquid separation unit is used to transport the mixed wastewater containing the phosphorus removal agents from the mixing tank to the sedimentation tank and separate the supernatant from the sediment. In this invention, the support frame provides stable support for the entire device, and the sedimentation tank, mixing tank, and chemical delivery hopper are fixedly integrated from top to bottom, eliminating the need for disassembly and transportation. This reduces the equipment's footprint, avoids the risk of wastewater leakage during transportation, simplifies the operation process, and reduces the labor intensity of personnel.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and more particularly to an integrated wastewater phosphorus removal device. Background Technology

[0002] In the field of wastewater treatment, phosphorus is one of the key pollutants leading to eutrophication of water bodies, and phosphorus removal from wastewater is a crucial step in water environment management. Currently, the mainstream wastewater phosphorus removal technology mostly employs chemical phosphorus removal methods, which involve adding phosphorus removal agents to the wastewater, causing the agents to react with the phosphorus in the wastewater to form insoluble precipitates, which are then removed through solid-liquid separation. However, existing wastewater phosphorus removal equipment still has the following problems:

[0003] Existing phosphorus removal equipment is mostly designed as a split unit, with functions such as mixing reaction, sedimentation separation, and clear liquid discharge completed by separate equipment. This not only occupies a large area, but also requires a lot of pipelines to connect the various equipment. Leaks are prone to occur during sewage transfer, causing secondary pollution, and the operation is cumbersome.

[0004] In the stage of mixing powdered phosphorus removal agents with wastewater, the existing equipment usually involves directly pouring the agent into the treatment tank all at once. This can easily cause the agent to clump and accumulate at the bottom of the tank, making it difficult for it to fully contact the wastewater. In addition, the mixing structure inside the mixing tank is usually just a simple rotation and stirring to mix the agent and wastewater. This results in poor uniformity of mixing and poor phosphorus removal effect.

[0005] The existing equipment has a fixed height for the clear liquid drain outlet. If the outlet is too low, the liquid will not drain completely. If it is too high, the liquid level must be reached before it can be discharged, which directly reduces the treatment efficiency. Some equipment requires an additional water pump to assist in the pumping, which increases the cost of the equipment. Therefore, it is necessary to provide an integrated wastewater phosphorus removal equipment to solve the above technical problems. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the present invention provides an integrated wastewater phosphorus removal device.

[0007] The present invention provides an integrated wastewater phosphorus removal device, including a support frame, a sedimentation tank fixedly connected to the top of the support frame, a mixing tank fixedly connected to the top of the sedimentation tank, and a chemical feeding hopper fixedly connected to the top of the mixing tank.

[0008] The mixing tank is equipped with a mixing unit; the mixing unit is used to add phosphorus removal agents into the mixing tank and improve the mixing efficiency of wastewater and phosphorus removal agents.

[0009] The sedimentation tank is equipped with a solid-liquid separation unit; the solid-liquid separation unit is used to transport the mixed wastewater after the phosphorus removal agent is mixed in the mixing tank to the sedimentation tank, and to separate the supernatant from the sediment.

[0010] The solid-liquid separation unit is equipped with a drainage component, which is used to adjust the height according to the depth of the upper clear liquid and discharge the upper clear liquid to the outside of the sedimentation tank; the bottom of the sedimentation tank is fixedly connected to a drain pipe, and a valve is installed on the drain pipe.

[0011] Preferably, the mixing unit includes a stirring component and a drug delivery component; the stirring component includes a straight cylinder, the top two sides of which are fixedly connected to the inner wall of the mixing tank, a stirring shaft is provided on the inner side of the straight cylinder, a first spiral blade is fixedly sleeved on the outer side of the stirring shaft, a rotating frame is rotatably sleeved on the outer side of the straight cylinder, the bottom end of the stirring shaft extends out of the straight cylinder and is fixedly connected to the frame wall of the rotating frame, and a plurality of stirring blades are uniformly fixedly connected on the outer side of the rotating frame.

[0012] Preferably, the delivery component includes a guide hood, the top of which is fixedly connected to the outlet end of the delivery hopper. A motor is fixedly installed on the wall of the delivery hopper. A connecting shaft is provided inside the guide hood. A cone block is fixedly connected to the bottom end of the connecting shaft. The top end of the connecting shaft passes through the delivery hopper and is fixedly connected to the rotating end of the motor. A second spiral blade is fixedly sleeved on the outside of the connecting shaft. Several circumferentially arrayed guide plates are fixedly connected to the outside of the cone block. The distance between the top ends of two adjacent guide plates is smaller than the distance between their bottom ends, so that the phosphorus removal agent spreads out when falling from the top to the bottom. The second spiral blade rotates in the opposite direction to the first spiral blade. The bottom end of the connecting shaft is fixedly connected to the top end of the stirring shaft.

[0013] Preferably, the solid-liquid separation unit includes a lifting filter component, a transmission control component, and an opening and closing component; the lifting filter component includes an electric cylinder, which is fixedly installed at the top of the sedimentation tank, and a piston plate is slidably connected to the inner side of the sedimentation tank. The telescopic end of the electric cylinder passes through the sedimentation tank and is fixedly connected to the top of the piston plate. Several filter screens are fixedly installed through the piston plate, and a water pipe is fixedly connected vertically through the piston plate.

[0014] Preferably, the transmission control component includes two transverse sliding grooves symmetrically arranged on both sides of the water pipe. A valve plate is slidably connected to each of the two transverse sliding grooves. A transverse clearance opening communicating with the transverse sliding groove is provided through the top of the piston plate. A transversely sliding vertical connecting rod is provided within the transverse clearance opening. A wheel is rotatably connected to the top of the vertical connecting rod, and the bottom end of the vertical connecting rod is fixedly connected to the top of the valve plate. An inner sleeve is fixedly connected to one side of the vertical connecting rod, and an outer sleeve is slidably fitted onto the outer side of the inner sleeve. The bottom of the outer sleeve... A spring is fixedly connected to the top of the piston plate. The outer sleeve and the inner sleeve are both equipped with a spring. One end of the spring is fixedly connected to the inner wall of one end of the outer sleeve, and the other end of the spring is fixedly connected to the inner wall of one end of the inner sleeve. A water outlet pipe is fixedly connected to the bottom end of the mixing tank corresponding to its outlet end. The water pipe is slidably inserted into the water outlet pipe. Two guide blocks are symmetrically fixedly connected to both sides of the water outlet pipe. The two guide blocks are correspondingly and compatible with the two rotating wheels. The guide blocks are provided with oblique guide parts and vertical guide parts.

[0015] Preferably, the opening and closing component includes a frustum valve block, which slides and seals with the outlet end of the mixing tank to seal the outlet end of the mixing tank. Two vertical clearance openings are symmetrically opened on both sides of the water outlet pipe. A vertically sliding push rod is provided on the inner side of each of the two vertical clearance openings. One end of each of the two push rods is fixedly connected to the bottom end of the frustum valve block. The two push rods correspond one-to-one with two rotating wheels. The wheel wall of the rotating wheel abuts against the bottom of the corresponding push rod. A baffle is fixedly sleeved on the outer side of each of the two push rods. The baffle is correspondingly arranged with the vertical clearance opening. One side of the baffle is sealed and slides against the inner wall of the water outlet pipe. The baffle is used to block one end of the vertical clearance opening.

[0016] Preferably, the drainage component includes a side slot that extends through one side of the sedimentation tank. A side plate is slidably connected inside the side slot. One side of the side plate is fixedly connected to the outer wall of the piston plate. A drainage shell is fixedly connected to the upper part of the side plate. The inlet end of the drainage shell is flush with the top of the piston plate. An inner tube communicating with the interior of the drainage shell is fixedly connected to the bottom of the drainage shell. An outer tube is slidably and sealingly fitted on the outer side of the inner tube. The lower part of the outer tube is fixedly connected to the wall of the support.

[0017] Preferably, the rotating wheel is rolled on the corresponding oblique guide and vertical guide; the bottom end of the vertical guide and the top end of the oblique guide are transitioned by a rounded corner, and the distance from the top end of the oblique guide to the axis of the water outlet pipe is greater than the distance from its bottom end to the axis of the water outlet pipe. The oblique guide and the vertical guide are used to guide the movement of the rotating wheel.

[0018] Preferably, the sedimentation tank is provided with a transparent observation window on its side wall to facilitate the operator's observation of the interior of the sedimentation tank.

[0019] Preferably, a scraper is fixedly connected to the bottom end of the rotating frame, and the scraper slides against the inner bottom surface of the mixing tank.

[0020] Compared with related technologies, the integrated wastewater phosphorus removal equipment provided by the present invention has the following beneficial effects:

[0021] 1. In this invention, the entire equipment is stably supported by a bracket. The sedimentation tank, mixing tank, and drug delivery hopper are fixed from top to bottom to form an integrated structure, eliminating the need for disassembly and transportation. This reduces the equipment's footprint, avoids the risk of sewage leakage during transportation, simplifies the operation process, and reduces the labor intensity of personnel.

[0022] 2. In the delivery component, the motor drives the connecting shaft to rotate, and the second spiral blade steadily pushes the phosphorus removal agent in the delivery hopper downwards. When it falls to the cone block through the guide hood, the guide plate disperses the agent. Simultaneously, the connecting shaft drives the stirring shaft to rotate, and the first spiral blade creates an upward thrust on the sewage in the straight cylinder, which contacts and disperses the diffused agent. At the same time, the rotating frame drives the stirring blade to stir the sewage in the mixing tank, and the scraper removes the sediment on the bottom of the mixing tank to prevent large-area sediment accumulation at the bottom. This improves the mixing efficiency of the phosphorus removal agent and the sewage, allowing the phosphorus removal reaction to proceed more fully and improving the phosphorus removal effect.

[0023] 3. In this invention, the electric cylinder of the lifting filter component is used as the driving power source, and multiple key actions are linked and controlled through a single power source: including driving the piston plate to slide downward, driving the wheel on the vertical connecting rod to move along the vertical guide part of the guide block, and cooperating with the gravity of the frustum valve block and the water pressure to realize the automatic opening of the outlet end of the mixing tank, completing the transportation of sewage to the sedimentation tank; continuing to push the piston plate downward, so that the wheel enters the inclined guide part, triggering the spring to release elastic potential energy, pushing the valve plate to move towards the axis of the water pipe, realizing the automatic sealing of the water pipe; after the sealing is completed, the piston plate continues to move downward, so that the water in the mixture permeates through the filter screen to the top of the piston plate, realizing solid-liquid separation; the lifting and lowering of the piston plate synchronously drives the side plate and drainage shell of the drainage component to move, ensuring that the clear liquid is discharged in real time, and realizing the adjustment of the height of the drainage shell according to the depth of the upper clear liquid.

[0024] 4. In this invention, after the upper clear liquid is discharged, the telescopic end of the electric cylinder retracts, driving the piston plate to return to its original position until the rotating wheel moves in the opposite direction along the inclined guide, compressing the spring and driving the valve plate to open. At the same time, the push rod is pushed to reset the frustum valve block and seal the outlet end of the mixing tank. Attached Figure Description

[0025] Figure 1 A schematic diagram of the overall structure of the integrated wastewater phosphorus removal equipment provided by the present invention;

[0026] Figure 2 This is another perspective view of the integrated wastewater phosphorus removal equipment of the present invention;

[0027] Figure 3 This is an overall cross-sectional view of the integrated wastewater phosphorus removal equipment of the present invention;

[0028] Figure 4 This is another cross-sectional view of the integrated wastewater phosphorus removal equipment of the present invention;

[0029] Figure 5 This is a schematic diagram of the straight section in this invention;

[0030] Figure 6 This is a schematic diagram of the rotating frame in this invention;

[0031] Figure 7 This is a partial structural diagram of the drug delivery component in this invention;

[0032] Figure 8 This is a schematic diagram of the structure of the lifting filter component in this invention;

[0033] Figure 9 This is a cross-sectional view of the transmission control component in this invention;

[0034] Figure 10 This is a schematic diagram of the structure of the water outlet pipe in this invention;

[0035] Figure 11 This is a partial sectional view of the present invention;

[0036] Figure 12 This is a schematic diagram of the structure at the side slot in this invention.

[0037] Labels in the diagram: 1. Support; 2. Sedimentation tank; 3. Mixing tank; 301. Outlet pipe; 4. Feeding hopper; 5. Mixing unit; 51. Stirring component; 511. Straight cylinder; 512. Stirring shaft; 513. First spiral blade; 514. Rotating frame; 515. Stirring blade; 516. Scraper; 52. Feeding component; 521. Guide hood; 522. Motor; 523. Connecting shaft; 524. Second spiral blade; 525. Guide blade; 526. Cone block; 6. Solid-liquid separation unit; 61. Lifting filter component; 611. Electric cylinder; 612. Piston plate; 613. Filter screen; 614. Passage... 62. Water pipe; 62. Transmission control components; 621. Horizontal slide groove; 622. Valve plate; 623. Horizontal clearance opening; 624. Vertical connecting rod; 625. Rotary wheel; 626. Outer sleeve; 627. Inner sleeve; 628. Spring; 629. Guide block; 6291. Oblique guide part; 6292. Vertical guide part; 63. Opening and closing components; 631. Frustum valve block; 632. Vertical clearance opening; 633. Baffle plate; 634. Push rod; 7. Drainage components; 701. Side groove opening; 702. Side plate; 703. Drainage shell; 704. Inner pipe body; 705. Outer pipe body; 8. Sewage pipe; 9. Transparent observation window. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0039] Example 1

[0040] Please refer to the following: Figures 1 to 7 An integrated wastewater phosphorus removal device includes a support frame 1, a sedimentation tank 2 fixedly connected to the top of the support frame 1, a mixing tank 3 fixedly connected to the top of the sedimentation tank 2, and a chemical feeding hopper 4 fixedly connected to the top of the mixing tank 3. A mixing unit 5 is installed inside the mixing tank 3. The mixing unit 5 is used to add phosphorus removal agent to the mixing tank 3 and improve the mixing efficiency of wastewater and phosphorus removal agent. A solid-liquid separation unit 6 is installed inside the sedimentation tank 2. The solid-liquid separation unit 6 is used to transport the mixed wastewater after mixing with phosphorus removal agent in the mixing tank 3 to the sedimentation tank 2 and separate the supernatant from the sediment. A drainage component 7 is installed on the solid-liquid separation unit 6. The drainage component 7 is used to adjust the height according to the depth of the supernatant and discharge the supernatant to the outside of the sedimentation tank 2. A drain pipe 8 is fixedly connected to the bottom of the sedimentation tank 2, and a valve is installed on the drain pipe 8.

[0041] In the above, bracket 1 provides a stable installation foundation for sedimentation tank 2, mixing tank 3, and chemical delivery hopper 4, forming an integrated structure that not only significantly reduces the floor space but also fundamentally avoids the risk of leakage during sewage transfer. It also simplifies the operation process and reduces the labor intensity of personnel. The integrated design of mixing unit 5, solid-liquid separation unit 6, and drainage components 7 realizes a fully integrated process for phosphorus removal agent addition and mixing, solid-liquid separation, and clear liquid discharge, improving the overall efficiency of phosphorus removal from sewage. The drain pipe 8 and matching valve at the bottom of sedimentation tank 2 are used to discharge the settled phosphorus precipitate, facilitating subsequent cleaning operations.

[0042] Furthermore, the mixing unit 5 includes a stirring component 51 and a drug delivery component 52; the stirring component 51 includes a straight cylinder 511, the top two sides of the straight cylinder 511 are fixedly connected to the inner wall of the mixing tank 3, a stirring shaft 512 is provided on the inner side of the straight cylinder 511, a first spiral blade 513 is fixedly sleeved on the outer side of the stirring shaft 512, a rotating frame 514 is rotatably sleeved on the outer side of the straight cylinder 511, the bottom end of the stirring shaft 512 extends out of the straight cylinder 511 and is fixedly connected to the frame wall of the rotating frame 514, a number of stirring blades 515 are evenly fixedly connected on the outer side of the rotating frame 514; a scraper 516 is fixedly connected to the bottom end of the rotating frame 514, and the scraper 516 slides and adheres to the inner bottom surface of the mixing tank 3.

[0043] In the above, when the stirring shaft 512 rotates, the first spiral blade 513 on the outer side can generate an upward thrust on the sewage in the straight cylinder 511. The stirring shaft 512 drives the outer rotating frame 514 to rotate synchronously. Several stirring blades 515 on the rotating frame 514 stir the sewage in the mixing tank 3 to achieve deep mixing of the agent and the sewage. The scraper 516 at the bottom of the rotating frame 514 slides and adheres to the inner bottom surface of the mixing tank 3. During the rotation process, it can effectively scrape off the agent or sediment deposited at the bottom of the tank, avoid local accumulation that affects the mixing effect, and further ensure the sufficiency of the phosphorus removal reaction.

[0044] Furthermore, the feeding component 52 includes a guide cover 521, the top of which is fixedly connected to the outlet end of the feeding hopper 4. A motor 522 is fixedly installed on the wall of the feeding hopper 4. A connecting shaft 523 is provided inside the guide cover 521. A cone block 526 is fixedly connected to the bottom end of the connecting shaft 523. The top of the connecting shaft 523 passes through the feeding hopper 4 and is fixedly connected to the rotating end of the motor 522. A second spiral blade 524 is fixedly sleeved on the outside of the connecting shaft 523. Several circumferentially arrayed guide plates 525 are fixedly connected to the outside of the cone block 526. The distance between the tops of two adjacent guide plates 525 is smaller than the distance between their bottoms, so that the phosphorus removal agent spreads out when falling from the top to the bottom. The second spiral blade 524 rotates in the opposite direction to the first spiral blade 513. The bottom end of the connecting shaft 523 is fixedly connected to the top end of the stirring shaft 512.

[0045] In the above, the fixed connection between the top of the guide cover 521 and the outlet of the feeding hopper 4 ensures the delivery of the agent; the motor 522 drives the connecting shaft 523 to rotate, which drives the second spiral blade 524 to stably push the dephosphorizing agent in the feeding hopper 4 downward. Because the distance between the top and bottom of the guide plates 525 on the outside of the cone block 526 is smaller than the distance between the bottom, the dephosphorizing agent disperses after falling; the second spiral blade 524 rotates in the opposite direction to the first spiral blade 513, and together with the upward water flow formed by the first spiral blade 513, it can further disperse the diffused agent and improve the mixing uniformity; the fixed connection between the connecting shaft 523 and the stirring shaft 512 realizes the linkage between the delivery and stirring, without the need for an additional power source, simplifying the structure.

[0046] Example 2

[0047] For further details, please refer to [link / reference]. Figures 1 to 11 Based on Embodiment 1, the solid-liquid separation unit 6 includes a lifting filter component 61, a transmission control component 62, and an opening and closing component 63. The lifting filter component 61 includes an electric cylinder 611, which is fixedly installed at the top of the sedimentation tank 2. A piston plate 612 is slidably connected to the inner side of the sedimentation tank 2. The telescopic end of the electric cylinder 611 passes through the sedimentation tank 2 and is fixedly connected to the top of the piston plate 612. Several filter screens 613 are fixedly installed through the piston plate 612, and a water pipe 614 is fixedly connected vertically through the piston plate 612.

[0048] In the above, the piston plate 612 has an annular groove on its outer side, and a sealing ring is installed in the annular groove. The sealing ring fits tightly against the inner wall of the sedimentation tank 2. The water pipe 614 provides a channel for transporting the mixed wastewater in the mixing tank 3 to the sedimentation tank 2.

[0049] Furthermore, the transmission control component 62 includes a transverse slide groove 621. Two transverse slide grooves 621 are symmetrically opened on both sides of the water pipe 614. A valve plate 622 is slidably connected to each of the two transverse slide grooves 621. A transverse clearance opening 623 communicating with the transverse slide groove 621 is opened through the top of the piston plate 612. A transversely sliding vertical connecting rod 624 is provided in the transverse clearance opening 623. A rotating wheel 625 is rotatably connected to the top of the vertical connecting rod 624. The bottom end of the vertical connecting rod 624 is fixedly connected to the top of the valve plate 622. An inner sleeve 627 is fixedly connected to one side of the vertical connecting rod 624. An outer sleeve 626 is slidably fitted on the outside of the inner sleeve 627. The bottom of the outer sleeve 626 is fixedly connected to the top of the piston plate 612. A spring 628 is provided in both the outer sleeve 626 and the inner sleeve 627. One end of the spring 628 is fixedly connected to the inner wall of one end of the outer sleeve 626. The other end of 28 is fixedly connected to the inner wall of one end of the inner sleeve 627; the bottom end of the mixing tank 3 is fixedly connected to the outlet end of its outlet pipe 301, and the water pipe 614 is sealed and slidably inserted into the outlet pipe 301. Two guide blocks 629 are symmetrically fixedly connected to both sides of the outlet pipe 301. The two guide blocks 629 are correspondingly set and matched with the two rotating wheels 625. The guide blocks 629 are provided with inclined guide parts 6291 and vertical guide parts 6292. The rotating wheels 625 are rolled on the corresponding inclined guide parts 6291 and vertical guide parts 6292. The bottom end of the vertical guide part 6292 and the top end of the inclined guide part 6291 are transitioned by a rounded corner. The distance from the top end of the inclined guide part 6291 to the axis of the outlet pipe 301 is greater than the distance from its bottom end to the axis of the outlet pipe 301. The inclined guide parts 6291 and vertical guide parts 6292 are used to guide the movement of the rotating wheels 625.

[0050] In the above-mentioned configuration, a sealing gasket is installed on the outer surface of the valve plate 622 to ensure the sliding and sealing between the valve plate 622 and the transverse sliding groove 621; the transverse clearance opening 623 provides space for the transverse sliding of the vertical connecting rod 624; the roller 625 at the top of the vertical connecting rod 624 rolls with the oblique guide part 6291 and the vertical guide part 6292 of the guide block 629, realizing precise guiding control of the valve plate 622; a sealing ring is installed at the sliding contact between the outer sleeve 626 and the inner sleeve 627 to ensure a tight seal during sliding. The valve plate 622 is sealed to prevent sewage from entering the interior. The elastic potential energy of the spring 628 can push the valve plate 622 to quickly reset, realizing the automatic sealing and opening of the water pipe 614. The fixed connection between the guide block 629 and the water outlet pipe 301 is sealed by welding. The rounded transition between the inclined guide part 6291 and the vertical guide part 6292 on the guide block 629 ensures the smooth movement of the wheel 625. The difference in the distance between the top and bottom of the inclined guide part 6291 and the axis of the water outlet pipe 301 realizes the lateral movement control of the valve plate 622.

[0051] Furthermore, the opening and closing component 63 includes a frustum valve block 631, which slides and seals with the outlet end of the mixing tank 3 to seal and block the outlet end of the mixing tank 3. Two vertical clearance openings 632 are symmetrically opened on both sides of the water outlet pipe 301. A vertically sliding push rod 634 is provided on the inner side of each of the two vertical clearance openings 632. One end of each push rod 634 is fixedly connected to the bottom end of the frustum valve block 631. The two push rods 634 correspond one-to-one with two rotating wheels 625. The wheel wall of the rotating wheel 625 abuts against the bottom of the corresponding push rod 634. A baffle 633 is fixedly sleeved on the outer side of each of the two push rods 634. The baffle 633 is correspondingly set with the vertical clearance opening 632. One side of the baffle 633 is sealed and slides against the inner wall of the water outlet pipe 301. The baffle 633 is used to block one end of the vertical clearance opening 632.

[0052] In the above, the sealing match between the frustum valve block 631 and the outlet end of the mixing tank 3 adopts a conical sealing structure. The sealing surface of the frustum valve block 631 is inlaid with a wear-resistant rubber sealing gasket, which effectively seals the outlet end of the mixing tank 3 and prevents insufficiently mixed sewage from flowing into the sedimentation tank 2 in advance. The vertical clearance port 632 on the outlet pipe 301 provides space for the vertical sliding of the push rod 634. The baffle 633 is sealed and slides against the inner wall of the outlet pipe 301. By installing a rubber sealing gasket on the contact surface of the baffle 633, sewage leakage from the vertical clearance port 632 is effectively prevented. The abutment cooperation between the push rod 634 and the rotating wheel 625, with the lifting power of the piston plate 612, realizes the automatic opening and closing of the frustum valve block 631 without manual operation.

[0053] Example 3

[0054] For further details, please refer to [link / reference]. Figures 1 to 12 Based on Embodiment 2, the drainage component 7 includes a side slot 701, which is opened through one side of the sedimentation tank 2. A side plate 702 is slidably connected inside the side slot 701. One side of the side plate 702 is fixedly connected to the outer wall of the piston plate 612. A drainage shell 703 is fixedly connected to the upper part of the side plate 702. The inlet end of the drainage shell 703 is flush with the top of the piston plate 612. An inner tube 704 communicating with the inside is fixedly connected to the bottom of the drainage shell 703. An outer tube 705 is slidably and sealingly fitted on the outside of the inner tube 704. The lower part of the outer tube 705 is fixedly connected to the wall of the support 1.

[0055] In the above-mentioned sealing sliding connection between the side plate 702 and the side groove 701, the sealing effect is improved by installing rubber sealing gaskets on the outer side of the side plate 702 or the inner wall of the side groove 701 to prevent the clear liquid from leaking from the side groove 701 and ensure the sealing performance of the sedimentation tank 2; the fixed connection between the drainage shell 703 and the side plate 702 is sealed by welding, and the weld is treated with anti-corrosion sealing to ensure that there is no leakage at the connection; the inlet end of the drainage shell 703 is flush with the top of the piston plate 612, which can collect the upper layer of clear liquid on the top of the piston plate 612 in real time and ensure that the clear liquid is discharged in time; the sliding sealing sleeve between the inner tube 704 and the outer tube 705 adopts multiple sealing rings, which are fitted in the annular groove opened on the outer side of the inner tube 704 to avoid clear liquid leakage.

[0056] Furthermore, a transparent observation window 9 is provided on the side wall of the sedimentation tank 2 to facilitate the operator's observation of the interior of the sedimentation tank 2.

[0057] As described above, the transparent observation window 9 can be made of tempered glass and is sealed and fixedly connected to the sedimentation tank 2; the transparent observation window 9 provides the operator with a visual observation channel.

[0058] Furthermore, the sedimentation tank 2 is also equipped with an openable and closable inspection door, which facilitates the operation of personnel to maintain and clean the inside of the sedimentation tank 2.

[0059] As described above, the inspection door provides a convenient operating channel for equipment maintenance. Operators can use the inspection door to regularly clean, inspect, and repair the filter screen 613, piston plate 612, valve plate 622, and their inner bottom inside the sedimentation tank 2.

[0060] Furthermore, both the motor 522 and the electric cylinder 611 are electrically connected to an external control switch via wires, and the motor 522 and the electric cylinder 611 are controlled to work by the control switch.

[0061] The working principle of the integrated wastewater phosphorus removal equipment provided by this invention is as follows:

[0062] In use, bracket 1 provides stable support for the entire equipment. Sedimentation tank 2, mixing tank 3, and chemical feeding hopper 4 are fixedly connected from top to bottom, forming an integrated structure. An appropriate amount of wastewater requiring phosphorus removal treatment is added to mixing tank 3, and an appropriate amount of phosphorus removal agent (powdered) is added to chemical feeding hopper 4. Motor 522 is started, and its rotating end drives connecting shaft 523 to rotate. Connecting shaft 523 drives the second spiral blade 524 to rotate synchronously, pushing the agent in chemical feeding hopper 4 downwards into guide hood 521. When the agent falls to cone block 526, because the distance between the top ends of two adjacent guide plates 525 is smaller than the distance between their bottom ends, the agent is guided by the guide plates 525 and gradually disperses as it falls. Connecting shaft 523 synchronously drives the agitator... The stirring shaft 512 rotates; the stirring shaft 512 rotates inside the straight cylinder 511, causing the first spiral blade 513 to rotate synchronously; this causes the wastewater entering the straight cylinder 511 to generate an upward thrust, and the wastewater discharged through the top of the straight cylinder 511 then spreads out and falls into the mixing tank 3, which can further disperse the falling agent and accelerate the mixing of the agent and wastewater; the stirring shaft 512 drives the rotating frame 514 to rotate synchronously; the rotating frame 514 drives the stirring blades 515 to stir the wastewater in the mixing tank 3, further improving the mixing efficiency of the phosphorus removal agent and wastewater; the scraper 516 at the bottom of the rotating frame 514 slides and adheres to the inner bottom surface of the mixing tank 3, scraping off the agent or sediment deposited at the bottom of the mixing tank 3 during the rotation process, preventing local accumulation from affecting the mixing effect.

[0063] After mixing is completed, the electric cylinder 611 is activated. The telescopic end of the electric cylinder 611 extends downward, pushing the piston plate 612 to slide downward along the inner side of the sedimentation tank 2. The vertical connecting rod 624 descends synchronously with the piston plate 612, and the rotating wheel 625 moves downward along the corresponding vertical guide 6292.

[0064] The frustum valve block 631 moves downward under its own weight and the pressure of the water above. At this time, the push rod 634 slides downward along the vertical relief opening 632, and the rotating wheel 625 remains against the bottom of the push rod 634 until the push rod 634 stops at the bottom of the vertical relief opening 632. The frustum valve block 631 opens, and the mixed wastewater in the mixing tank 3 enters the outlet pipe 301 through its outlet end, and then enters the water pipe 614 through the outlet pipe 301. At this time, the valve plate 622 is located in the horizontal sliding groove 621 and does not block the water pipe 614. The falling wastewater enters the sedimentation tank 2 through the water pipe 614. The baffle 633 on the outside of the push rod 634 moves synchronously with the push rod 634 and always slides and seals against the inner wall of the outlet pipe 301 to prevent wastewater from leaking from the vertical relief opening 632. The operator can observe the liquid level change of the mixed liquid through the transparent observation window 9 on the side wall of the sedimentation tank 2.

[0065] After all the mixed liquid is injected into the sedimentation tank 2, the electric cylinder 611 continues to push the piston plate 612 downward. At this time, the rotating wheel 625 enters the inclined guide 6291 from the vertical guide 6292. As the rotating wheel 625 moves downward along the inclined guide 6291, the elastic potential energy of the compressed spring 628 is gradually released. The spring 628 pushes the inner sleeve 627 and the vertical connecting rod 624 to move the valve plate 622 toward the axis of the water pipe 614 until the two valve plates 622 are completely in contact, sealing the bottom of the water pipe 614. At this time, the height of the sewage liquid level in the sedimentation tank 2 does not exceed the height of the piston plate 612. Then the telescopic end of the electric cylinder 611 continues to extend, pushing the piston plate 612 downward. Since the two valve plates 622 have sealed the bottom of the water pipe 614, the sediment located below the piston plate 612 will not enter the area above it through the water pipe 614.

[0066] As the piston plate 612 moves downward, it applies pressure to the mixture in the sedimentation tank 2; under the pressure, the water in the mixture permeates upward through the filter screen 613 on the piston plate 612 to the top of the piston plate 612, forming a clear upper layer.

[0067] Phosphorus precipitates in the mixture are intercepted by filter screen 613 and remain at the bottom of sedimentation tank 2 below piston plate 612. At the same time, as piston plate 612 continues to move downward, side plate 702 slides downward synchronously with piston plate 612, driving drainage shell 703 to move downward synchronously. The inlet end of drainage shell 703 is flush with the top of piston plate 612 and is always in contact with the upper clear liquid, ensuring that the clear liquid can continuously flow into drainage shell 703. The clear liquid in drainage shell 703 flows into outer pipe 705 through inner pipe 704 and is discharged, finally discharging the clear liquid outside sedimentation tank 2. Inner pipe 704 and outer pipe 705 maintain a sliding seal to prevent clear liquid leakage and adapt to the lifting stroke of piston plate 612.

[0068] After solid-liquid separation is completed, the telescopic end of the control electric cylinder 611 retracts, driving the piston plate 612 to return to its original position. Until the rotor 625 contacts the inclined guide 6291, under the guidance of the inclined guide 6291, the rotor 625 drives the vertical connecting rod 624 to move away from the axis of the water pipe 614, thereby causing the inner sleeve 627 to slide into the outer sleeve 626, and the spring 628 to be compressed. When the rotor 625 enters the vertical guide 6292 along the inclined guide 6291, the valve plate 622 is fully opened, and the rotor 625 moves further upward to contact the push rod 634, pushing the push rod 634 upward. This causes the push rod 634 to drive the frustum valve block 631 upward until the frustum valve block 631 re-seals the outlet end of the mixing tank 3, and the water pipe 614 is inserted into the outlet pipe 301.

[0069] Open the valve on the drain pipe 8 at the bottom of sedimentation tank 2. The phosphorus precipitate at the bottom of sedimentation tank 2 will be discharged through the drain pipe 8. After cleaning is completed, close the valve and the equipment will enter the next phosphorus removal cycle.

[0070] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An integrated wastewater phosphorus removal device, characterized in that, Includes a support frame, with a sedimentation tank fixedly connected to the top of the support frame, a mixing tank fixedly connected to the top of the sedimentation tank, and a drug delivery hopper fixedly connected to the top of the mixing tank; The mixing tank is equipped with a mixing unit; the mixing unit is used to add phosphorus removal agents into the mixing tank and improve the mixing efficiency of wastewater and phosphorus removal agents. The sedimentation tank is equipped with a solid-liquid separation unit; the solid-liquid separation unit is used to transport the mixed wastewater after the phosphorus removal agent is mixed in the mixing tank to the sedimentation tank, and to separate the supernatant from the sediment. The solid-liquid separation unit is equipped with a drainage component, which is used to adjust the height according to the depth of the upper clear liquid and discharge the upper clear liquid to the outside of the sedimentation tank. The solid-liquid separation unit includes a lifting filter component, a transmission control component, and an opening and closing component; the lifting filter component includes an electric cylinder, which is fixedly installed at the top of the sedimentation tank. A piston plate is provided on the inner side of the sedimentation tank. The telescopic end of the electric cylinder passes through the sedimentation tank and is fixedly connected to the top of the piston plate. Several filter screens are fixedly installed through the piston plate, and a water pipe is fixedly connected vertically through the piston plate. The transmission control component includes two horizontal sliding grooves symmetrically located on both sides of the water pipe. Each horizontal sliding groove contains a valve plate. A transverse clearance opening communicating with the horizontal sliding groove is provided through the top of the piston plate. A horizontally sliding vertical connecting rod is provided within the clearance opening. A rotating wheel is rotatably connected to the top of the vertical connecting rod, and the bottom of the vertical connecting rod is fixedly connected to the top of the valve plate. An inner sleeve is fixedly connected to one side of the vertical connecting rod, and an outer sleeve is slidably fitted onto the outside of the inner sleeve. The bottom of the outer sleeve is fixedly connected to the top of the piston plate. A spring is provided in both the outer and inner sleeves. One end of the spring is fixedly connected to the inner wall of one end of the outer sleeve, and the other end of the spring is fixedly connected to the inner wall of one end of the inner sleeve. A water outlet pipe is fixedly connected to the bottom of the mixing tank corresponding to its outlet end. The water pipe is located inside the water outlet pipe. Two guide blocks are symmetrically fixedly connected to both sides of the water outlet pipe. The two guide blocks correspond one-to-one with and are compatible with the two rotating wheels. Each guide block has an oblique guide portion and a vertical guide portion. The opening and closing component includes a frustum valve block. Two vertical clearance openings are symmetrically opened on both sides of the water outlet pipe. A vertically sliding push rod is provided on the inner side of each of the two vertical clearance openings. One end of each push rod is fixedly connected to the bottom end of the frustum valve block. The two push rods correspond one-to-one with two rotating wheels. The wheel wall of the rotating wheel abuts against the bottom of the corresponding push rod. A baffle is fixedly sleeved on the outer side of each of the two push rods. The baffle is correspondingly set to the vertical clearance opening and is used to block one end of the vertical clearance opening.

2. The integrated wastewater phosphorus removal equipment according to claim 1, characterized in that, The mixing unit includes a stirring component and a drug delivery component; the stirring component includes a straight cylinder, the top two sides of which are fixedly connected to the inner wall of the mixing tank, a stirring shaft is provided on the inner side of the straight cylinder, a first spiral blade is fixedly sleeved on the outer side of the stirring shaft, a rotating frame is rotatably sleeved on the outer side of the straight cylinder, the bottom end of the stirring shaft extends out of the straight cylinder and is fixedly connected to the frame wall of the rotating frame, and several stirring blades are evenly fixedly connected on the outer side of the rotating frame.

3. The integrated wastewater phosphorus removal equipment according to claim 2, characterized in that, The drug delivery component includes a guide cover, the top of which is fixedly connected to the outlet end of the drug delivery hopper. A motor is fixedly installed on the wall of the drug delivery hopper. A connecting shaft is provided inside the guide cover. A cone block is fixedly connected to the bottom end of the connecting shaft. The top end of the connecting shaft passes through the drug delivery hopper and is fixedly connected to the rotating end of the motor. A second spiral blade is fixedly sleeved on the outside of the connecting shaft. Several circumferentially arrayed guide plates are fixedly connected to the outside of the cone block. The distance between the top ends of two adjacent guide plates is smaller than the distance between their bottom ends. The second spiral blade rotates in the opposite direction to the first spiral blade. The bottom end of the connecting shaft is fixedly connected to the top end of the stirring shaft.

4. The integrated wastewater phosphorus removal equipment according to claim 3, characterized in that, The drainage component includes a side slot that extends through one side of the sedimentation tank. A side plate is installed inside the side slot. One side of the side plate is fixedly connected to the outer wall of the piston plate. A drainage shell is fixedly connected to the upper part of the side plate. The inlet end of the drainage shell is flush with the top of the piston plate. An inner tube communicating with the interior of the drainage shell is fixedly connected to the bottom of the drainage shell. An outer tube is slidably fitted on the outer side of the inner tube. The lower part of the outer tube is fixedly connected to the wall of the support.

5. The integrated wastewater phosphorus removal equipment according to claim 1, characterized in that, The rotating wheel is mounted on the corresponding inclined guide and vertical guide. The bottom end of the vertical guide and the top end of the inclined guide are connected by a rounded corner. The distance from the top end of the inclined guide to the axis of the water outlet pipe is greater than the distance from its bottom end to the axis of the water outlet pipe. The inclined guide and vertical guide are used to guide the movement of the rotating wheel.

6. The integrated wastewater phosphorus removal equipment according to claim 1, characterized in that, The sedimentation tank is equipped with a transparent observation window on its side wall, which allows operators to observe the inside of the sedimentation tank.

7. The integrated wastewater phosphorus removal equipment according to claim 2, characterized in that, A scraper is fixedly connected to the bottom of the rotating frame, and the scraper slides against the inner bottom surface of the mixing tank.

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