Sewage purifier with internal circulation device

Abstract

The invention provides a sewage purifier with an internal circulation device.The top of a pool body is provided with an internal circulation mechanism used for sewage circulation treatment.The invention relates to the technical field of sewage purification device.Water pumps of a disturbance unit and a water pumping unit in the internal circulation mechanism share the same power source; therefore, the disturbance unit can synchronously stir the bottom of the pool when the water pump works, sludge and impurities which are not completely treated are suspended again, and it is ensured that all the pollutants are sent back to the first-stage treatment area to enter the purification process again. The water pumping unit and the disturbance unit can flexibly move in the water purification area through the arrangement of the moving unit, comprehensive and uniform water pumping and cleaning are achieved, in addition, the buffering structure is the key point and can effectively buffer sewage entering the first-stage treatment area again, and particularly, due to the design of the special shape of a buffering block, the buffering effect is good. The phenomena of short flow and turbulent flow caused by too high flow speed are avoided, and the stability and the treatment effect of the sewage in the circulating treatment process are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of sewage purification equipment, and in particular to a sewage purifier with an internal circulation device. Background Art

[0002] In actual applications, the main problem faced by sewage treatment pools is the constant change of sewage flow, especially when the instantaneous flow is too large. It is difficult for the treatment pool to meet the purification needs under normal treatment procedures, resulting in short-term substandard effects. Sewage flows in from the inlet and out of the outlet. Flow fluctuations lead to insufficient residence time in the treatment pool, reduced pollutant removal efficiency, and inability to fully degrade organic matter and remove suspended solids within the specified time. It is difficult for the effluent water quality to stably meet environmental emission standards, especially during peak hours, when a large amount of sewage flows into the treatment pool, making the originally designed treatment capacity insufficient to cope with it, causing a temporary deterioration in the water quality treatment effect, increasing the risk of overload operation of the treatment system, and possibly causing equipment failure and interruption of the treatment process. Summary of the invention

[0003] The purpose of the present invention is to provide a sewage purifier with an internal circulation device, which can solve the main problem faced by sewage treatment pools in practical applications, that is, the continuous change of sewage flow rate, especially when the instantaneous flow rate is large, the treatment pool is difficult to meet the purification needs under the normal treatment process, resulting in short-term effects not meeting the standards, sewage flows in from the inlet and flows out from the outlet, and the flow fluctuations lead to insufficient residence time in the treatment pool, reduced pollutant removal efficiency, inability to fully degrade organic matter and remove suspended solids within the specified time, and the effluent water quality is difficult to stably meet environmental protection emission standards.

[0004] The present invention provides a sewage purifier with an internal circulation device, wherein the sewage treatment pool comprises a pool body, two guide plates and a water guide pipe, wherein the two guide plates are fixedly arranged in the pool body, each of the guide plates is provided with a water guide pipe, and the two guide plates divide the inner part of the pool body into a primary treatment area, a secondary treatment area and a water purification area, and an internal circulation mechanism for circulating sewage is arranged on the top of the pool body, wherein the internal circulation mechanism comprises a pumping unit for sewage circulation, a buffer unit for stabilizing water flow when the pumping unit discharges water, a disturbance unit for disturbing the pool bottom, and a moving unit for driving the pumping unit and the disturbance unit to move.

[0005] Preferably, the movable unit includes two support seats, a screw, a driving motor, a limit rod and two movable seats. An opening is provided at the top of the pool body, and the opening is used for the movement of the pumping unit. The two support seats are fixedly arranged at the top outside the pool body, and the two support seats are respectively located on the left and right sides of the opening. The two ends of the screw are respectively rotatably connected to the two support seats, and a limit rod is fixedly arranged between the two support seats. The driving motor is fixedly arranged at the top outside the pool body, and the driving end of the driving motor is fixedly connected to one end of the screw. The two movable seats are respectively movably connected to the screw and the limit rod, and a certain distance is left between the two movable seats, and the pumping unit is arranged on the two movable seats.

[0006] Preferably, the pumping unit includes a water pump, a pumping pipe and a drain pipe, the water pump is fixedly arranged on the top of the two movable seats, the pumping pipe is located in the water purification area, and one end of the pumping pipe is fixedly connected to the water inlet of the water pump, one end of the drain pipe is fixedly connected to the water outlet of the water pump, and the other end of the drain pipe is fixedly connected to the top of the pool body, the drain pipe is located in the primary treatment area, a section of the drain pipe close to the water pump is a retractable corrugated hose, and the rest of the drain pipe is a fixed metal pipe, and the other end of the drain pipe is connected to a buffer unit.

[0007] Preferably, the buffer unit includes a diverter box, a plurality of diverter pipes and a buffer block. The other end of the drain pipe is fixedly provided with a diverter box, a plurality of diverter pipes are evenly provided at the bottom of the diverter box, a buffer block is fixedly provided at the bottom of the diverter box, and the buffer block is located directly below the other end of the drain pipe. The bottom of the buffer block is a flat circular base, the upper part is a gradually converging arc surface, and a reverse concave arc fluid guide groove is provided at the top of the arc surface.

[0008] Preferably, the disturbance unit includes a rotating shaft, a circular plate and two groups of cleaning brushes, the top end of the rotating shaft is fixedly connected to the pump shaft of the water pump, and the rotating shaft and the casing of the water pump are connected through a sealed bearing, the rotating shaft is located between the screw and the limiting rod, the circular plate is fixedly arranged at the bottom end of the rotating shaft and fixedly connected, and two groups of cleaning brushes are arranged at the bottom of the circular plate, and a certain distance is left between the two groups of cleaning brushes.

[0009] Preferably, the pumping unit also includes two connecting frames, an annular water pumping cylinder and a plurality of water suction pipes, the tops of the two connecting frames are respectively fixedly arranged on the bottoms of the two movable seats, and the two connecting frames movably pass through the opening at the top of the pool body, the annular water pumping cylinder is fixedly arranged on the bottoms of the two connecting frames, the other end of the water suction pipe is fixedly connected to the top of the annular water pumping cylinder, a plurality of water suction pipes are evenly arranged on the bottom of the annular water pumping cylinder, and the rotating shaft movably passes through the middle part of the annular water pumping cylinder.

[0010] Preferably, two brackets are fixedly provided on the outer side of the annular water pump cylinder, a connecting plate is fixedly provided between the two brackets, the connecting plate is located between the two groups of cleaning brushes, and a scraper is fixedly provided on the top of the connecting plate.

[0011] Preferably, a plurality of fixing seats are fixedly provided on the top of the outer side of the pool body, and the drainage pipe of the fixed structure is fixedly connected to the plurality of fixing seats.

[0012] Preferably, the diameter of the guide groove is larger than the diameter of the drain pipe.

[0013] Preferably, the sewage treatment pool further comprises an inlet pipe and an outlet pipe, and the inlet pipe and the outlet pipe are respectively installed on the left and right sides of the pool body.

[0014] The present invention provides a sewage purifier with an internal circulation device through improvements. Compared with the prior art, the present invention has the following improvements and advantages: the present invention realizes the reprocessing of sewage through the internal circulation mechanism arranged in the sewage treatment pool, and effectively improves the overall purification efficiency. The disturbance unit in the internal circulation mechanism shares the same power source with the water pump of the pumping unit, so that the disturbance unit can synchronously stir the pool bottom when the water pump is working, and re-suspend the untreated sludge and impurities, ensuring that all these pollutants are sent back to the primary treatment area to re-enter the purification process. The setting of the mobile unit enables the pumping unit and the disturbance unit to move flexibly in the clean water area, realizing comprehensive and uniform pumping and cleaning, ensuring that the sewage in each area of ​​the pool can be effectively treated. The design of the upper and lower positions of the annular pumping cylinder inside the pumping unit and the cleaning brush of the disturbance unit enables the stirring and extraction of sludge and impurities to be carried out synchronously during the pumping process, thereby improving the cleaning efficiency. In addition, the buffer structure is the focus, which can effectively buffer the sewage re-entering the primary treatment area, especially the special shape design of the buffer block, which avoids short-flow and turbulence caused by excessive flow rate, and ensures the stability and treatment effect of sewage in the circulation treatment process, thereby improving the overall performance and reliability of the sewage purification system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is an axonometric structural schematic diagram of a sewage purifier with an internal circulation device;

[0017] Figure 2It is a schematic diagram of an axonometric cross-sectional structure of a sewage purifier with an internal circulation device;

[0018] Figure 3 It is an axonometric structural diagram of an internal circulation mechanism of a sewage purifier with an internal circulation device;

[0019] Figure 4 It is a schematic diagram of the main structure of a buffer component of a sewage purifier with an internal circulation device;

[0020] Figure 5 It is a schematic diagram of the structure of a diversion box and a diversion pipe of a sewage purifier with an internal circulation device, viewed from above;

[0021] Figure 6 It is a schematic diagram of the top view structure of a buffer block of a sewage purifier with an internal circulation device;

[0022] Figure 7 It is a schematic diagram of the structure of an annular water pump and a water suction pipe of a sewage purifier with an internal circulation device, viewed from above;

[0023] Figure 8 It is a side view structural schematic diagram of a circular plate, a cleaning brush and a scraper of a sewage purifier with an internal circulation device;

[0024] Fig. 9 It is a schematic diagram of the axonometric structure of a support, a connecting plate and a scraper of a sewage purifier with an internal circulation device;

[0025] Description of reference numerals:

[0026] 1. Sewage treatment tank; 11. Tank body; 12. Guide plate; 13. Water guide pipe; 14. Water inlet pipe; 15. Water outlet pipe; 2. Mobile unit; 21. Support seat; 22. Screw; 23. Drive motor; 24. Limit rod; 25. Mobile seat; 3. Pumping unit; 31. Water pump; 32. Pumping pipe; 33. Drain pipe; 34. Connecting frame; 35. Annular pumping cylinder; 36. Suction pipe; 4. Buffer unit; 41. Diverter box; 42. Diverter pipe; 43. Buffer block; 5. Disturbance unit; 51. Rotating shaft; 52. Circular plate; 53. Cleaning brush; 6. Bracket; 7. Connecting plate; 8. Scraper; 9. Fixed seat. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0029] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] See also Figure 1-3The present invention provides a technical solution: a sewage purifier with an internal circulation device, the sewage treatment tank 1 includes a tank body 11, two guide plates 12 and a water pipe 13, the two guide plates 12 are fixedly arranged in the tank body 11, each guide plate 12 is provided with a water pipe 13, the two guide plates 12 divide the inside of the tank body 11 into a primary treatment area, a secondary treatment area and a clean water area, the tank body 11, the two guide plates 12 and the water pipe 13 are all components of the sewage treatment tank 1, the primary treatment area is the preliminary treatment stage of sewage, the secondary treatment area is the in-depth treatment stage of sewage, and the clean water area is the discharge stage after the sewage is completely treated, the above components and working principles are all existing equipment and prior arts in this field, so no unnecessary introduction is made here, an internal circulation mechanism for sewage circulation treatment is arranged on the top of the tank body 11, the internal circulation mechanism includes a pumping unit 3 for sewage circulation, the pumping unit 3 can re-discharge the treated sewage in the clean water area The sewage is introduced into the primary treatment area for circulation treatment, ensuring that the sewage flows repeatedly in the tank body 11, and the water quality is improved through multiple purification processes. The buffer unit 4 is used to stabilize the water flow when the pumping unit 3 discharges water. The buffer unit 4 can smooth the water flow when the sewage is discharged by the pumping unit 3 to prevent the impact and turbulence caused by the excessive water flow speed, thereby maintaining the stable flow state in the treatment tank. The disturbance unit 5 is used for disturbance. The disturbance unit 5 can stir the residual sludge and impurities deposited at the bottom of the clean water area to ensure that these incompletely treated substances can be re-processed, so that the pumping unit 3 can fully pump these substances back to the primary treatment area for circulation treatment. The mobile unit 2 is used to drive the pumping unit 3 and the disturbance unit 5 to move. The mobile unit 2 allows the pumping unit 3 and the disturbance unit 5 to move horizontally on the top of the tank body 11, realizing comprehensive and uniform pumping and pool bottom disturbance operations, ensuring that all areas in the pool can be effectively purified.

[0031] See also Figure 1-3Specifically, the mobile unit 2 allows the pumping unit 3 and the disturbance unit 5 to move back and forth laterally on the top of the sewage treatment tank 1, thereby realizing pumping and disturbance of different areas in the tank, avoiding the pumping and disturbance being always in a fixed position, ensuring that the sewage and sludge in different areas of the tank are evenly sucked and stirred, and avoiding dead corners and sedimentation problems during the treatment process. By performing the pumping and disturbance operations simultaneously, not only the pumping efficiency is improved, but also the uniformity of the water quality in the pool is ensured. The moving unit 2 includes two support seats 21, a screw rod 22, a driving motor 23, a limit rod 24 and two moving seats 25. An opening is provided at the top of the pool body 11, and the opening is used for the movement of the pumping unit 3. The pumping unit 3 and the disturbance unit 5 can both move laterally in the opening. The two support seats 21 are fixedly arranged at the top outside the pool body 11, and the two support seats 21 are respectively located on the left and right sides of the opening. The two support seats 21 are used to support the screw rod 22. The two ends of the screw rod 22 are rotatably connected to the two support seats 21 respectively. The screw rod 22 can rotate on the two support seats 21. A fixed arrangement is provided between the two support seats 21. There is a limit rod 24, which is located at the rear side of the screw 22, with a certain distance between the limit rod 24 and the screw 22, and a driving motor 23 is fixedly arranged on the top outside the pool body 11, and the driving end of the driving motor 23 is fixedly connected to one end of the screw 22, and the driving motor 23 is used to drive the screw 22. The two moving seats 25 are movably connected to the screw 22 and the limit rod 24 respectively, and a certain distance is left between the two moving seats 25. The two moving seats 25 are arranged one on the left and one on the right, and the two moving seats 25 move synchronously. When moving, a constant distance is always maintained between the two moving seats 25, the moving seat 25 is threadedly connected to the screw 22, and the moving seat 25 is slidably connected to the limit rod 24, and the pumping unit 3 is arranged on the two moving seats 25.

[0032] The working principle of the mobile unit 2 is to drive the screw 22 to rotate by the rotation of the driving motor 23, thereby causing the two mobile seats 25 to move synchronously along the screw 22 in a horizontal and linear manner. During the movement, the limit rod 24 plays a guiding role to ensure that the mobile seat 25 can only move on a predetermined track without deviation or rotation. As the mobile seat 25 moves horizontally, the pumping unit 3 fixed on the mobile seat 25 also moves horizontally and linearly at the opening at the top of the pool body 11, thereby achieving uniform suction of sewage from different areas in the pool.

[0033] See also Figure 2-3Specifically, the pumping unit 3 can realize the effective circulation of sewage in the treatment pool and improve the treatment efficiency. The pumping unit 3 includes a water pump 31, a pumping pipe 32 and a drain pipe 33. The water pump 31 is fixedly arranged on the top of the two movable seats 25 to ensure that the water pump 31 can move stably laterally with the movable seats 25. The pumping pipe 32 is located in the clean water area, and one end of the pumping pipe 32 is fixedly connected to the water inlet of the water pump 31 to ensure that the water pump 31 can extract the treated sewage from the clean water area. One end of the drain pipe 33 is fixedly connected to the water outlet of the water pump 31, and the other end of the drain pipe 33 is fixedly passed through the top of the pool body 11. The drain pipe 33 is located in the primary treatment area. The sewage sucked in by the water pump 31 in the water purification area can re-enter the primary treatment area for circulation treatment. A section of the drain pipe 33 close to the water pump 31 is a retractable corrugated hose, and the rest of the drain pipe 33 is a fixed metal pipe. The retractable corrugated hose allows the drain pipe 33 to flexibly expand and contract during movement to avoid pipe distortion or damage caused by movement, while the rest of the drain pipe 33 is a fixed metal pipe, providing a stable fluid transmission path. The design of the retractable corrugated hose ensures that the water pump 31 can move normally with the mobile unit 2. The other end of the drain pipe 33 is connected to the buffer unit 4, which can buffer the water flow discharged from the drain pipe 33.

[0034] See also Figure 4-6Specifically, the buffer unit 4 includes a diversion box 41, a plurality of diversion pipes 42 and a buffer block 43. The other end of the drain pipe 33 is fixedly provided with the diversion box 41, and the bottom of the diversion box 41 is evenly provided with a plurality of diversion pipes 42. The diversion box 41 can evenly distribute the sewage from the water pump 31 to the plurality of diversion pipes 42, thereby reducing the water flow speed and impact force of a single diversion pipe 42. The bottom of the diversion box 41 is fixedly provided with a buffer block 43, and the buffer block 43 is located directly below the other end of the drain pipe 33. The bottom of the buffer block 43 is a flat circular base. The bottom is a gradually converging arc surface, and the top of the arc surface is provided with a reverse concave arc fluid guide groove. The water discharged from the drain pipe 33 can directly impact the guide groove of the buffer block 43. Due to the reverse concave arc setting of the guide groove, the impact of the water flow can be effectively reduced. Then the water flow will continue to flow downward along the outer wall of the buffer block 43, making the water flow entering each diversion pipe 42 more stable, ensuring that each diversion pipe 42 can obtain a uniform flow rate, avoiding turbulence and short flow caused by excessive discharge of water velocity and excessive impact force. Turbulence will cause the water flow to form irregular eddies and vortices in the tank body 11. These eddies will stir the impurities and sludge that have been deposited, causing them to re-suspend in the water, affecting the sedimentation effect and reducing the efficiency of solid-liquid separation. The short-flow phenomenon will cause the water flow to bypass certain areas in the tank body 11, reducing the residence time of sewage in the tank body 11, affecting the progress of biochemical reactions, reducing the degradation efficiency of pollutants, and may cause some sewage to be discharged without sufficient treatment, thereby seriously affecting the overall treatment effect. The setting of the buffer unit 4 can effectively solve the above problems. It not only ensures that the recycled sewage is evenly distributed in the tank body 11 and fully contacts the treatment area to ensure that the pollutants are effectively degraded, but also prevents the disturbance of the sludge and impurities that have been deposited, and avoids the re-suspension of these solid substances. Such a design prolongs the residence time of sewage in the tank body 11, provides more sufficient conditions for biochemical reactions, maintains the stability of the flow state in the tank, promotes the complete progress of biochemical reactions, thereby significantly improving the overall sewage treatment effect and efficiency, and also ensures the stability of the effluent quality.

[0035] See also Figure 2-3Specifically, the disturbance unit 5 can effectively stir up the residual sludge and impurities deposited at the bottom of the water purification area, so that these substances that have not been thoroughly treated can be resuspended and mixed into the water body, thereby ensuring that they are further degraded and removed in the subsequent treatment process. The disturbance unit 5 includes a rotating shaft 51, a circular plate 52 and two sets of cleaning brushes 53. The top of the rotating shaft 51 is fixedly connected to the pump shaft of the water pump 31. This connection method enables the disturbance unit 5 to share the same power source with the water pump 31, thereby achieving disturbance of the pool bottom while pumping water. The rotating shaft 51 is connected to the housing of the water pump 31 through a sealed bearing, and the connection of the sealed bearing ensures the smooth rotation of the rotating shaft 51 and does not affect the normal operation of the water pump 31. The rotating shaft 51 is located between the screw rod 22 and the limit rod 24. The circular plate 52 is fixedly arranged at the bottom end of the rotating shaft 51 and is fixedly connected. Two groups of cleaning brushes 53 are arranged at the bottom of the circular plate 52. A certain distance is left between the two groups of cleaning brushes 53. The cleaning brushes 53 at the bottom of the circular plate can stably stir the pool bottom when the rotating shaft 51 rotates. The function of these cleaning brushes 53 is to further stir the pool bottom so that the impurities that have not been completely treated can be re-suspended.

[0036] See also Figure 2-3 Specifically, the pumping unit 3 also includes two connecting frames 34, an annular pumping cylinder 35 and a plurality of water suction pipes 36. The tops of the two connecting frames 34 are fixedly arranged at the bottoms of the two movable seats 25, and the two connecting frames 34 are movable through the opening at the top of the pool body 11. The annular pumping cylinder 35 is fixedly arranged at the bottoms of the two connecting frames 34. The connecting frames 34 are used to fix the annular pumping cylinder 35 on the movable seat 25. The other end of the pumping pipe 32 is fixedly connected to the top of the annular pumping cylinder 35. A plurality of water suction pipes 36 are evenly arranged at the bottom of the annular pumping cylinder 35. Due to its annular design, the annular pumping cylinder 35 corresponds to the cleaning brush 53 at the bottom. When the cleaning brush 53 disturbs the sludge at the bottom of the pool, the sludge can be directly pumped away by the annular pumping cylinder 35. This layout ensures that the disturbed sludge quickly enters the treatment process, thereby improving the treatment efficiency. The rotating shaft 51 moves through the middle part of the annular pumping cylinder 35. The annular pumping cylinder 35 is connected to the movable seat 25 through the connecting frame 34. After being sucked into the suction pipe 36, the sewage can directly flow to the water pump 31 through the annular pumping cylinder 35 and the suction pipe 32 for further circulation treatment. The multiple suction pipes 36 evenly distributed at the bottom of the annular pumping cylinder 35 can simultaneously absorb sewage from different points on the bottom of the pool. When used in conjunction with the mobile unit 2, the uniformity of pumping is greatly improved, avoiding the problem of uneven sludge deposition on the bottom of the pool caused by single-point pumping, and ensuring that the sludge on the entire bottom of the pool can be effectively extracted, thereby improving the comprehensiveness and efficiency of sewage treatment. At the same time, the rotating shaft 51 moves through the middle part of the annular pumping cylinder 35. This design allows the rotating shaft 51 to stir the bottom of the pool without interfering with the annular pumping cylinder 35.

[0037] See also Figure 3 as well as Figure 8-9 Specifically, two brackets 6 are fixedly provided on the outer side of the annular water pump 35, and the two brackets 6 do not contact the circular plate 52. A connecting plate 7 is fixedly provided between the two brackets 6, and the connecting plate 7 is located between the two groups of cleaning brushes 53, and the connecting plate 7 is located below the circular plate 52. A scraper 8 is fixedly provided on the top of the connecting plate 7, and the distance between the scraper 8 and the bottom of the circular plate 52 is greater than the maximum length of the cleaning brush 53 when it can bend. When the cleaning brush 53 is rotating, even if a certain degree of bending occurs, it can pass through the scraper 8 smoothly without being hindered by the scraper 8, ensuring that the bristles of the cleaning brush 53 can touch the scraper 8 when the cleaning brush 53 is squeezed during rotation, and the impurities on the cleaning brush 53 can be automatically scraped off by the scraper 8, thereby keeping the cleaning brush 53 clean and working efficiently.

[0038] See also Figure 1-2 Specifically, a plurality of fixing seats 9 are fixedly arranged on the top of the pool body 11 , and the drainage pipe 33 of the fixed structure is fixedly connected to the plurality of fixing seats 9 . The arrangement of the fixing seats 9 further improves the stability of the drainage pipe 33 .

[0039] See also Figure 4 as well as Figure 6 Specifically, the diameter of the guide groove is larger than the diameter of the drain pipe 33. When the water flows into the guide groove, the contact area increases, so that the water flow can be more evenly distributed on the surface of the guide groove, thereby further reducing the impact force of the water flow, ensuring that the water flow can slowly flow through the diversion pipe 42 into the primary treatment area, and further reducing short-circuit and turbulence.

[0040] See also Figure 1-2 Specifically, the sewage treatment pool 1 also includes an inlet pipe 14 and an outlet pipe 15, which are respectively installed on the left and right sides of the pool body 11. The inlet pipe 14 and the outlet pipe 15 are respectively used for the entry of sewage before treatment and the discharge of sewage after treatment.

[0041] Working principle: The present invention uses an internal circulation mechanism to achieve multiple purification of sewage in the treatment tank until it reaches the water purification standard. First, the sewage enters the tank body 11 through the water inlet pipe 14. In the primary treatment area, the suspended matter and impurities in the sewage begin to precipitate. Then the sewage flows into the secondary treatment area, where biochemical reactions are carried out to decompose organic pollutants. The sewage after primary and secondary treatment flows into the purified water purification area. The water in the water purification area is the treated water, ensuring that the water quality meets the purification requirements.

[0042] While the sewage is being treated, the pumping unit 3 and the disturbance unit 5 work simultaneously. The pumping unit 3 will pump the water in the clean water area back to the primary treatment area to achieve internal circulation treatment, ensuring that the sewage flows repeatedly in the pool body 11, and improving the water quality through multiple purification processes. The rotating shaft 51 of the disturbance unit 5 is linked with the pump shaft of the water pump 31. When the pumping unit 3 is working, the cleaning brush 53 can rotate, thereby disturbing the substances that have not been completely treated and deposited at the bottom of the clean water area, ensuring that these substances can be completely pumped into the primary treatment area by the pumping unit 3 for re-treatment.

[0043] During the pumping process, after the water in the clean water area enters the diversion box 41 through the drain pipe 33, the buffer block 43 will buffer the water flow and slow down the flow rate of the water flow. Then, the water flows out through multiple evenly distributed diversion pipes 42, reducing the impact on the primary treatment area, ensuring that the water flow smoothly transitions to the next treatment stage, and avoiding short-flow and turbulence.

[0044] The moving unit 2 can make the pumping unit 3 and the disturbance unit 5 move laterally on the top of the pool body 11, so as to realize comprehensive and uniform pumping and pool bottom disturbance, and avoid processing dead corners and sedimentation problems.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sewage purifier with an internal circulation device, the sewage treatment tank (1) comprising a tank body (11), two guide plates (12) and a water guide pipe (13), the two guide plates (12) being fixedly arranged in the tank body (11), each of the guide plates (12) being provided with a water guide pipe (13), the two guide plates (12) dividing the interior of the tank body (11) into a primary treatment area, a secondary treatment area and a water purification area, characterized in that: An internal circulation mechanism for circulating sewage is arranged on the top of the pool body (11), and the internal circulation mechanism comprises a pumping unit (3) for circulating sewage, a buffer unit (4) for stabilizing the water flow when the pumping unit (3) discharges water, a disturbance unit (5) for disturbing the pool bottom, and a moving unit (2) for driving the pumping unit (3) and the disturbance unit (5) to move.

2. A sewage purifier with an internal circulation device according to claim 1, characterized in that: The moving unit (2) comprises two supporting seats (21), a screw rod (22), a driving motor (23), a limiting rod (24) and two moving seats (25); an opening is provided at the top of the pool body (11), and the opening is used for the movement of the pumping unit (3); the two supporting seats (21) are fixedly arranged at the top of the pool body (11), and the two supporting seats (21) are respectively located on the left and right sides of the opening; the two ends of the screw rod (22) are respectively connected to the two supporting seats (2 1) a rotational connection, a limit rod (24) is fixedly arranged between the two support seats (21), the drive motor (23) is fixedly arranged on the top of the pool body (11), and the drive end of the drive motor (23) is fixedly connected to one end of the screw rod (22), the two movable seats (25) are movably connected to the screw rod (22) and the limit rod (24), and a certain distance is left between the two movable seats (25), and the pumping unit (3) is arranged on the two movable seats (25).

3. A sewage purifier with an internal circulation device according to claim 2, characterized in that: The pumping unit (3) comprises a water pump (31), a water pumping pipe (32) and a drainage pipe (33); the water pump (31) is fixedly arranged on the top of the two movable seats (25); the water pumping pipe (32) is located in the water purification area, and one end of the water pumping pipe (32) is fixedly connected to the water inlet of the water pump (31); one end of the drainage pipe (33) is fixedly connected to the water outlet of the water pump (31), and the other end of the drainage pipe (33) is fixedly passed through the top of the pool body (11); the drainage pipe (33) is located in the primary treatment area; a section of the drainage pipe (33) close to the water pump (31) is a retractable corrugated hose, and the rest of the drainage pipe (33) is a fixed metal pipe; the other end of the drainage pipe (33) is connected to a buffer unit (4).

4. A sewage purifier with an internal circulation device according to claim 3, characterized in that: The buffer unit (4) comprises a diverter box (41), a plurality of diverter pipes (42) and a buffer block (43); the other end of the drain pipe (33) is fixedly provided with the diverter box (41); the bottom of the diverter box (41) is evenly provided with a plurality of diverter pipes (42); the bottom of the diverter box (41) is fixedly provided with a buffer block (43); and the buffer block (43) is located directly below the other end of the drain pipe (33); the bottom of the buffer block (43) is a flat circular base, the upper part is a gradually converging arc surface, and the top of the arc surface is provided with a reverse concave arc fluid guide groove.

5. A sewage purifier with an internal circulation device according to claim 4, characterized in that: The disturbance unit (5) comprises a rotating shaft (51), a circular plate (52) and two groups of cleaning brushes (53); the top end of the rotating shaft (51) is fixedly connected to the pump shaft of the water pump (31), and the rotating shaft (51) and the housing of the water pump (31) are connected via a sealed bearing; the rotating shaft (51) is located between the screw rod (22) and the limiting rod (24); the circular plate (52) is fixedly arranged at the bottom end of the rotating shaft (51) and fixedly connected; two groups of cleaning brushes (53) are arranged at the bottom of the circular plate (52), and a certain distance is left between the two groups of cleaning brushes (53).

6. A sewage purifier with an internal circulation device according to claim 5, characterized in that: The pumping unit (3) further comprises two connecting frames (34), an annular pumping cylinder (35) and a plurality of water suction pipes (36); the tops of the two connecting frames (34) are respectively fixedly arranged at the bottoms of the two movable seats (25), and the two connecting frames (34) are movably penetrated through the opening at the top of the pool body (11); the annular pumping cylinder (35) is fixedly arranged at the bottoms of the two connecting frames (34); the other end of the pumping pipe (32) is fixedly connected to the tops of the annular pumping cylinder (35); a plurality of water suction pipes (36) are evenly arranged at the bottom of the annular pumping cylinder (35); and the rotating shaft (51) is movably penetrated through the middle part of the annular pumping cylinder (35).

7. A sewage purifier with an internal circulation device according to claim 6, characterized in that: Two brackets (6) are fixedly arranged on the outer side of the annular water pump (35), a connecting plate (7) is fixedly arranged between the two brackets (6), the connecting plate (7) is located between the two groups of cleaning brushes (53), and a scraper (8) is fixedly arranged on the top of the connecting plate (7).

8. The sewage purifier with an internal circulation device according to claim 7, characterized in that: A plurality of fixing seats (9) are fixedly arranged on the top of the pool body (11), and the drainage pipe (33) of the fixed structure is fixedly connected to the plurality of fixing seats (9).

9. The sewage purifier with an internal circulation device according to claim 4, characterized in that: The diameter of the guide groove is greater than the diameter of the drainage pipe (33).

10. The sewage purifier with an internal circulation device according to claim 1, characterized in that: The sewage treatment pool (1) further comprises an inlet pipe (14) and an outlet pipe (15), wherein the inlet pipe (14) and the outlet pipe (15) are respectively installed on the left and right sides of the pool body (11).

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