A sewage treatment device for municipal water supply and drainage

Abstract

This invention discloses a municipal water supply and drainage wastewater treatment device, relating to the field of multi-stage wastewater treatment technology. It includes a wastewater treatment tank with a pretreatment chamber, a primary treatment chamber, a secondary treatment chamber, and a tertiary treatment chamber. The wastewater treatment tank is connected to a dosing assembly and a stirring and heating assembly. The stirring and heating assembly includes a stirring motor, a stirring element mounted on the drive shaft of the stirring motor, a first stirring blade rotatably connected to the stirring element, and a heating plate slidably connected to the stirring element. This invention, through the coordinated use of the stirring motor, the stirring element, and the first stirring blade, ensures more uniform dispersion of the chemicals in the wastewater, thereby increasing the reaction rate. Heating the wastewater in the secondary treatment chamber with the heating plate promotes the wastewater treatment reaction of temperature-sensitive chemicals, further improving wastewater treatment efficiency. Therefore, this invention solves the technical problem of low efficiency in multi-stage wastewater treatment in existing wastewater treatment equipment.

Description

Technical Field

[0001] This invention relates to the field of multi-stage wastewater treatment technology, and more particularly to a wastewater treatment device for municipal water supply and drainage. Background Technology

[0002] With the continuous advancement of urbanization, municipal water supply and drainage systems have become an important component of urban infrastructure. Within these systems, wastewater treatment equipment plays a crucial role, ensuring the effective treatment of urban sewage and protecting the ecological environment and residents' health. Municipal wastewater mainly includes domestic sewage, industrial wastewater, and rainwater, which contain large amounts of organic matter, heavy metals, suspended solids, and pathogenic microorganisms, easily causing serious pollution to water bodies and ecosystems.

[0003] In existing technologies, municipal water supply and drainage are treated in multiple stages using wastewater treatment equipment to purify the wastewater. In the secondary treatment stage, chemicals are added to the equipment, combined with agitation, to remove suspended solids, colloidal substances, and some organic matter from the water. However, limitations in the agitation structure and the dissolution rate of the chemicals result in a slow reaction rate, leading to lengthy secondary treatment times and consequently, low efficiency in multi-stage wastewater treatment. Summary of the Invention

[0004] The purpose of this invention is to provide a sewage treatment device for municipal water supply and drainage, which solves the technical problem of low efficiency in multi-stage sewage treatment in existing sewage treatment devices.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A municipal water supply and drainage sewage treatment device includes a sewage treatment tank, which has a pretreatment chamber, a primary treatment chamber, a secondary treatment chamber, and a tertiary treatment chamber for sequentially treating sewage in multiple stages; the sewage treatment tank is connected to a dosing component and a stirring and heating component, the dosing component is used to add chemicals to the sewage in the secondary treatment chamber, and the stirring and heating component is used to stir and heat the sewage after adding chemicals.

[0007] The stirring and heating assembly includes a stirring motor, a stirring element mounted on the drive shaft of the stirring motor, a first stirring blade rotatably connected to the end of the stirring element away from the drive shaft, and a heating plate slidably connected to the stirring element.

[0008] Both the agitator and the first agitator blade are used to agitate the wastewater in the secondary treatment chamber, and the heating plate is used to heat the wastewater in the secondary treatment chamber.

[0009] Optionally, the stirring component includes at least one stirring rod and a stirring wheel fixedly sleeved with the drive shaft. The stirring wheel is provided with at least one first mounting surface and a first threaded hole corresponding to and penetrating the first mounting surface. The end of the stirring rod near the drive shaft is threaded into the first threaded hole.

[0010] Optionally, the stirring rod is provided with a groove, a sliding member is slidably fitted in the groove, the sliding member is provided with a mounting hole, and one end of the heating plate located in the groove is fixedly installed in the mounting hole, with a gap between the heating plate and the inner wall of the groove.

[0011] The chute is closed at one end near the stirring wheel, and the chute is connected to the end face of the stirring rod away from the stirring wheel.

[0012] Optionally, the chute is connected to one side wall of the stirring rod relative to the first stirring blade, and the sliding member includes a first sliding part and a second sliding part that are integrally formed, the first sliding part being L-shaped and the second sliding part being cylindrical.

[0013] The mounting hole is provided on the first sliding part, the first sliding part is slidably connected to the groove, the end of the second sliding part away from the first sliding part extends out of the groove, and a second stirring blade is rotatably connected to the second sliding part.

[0014] Optionally, a first limiting surface and a second limiting surface are provided opposite to each other in the chute, the first limiting surface being adjacent to the stirring wheel and the second limiting surface being adjacent to the first stirring blade;

[0015] The stirring rod has a notch at one end near the first stirring blade to facilitate the installation of the sliding component. The notch is connected to one side wall of the stirring rod relative to the first stirring blade.

[0016] Optionally, the chute is provided with a first inclined surface, and the height of the first inclined surface in the second direction gradually increases along the direction from the stirring wheel to the first stirring blade;

[0017] The first sliding part is provided with a second inclined surface that fits against the first inclined surface, and the stirring rod has a first through hole that communicates with the first inclined surface at one end relative to the heating plate.

[0018] Optionally, the first stirring blade is provided with at least one first flow hole, the second stirring blade is provided with at least one second flow hole, and the stirring rod is provided with a second through hole and a third through hole arranged at intervals.

[0019] Wherein, one end of the second through hole is connected to the slide groove, and the other end of the second through hole is connected to one side wall of the stirring rod relative to the second stirring blade; one end of the third through hole is connected to the first through hole, and the other end of the third through hole is connected to one side wall of the stirring rod relative to the second stirring blade.

[0020] Optionally, the wastewater treatment tank is equipped with three pumping components, which are arranged in a straight line along the first direction of the wastewater treatment tank.

[0021] The first pumping assembly is used to pump the pretreated wastewater in the pretreatment chamber to the primary treatment chamber; the second pumping assembly is used to pump the primary treated wastewater in the primary treatment chamber to the secondary treatment chamber; and the third pumping assembly is used to pump the secondary treated wastewater in the secondary treatment chamber to the tertiary treatment chamber.

[0022] Optionally, the wastewater treatment tank is equipped with an inlet pipe that communicates with the pretreatment chamber. The pretreatment chamber is equipped with a filter frame for filtering the wastewater flowing out of the inlet pipe. The filter frame is spaced apart from the bottom wall of the pretreatment chamber, and the filter frame has a plurality of filter holes.

[0023] The wastewater treatment tank is also equipped with at least one outlet pipe that communicates with the tertiary treatment chamber, and the outlet pipe is equipped with a discharge valve for controlling the on / off state of the outlet pipe.

[0024] Optionally, the bottom of the sewage treatment tank is equipped with several pulleys, and the sewage treatment tank is arranged in a rectangular parallelepiped shape.

[0025] A first reinforcing rib and a second reinforcing rib are fixedly installed on at least one outer side wall of the sewage treatment tank, and at least one third reinforcing rib is fixedly installed on the outer bottom wall of the sewage treatment tank. The first reinforcing rib, the second reinforcing rib, and the third reinforcing rib are arranged perpendicular to each other.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] This invention provides a municipal water supply and drainage wastewater treatment device. By setting up a pretreatment chamber, a primary treatment chamber, a secondary treatment chamber, and a tertiary treatment chamber, wastewater undergoes step-by-step purification through different treatment units after entering the equipment. This improves the systematic nature and efficiency of wastewater treatment, effectively enhancing the overall effluent quality. The addition of a dosing assembly allows for precise dosing of chemicals after the wastewater enters the secondary treatment chamber, facilitating a full reaction between the chemicals and the wastewater, improving flocculation and sedimentation effects, and enhancing pollutant removal capacity. The coordinated use of a stirring motor, stirring components, and a first stirring blade ensures thorough stirring of the chemically dosed wastewater, resulting in more uniform dispersion of the chemicals and promoting comprehensive contact between the chemicals and pollutants, thus increasing the reaction rate. A slidingly connected heating plate on the stirring components heats the wastewater in the secondary treatment chamber, effectively increasing the wastewater temperature, optimizing the reaction environment, and promoting the wastewater treatment reaction of temperature-sensitive chemicals, thereby further improving wastewater treatment efficiency. By integrating the agitator and heating plate into a single design, the movement of both components is achieved through a single agitator motor, resulting in a more compact structure. This design ensures thorough mixing of wastewater while simultaneously achieving simultaneous heating, reducing energy consumption and equipment complexity, and demonstrating good practicality and potential for widespread application. Therefore, this invention solves the technical problem of low efficiency in multi-stage wastewater treatment in existing wastewater treatment equipment. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0030] Figure 1 A three-dimensional structural diagram of a municipal water supply and drainage sewage treatment device provided in an embodiment of the present invention;

[0031] Figure 2 This is a top view of a sewage treatment device for municipal water supply and drainage provided in an embodiment of the present invention;

[0032] Figure 3This is a front view structural diagram of a municipal water supply and drainage sewage treatment device provided in an embodiment of the present invention;

[0033] Figure 4 A schematic diagram of the structure of a stirring and heating component in a municipal water supply and drainage sewage treatment device provided in an embodiment of the present invention;

[0034] Figure 5 This is a partial exploded structural diagram of a stirring and heating component in a municipal water supply and drainage sewage treatment device, provided as an embodiment of the present invention.

[0035] Figure 6 A three-dimensional structural diagram of a stirring rod in a municipal water supply and drainage sewage treatment device provided in an embodiment of the present invention;

[0036] Figure 7 A schematic cross-sectional view of a stirring rod in a municipal water supply and drainage sewage treatment device provided in an embodiment of the present invention;

[0037] Figure 8 A front view of a stirring rod in a municipal water supply and drainage sewage treatment device provided in an embodiment of the present invention;

[0038] Figure 9 for Figure 8 A schematic diagram of the AA cross-sectional structure;

[0039] Figure 10 A three-dimensional structural diagram of a sliding component in a municipal water supply and drainage sewage treatment device provided in an embodiment of the present invention;

[0040] Figure 11 A three-dimensional structural diagram of a pumping component in a municipal water supply and drainage sewage treatment device provided in an embodiment of the present invention;

[0041] Figure 12 This is a schematic diagram of the structure of a sewage treatment tank in a municipal water supply and drainage sewage treatment device provided in an embodiment of the present invention.

[0042] Illustration:

[0043] 10. Wastewater treatment tank; 11. Pretreatment chamber; 12. Primary treatment chamber; 13. Secondary treatment chamber; 14. Tertiary treatment chamber; 151. Inlet pipe; 152. Outlet pipe; 153. Discharge valve; 16. Filter frame; 161. Filter hole; 17. Pulley; 181. First reinforcing rib; 182. Second reinforcing rib; 183. Third reinforcing rib; 20. Dosing assembly; 30. Stirring and heating assembly; 31. Stirring motor; 311. Drive shaft; 32. First stirring blade; 321. First flow hole; 33. Heating plate; 34. Stirring rod; 341 3411. Slide groove; 3412. First limiting surface; 3413. Second limiting surface; 3414. First inclined surface; 342. Notch; 343. First through hole; 344. Second through hole; 345. Third through hole; 35. Stirring wheel; 351. First mounting plane; 352. First threaded hole; 36. Sliding component; 361. First sliding part; 3611. Second inclined surface; 3612. Mounting hole; 362. Second sliding part; 37. Second stirring blade; 371. Second flow hole; 40. Water pumping assembly; 41. Water pumping cover; 42. Water pump; 43. Delivery pipe. Detailed Implementation

[0044] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0045] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally in the connection.

[0046] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0047] This invention provides a sewage treatment device for municipal water supply and drainage, such as... Figures 1 to 12As shown, the system includes a wastewater treatment tank 10, which has a pretreatment chamber 11, a primary treatment chamber 12, a secondary treatment chamber 13, and a tertiary treatment chamber 14 for sequentially treating wastewater in multiple stages. The wastewater treatment tank 10 is connected to a dosing assembly 20 and a stirring and heating assembly 30. The dosing assembly 20 is used to add chemicals to the wastewater in the secondary treatment chamber 13, and the stirring and heating assembly 30 is used to stir and heat the wastewater after adding chemicals.

[0048] The stirring and heating assembly 30 includes a stirring motor 31, a stirring element is mounted on the drive shaft 311 of the stirring motor 31, a first stirring blade 32 is rotatably connected to the end of the stirring element away from the drive shaft 311, and a heating plate 33 is slidably connected to the stirring element; in this embodiment, the drive shaft 311 is arranged along the second direction.

[0049] Both the agitator and the first agitator blade 32 are used to agitate the wastewater in the secondary treatment chamber 13, and the heating plate 33 is used to heat the wastewater in the secondary treatment chamber 13. In this embodiment, the heating plate 33 is a structure known in the art and will not be described in detail here.

[0050] It should be noted that the municipal water supply and drainage sewage treatment equipment provided by this invention, by setting up a pretreatment chamber 11, a primary treatment chamber 12, a secondary treatment chamber 13, and a tertiary treatment chamber 14, allows sewage to undergo step-by-step purification through different treatment units after entering the equipment, improving the systematic nature and efficiency of sewage treatment and effectively enhancing the overall effluent quality. By setting up a dosing component 20, chemicals can be precisely added after the sewage enters the secondary treatment chamber 13, which is conducive to achieving a full reaction between the chemicals and the sewage, improving the treatment effects such as flocculation and sedimentation, and enhancing the removal capacity of pollutants. Through the coordinated use of the stirring motor 31, the stirring element, and the first stirring blade 32, the sewage after chemical addition can be fully stirred, making the chemicals more evenly dispersed in the sewage, promoting comprehensive contact between the chemicals and pollutants, and increasing the reaction rate. By setting a slidingly connected heating plate 33 on the stirring element, the sewage in the secondary treatment chamber 13 can be heated, effectively increasing the sewage temperature, optimizing the reaction environment, and promoting the sewage treatment reaction of temperature-sensitive chemicals, thereby further improving the sewage treatment efficiency. By integrating the stirring component and heating plate 33, the movement of both is achieved through a single stirring motor 31, resulting in a more compact structure. This ensures thorough mixing of wastewater while simultaneously achieving simultaneous heating, reducing energy consumption and equipment complexity, and demonstrating good practicality and potential for widespread application. Therefore, this invention solves the technical problem of low efficiency in multi-stage wastewater treatment in existing wastewater treatment equipment.

[0051] like Figures 1 to 12As shown, the stirring component includes at least one stirring rod 34 and a stirring wheel 35 fixedly sleeved with the drive shaft 311. The stirring wheel 35 has at least one first mounting surface 351 and a first threaded hole 352 corresponding to and communicating with the first mounting surface 351. One end of the stirring rod 34 near the drive shaft 311 is threaded into the first threaded hole 352. In this embodiment, the number of stirring rods 34 and first mounting surfaces 351 is set to three. When the first mounting surface 351 abuts against the stirring rod 34, the stirring rod 34 and the stirring wheel 35 are tightly threadedly connected, and the heating plate 33 is vertically arranged along the second direction. Since the stirring wheel 35 is threadedly connected to the stirring rod 34, it is convenient to disassemble and assemble the stirring component. In addition, by turning and adjusting the stirring rod 34, the installation position of the heating plate 33 can be adjusted so that the heating plate 33 is set in an inclined state.

[0052] In this embodiment, the stirring rod 34 and the stirring wheel 35 are connected by a threaded fastening. When the stirring rod 34 abuts against the first mounting surface 351 of the stirring wheel 35, a stable connection structure is formed, which can effectively resist the torque and impact force generated during the stirring process, ensuring the reliability and durability of the stirring components during long-term operation. The threaded connection between the stirring rod 34 and the stirring wheel 35 makes the installation state of the heating plate 33 adjustable, thereby adjusting the heating range and heat conduction direction according to actual wastewater treatment needs, improving heat energy utilization and heating uniformity to adapt to different water qualities or reaction conditions; this solves the technical problem of the inconvenience in adjusting the heating range and heat conduction direction of traditional heating plates 33.

[0053] like Figures 4 to 9 As shown, the stirring rod 34 is provided with a groove 341, and a sliding member 36 is slidably fitted in the groove 341. The sliding member 36 is provided with a mounting hole 3612. One end of the heating plate 33 located in the groove 341 is fixedly installed in the mounting hole 3612. The heating plate 33 is separated from the inner wall of the groove 341. The end of the groove 341 near the stirring wheel 35 is closed, and the end face of the groove 341 is connected to the end face of the stirring rod 34 away from the stirring wheel 35.

[0054] Specifically, when the stirring motor 31 starts working, the drive shaft 311 drives the stirring wheel 35 to rotate. Since the stirring rod 34 is threadedly connected to the stirring wheel 35, the stirring wheel 35 drives the stirring rod 34 to rotate. Because the first stirring blade 32 is rotatably connected to the stirring rod 34, the stirring rod 34 then drives the first stirring blade 32 to rotate around the drive shaft 311. Simultaneously, under the action of the water flow, the first stirring blade 32 rotates, enhancing the disturbance of the wastewater in the secondary treatment chamber 13, ensuring thorough mixing of the reagent and wastewater, and improving the wastewater purification rate. While the stirring rod 34 rotates, the sliding member 36 and the heating plate 33 are both subjected to centrifugal force, causing the heating plate 33 to move along a direction close to the first stirring blade 32. Without relying on additional drive, the heating plate 33 moves and heats simultaneously, increasing the heating area of ​​the heating plate 33 and solving the technical problem of moving and heating the heating plate 33 without adding a new drive. Meanwhile, by moving the heating plate 33, the disturbance of the sewage in the secondary treatment chamber 13 can be further enhanced.

[0055] like Figures 4 to 9 As shown, the chute 341 and the stirring rod 34 are connected to one side wall of the first stirring blade 32. The sliding member 36 includes a first sliding part 361 and a second sliding part 362, which are integrally formed. The first sliding part 361 is L-shaped and the second sliding part 362 is cylindrical.

[0056] Mounting hole 3612 is provided on first sliding part 361. First sliding part 361 is slidably connected in slide groove 341. One end of second sliding part 362 away from first sliding part 361 extends out of slide groove 341. Second stirring blade 37 is rotatably connected to second sliding part 362.

[0057] Specifically, when the stirring rod 34 rotates, it simultaneously drives the second stirring blade 37 to rotate along the direction surrounding the drive shaft 311; under the action of centrifugal force, the second sliding part 362 drives the heating plate 33 and the second stirring blade 37 to move along the direction close to the first stirring blade 32; in addition, under the action of water flow, both the first stirring blade 32 and the second stirring blade 37 rotate, so that the sewage in the secondary treatment chamber 13 forms a gradient mixing flow field, so that the agent is quickly dispersed and avoids local over- or under-dosage; so that the heating heat of the sewage is evenly distributed and prevents local overheating or low temperature dead zones.

[0058] like Figures 4 to 9 As shown, a first limiting surface 3411 and a second limiting surface 3412 are provided opposite to each other in the chute 341. The first limiting surface 3411 is arranged adjacent to the stirring wheel 35, and the second limiting surface 3412 is arranged adjacent to the first stirring blade 32.

[0059] The stirring rod 34 has a notch 342 through one end near the first stirring blade 32 for easy installation of the sliding member 36. The notch 342 is in communication with the side wall of the stirring rod 34 relative to the first stirring blade 32.

[0060] It should be noted that the first limiting surface 3411 restricts the position of the sliding member 36, preventing motion interference with the second stirring blade 37 and ensuring its smooth rotation. The second limiting surface 3412 limits the travel of the sliding member 36, preventing it from detaching from the groove 341. The notch 342 facilitates the placement of the sliding member 36, allowing it to be smoothly inserted into the groove 341.

[0061] like Figures 4 to 9 As shown, the chute 341 is provided with a first inclined surface 3413, and the height of the first inclined surface 3413 in the second direction gradually increases along the direction from the stirring wheel 35 to the first stirring blade 32.

[0062] The first sliding part 361 is provided with a second inclined surface 3611 that fits against the first inclined surface 3413, and the stirring rod 34 is provided with a first through hole 343 that communicates with the first inclined surface 3413 at one end relative to the heating plate 33.

[0063] It should be noted that, through the coordinated use of the first inclined surface 3413 and the second inclined surface 3611, as the sliding member 36 moves closer to the first stirring blade 32, the height of the heating plate 33 gradually increases in the second direction, further expanding the heating area of ​​the heating plate 33; conversely, as the sliding member 36 moves away from the first stirring blade 32, the height of the heating plate 33 gradually decreases in the second direction. When the stirring rod 34 rotates, the heating plate 33 can move in multiple directions, solving the technical problem of the small heating area of ​​traditional heating plates 33.

[0064] like Figures 4 to 9 As shown, the first stirring blade 32 is provided with at least one first flow hole 321, the second stirring blade 37 is provided with at least one second flow hole 371, and the stirring rod 34 is provided with a second through hole 344 and a third through hole 345 arranged at intervals.

[0065] One end of the second through hole 344 is connected to the slide groove 341, and the other end of the second through hole 344 is connected to one side wall of the stirring rod 34 relative to the second stirring blade 37; one end of the third through hole 345 is connected to the first through hole 343, and the other end of the third through hole 345 is connected to one side wall of the stirring rod 34 relative to the second stirring blade 37.

[0066] It should be noted that the first stirring blade 32 is provided with at least one first flow hole 321, and the second stirring blade 37 is provided with at least one second flow hole 371. During the stirring process, the sewage can form a vertical penetrating flow between different levels, thereby breaking up local stagnant water zones and improving the flow uniformity and overall reaction efficiency. The first through hole 343, the second through hole 344, and the third through hole 345 together form a three-dimensional interlaced sewage flow channel, which can guide the sewage to flow in different directions during the stirring and rotation process, effectively enhancing the thermal convection capacity of the water body and improving the heat transfer efficiency of the heating plate 33 to the sewage. The second through hole 344 and the third through hole 345 are arranged at intervals, which helps to maintain the structural strength while realizing orderly fluid conduction, ensuring a reasonable flow path for sewage inside the stirring components, thereby improving the operating efficiency of the equipment and optimizing the synergistic treatment effect of stirring and heating.

[0067] like Figures 1 to 11 As shown, three pumping components 40 are installed inside the sewage treatment tank 10, and the three pumping components 40 are arranged in a straight line along the first direction of the sewage treatment tank 10.

[0068] The first pumping assembly 40 is used to pump the pretreated wastewater in the pretreatment chamber 11 to the primary treatment chamber 12. The second pumping assembly 40 is used to pump the primary treated wastewater in the primary treatment chamber 12 to the secondary treatment chamber 13. The third pumping assembly 40 is used to pump the secondary treated wastewater in the secondary treatment chamber 13 to the tertiary treatment chamber 14. Specifically, the pumping assembly 40 includes a pumping hood 41, a pumping pump 42 is installed inside the pumping hood 41, and a delivery pipe 43 is installed on the pumping pump 42.

[0069] It should be noted that by arranging three pumping components 40 in a straight line along the first direction within the sewage treatment tank 10, sewage can be sequentially transported from the pretreatment chamber 11, the primary treatment chamber 12, and the secondary treatment chamber 13 to the next treatment chamber 12, achieving graded sewage transport. This effectively improves the automation and stability of the treatment process and avoids the risk of sewage stagnation or backflow. Because the pumping components 40 are arranged in a straight line along the first direction of the sewage treatment tank 10, this sewage treatment equipment features a compact layout and small footprint, which is beneficial for integrated design and installation, making it particularly suitable for space-constrained applications in municipal construction. The pumping hood 41 effectively protects the pumping pump 42, preventing solid impurities from clogging the pump inlet and improving the operational stability and lifespan of the pumping components 40; it also ensures smooth connection of the conveying pipe 43, guaranteeing efficient transfer of sewage between the treatment chambers.

[0070] like Figures 1 to 12As shown, the sewage treatment tank 10 is equipped with an inlet pipe 151 that communicates with the pretreatment chamber 11. The pretreatment chamber 11 is equipped with a filter frame 16 for filtering the sewage flowing out of the inlet pipe 151. The filter frame 16 is separated from the bottom wall of the pretreatment chamber 11, and a number of filter holes 161 are opened on the filter frame 16.

[0071] The wastewater treatment tank 10 is also equipped with at least one outlet pipe 152 that communicates with the tertiary treatment chamber 14, and the outlet pipe 152 is equipped with a discharge valve 153 for controlling the on / off state of the outlet pipe 152.

[0072] It should be noted that by installing a filter frame 16 in the pretreatment chamber 11 and leaving a gap between the filter frame 16 and the bottom wall of the pretreatment chamber 11, larger impurities in the influent can be effectively intercepted, preventing them from entering subsequent treatment units, reducing the load on subsequent treatment chambers, and helping to extend the service life of the equipment and improve treatment efficiency. By setting an influent pipe 151 communicating with the pretreatment chamber 11 and at least one effluent pipe 152 communicating with the tertiary treatment chamber 14, the orderly inflow and compliant discharge of wastewater are ensured. By installing a discharge valve 153 on the effluent pipe 152, the timing and flow rate of effluent discharge can be flexibly controlled to meet different treatment needs and improve the controllability and practicality of the entire treatment system.

[0073] like Figures 1 to 12 As shown, the bottom of the sewage treatment tank 10 is equipped with several pulleys 17, and the sewage treatment tank 10 has a rectangular parallelepiped structure. At least one outer wall of the sewage treatment tank 10 is fixedly installed with a first reinforcing rib 181 and a second reinforcing rib 182, and at least one third reinforcing rib 183 is fixedly installed on the outer bottom wall of the sewage treatment tank 10. The first reinforcing rib 181, the second reinforcing rib 182 and the third reinforcing rib 183 are arranged perpendicular to each other.

[0074] It should be noted that by installing several pulleys 17 at the bottom of the sewage treatment tank 10, the entire unit can be moved without disassembling the equipment. This facilitates rapid deployment and repositioning of the equipment at construction sites, maintenance areas, or multi-point treatment areas, significantly improving the equipment's flexibility and mobility. The rectangular structure of the sewage treatment tank 10 improves space utilization and facilitates modular arrangement. The multi-dimensional reinforcement structure, consisting of the first reinforcing rib 181, the second reinforcing rib 182, and the third reinforcing rib 183, effectively enhances the equipment's compressive and torsional resistance, improving the overall structural strength and durability of the tank.

[0075] Working principle: Before operation, the first sliding part 361 abuts against the first limiting surface 3411, and the heating plate 33 moves away from the first stirring blade 32;

[0076] During operation, wastewater is injected into the pretreatment chamber 11 through the inlet pipe 151. After pretreatment, the wastewater in the pretreatment chamber 11 is pumped to the primary treatment chamber 12 through the first pumping component 40. After primary treatment, the wastewater in the primary treatment chamber 12 is pumped to the secondary treatment chamber 13 through the second pumping component 40.

[0077] When the dosing assembly 20 adds the reagent to the wastewater in the secondary treatment chamber 13, the stirring motor 31 and the heating plate 33 start working, driving the drive shaft 311 to rotate clockwise or counterclockwise. The drive shaft 311 drives the stirring wheel 35 to rotate. Since the stirring rod 34 is threadedly fastened to the stirring wheel 35, the stirring wheel 35 drives the stirring rod 34 to rotate, which in turn drives the first stirring blade 32, the second stirring blade 37, and the heating plate 33 to rotate around the drive shaft 311. This enhances the disturbance of the wastewater in the secondary treatment chamber 13, allowing the reagent to mix and react quickly, thus solving the technical problem of low efficiency in multi-stage wastewater treatment equipment in the prior art.

[0078] When the first stirring blade 32 and the second stirring blade 37 rotate along the direction surrounding the drive shaft 311, under the action of the water flow, the first stirring blade 32 and the second stirring blade 37 rotate, causing the sewage in the secondary treatment chamber 13 to form a gradient mixing flow field, which further enhances the disturbance of the sewage in the secondary treatment chamber 13, and makes the reagents mix and react faster.

[0079] Furthermore, while the stirring rod 34 rotates, the sliding member 36, slidably connected to the groove 341, slides within the groove 341 under centrifugal force. This causes the sliding member 36 to drive the second stirring blade 37 and the heating plate 33 to move along the direction closer to the first stirring blade 32. The second stirring blade 37 moves in multiple directions, thus allowing it to stir while moving, solving the technical problem of a small stirring area for the second stirring blade 37. Simultaneously, due to the combined use of the first inclined surface 3413 and the second inclined surface 3611, as the sliding member 36 moves closer to the first stirring blade 32, it drives the heating plate 33 to rise along the second direction, allowing the heating plate 33 to stir while moving. The heating plate 33 also moves in multiple directions, making the heating of wastewater more uniform, thus solving the technical problems of moving the heating plate 33 for heating and expanding the heating area.

[0080] By setting the first through hole 343, the second through hole 344, and the third through hole 345, not only can the weight of the stirring rod 34 be reduced, but the water flow can also be guided, the turbulence of sewage can be enhanced, and the formation of mixing dead zones can be prevented. At the same time, the vibration of the stirring rod 34 can also be reduced, making the stirring of the stirring rod 34 smoother. Since the first through hole 343 is connected to the first inclined surface 3413, it can prevent the accumulation of sediment on the first inclined surface 3413, so that the sliding member 36 can slide smoothly. Since the third through hole 345 is connected to the first through hole 343, when the first through hole 343 is blocked by sediment, the water flow through the third through hole 345 flushes the first through hole 343, preventing the first through hole 343 from being blocked, thus solving the technical problem of the first through hole 343 being blocked.

[0081] After operation, the stirring motor 31 and the heating plate 33 stop working. Due to the setting of the first inclined surface 3413 and the second inclined surface 3611, the sliding member 36 slides down along the second direction under the action of gravity, driving the second stirring fan blade 37 and the heating plate 33 to move synchronously until the second sliding part 362 abuts against the first limiting surface 3411.

[0082] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sewage treatment apparatus for municipal water supply and sewerage, characterized by comprising: The sewage treatment box (10) has a pretreatment chamber (11), a first-stage treatment chamber (12), a second-stage treatment chamber (13) and a third-stage treatment chamber (14) for sequentially treating sewage in multiple stages respectively; the sewage treatment box (10) is connected with a dosing assembly (20) and a stirring and heating assembly (30), the dosing assembly (20) is used for dosing reagents into the sewage in the second-stage treatment chamber (13), and the stirring and heating assembly (30) is used for stirring and heating the sewage after the reagents are added; The stirring and heating assembly (30) comprises a stirring motor (31), a driving shaft (311) of the stirring motor (31) is provided with a stirring piece, a first stirring vane (32) is rotationally connected to one end of the stirring piece away from the driving shaft (311), and a heating plate (33) is slidingly connected to the stirring piece; The stirring piece and the first stirring vane (32) are used for stirring the sewage in the second-stage treatment chamber (13), and the heating plate (33) is used for heating the sewage in the second-stage treatment chamber (13); The stirring piece comprises at least one stirring rod (34) and a stirring wheel (35) fixedly sleeved with the driving shaft (311), the stirring rod (34) is provided with a sliding groove (341) therein, a sliding piece (36) is slidingly fitted in the sliding groove (341), the sliding piece (36) is provided with a mounting hole (3612) therein, and one end of the heating plate (33) in the sliding groove (341) is fixedly installed in the mounting hole (3612); the sliding piece (36) comprises a first sliding part (361) and a second sliding part (362) which are integrally formed, the first sliding part (361) is L-shaped, and the second sliding part (362) is cylindrical; The mounting hole (3612) is arranged on the first sliding part (361), the first sliding part (361) is slidingly connected in the sliding groove (341), one end of the second sliding part (362) away from the first sliding part (361) extends out of the sliding groove (341), and the second sliding part (362) is rotationally connected with a second stirring vane (37); the sliding groove (341) is provided with a first inclined surface (3413), the height of the first inclined surface (3413) gradually increases in the direction from the stirring wheel (35) to the first stirring vane (32); and the first sliding part (361) is provided with a second inclined surface (3611) abutting against the first inclined surface (3413). The end of the stirring rod (34) relative to the heating plate (33) is provided with a first through hole (343) penetrating the first inclined surface (3413); the stirring rod (34) is provided with a second through hole (344) and a third through hole (345) arranged at intervals; one end of the second through hole (344) is communicated with the chute (341), and the other end of the second through hole (344) penetrates the side wall of the stirring rod (34) relative to the second stirring fan blade (37); one end of the third through hole (345) penetrates the first through hole (343), and the other end of the third through hole (345) penetrates the side wall of the stirring rod (34) relative to the second stirring fan blade (37).

2. The municipal water and wastewater treatment apparatus of claim 1, wherein, The stirring wheel (35) is provided with at least one first mounting plane (351), and the stirring wheel (35) is provided with a first threaded hole (352) penetrating the first mounting plane (351); and one end of the stirring rod (34) close to the driving shaft (311) is threadedly connected in the first threaded hole (352).

3. The municipal water and wastewater treatment apparatus of claim 2, wherein, The heating plate (33) is arranged in a gap with the inner wall of the chute (341); The end of the chute (341) close to the stirring wheel (35) is closed, and the chute (341) penetrates the end face of the stirring rod (34) away from the stirring wheel (35).

4. The municipal water and wastewater treatment apparatus of claim 3, wherein, The chute (341) penetrates the side wall of the stirring rod (34) relative to the first stirring fan blade (32).

5. The municipal water and wastewater treatment apparatus of claim 4, wherein, The first limiting surface (3411) is arranged adjacent to the stirring wheel (35), and the second limiting surface (3412) is arranged adjacent to the first stirring fan blade (32). The end of the stirring rod (34) close to the first stirring fan blade (32) is provided with a notch (342) for facilitating installation of the sliding piece (36), and the notch (342) penetrates the side wall of the stirring rod (34) relative to the first stirring fan blade (32).

6. The municipal water and wastewater treatment apparatus of claim 5, wherein, The first stirring fan blade (32) is provided with at least one first flow-through hole (321), and the second stirring fan blade (37) is provided with at least one second flow-through hole (371).

7. The municipal water and wastewater treatment apparatus of claim 1, wherein, Three water pumping assemblies (40) are installed in the sewage treatment tank (10), and the three water pumping assemblies (40) are arranged in a straight line along the first direction of the sewage treatment tank (10). The first water pumping assembly (40) is used for pumping the pretreated sewage in the pretreatment chamber (11) to the primary treatment chamber (12), the second water pumping assembly (40) is used for pumping the first-stage treated sewage in the primary treatment chamber (12) to the secondary treatment chamber (13), and the third water pumping assembly (40) is used for pumping the second-stage treated sewage in the secondary treatment chamber (13) to the tertiary treatment chamber (14).

8. The municipal water and wastewater treatment apparatus of claim 7, wherein, The sewage treatment box (10) is provided with a water inlet pipe (151) communicated with the pretreatment chamber (11), the pretreatment chamber (11) is provided with a filter frame (16) for filtering sewage flowing out of the water inlet pipe (151), the filter frame (16) is arranged in a gap with the bottom wall of the pretreatment chamber (11), and a plurality of filter holes (161) are formed in the filter frame (16); The sewage treatment box (10) is further provided with at least one water outlet pipe (152) communicated with the three-stage treatment chamber (14), and the water outlet pipe (152) is provided with an outlet valve (153) for controlling the on-off state of the water outlet pipe (152).

9. The municipal water supply and sewerage treatment plant according to claim 1 or 7 or 8, characterized in that, The bottom of the sewage treatment box (10) is provided with a plurality of pulleys (17), and the sewage treatment box (10) has a cuboid structure. The first reinforcing rib (181) and the second reinforcing rib (182) are fixedly installed on at least one outer side wall of the sewage treatment box (10), and the third reinforcing rib (183) is fixedly installed on the outer bottom wall of the sewage treatment box (10), and the first reinforcing rib (181), the second reinforcing rib (182) and the third reinforcing rib (183) are arranged perpendicular to each other.

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