A pretreatment device for high COD wastewater
By using a power shaft-driven propeller and cam design, the problem of easy clogging in high-salt, high-COD wastewater pretreatment devices has been solved, achieving continuous filtration and efficient wastewater treatment.
Patent Information
- Application Number
- CN202522641700.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-12
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-12-12
AI Technical Summary
Existing high-salt, high-COD wastewater pretreatment devices are prone to clogging, resulting in low filtration efficiency, inability to continuously filter wastewater, and impact on overall work efficiency.
The design employs a power shaft to drive the propeller and filter ring. The propeller rotates to clean impurities, and the cam and speed change unit drive the propeller to knock the filter ring up and down, reducing clogging. Combined with filter rings of different pore sizes, continuous filtration is achieved.
It achieves continuous filtration of high COD wastewater, reduces clogging, and improves filtration efficiency and work efficiency.
Smart Images
Figure CN224937731U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wastewater treatment technology, specifically a pretreatment device for high COD wastewater. Background Technology
[0002] High-COD wastewater, also known as high-concentration organic wastewater, refers to industrial or domestic wastewater with a chemical oxygen demand (COD) concentration typically exceeding 2000 mg / L (some industry standards may be even higher). Its core characteristics include high concentrations of organic pollutants, significant differences in biodegradability, and the potential presence of toxic substances. Treatment methods for high-concentration organic wastewater include oxidation-adsorption, incineration, and adsorption.
[0003] An investigation revealed that a Chinese invention patent discloses a pretreatment device for high-salt, high-COD wastewater (Publication No.: CN Terminal Box 1 Fixed Plate 187 Filter Plate 2 Sealing Sleeve 198A), comprising: an annular fixing groove disposed above the interior of the filter tank; four limiting rods disposed on the lower end face of the annular fixing groove; a first filter plate disposed inside the annular fixing groove; four positioning holes disposed on the outer side of the inner surface of the first filter plate; a second support spring fixedly disposed inside the annular fixing groove outside the limiting rods; and a first support spring fixedly disposed at the lower end of the tank cover outside the limiting rods; and a rotating rod disposed at the middle position of the lower end of the tank cover; a driving bevel gear fixedly disposed on the outer side of the rotating rod below the first filter plate.
[0004] Although the aforementioned patent solves the problems of filter plate clogging during the initial filtration of high-salt and high-COD wastewater and the insufficient pretreatment effect of high-salt and high-COD wastewater through this structure, it still cannot guarantee that clogging will not occur, nor can it continuously perform filtration, thereby reducing the overall work efficiency.
[0005] Therefore, this utility model provides a pretreatment device for high COD wastewater to solve the above problems. Utility Model Content
[0006] (a) Technical problems to be solved This invention provides a pretreatment device for high COD wastewater, aiming to solve the problems mentioned in the background art.
[0007] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: A pretreatment device for high COD wastewater includes a terminal box and a flow guide box connected to one side of the terminal box. A filter plate is installed on the terminal box. The flow guide box is connected to the terminal box. A transmission component is connected in the middle of the flow guide box. An intermediate cover is installed on the outside of the transmission component. A protective sleeve is connected to the intermediate cover. A vertically arranged power shaft is connected through the middle of the intermediate cover. A filter ring 1 fixedly connected to the protective sleeve and a filter ring 2 fixedly connected to the intermediate cover are rotatably connected to the power shaft. Two sets of drive paddles that cooperate with the filter ring 2 and the filter ring 1 respectively are fixedly connected to the outside of the power shaft. A flow guide channel 2 and a flow guide channel 1 extending to the terminal box are respectively connected to one side of the intermediate cover and the protective sleeve. An input pipe is connected to one side of the protective sleeve.
[0008] As a preferred technical solution of this application, the transmission assembly includes a transmission box fixedly connected to the guide box, an extension shaft fixedly connected to the bottom of the power shaft, a movable plate sealed and sleeved with the transmission box rotatably connected to the outer side of the extension shaft, a transmission rod connected to the bottom of the extension shaft via a spline drive, a speed change unit rotatably connected to the transmission box at one end of the transmission rod, a fixed plate fixedly connected to the transmission box rotatably connected to the outer side of the transmission rod, and a cam that contacts the movable plate fixedly sleeved on one side of the speed change unit.
[0009] As a preferred technical solution of this application, a sealing sleeve is rotatably fitted on the top of the transmission box, and the sealing sleeve is fixedly connected to the bottom end of the power shaft.
[0010] As a preferred technical solution of this application, the fixed plate is provided with a pass groove for the cam to pass through, and one end of the transmission unit extends to the outside of the guide box.
[0011] As a preferred technical solution of this application, a discharge pipe is fixedly connected to one side of the flow guide box, and a receiving box is provided on one side of the terminal box.
[0012] As a preferred technical solution of this application, both filter ring one and filter ring two are provided with multiple water leakage holes, and the diameter of the water leakage hole on filter ring two is smaller than that of the water leakage hole on filter ring one.
[0013] As a preferred technical solution of this application, the cross-section of the drive propeller adopts an arc-shaped structure, and a spline groove is provided at the top of the power shaft.
[0014] (III) Beneficial Effects 1. Water intake through the inlet pipe forces the corresponding drive paddle to rotate, which in turn drives the corresponding power shaft to rotate, disturbing the sewage and accelerating filtration. At the same time, the rotating drive paddle carries away the filter impurities on filter rings one and two, reducing accumulation. It can continuously push the impurities through guide channels one and two to the terminal box for guided removal, thereby achieving continuous filtration and improving overall work efficiency.
[0015] 2. Driven by the power shaft, the corresponding cam can be rotated through the transmission, which in turn drives the moving plate to drive the drive paddle to strike the filter ring up and down, causing it to vibrate. This further reduces clogging and speeds up the filtration process. Attached Figure Description
[0016] Figure 1 This is a front view of a pretreatment device for high COD wastewater. Figure 2 This is a side view of a pretreatment device for high COD wastewater. Figure 3 This is a partial front view of a pretreatment device for high COD wastewater. Figure 4 This is a partial rear view of a pretreatment device for high COD wastewater. Figure 5 This is a front sectional view of a pretreatment device for high COD wastewater.
[0017] In the picture: 1. Terminal box; 2. Filter plate; 3. Flow guide channel one; 4. Protective sleeve; 5. Power shaft; 6. Drive propeller; 7. Filter ring one; 8. Inlet pipe; 9. Outlet pipe; 10. Intermediate cover; 11. Flow guide box; 12. Transmission box; 13. Filter ring two; 14. Moving plate; 15. Cam; 16. Speed change unit; 17. Extension shaft; 18. Fixing plate; 19. Sealing sleeve; 20. Flow guide channel two. Detailed Implementation
[0018] 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.
[0019] This utility model provides a pretreatment device for high COD wastewater, such as... Figure 1-5As shown, this pretreatment device for high COD wastewater includes a terminal box 1 and a diversion box 11 connected to one side of the terminal box 1. A filter plate 2 is installed on the terminal box 1. The diversion box 11 is connected to the terminal box 1. Wastewater, after being filtered by the filter plate 2, can pass through the terminal box 1 into the diversion box 11 and then be discharged. Larger pollutants are trapped on the filter plate 2 for collection and subsequent treatment. A transmission assembly is connected in the middle of the diversion box 11 for power transmission. An intermediate cover 10 is installed on the outside of the transmission assembly, and a protective sleeve 4 is connected to the intermediate cover 10. A vertically arranged power shaft 5 is connected through the middle of the intermediate cover 10, and a component rotatably connected to the protective sleeve 4 is fixedly connected to the power shaft 5. The filter ring 7 is connected to the filter ring 13, which is fixedly connected to the intermediate cover 10. Two sets of drive paddles 6 are fixedly connected to the outside of the power shaft 5, which cooperate with the filter ring 13 and the filter ring 7 respectively. Driven by the transmission assembly, the drive paddles 6 rotate and push to clean the pollutants accumulated on the filter ring 7 and the filter ring 13. The intermediate cover 10 and the protective sleeve 4 are respectively connected to the guide channel 20 and the guide channel 3 extending to the terminal box 1. The protective sleeve 4 is connected to the input pipe 8. The pollutants fall onto the filter plate 2 through the guide channel 20 and the guide channel 3 for further filtration and interception. At the same time, water enters through the input pipe 8 and drives the drive paddles 6 to rotate, realizing the input of power.
[0020] The transmission assembly includes a transmission box 12 fixedly connected to the guide box 11, an extension shaft 17 fixedly connected to the bottom of the power shaft 5, a movable plate 14 rotatably connected to the outer side of the extension shaft 17 and sealed to the transmission box 12, a transmission rod connected to the bottom of the extension shaft 17 via a spline drive, a speed change unit 16 rotatably connected to the transmission box 12 at one end of the transmission rod, a fixed plate 18 fixedly connected to the transmission box 12 rotatably connected to the outer side of the transmission rod, and a cam 15 fixedly sleeved on one side of the speed change unit 16, which contacts the movable plate 14. During the rotation of the drive shaft 5 driven by the propeller 6, the transmission rod is driven by the extension shaft 17, which in turn drives the speed change unit 16 to rotate. The speed change unit 16 drives the cam 15 to rotate, indirectly raising the moving plate 14, thereby causing the drive shaft 5 to move up and down, which in turn drives the drive propeller 6 to move up and down, impacting and vibrating the filter rings 13 and 7 to prevent the accumulation and blockage of organic matter. The speed change unit 16 is an existing mechanism that combines existing mechanisms such as transmission shafts and gears to form a corresponding transmission to achieve torque change.
[0021] A sealing sleeve 19 is rotatably fitted on the top of the transmission box 12. The sealing sleeve 19 is fixedly connected to the bottom end of the power shaft 5. The sealing sleeve 19 is made of rubber and seals the inside of the transmission box 12 to ensure the safety and stability of the internal transmission equipment.
[0022] The fixed plate 18 is provided with a passage groove for the cam 15 to pass through. One end of the transmission unit 16 extends to the outside of the guide box 11. The passage groove is set to ensure the stability of the cam 15 during rotation. The transmission shaft in the transmission unit 16 extends to the outside of the guide box 11. According to specific usage needs, it can be connected to an external power input device through a coupling to perform external forced drive, so that the power shaft 5 is forced to rotate.
[0023] A discharge pipe 9 is fixedly connected to one side of the diversion box 11, and a receiving box is provided on one side of the terminal box 1. The discharge pipe 9 discharges the filtered wastewater to ensure continuous filtration of the entire device. The receiving box filters the filtered organic impurities, thereby achieving continuous filtration.
[0024] Both filter ring 7 and filter ring 13 are provided with multiple drainage holes. The drainage holes on filter ring 13 are smaller in diameter than those on filter ring 7. Different drainage holes of different diameters are used to ensure different levels of filtration, thereby increasing the filtration effect while ensuring the filtration speed.
[0025] The cross-section of the drive propeller 6 adopts an arc-shaped structure, and a spline groove is provided at the top of the power shaft 5. The cross-section of the arc-shaped mechanism ensures that the water flow can drive the corresponding drive propeller 6. The spline groove can be connected to an external power mechanism and cooperate with the speed change unit 16 to drive the power shaft 5 to rotate under external forced force.
[0026] Working principle: During operation, sewage is pumped in through the inlet pipe 8 into the protective sleeve 4. The flowing sewage forces the drive paddle 6 to rotate, which in turn drives the power shaft 5 to rotate, thereby causing the drive paddle 6 at the bottom and the extension shaft 17 to rotate. The rotation of the drive paddle 6 causes the impurities located on the filter ring 13 or filter ring 7 to rotate. They slide down onto the filter plate 2 under gravity at the guide channel 3 and guide channel 20. After being filtered again by the filter plate 2, the sewage enters the bottom of the terminal box 1 and is discharged through the guide box 11 and the discharge pipe 9. The impurities pass through the filter plate 2 and enter the outside for collection, waiting for treatment. During the rotation of the extension shaft 17, the transmission unit 16 and the cam 15 will rotate. The cam 15 intermittently raises the moving plate 14, causing the power shaft 5 and the drive paddle 6 to move upward and then downward. This causes the drive paddle 6 to intermittently strike the filter ring 13 and filter ring 7, reducing clogging and accelerating the flow of sewage.
[0027] 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 pretreatment device for high COD wastewater, characterized in that: The device includes a terminal box (1) and a flow guide box (11) connected to one side of the terminal box (1). A filter plate (2) is provided on the terminal box (1). The flow guide box (11) is connected to the terminal box (1). A transmission assembly is connected in the middle of the flow guide box (11). An intermediate cover (10) is provided on the outside of the transmission assembly. A protective sleeve (4) is connected to the intermediate cover (10). A vertically arranged power shaft (5) is connected through the middle of the intermediate cover (10). The power shaft (5) rotates on the power shaft (5). A filter ring 1 (7) is fixedly connected to the protective sleeve (4) and a filter ring 2 (13) is fixedly connected to the intermediate cover (10). Two sets of drive paddles (6) that cooperate with the filter ring 2 (13) and the filter ring 1 (7) are fixedly connected to the outside of the power shaft (5). A guide channel 2 (20) and a guide channel 1 (3) extending to the terminal box (1) are respectively connected to one side of the intermediate cover (10) and the protective sleeve (4). An input pipe (8) is connected to one side of the protective sleeve (4).
2. The pretreatment device for high COD wastewater according to claim 1, characterized in that: The transmission assembly includes a transmission box (12) fixedly connected to the guide box (11), an extension shaft (17) fixedly connected to the bottom of the power shaft (5), a movable plate (14) rotatably connected to the outer side of the extension shaft (17) and the sealing sleeve (19) of the transmission box (12), a transmission rod connected to the bottom of the extension shaft (17) via a spline drive, a speed change unit (16) rotatably connected to the transmission box (12) at one end of the transmission rod, a fixed plate (18) fixedly connected to the transmission box (12) rotatably connected to the outer side of the transmission rod, and a cam (15) in contact with the movable plate (14) fixedly sleeved on one side of the speed change unit (16).
3. The pretreatment device for high COD wastewater according to claim 2, characterized in that: A sealing sleeve (19) is rotatably fitted on the top of the transmission box (12), and the sealing sleeve (19) is fixedly connected to the bottom end of the power shaft (5).
4. The pretreatment device for high COD wastewater according to claim 3, characterized in that, The fixed plate (18) is provided with a passage groove for the cam (15) to pass through, and one end of the speed change unit (16) extends to the outside of the guide box (11).
5. The pretreatment device for high COD wastewater according to claim 4, characterized in that: A discharge pipe (9) is fixedly connected to one side of the flow guide box (11), and a receiving box is provided on one side of the terminal box (1).
6. The pretreatment device for high COD wastewater according to claim 4, characterized in that: Both filter ring 1 (7) and filter ring 2 (13) are provided with multiple water leakage holes. The diameter of the water leakage hole on filter ring 2 (13) is smaller than that of the water leakage hole on filter ring 1 (7).
7. The pretreatment device for high COD wastewater according to claim 1, characterized in that: The cross-section of the drive propeller (6) is arc-shaped, and the top of the power shaft (5) is provided with a spline groove.