Filtering device for wastewater treatment

Abstract

The utility model relates to a filter device for wastewater treatment, which relates to the technical field of wastewater treatment and comprises a tank body and a filter plate, the filter plate divides the inside of the tank body into an upper dosing cavity and a lower filter cavity, a stirring component is arranged in the dosing cavity, a filter piece is arranged in the filter cavity, and the stirring component is arranged in the filter piece. A baffle for blocking the filtering holes is rotationally arranged in the filtering cavity, and a driving assembly is arranged on the tank body. The driving assembly drives the baffle to rotate and block the filtering holes, the stirring assembly is started to uniformly mix wastewater and chemicals, suspended solids in the wastewater and the chemicals are coagulated and precipitated, the baffle rotates to open the filtering holes, and the wastewater enters the filtering cavity after passing through the filtering holes and is filtered under the action of the filtering piece, so that wastewater pretreatment is realized; the filtering holes can be closed or opened through the baffle, so that the mixing time of the medicament and the wastewater is controlled, the treatment efficiency of the medicament is improved in cooperation with the stirring assembly, and the filtering effect in the wastewater pretreatment stage is improved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a filtration device for wastewater treatment. Background Technology

[0002] Wastewater treatment utilizes physical, chemical, and biological methods to purify wastewater, reduce pollution, and ultimately achieve wastewater recycling and reuse, making full use of water resources. Wastewater is generally divided into domestic wastewater and industrial wastewater. Domestic wastewater refers to the wastewater discharged by people in their daily lives. This type of wastewater is mainly polluted by domestic waste and human excrement. The quantity, composition, and concentration of pollutants are related to people's living habits and water consumption. Industrial wastewater refers to the wastewater generated in industrial production. The types and concentrations of pollutants generated by different industries vary significantly.

[0003] Wastewater treatment typically involves two stages: pretreatment and treatment. Pretreatment removes suspended solids from the wastewater through filtration or chemical dosing. Treatment removes dissolved harmful substances and organic pollutants from the pretreated wastewater using methods such as activated carbon adsorption, membrane separation, or biological treatment. Better pretreatment results in better subsequent treatment stages and also saves on costs.

[0004] In related technologies, one can refer to Chinese utility model patent with authorization announcement number CN221565961U, which discloses a multi-stage filtration device for wastewater treatment, including a tank and a pretreatment tank. The pretreatment tank is equipped with a stirring rod and a separator. The tank is equipped with a layer of quartz sand, anthracite manganese sand and micro-electrolysis packing. The wastewater is pretreated by adding chemicals and stirring, so that the suspended solids in it coagulate and settle. Then, the wastewater passes through the separator and then through multiple filtration layers to achieve the pretreatment of wastewater.

[0005] However, the separatory disc is in direct contact with the pretreatment tank, so some wastewater enters the filter layer before it is fully mixed with the reagent. Furthermore, the filter layers are fixed inside the tank, which is not conducive to maintenance, disassembly, and replacement, thus reducing the filtration effect in the wastewater pretreatment stage. Utility Model Content

[0006] In order to improve the filtration effect in the wastewater pretreatment stage, this utility model provides a filtration device for wastewater treatment.

[0007] This application provides a wastewater treatment filtration device, which adopts the following technical solution:

[0008] A wastewater treatment filtration device includes a tank, a filter plate inside the tank dividing the tank into an upper dosing chamber and a lower filtration chamber. The filter plate has multiple filter holes communicating with the dosing chamber and the filtration chamber. A stirring assembly is provided in the dosing chamber, a filter element is provided in the filtration chamber, and a baffle is rotatably provided in the filtration chamber to block the filter holes. A drive assembly for driving the baffle to rotate is provided on the tank.

[0009] By adopting the above technical solution, the drive component starts and drives the baffle to rotate, blocking the filter holes. Then, wastewater is introduced into the dosing chamber, and the reagent is also added into the dosing chamber. The stirring component is started to mix the wastewater and reagent evenly, causing the suspended solids to coagulate and settle. Then, the drive component starts and drives the baffle to rotate, opening the filter holes. Some suspended solids are blocked by the filter plate and remain in the dosing chamber. Wastewater and other suspended impurities with a diameter smaller than the filter holes enter the filter chamber after passing through the filter holes and are filtered by the filter element. This achieves wastewater pretreatment. The baffle can be used to close or open the filter holes to control the mixing time of the reagent and wastewater. Combined with the stirring component, the treatment efficiency of the reagent is improved, thereby improving the filtration effect in the wastewater pretreatment stage.

[0010] Optionally, there are two baffles, which rotate relative to each other and control the opening or closing of the filter holes. There are two drive components, each corresponding to one of the baffles.

[0011] Optionally, the driving component includes:

[0012] A rotating rod is rotatably disposed inside the filter chamber with one end extending out of the tank body, and a baffle is fixedly mounted on the rotating rod;

[0013] A drive motor is mounted on the tank body and is connected to the rotating rod via a transmission.

[0014] By adopting the above technical solution, the drive motor starts and drives the rotating rod to rotate, which in turn drives the baffle to rotate. The two baffles move closer to each other or further apart, thereby blocking or opening the filter holes.

[0015] Optionally, the dosing chamber is provided with a dosing box, which is coaxially fixed to the top wall of the dosing chamber. The top of the dosing box is provided with a dosing tube extending out of the dosing chamber, and the bottom of the dosing box is evenly distributed with multiple dosing holes.

[0016] By adopting the above technical solution, the agent is added to the dosing box through the dosing pipe. The agent drips into the dosing chamber through multiple dosing holes. At the same time, the stirring component is activated to stir the wastewater, so that the agent and wastewater are mixed evenly. The addition of multiple dosing holes increases the dosing points and improves the mixing efficiency of the agent and wastewater, thereby improving the filtration effect in the wastewater pretreatment stage.

[0017] Optionally, the stirring assembly includes a stirring shaft and a stirring motor. The stirring shaft is coaxially rotatable inside the dosing chamber. The stirring shaft extends vertically downward and passes through the dosing box. Multiple stirring blades are evenly distributed on the stirring shaft. The stirring motor is located outside the dosing chamber and its output end is connected to the stirring shaft for transmission.

[0018] By adopting the above technical solution, the stirring motor starts and drives the stirring shaft to rotate, which in turn drives the stirring paddle to rotate, thereby achieving the stirring of wastewater and reagents. By setting the dosing box and stirring shaft to be coaxial, it is easier for the stirring paddle to mix the reagents and wastewater, thereby improving the pretreatment effect of wastewater.

[0019] Optionally, the filter chamber includes an upper buffer chamber and a lower working chamber. The inner diameter of the buffer chamber is larger than the inner diameter of the working chamber, and the height of the buffer chamber is larger than the radius of the baffle. The filter element is disposed in the working chamber. When the baffle is rotated to a vertical position, the filter element is located below the baffle.

[0020] By adopting the above technical solution, the baffle rotates away from the filter plate. When the baffle is rotated to a vertical position, it is located in the buffer chamber, and all filter holes are open. After passing through the filter holes, the wastewater flows through the buffer chamber and then into the working chamber, where it is filtered by the filter element. The buffer chamber houses the baffle, reducing the probability of the baffle partially blocking the filter holes after rotation. This saves the wastewater passage time, thereby increasing the filtration time for wastewater pretreatment and improving the filtration efficiency of the wastewater pretreatment stage.

[0021] Optionally, the tank body has an installation port on the outside for easy installation of the filter element. The installation port is connected to the working chamber. The tank body is rotatably provided with a sealing door to seal the installation port. The working chamber is provided with a limiting plate located below the installation port. The filter element is disposed on the limiting plate.

[0022] By adopting the above technical solution, the sealing door is rotated to open the installation port, and then the filter element is pushed into the filter chamber and pressed against the limiting plate. The sealing door is then closed to seal the installation port. The operation can be repeated when disassembling and replacing the filter element. This achieves the installation positioning and disassembly and replacement of the filter element, thereby improving the filtration effect in the wastewater pretreatment stage by replacing the filter element.

[0023] Optionally, the filter element includes an installation cylinder and filter layers. The installation cylinder is cylindrical with an open top. The outer diameter of the installation cylinder is the same as the inner diameter of the working chamber. Multiple positioning plates are spaced apart inside the installation cylinder. Multiple filter layers are provided, and the multiple filter layers are placed on the corresponding positioning plates. The bottom of the installation cylinder has multiple water passage holes. After installation, the installation cylinder abuts against the limiting plate.

[0024] By adopting the above technical solution, multiple filter layers are placed sequentially in the installation cylinder according to requirements. Since the filter layers are flexible, they can undergo partial deformation and be installed sequentially on the corresponding positioning plates. Then, the sealing door is opened, and the installation cylinder is pushed to abut against the limiting plate. The outer wall of the installation cylinder fits against the inner wall of the filter chamber. Wastewater enters the installation cylinder after passing through the buffer chamber and is filtered from top to bottom through multiple filter layers. The filtered wastewater is discharged through the water passage and collected at the bottom of the tank, thereby improving the convenience of filter element disassembly, replacement, and installation positioning.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The drive assembly starts, causing the baffle to rotate and block the filter holes. Then, wastewater is introduced into the dosing chamber, and the reagent is also added. The stirring assembly is activated to mix the wastewater and reagent evenly, causing suspended solids to coagulate and settle. Then, the drive assembly starts again, causing the baffle to rotate and opening the filter holes. Some suspended solids are blocked by the filter plate and remain in the dosing chamber. Wastewater and other suspended impurities with diameters smaller than the filter holes enter the filter chamber after passing through the filter holes. Under the action of the filter element, filtration is carried out, thereby achieving wastewater pretreatment. The baffle can be used to close or open the filter holes to control the mixing time of the reagent and wastewater. Combined with the stirring assembly, the treatment efficiency of the reagent is improved, thereby improving the filtration effect in the wastewater pretreatment stage.

[0027] 2. Rotate the sealing door to open the installation port, then push the filter element into the working chamber and make the filter element abut against the limit plate. Close the sealing door to seal the installation port. Repeat the operation when disassembling and replacing. This realizes the installation positioning and disassembly and replacement of the filter element. By replacing the filter element, the filtration effect of the wastewater pretreatment stage can be improved. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of this application;

[0029] Figure 2 This is a partial sectional view of the tank in this application, in which both baffles are in a horizontal position;

[0030] Figure 3 This is a schematic diagram of the stirring assembly in this application, in which the dosing box is shown to have exploded;

[0031] Figure 4 This is a partial sectional view of the tank in this application, in which one of the baffles is in a vertical position and the sealing door is in an open position;

[0032] Figure 5 This is a structural schematic diagram of the filter element in this application, in which a partial cross-sectional view of the mounting cylinder is shown.

[0033] Reference numerals: 1. Tank body; 11. Dosing chamber; 12. Filter chamber; 121. Buffer chamber; 122. Working chamber; 13. Baffle; 14. Water inlet pipe; 15. Water outlet pipe; 16. Installation port; 17. Sealing door; 18. Limiting plate; 2. Filter plate; 21. Filter hole; 3. Agitator assembly; 31. Agitator shaft; 311. Agitator paddle; 32. Agitator motor; 4. Filter element; 41. Mounting cylinder; 411. Water passage hole; 42. Filter layer; 43. Positioning plate; 5. Drive assembly; 51. Rotating rod; 52. Drive motor; 6. Dosing box; 61. Dosing pipe; 62. Dosing hole; 63. Avoidance hole. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0035] This application discloses a filtration device for wastewater treatment.

[0036] Reference Figure 1 and Figure 2 A wastewater treatment filtration device includes a tank 1, a filter plate 2 inside the tank 1, the filter plate 2 dividing the tank 1 into an upper dosing chamber 11 and a lower filtration chamber 12, the filter plate 2 having a plurality of filter holes 21 connecting the dosing chamber 11 and the filtration chamber 12, a stirring assembly 3 inside the dosing chamber 11, a filter element 4 inside the filtration chamber 12, a baffle 13 rotatably installed inside the filtration chamber 12 to block the filter holes 21, and a driving assembly 5 on the tank 1 for driving the baffle 13 to rotate.

[0037] Reference Figure 1 and Figure 2 The tank body 1 is cylindrical. The projections of the dosing chamber 11 and the filter chamber 12 in the vertical direction are both circular. The inner diameter of the dosing chamber 11 is smaller than the inner diameter of the filter chamber 12. A water supply pipe 14 for introducing wastewater is provided on the outer surface of the top of the dosing chamber 11. The water supply pipe 14 is connected to the inside of the dosing chamber 11. A water outlet pipe 15 for discharging filtered wastewater is provided on the outer surface of the bottom of the filter chamber 12. The water outlet pipe 15 is connected to the inside of the filter chamber 12.

[0038] Reference Figure 1 , Figure 2 and Figure 3 The dosing chamber 11 is provided with a dosing box 6, which is coaxially fixed to the top wall of the dosing chamber 11. The top of the dosing box 6 is provided with a dosing tube 61 extending out of the dosing chamber 11. Multiple dosing holes 62 are evenly distributed at the bottom of the dosing box 6. The middle of the dosing box 6 has a clearance hole 63 that penetrates the upper and lower surfaces of the dosing box 6. The multiple dosing holes 62 are symmetrically distributed along the axis of the dosing box 6.

[0039] Reference Figure 1 , Figure 2 and Figure 3The stirring assembly 3 includes a stirring shaft 31 and a stirring motor 32. The stirring shaft 31 is coaxially rotatably disposed in the dosing chamber 11. The stirring shaft 31 extends vertically downward and passes through the clearance hole 63. Multiple stirring paddles 311 are evenly distributed on the stirring shaft 31. The multiple stirring paddles 311 are located between the clearance hole 63 and the filter plate 2, and the multiple stirring paddles 311 are arranged in a circumferential array around the axis of the stirring shaft 31. The stirring motor 32 is disposed outside the dosing chamber 11 and its output end is connected to the top end of the stirring shaft 31 for transmission.

[0040] Reference Figure 2 and Figure 4 The filter chamber 12 includes a buffer chamber 121 located above and a working chamber 122 located below. The inner diameter of the buffer chamber 121 is larger than the inner diameter of the working chamber 122. Two baffles 13 are provided. The two baffles 13 rotate relative to each other and control the opening or closing of the filter hole 21. Both baffles 13 are located inside the buffer chamber 121, and the height of the buffer chamber 121 is greater than the radius of the baffles 13.

[0041] Reference Figure 2 and Figure 4 Two drive components 5 are provided, each corresponding to one of the baffles 13. The following description uses only one drive component 5 as an example. The drive component 5 includes a rotating rod 51 and a drive motor 52. The rotating rod 51 is rotatably located in the buffer chamber 121 and extends horizontally with one end extending out of the tank body 1. The baffle 13 is fixed on the rotating rod 51. The drive motor 52 is located on the outer wall of the tank body 1 and its output end is connected to the rotating rod 51 for transmission. When the two baffles 13 rotate relative to each other and abut together, the two baffles 13 cooperate to completely block the filter plate 2. When the baffle 13 rotates to a vertical position, the filter element 4 is located below the baffle 13.

[0042] Reference Figure 1 , Figure 2 and Figure 4 The outer surface of the tank body 1 is provided with an installation port 16 for easy installation of the filter element 4. The installation port 16 is connected to the working chamber 122. The tank body 1 is provided with a sealing door 17 to seal the installation port 16. The working chamber 122 is provided with two limiting plates 18. The two limiting plates 18 are arranged opposite each other and located below the installation port 16. The filter element 4 is placed on the limiting plates 18.

[0043] Reference Figure 2 , Figure 4 and Figure 5 The filter element 4 includes an installation cylinder 41 and a filter layer 42. The installation cylinder 41 is cylindrical and has an open top. The outer diameter of the installation cylinder 41 is the same as the inner diameter of the working chamber 122. After installation, the installation cylinder 41 abuts against the limiting plate 18.

[0044] Reference Figure 2 , Figure 4 and Figure 5The mounting cylinder 41 is provided with multiple annular positioning plates 43 at intervals. Multiple filter layers 42 are provided and placed on the corresponding positioning plates 43. In this embodiment, multiple filter layers 42 are all filter membranes. The filter pore diameters of the multiple filter membranes are not consistent. The filter pore diameters of the filter membranes gradually decrease from top to bottom. In other feasible embodiments, the filter layer 42 can be multiple inconsistent filter components. The bottom of the mounting cylinder 41 has multiple water passage holes 411. The inner diameter of the water passage holes 411 is not less than the inner diameter of the filter hole 21, and the water passage holes 411 are located above the water outlet pipe 15.

[0045] Reference Figure 2 , Figure 4 and Figure 5 First, open the sealing door 17 and install the installation cylinder 41 with the filter layer 42 into the working chamber 122. Then, start the two drive motors 52 simultaneously to drive the baffle 13 to rotate and block the filter hole 21. Next, pass the wastewater into the dosing chamber 11 and add the reagent into the dosing chamber 11 through the dosing box 6. Start the stirring shaft 31 to mix the wastewater and reagent evenly, so that the suspended solids in it can coagulate and settle. Then, start the drive motor 52 to drive the baffle 13 to rotate back into the buffer chamber 121, so that the filter hole 21 opens.

[0046] Reference Figure 2 , Figure 4 and Figure 5 Some suspended solids are blocked by the filter plate 2 and remain in the dosing chamber 11. Wastewater and other suspended impurities with a diameter smaller than the filter hole 21 enter the filter chamber 12 after passing through the filter hole 21 and the buffer chamber 121. The wastewater is filtered through multiple filter layers 42. The filtered wastewater is discharged after passing through the water passage 411 and the water outlet pipe 15. This achieves the wastewater pretreatment process.

[0047] The working principle of this application embodiment is as follows:

[0048] The baffle 13 can be used to close or open the filter hole 21, thereby controlling the mixing time of the reagent and wastewater. In conjunction with the stirring shaft 31, the treatment efficiency of the reagent is improved, thus improving the filtration effect in the wastewater pretreatment stage.

[0049] Rotate the sealing door 17 to open the installation port 16, then push the filter element 4 into the working chamber 122 and make the filter element 4 abut against the limiting plate 18. Close the sealing door 17 to seal the installation port 16. Repeat the operation when disassembling and replacing. This realizes the installation positioning and disassembly and replacement of the filter element 4. By replacing the filter element 4, the filtration effect of the wastewater pretreatment stage is improved.

[0050] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A filtration device for wastewater treatment, characterized in that: The container includes a tank (1), which is equipped with a filter plate (2). The filter plate (2) divides the inside of the tank (1) into an upper dosing chamber (11) and a lower filtering chamber (12). The filter plate (2) has multiple filter holes (21) that connect the dosing chamber (11) and the filtering chamber (12). The dosing chamber (11) is equipped with a stirring assembly (3). The filtering chamber (12) is equipped with a filter element (4). The filtering chamber (12) is equipped with a baffle (13) that rotatably blocks the filter holes (21). The tank (1) is equipped with a driving assembly (5) that drives the baffle (13) to rotate.

2. The wastewater treatment filtration device according to claim 1, characterized in that: Two baffles (13) are provided, and the two baffles (13) rotate relative to each other to control the opening or closing of the filter hole (21). Two drive components (5) are provided and correspond one-to-one with the baffles (13).

3. The wastewater treatment filtration device according to claim 2, characterized in that: The driving component (5) includes: Rotating rod (51), the rotating rod (51) is rotatably disposed in the filter chamber (12) and one end extends out of the tank body (1), the baffle (13) is fixed on the rotating rod (51); A drive motor (52) is mounted on the tank body (1) and is connected to the rotating rod (51) for transmission.

4. A filtration device for wastewater treatment according to claim 1, characterized in that: The dosing chamber (11) is provided with a dosing box (6), which is coaxially fixed to the top wall of the dosing chamber (11). The top of the dosing box (6) is provided with a dosing tube (61) extending out of the dosing chamber (11), and the bottom of the dosing box (6) is evenly distributed with a plurality of dosing holes (62).

5. A filtration device for wastewater treatment according to claim 4, characterized in that: The stirring assembly (3) includes a stirring shaft (31) and a stirring motor (32). The stirring shaft (31) is coaxially rotatably disposed in the dosing chamber (11). The stirring shaft (31) extends vertically downward and passes through the dosing box (6). Multiple stirring paddles (311) are evenly distributed on the stirring shaft (31). The stirring motor (32) is disposed outside the dosing chamber (11) and its output end is connected to the stirring shaft (31) for transmission.

6. A filtration device for wastewater treatment according to claim 1, characterized in that: The filter chamber (12) includes a buffer chamber (121) located above and a working chamber (122) located below. The inner diameter of the buffer chamber (121) is larger than the inner diameter of the working chamber (122), and the height of the buffer chamber (121) is larger than the radius of the baffle (13). The filter element (4) is disposed in the working chamber (122). When the baffle (13) is rotated to a vertical position, the filter element (4) is located below the baffle (13).

7. A filtration device for wastewater treatment according to claim 6, characterized in that: The tank body (1) has an installation port (16) on its outside for easy installation of the filter element (4). The installation port (16) is connected to the working chamber (122). The tank body (1) is rotatably provided with a sealing door (17) to seal the installation port (16). The working chamber (122) is provided with a limiting plate (18). The limiting plate (18) is located below the installation port (16). The filter element (4) is located on the limiting plate (18).

8. A filtration device for wastewater treatment according to claim 7, characterized in that: The filter element (4) includes an installation cylinder (41) and a filter layer (42). The installation cylinder (41) is cylindrical and open at the top. The outer diameter of the installation cylinder (41) is the same as the inner diameter of the working chamber (122). Multiple positioning plates (43) are spaced apart inside the installation cylinder (41). Multiple filter layers (42) are provided, and multiple filter layers (42) are placed on the corresponding positioning plates (43). The bottom of the installation cylinder (41) has multiple water passage holes (411). After installation, the installation cylinder (41) abuts against the limiting plate (18).

Images