A sedimentation device for wastewater treatment

Abstract

This utility model discloses a sedimentation device for wastewater treatment, including a sedimentation tank and a sedimentation funnel. The top of the sedimentation funnel is connected to the bottom of the sedimentation tank. A stirring component for stirring wastewater is installed on the outside of the sedimentation tank, and one end of the stirring component extends into the interior of the sedimentation tank. This utility model addresses the problems of low reagent mixing efficiency, easy pipe clogging, and difficult filter cleaning in traditional sedimentation devices by cooperating with the stirring component, the filtration component, and the injection component. The stirring rod is designed as a hollow injection structure to achieve integrated reagent mixing and shorten the mixing time. The filter cylinder rotates in conjunction with the stirring rod to dynamically clean the filter screen and reduce clogging. At the same time, the liquid level sensor and the controller are linked to achieve precise control, avoiding reagent waste and untimely sewage discharge. It also simplifies the pipeline system, reduces maintenance costs, and effectively improves the efficiency and stability of wastewater treatment.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection technology, specifically to a sedimentation device for wastewater treatment. Background Technology

[0002] In the field of wastewater treatment, sedimentation and separation, as a core treatment step, is a key process for removing suspended solids, colloidal impurities, and heavy metal particles from wastewater, directly affecting the efficiency of subsequent treatment processes and the final effluent quality.

[0003] Traditional sedimentation devices separate the addition of chemicals from the mixing equipment. Chemicals are injected through pipes on the side wall or top of the tank before mixing. This method has significant drawbacks: the mixing of chemicals is time-consuming and uneven, resulting in low reaction efficiency, high cost, and difficulty in meeting water quality standards. The independent piping system is complex and prone to clogging and leakage. The filter components are fixed and cannot be dynamically cleaned, leading to prominent filter clogging problems that seriously affect treatment efficiency. Therefore, we need to propose a sedimentation device for wastewater treatment. Utility Model Content

[0004] The purpose of this invention is to provide a sedimentation device for wastewater treatment to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a sedimentation device for wastewater treatment, comprising a sedimentation tank and a sedimentation funnel, wherein the top of the sedimentation funnel is connected to the bottom of the sedimentation tank;

[0006] The sedimentation tank is equipped with a stirring assembly for stirring the wastewater, and one end of the stirring assembly extends into the interior of the sedimentation tank.

[0007] The sedimentation tank is equipped with a filter assembly for filtering wastewater; one end of the filter assembly is connected to one end of the stirring assembly.

[0008] An injection assembly for adding reagents to the sedimentation tank is installed on the outside of the sedimentation tank, and one end of the injection assembly is connected to one end of the stirring assembly.

[0009] Preferably, the stirring assembly includes a motor, a pulley set, a first fixed plate, a stirring rod, and a stirring blade. The motor is mounted on the outside of the sedimentation tank via the first fixed plate. The top of the stirring rod is rotatably connected to the output end of the motor via the pulley set. The stirring rod is rotatably mounted at the center of the top of the sedimentation tank and extends into the interior of the sedimentation tank. The stirring blade is located at the end of the stirring rod. The interior of the stirring rod is hollow, and the surface of the stirring rod has several oblique holes.

[0010] Preferably, the filtration assembly includes a filter cylinder, a filter screen, a keyway, and a connecting key. The filter cylinder is installed inside the sedimentation tank, the filter screen is installed on the inner wall of the filter cylinder, the top of the filter cylinder has a keyway that is compatible with the connecting key, the filter cylinder is installed on the stirring rod via the connecting key, and mounting plates are symmetrically installed at the bottom of the filter cylinder, all of which are in contact with the inner wall of the sedimentation tank.

[0011] Preferably, the injection assembly includes a water pump, a reagent tank, a drain pipe, and a second fixing plate, wherein the water pump and the reagent tank are installed outside the sedimentation tank via the second fixing plate.

[0012] Preferably, the pumping end of the water pump is connected to one end of the reagent tank, the outlet end of the water pump is connected to one end of the drain pipe, and the end of the drain pipe away from the water pump is connected to the top of the stirring rod.

[0013] Preferably, an intermediate filter screen is detachably installed at the bottom of the filter cartridge. The intermediate filter screen is fitted against the inner wall of the sedimentation tank. A water outlet pipe is installed on the outside of the intermediate filter screen and is connected to one side of the sedimentation tank.

[0014] Preferably, the bottom of the sedimentation funnel is connected to a drain pipe, a valve is installed on the surface of the drain pipe, the end of the drain pipe away from the sedimentation funnel is connected to a sewage tank, a support frame is installed on the outside of the sedimentation funnel, a liquid level sensor is installed inside the sedimentation tank, the liquid level sensor is electrically connected to a controller, and the controller is electrically connected to a water pump.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention addresses the problems of low reagent mixing efficiency, easy pipe clogging, and difficult filter cleaning in traditional sedimentation devices by coordinating the stirring, filtering, and injection components. The stirring rod is designed as a hollow injection structure, achieving integrated reagent mixing and shortening mixing time. The linkage between the filter cylinder and the stirring rod reduces clogging. Simultaneously, the linkage between the liquid level sensor and the controller enables precise control, preventing reagent waste and untimely sewage discharge. Furthermore, it simplifies the piping system, reduces maintenance costs, and effectively improves wastewater treatment efficiency and stability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the sedimentation tank of this utility model;

[0019] Figure 3 This is a schematic diagram of the filter cartridge structure of this utility model;

[0020] Figure 4This is a schematic diagram of the stirring assembly structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the oblique hole structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the water outlet pipe structure of this utility model.

[0023] In the diagram: 1. Sedimentation tank; 2. Sedimentation funnel; 3. Motor; 4. Pulley assembly; 5. First fixed plate; 6. Stirring rod; 7. Inclined hole; 8. Stirring blade; 9. Filter cylinder; 10. Filter screen; 11. Keyway; 12. Connecting key; 13. Water pump; 14. Chemical tank; 15. Drain pipe; 16. Second fixed plate; 17. Intermediate filter screen; 18. Water outlet pipe; 19. Sewage pipe; 20. Valve; 21. Support frame; 22. Liquid level sensor; 23. Controller; 24. Mounting plate; 25. Wastewater tank. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-6 This utility model provides a technical solution: a sedimentation device for sewage treatment, including a sedimentation tank 1 and a sedimentation funnel 2. The top of the sedimentation funnel 2 is connected to the bottom of the sedimentation tank 1. The sedimentation tank 1 serves as the core container for the preliminary treatment and sedimentation of sewage, providing space for stirring, filtration and chemical reaction. During operation, the sewage undergoes stirring, filtration and sedimentation in the tank, separating solid impurities and clear water. The sedimentation funnel 2 receives the sewage containing a large amount of impurities discharged from the bottom of the sedimentation tank 1. Its conical structure accelerates the sedimentation of impurities and collects them in a concentrated manner, and finally discharges them through the sewage pipe 19.

[0026] A stirring assembly for agitating wastewater is installed on the outside of the sedimentation tank 1. One end of the stirring assembly extends into the interior of the sedimentation tank 1. The stirring assembly includes a motor 3, a pulley set 4, a first fixing plate 5, a stirring rod 6, and stirring blades 8. The motor 3 is mounted on the outside of the sedimentation tank 1 via the first fixing plate 5. The motor 3 provides stirring power, which is transmitted to the stirring rod 6 via the pulley set 4, causing the stirring blades 8 to rotate. The first fixing plate 5 fixes the position of the motor 3, ensuring that the motor 3 is stably mounted on the outside of the sedimentation tank 1 and ensuring stable power transmission. The top of the stirring rod 6 is rotatably connected to the output end of the motor 3 via the pulley set 4. The pulley set 4 transmits power to the motor 3, and the stirring can be adjusted by replacing pulleys of different sizes. The stirring rod 6 rotates at different speeds to suit various treatment needs. It is mounted at the center of the top of the sedimentation tank 1 and extends into the tank. The stirring rod 6 connects the motor 3 to the stirring blades 8, transmitting power to the sedimentation tank 1. The hollow structure and inclined hole 7 of the stirring rod 6 disperse the injected chemicals into the wastewater. The stirring blades 8 are located at the end of the stirring rod 6. The stirring rod 6 is hollow inside, and its surface has several inclined holes 7. The stirring blades 8 rotate and agitate the wastewater, promoting uniform mixing of the chemicals and wastewater, accelerating the chemical reaction, and preventing impurities from settling. The inclined holes 7 serve as the chemical outlet, allowing the chemicals to be sprayed obliquely downwards from the inside of the stirring rod 6, where they are thoroughly mixed with the wastewater under the action of the stirring blades 8.

[0027] The sedimentation tank 1 is equipped with a filter assembly for filtering wastewater. One end of the filter assembly is connected to one end of the stirring assembly. The filter assembly includes a filter cylinder 9, a filter screen 10, a keyway 11, and a connecting key 12. The filter cylinder 9 is installed inside the sedimentation tank 1, and the filter screen 10 is installed inside the filter cylinder 9 to intercept larger particulate impurities in the wastewater. The detachable design facilitates cleaning and replacement of the filter screen 10. The filter screen 10 is installed on the inner wall of the filter cylinder 9 and has some gaps. The filter screen 10 uses its porous structure to filter suspended solids in the wastewater, achieving preliminary solid-liquid separation. Meanwhile, a secondary filter is installed at the bottom of the filter cylinder 9. The filter screen 17 further filters out fine impurities in the wastewater, improving the quality of the effluent. The top of the filter cylinder 9 is provided with a keyway 11, which cooperates with the connecting key 12 for easy installation and maintenance. The keyway 11 and the connecting key 12 are adapted to each other, and the connecting key 12 is embedded in the keyway 11 to fix the filter cylinder 9 on the stirring rod 6, so that the filter cylinder 9 can rotate synchronously with the stirring rod 6. The filter cylinder 9 is installed on the stirring rod 6 through the connecting key 12. The bottom of the filter cylinder 9 is symmetrically equipped with mounting plates 24, which are all in contact with the inner wall of the sedimentation tank 1. The mounting plates 24 help to fix the filter cylinder 9 and enhance its stability.

[0028] An injection assembly for adding reagents to the sedimentation tank 1 is installed on the outside of the sedimentation tank 1. One end of the injection assembly is connected to one end of the stirring assembly. The injection assembly includes a water pump 13, a reagent tank 14, a drain pipe 15, and a second fixing plate 16. The water pump 13 and the reagent tank 14 are installed on the outside of the sedimentation tank 1 through the second fixing plate 16. The second fixing plate 16 fixes the water pump 13 and the reagent tank 14 to ensure that the injection assembly is installed firmly. The water pump 13 draws the reagent from the reagent tank 14 and delivers it to the inside of the stirring rod 6 through the drain pipe 15 to realize the quantitative injection of the reagent.

[0029] The pump 13's pumping end is connected to one end of the chemical tank 14, which stores chemicals for wastewater treatment and provides a source of chemicals for the pump 13. The pump 13's outlet end is connected to one end of the drain pipe 15, and the end of the drain pipe 15 away from the pump 13 is connected to the top of the stirring rod 6. The drain pipe 15 connects the pump 13 and the stirring rod 6, delivering the chemicals to the top of the stirring rod 6 and then injecting them into the wastewater through the inclined hole 7.

[0030] A secondary filter screen 17 is detachably installed at the bottom of the filter cartridge 9. The secondary filter screen 17 is attached to the inner wall of the sedimentation tank 1. A water outlet pipe 18 is installed on the outside of the secondary filter screen 17. The water outlet pipe 18 is connected to one side of the sedimentation tank 1. The water outlet pipe 18 discharges the clean water filtered by the secondary filter screen 17 and delivers it to the subsequent treatment stage or reuse.

[0031] A drain pipe 19 is connected to the bottom of the sedimentation funnel 2, connecting the sedimentation funnel 2 to the wastewater tank 25. The drain pipe 19 discharges the wastewater containing impurities collected in the sedimentation funnel 2 into the wastewater tank 25. A valve 20 is installed on the surface of the drain pipe 19 to control its opening and closing, regulate the discharge flow rate and time, and prevent backflow of wastewater. The end of the drain pipe 19 furthest from the sedimentation funnel 2 is connected to the wastewater tank 25. A support frame 21 is installed on the outside of the sedimentation funnel 2 to support... The sedimentation funnel 2 is kept stable to prevent structural tilting due to the gravity of the sewage. A level sensor 22 is installed inside the sedimentation tank 1. The level sensor 22 monitors the sewage level in the sedimentation tank 1 in real time and transmits the data to the controller 23 to provide a basis for the injection of chemicals and the operation of the equipment. The level sensor 22 is electrically connected to the controller 23, and the controller 23 is electrically connected to the water pump 13. The controller 23 receives the signal from the level sensor 22 and controls the start and stop of the water pump 13 according to the preset program to realize the automatic quantitative addition of chemicals.

[0032] Working principle: Wastewater enters the sedimentation tank 1. The motor 3 drives the stirring rod 6 and stirring blade 8 to rotate via the pulley group 4, so that the agent sprayed from the inclined hole 7 of the stirring rod 6 is fully mixed with the wastewater. The filter screen 10 in the filter cylinder 9 and the bottom intermediate filter screen 17 perform two-stage filtration of the wastewater. The clean water is discharged through the outlet pipe 18, and the impurities settle down. The sedimentation funnel 2 receives the wastewater containing impurities at the bottom of the sedimentation tank 1. The conical structure accelerates the sedimentation. The wastewater is discharged through the drain pipe 19 to the wastewater tank 25. The liquid level sensor 22 monitors the liquid level of the sedimentation tank 1 and feeds it back to the controller 23. The controller 23 controls the water pump 13 to draw the agent from the agent tank 14 and inject it into the stirring rod 6 through the drain pipe 15 to realize the automatic quantitative addition of the agent.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sedimentation device for wastewater treatment, comprising a sedimentation tank (1) and a sedimentation funnel (2), characterized in that: The top of the sedimentation funnel (2) is connected to the bottom of the sedimentation tank (1); The sedimentation tank (1) is equipped with a stirring assembly for stirring wastewater, one end of which extends into the interior of the sedimentation tank (1). The sedimentation tank (1) is equipped with a filter assembly for filtering wastewater; one end of the filter assembly is connected to one end of the stirring assembly. An injection assembly for adding reagents to the interior of the sedimentation tank (1) is installed on the outside of the sedimentation tank (1), and one end of the injection assembly is connected to one end of the stirring assembly.

2. The sedimentation device for wastewater treatment according to claim 1, characterized in that: The stirring assembly includes a motor (3), a pulley assembly (4), a first fixing plate (5), a stirring rod (6), and a stirring blade (8). The motor (3) is installed on the outside of the sedimentation tank (1) through the first fixing plate (5). The top of the stirring rod (6) is rotatably connected to the output end of the motor (3) through the pulley assembly (4). The stirring rod (6) is rotatably installed at the center of the top of the sedimentation tank (1) and extends into the interior of the sedimentation tank (1). The stirring blade (8) is located at the end of the stirring rod (6). The interior of the stirring rod (6) is hollow. Several oblique holes (7) are opened on the surface of the stirring rod (6).

3. A sedimentation device for wastewater treatment according to claim 2, characterized in that: The filter assembly includes a filter cylinder (9), a filter screen (10), a keyway (11), and a connecting key (12). The filter cylinder (9) is installed inside the sedimentation tank (1). The filter screen (10) is installed on the inner wall of the filter cylinder (9). The top of the filter cylinder (9) is provided with a keyway (11), which is adapted to the connecting key (12). The filter cylinder (9) is installed on the stirring rod (6) through the connecting key (12). The bottom of the filter cylinder (9) is symmetrically equipped with mounting plates (24), which are all in contact with the inner wall of the sedimentation tank (1).

4. A sedimentation device for wastewater treatment according to claim 3, characterized in that: The injection assembly includes a water pump (13), a reagent tank (14), a drain pipe (15), and a second fixing plate (16). The water pump (13) and the reagent tank (14) are installed outside the sedimentation tank (1) via the second fixing plate (16).

5. A sedimentation device for wastewater treatment according to claim 4, characterized in that: The pump (13) has its pumping end connected to one end of the medicine tank (14), the pump (13) has its outlet end connected to one end of the drain pipe (15), and the drain pipe (15) has its end away from the pump (13) connected to the top of the stirring rod (6).

6. A sedimentation device for wastewater treatment according to claim 3, characterized in that: The bottom of the filter cylinder (9) is detachably equipped with an intermediate filter screen (17), which is attached to the inner wall of the sedimentation tank (1). An outlet pipe (18) is installed on the outside of the intermediate filter screen (17), and the outlet pipe (18) is connected to one side of the sedimentation tank (1).

7. A sedimentation device for wastewater treatment according to claim 2, characterized in that: The bottom of the sedimentation funnel (2) is connected to a drain pipe (19), and a valve (20) is installed on the surface of the drain pipe (19). The end of the drain pipe (19) away from the sedimentation funnel (2) is connected to a sewage tank (25). A support frame (21) is installed on the outside of the sedimentation funnel (2). A liquid level sensor (22) is installed inside the sedimentation tank (1). The liquid level sensor (22) is electrically connected to a controller (23), and the controller (23) is electrically connected to a water pump (13).

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