A small sewage treatment tank
By introducing structures such as a water collection hood, a settling pipe, and a spiral conveyor shaft into a small sewage treatment tank, the problems of insufficient contact between flocculant and sewage and poor discharge of impurities are solved, achieving rapid sedimentation and efficient sewage discharge, thus improving the equipment's performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG FENGHE ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-07-16
- Publication Date
- 2026-07-03
AI Technical Summary
In existing small-scale wastewater treatment tanks, the flocculant does not come into sufficient contact with the wastewater, resulting in slow sedimentation and easy clogging of pipes when impurities are discharged, thus affecting the effectiveness of the treatment.
A small wastewater treatment tank was designed, which adopts a structure including a water collection hood, a settling pipe, a spiral conveyor shaft, and a spray head to ensure that the flocculant is in full contact with the wastewater, and to achieve efficient discharge of impurities through the spiral conveyor shaft and the sewage pipe system.
It accelerates the sedimentation speed of sewage, improves the sedimentation effect, avoids blockage of sewage pipes, and enhances the overall usage effect.
Smart Images
Figure CN224450404U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sewage treatment tank technology, and in particular to a small sewage treatment tank. Background Technology
[0002] Small wastewater treatment tanks are compact wastewater treatment devices that integrate pretreatment, sedimentation, and disinfection functions. They mainly serve decentralized scenarios and achieve wastewater purification through the synergistic effects of physical, biological, and chemical processes.
[0003] Existing small-scale wastewater treatment tanks typically involve feeding wastewater into the tank and then adding flocculants to induce sedimentation. However, because the flocculants are added directly into the tank, they cannot fully contact the wastewater, thus affecting the sedimentation rate and resulting in poor performance. Furthermore, the removal of impurities from the tank is usually done through direct pipe discharge, which easily clogs the pipes, hindering the removal process and further compromising efficiency. Therefore, we propose a new type of small-scale wastewater treatment tank. Summary of the Invention
[0004] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a small-scale sewage treatment tank.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a small sewage treatment tank is designed, including a tank body, a water collection hood is coaxially provided inside the tank body, a settling pipe is coaxially connected to the bottom of the water collection hood, the bottom of the settling pipe extends to the bottom end of the tank body, and several opening slots are provided on the bottom side of the settling pipe.
[0006] The tank is equipped with a top cover, a sewage pipe is installed on the top of the top cover, and a coil is installed at the bottom of the top cover. One end of the coil is connected to the sewage pipe, and the other end of the coil extends into the inside of the water collection hood. The drainage direction of the coil is tangent to the inner wall of the water collection hood.
[0007] A mounting plate is installed on the side of the tank, and a delivery pump is installed on the top of the mounting plate. The inlet end of the delivery pump is connected to the medicine tank through a pipe, and a delivery pipe is fixedly installed on the outlet end of the delivery pump. A ring pipe is coaxially installed at the bottom of the top cover. The other end of the delivery pipe passes through the top cover and is connected to the ring pipe. Several spray nozzles are installed on the bottom side of the ring pipe, and the spray nozzles face the inside of the water collection hood.
[0008] A second drain pipe is coaxially installed at the bottom of the tank. A screw conveyor shaft is coaxially rotatably connected inside the second drain pipe. The top of the screw conveyor shaft extends into the tank and is rotatably connected to the bottom of the settling pipe. A drive motor is connected to the bottom of the screw conveyor shaft. The drive motor is fixed to the bottom of the second drain pipe. A first drain pipe is installed on one side of the bottom of the second drain pipe.
[0009] Preferably, both the settling pipe and the water collection hood are fixed to the inner wall of the tank by support rods.
[0010] Preferably, both the bottom edge of the top cover and the top edge of the tank are provided with rims. When the top cover is placed on top of the tank, the two rims overlap and are fastened together by bolts.
[0011] Preferably, several scrapers are installed on the top side of the screw conveyor shaft, and the edges of the scrapers are fitted with the bottom of the tank with a clearance fit.
[0012] Preferably, a valve is installed on the side of the first sewage pipe.
[0013] Preferably, a protective cover is installed at the bottom of the second drain pipe, and the drive motor is located inside the protective cover.
[0014] Preferably, a drain pipe is installed on one side of the top of the tank, with the inlet end of the drain pipe lower than the top of the water collection hood.
[0015] Preferably, an annular filter screen is coaxially installed at the top of the tank, a water collection hood passes through the annular filter screen, and the annular filter screen is located below the drain pipe.
[0016] Preferably, the bottom edge of the tank is equipped with several support legs, one of which has a control cabinet mounted on its side. The controller inside the control cabinet is connected to the delivery pump, drive motor and valves via wires.
[0017] The design scheme proposed in this utility model has the following beneficial effects in application:
[0018] 1. Wastewater can be transported to the coil through the sewage pipe, and when the wastewater is transported to the water collection hood through the coil, it can flow spirally along the inside of the water collection hood. At the same time, the flocculant solution can be sprayed into the water collection hood through the spray head by the delivery pump, so that it can fully contact the wastewater, accelerate the sedimentation of wastewater, and improve the use effect.
[0019] 2. The drive motor can drive the screw conveyor shaft to rotate, thereby transporting the impurities settled at the bottom of the tank to the first drain pipe and discharging them along the first drain pipe, avoiding blockage during slag discharge and improving the usage effect. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of this utility model;
[0021] Figure 2 This is a side sectional view of the structure of this utility model;
[0022] Figure 3 This is a schematic diagram of the delivery pump and coil structure of this utility model;
[0023] Figure 4 This is a schematic diagram of the sedimentation pipe and spiral conveyor shaft structure of this utility model.
[0024] In the diagram: 1. Tank; 2. Mounting plate; 3. Transfer pump; 4. Infusion pipe; 5. Surrounding edge; 6. Sewage pipe; 7. Top cover; 8. Annular filter screen; 9. Drain pipe; 10. Water collection cover; 11. Support leg; 12. Valve; 13. First sewage pipe; 14. Second sewage pipe; 15. Scraper; 16. Settling pipe; 17. Spray head; 18. Annular pipe; 19. Support rod; 20. Protective cover; 21. Drive motor; 22. Screw conveyor shaft; 23. Opening groove; 24. Coil; 25. Control cabinet. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0026] Reference Figures 1-4 A small sewage treatment tank includes a tank body 1, with several support legs 11 installed on the bottom edge of the tank body 1. A control cabinet 25 is installed on the side of one of the support legs 11. The control cabinet 25 contains a controller, which is either a control motherboard or a PLC logic controller.
[0027] like Figure 2 and Figure 4 As shown, a water collection hood 10 is coaxially installed inside the tank body 1. A settling pipe 16 is coaxially connected to the bottom of the water collection hood 10. The bottom of the settling pipe 16 extends to the bottom of the tank body 1, and several opening slots 23 are opened on the bottom side of the settling pipe 16. A top cover 7 is provided on the top of the tank body 1. A sewage pipe 6 is installed on the top of the top cover 7, and a coil 24 is installed at the bottom of the top cover 7. One end of the coil 24 is connected to the sewage pipe 6, and the other end of the coil 24 extends into the water collection hood 10. In actual use, sewage is discharged into the coil 24 through the sewage pipe 6, and then transported into the settling pipe 16 through the coil 24. The sewage is transported to the bottom of the tank body 1 through the settling pipe 16 and the opening slots 23. When the sewage flows along the settling pipe 16, the impurities in the sewage will settle at the bottom of the tank body 1, and the clean water will rise to the top of the tank body 1 as the liquid level in the tank body 1 rises.
[0028] like Figure 1 and Figure 2 As shown, a drain pipe 9 is installed on one side of the top of the tank 1. The inlet end of the drain pipe 9 is lower than the top of the water collection hood 10. The clean water that rises to the top of the tank 1 can be discharged through the drain pipe 9, so that the clean water will not overflow the water collection hood 10 and will not hinder the treatment of sewage.
[0029] like Figure 2As shown, an annular filter screen 8 is coaxially installed at the top of the tank 1. The water collection hood 10 passes through the annular filter screen 8, and the annular filter screen 8 is located below the drain pipe 9. The annular filter screen 8 can block the sediment in the sewage, preventing some of the impurities that flow to the top of the tank 1 with the water flow from being discharged along the drain pipe 9, so as not to hinder the treatment of sewage.
[0030] like Figure 2 and Figure 3 As shown, a mounting plate 2 is installed on the side of the tank 1, and a delivery pump 3 is installed on the top of the mounting plate 2. The inlet end of the delivery pump 3 is connected to the medicine tank through a pipe, and a delivery pipe 4 is fixedly installed on the outlet end of the delivery pump 3. An annular pipe 18 is coaxially installed on the bottom of the top cover 7. The other end of the delivery pipe 4 passes through the top cover 7 and is connected to the annular pipe 18. Several spray nozzles 17 are installed on the bottom side of the annular pipe 18, and the spray nozzles 17 face the inside of the water collection hood 10. The delivery pump 3 is connected to the control via a wire. The device is connected, and the delivery pump 3 is a diaphragm pump. In actual use, the delivery pump 3 can deliver the flocculant solution in the agent tank to the annular pipe 18 through the delivery pipe 4, and then spray it into the water collection hood 10 through the spray head 17. In addition, the drainage direction of the coil 24 is tangent to the inner wall of the water collection hood 10. In this way, when the sewage is delivered to the water collection hood 10 through the coil 24, the sewage will flow spirally along the side wall of the water collection hood 10. In this way, the flocculant solution will come into full contact with the sewage, which will accelerate the sedimentation speed of the sewage.
[0031] like Figure 2 and Figure 4 As shown, a second drain pipe 14 is coaxially installed at the bottom of the tank 1. A screw conveyor shaft 22 is coaxially rotatably connected inside the second drain pipe 14. The top of the screw conveyor shaft 22 extends into the tank 1 and is rotatably connected to the bottom of the settling pipe 16. A drive motor 21 is connected to the bottom of the screw conveyor shaft 22. The drive motor 21 is fixed to the bottom of the second drain pipe 14 and is connected to the controller via a wire. A first drain pipe 13 is installed on one side of the bottom of the second drain pipe 14. In actual use, when the impurities inside the tank 1 settle to a preset amount, the controller controls the drive motor 21 to work. The drive motor 21 drives the screw conveyor shaft 22 to rotate. The screw conveyor shaft 22 transports the impurities at the bottom of the tank 1 to the first drain pipe 13 and discharges them. When discharging impurities, the first drain pipe 13 and the second drain pipe 14 will not be blocked.
[0032] A valve 12 is installed on the side of the first sewage pipe 13. The valve 12 is connected to the controller via a wire. In actual use, the valve 12 can control the opening and closing of the first sewage pipe 13. When the sewage is settling, the valve 12 can be closed. When the sewage is being discharged, the valve 12 can be opened to discharge the impurities conveyed by the screw conveyor shaft 22 from the first sewage pipe 13.
[0033] It should be noted that, as Figure 2 and Figure 4 As shown, several scrapers 15 are installed on the top side of the screw conveyor shaft 22. The edge of the scraper 15 is fitted with the bottom of the tank 1 with a gap. The scraper 15 can scrape off the dirt adhering to the inner wall of the tank 1 during sewage discharge and discharge it along the screw conveyor shaft 22, avoiding impurity residue and improving the use effect.
[0034] Specifically, in use, the worker transports wastewater into the tank 1 through the wastewater pipe 6. The wastewater then flows along the wastewater pipe 6 into the coil 24, and then along the coil 24 into the collection hood 10. Simultaneously, the controller controls the delivery pump 3 to operate. The delivery pump 3 transports the flocculant solution from the external reagent tank through a pipeline to the infusion pipe 4, and then along the infusion pipe 4 into the annular pipe 18. Finally, it is sprayed through the spray head 17 into the wastewater in the collection hood 10, where it mixes thoroughly with the wastewater, accelerating sedimentation. Under the influence of gravity, the wastewater mixed with the flocculant solution flows along the settling pipe 16 towards the bottom of the tank 1. The wastewater then passes through the opening... The wastewater is transported from tank 23 to the bottom of tank 1. Impurities settle at the bottom of tank 1. As the liquid level rises, clean water passes through the annular filter 8 and overflows the inlet of drain pipe 9. The clean water is discharged through drain pipe 9, completing the wastewater treatment. When the amount of impurities settled inside tank 1 reaches the preset amount, the operator stops transporting wastewater into tank 1. At the same time, the controller controls the drive motor 21 and valve 12 to work. Valve 12 opens, and drive motor 21 controls the spiral conveyor shaft 22 to rotate. The spiral conveyor shaft 22 transports the wastewater from the impurity connection point in tank 1 to the first drain pipe 13 and discharges it from the first drain pipe 13, avoiding blockage by impurities and improving the usage effect.
[0035] Furthermore, such as Figure 2 As shown, the sides of the settling pipe 16 and the water collection hood 10 are both fixed to the inner wall of the tank 1 by the support rod 19. The support rod 19 can fix the water collection hood 10 and the settling pipe 16 in place, making them secure.
[0036] Furthermore, such as Figure 1 As shown, the bottom edge of the top cover 7 and the top edge of the tank body 1 are both provided with a surrounding edge 5. When the top cover 7 is placed on the top of the tank body 1, the two surrounding edges 5 are stacked together and fastened together by bolts. By fixing the two surrounding edges 5 together with bolts, the top cover 7 and the tank body 1 can be fixed together and securely fixed.
[0037] Furthermore, such as Figure 2 As shown, a protective cover 20 is installed at the bottom of the second drain pipe 14, and the drive motor 21 is located inside the protective cover 20. The protective cover 20 can cover the drive motor 21, so that the drive motor 21 will not be damaged by moisture when draining.
[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A compact sewage treatment tank comprising a tank body (1) characterised in that: The tank (1) is coaxially equipped with a water collection hood (10), and a settling pipe (16) is coaxially connected to the bottom of the water collection hood (10). The bottom of the settling pipe (16) extends to the bottom of the tank (1), and several opening slots (23) are provided on the bottom side of the settling pipe (16). The top of the tank (1) is provided with a top cover (7), a sewage pipe (6) is installed on the top of the top cover (7), and a coil (24) is installed at the bottom of the top cover (7). One end of the coil (24) is connected to the sewage pipe (6), and the other end of the coil (24) extends into the inside of the water collection hood (10), and the drainage direction of the coil (24) is tangent to the inner wall of the water collection hood (10). A mounting plate (2) is installed on the side of the tank (1), and a delivery pump (3) is installed on the top of the mounting plate (2). The inlet end of the delivery pump (3) is connected to the medicine tank through a pipe, and a delivery pipe (4) is fixedly installed on the outlet end of the delivery pump (3). A ring pipe (18) is coaxially installed on the bottom of the top cover (7). The other end of the delivery pipe (4) passes through the top cover (7) and is connected to the ring pipe (18). Several spray heads (17) are installed on the bottom side of the ring pipe (18), and the spray heads (17) face the inside of the water collection cover (10). A second drain pipe (14) is coaxially installed at the bottom of the tank (1). A screw conveyor shaft (22) is coaxially rotatably connected inside the second drain pipe (14). The top of the screw conveyor shaft (22) extends into the tank (1) and is rotatably connected to the bottom of the settling pipe (16). A drive motor (21) is connected to the bottom of the screw conveyor shaft (22). The drive motor (21) is fixed at the bottom of the second drain pipe (14). A first drain pipe (13) is installed on one side of the bottom of the second drain pipe (14).
2. A compact sewage treatment tank according to claim 1, wherein: The sides of the settling pipe (16) and the water collection cover (10) are fixed to the inner wall of the tank (1) by support rods (19).
3. A small sewage treatment tank according to claim 1, characterized in that: The bottom edge of the top cover (7) and the top edge of the tank (1) are both provided with a rim (5). When the top cover (7) is placed on the top of the tank (1), the two rims (5) are stacked together and fastened together by bolts.
4. The compact sewage treatment tank according to claim 1, characterized in that: Several scrapers (15) are installed on the top side of the screw conveyor shaft (22), and the edge of the scraper (15) is fitted with the bottom of the tank (1) with a clearance.
5. The compact sewage treatment tank according to claim 1, characterized in that: A valve (12) is installed on the side of the first sewage pipe (13).
6. A compact sewage treatment tank according to claim 1, wherein: The bottom of the second drain pipe (14) is equipped with a protective cover (20), and the drive motor (21) is located inside the protective cover (20).
7. A compact sewage treatment tank as claimed in claim 1, wherein: A drain pipe (9) is installed on one side of the top of the tank (1), and the water inlet end of the drain pipe (9) is lower than the top of the water collection cover (10).
8. A compact sewage treatment tank according to claim 7, wherein: An annular filter screen (8) is coaxially installed at the top of the tank (1), and the water collection cover (10) passes through the annular filter screen (8), and the annular filter screen (8) is located below the drain pipe (9).
9. A compact sewage treatment tank as claimed in claim 5, wherein: Several support legs (11) are installed on the bottom edge of the tank (1). A control cabinet (25) is installed on the side of one of the support legs (11). The controller inside the control cabinet (25) is connected to the delivery pump (3), the drive motor (21) and the valve (12) respectively through wires.