Front filtering device for domestic sewage treatment

Abstract

The utility model discloses a pre-filtering device for domestic sewage treatment, which relates to the technical field of domestic sewage treatment, and is characterized in that a brake shaft is provided with a first cleaning paddle attached and opposite to a first filter cartridge along the shaft rod direction of the brake shaft, and is provided with a first conveying screw matched with a first slag charge pipe along the shaft rod direction of the brake shaft; the brake shaft is provided with a second cleaning paddle attached and opposite to the second filter cartridge along the shaft rod direction of the brake shaft, and is provided with a second conveying screw matched with the second slag material pipe and the solid phase blow-off pipe along the shaft rod direction of the brake shaft. According to the design, the first filter cartridge and the second filter cartridge which are of a conical structure are combined to filter impurities in sewage in a stepped mode, the first cleaning paddle and the second cleaning paddle operate in a combined mode to scrape, clean, gather and spirally push the impurities on the two sets of filter cartridges into the solid-phase blow-off pipe, the solid-phase blow-off pipe is opened temporarily after the sewage is filtered, and the solid-phase blow-off pipe can be recycled. The impurities can be discharged, and continuous filtering treatment work is carried out.

Description

Technical Field

[0001] This utility model relates to the field of domestic sewage treatment, and in particular to a pre-filtration device for domestic sewage treatment. Background Technology

[0002] Domestic sewage is wastewater generated in daily life, including kitchen wastewater, washing wastewater, and human and animal excrement. Treatment methods for domestic sewage include flocculation sedimentation, purification and separation. When treating domestic sewage, it is usually necessary to use pre-filtration equipment to pre-filter the solid phase pollutants in the sewage to reduce the difficulty of subsequent treatment processes. As shown in the domestic sewage pre-treatment filtration device disclosed on the China Patent Network (publication announcement number CN220078875U), this type of pre-filtration device uses a combination of multiple filter screens, including oil-absorbing cloth, activated carbon filter, PP cotton filter and fine filter screen, set inside the collection box to perform multi-stage filtration and purification of domestic sewage.

[0003] However, the aforementioned disclosed patents and existing market-used pre-treatment devices for domestic sewage have some shortcomings: Existing methods that use multi-stage filtration components to filter and collect impurities from domestic sewage often result in impurities being trapped on filter screens. These screens need to be periodically removed and cleaned for continuous filtration, making the operation cumbersome and resulting in relatively low continuous filtration performance. Therefore, those skilled in the art have provided a pre-filtration device for domestic sewage treatment to solve the problems mentioned in the background section. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a pre-filtration device for domestic sewage treatment, which solves the problem of low continuous filtration performance of existing pre-filtration devices mentioned in the background art.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a pre-filtration device for domestic sewage treatment, comprising a support frame and a filter tank installed on the top of the support frame bracket;

[0006] The filter tank is equipped with a first filter cartridge, a first slag pipe, a second filter cartridge, a second slag pipe, and a solid phase discharge pipe, which are installed sequentially from top to bottom inside the tank.

[0007] A brake motor is provided at the upper end of the filter tank, and a brake shaft passing through the filter tank is provided at the output end of the brake motor.

[0008] The brake shaft is provided with a first cleaning paddle that is in contact with and opposite to the first filter cartridge along its shaft direction, and a first conveying screw that is adapted to the first slag pipe along its shaft direction. The brake shaft is provided with a second cleaning paddle that is in contact with and opposite to the second filter cartridge along its shaft direction, and a second conveying screw that is adapted to the second slag pipe and the solid phase sewage discharge pipe along its shaft direction.

[0009] As a further technical solution of this utility model: both the first filter cylinder and the second filter cylinder are conical cylinder structures.

[0010] As a further technical solution of this utility model: the first slag tube is installed at the conical bottom end of the first filter cylinder, and the first slag tube extends to the bottom of the second filter cylinder, and the first slag tube has a hollow tube structure.

[0011] The second slag pipe is installed at the cone bottom end of the second filter cartridge, and the second slag pipe is connected to the solid phase sewage discharge pipe. The second slag pipe has a sealed pipe structure.

[0012] As a further technical solution of this utility model: the first cleaning paddle includes a first cleaning scraper and a first cleaning brush, and the first cleaning scraper and the first cleaning brush are arranged in a facing manner.

[0013] As a further technical solution of this utility model: the second cleaning paddle includes a second cleaning scraper and a second cleaning brush, and the second cleaning scraper and the second cleaning brush are arranged in a facing manner.

[0014] As a further technical solution of this utility model: the propeller length of the first conveying screw is the same as the pipe length of the first slag pipe, and the propeller length of the second conveying screw is the same as the pipe length of the second slag pipe and the solid phase sewage discharge pipe.

[0015] As a further technical solution of this utility model: a feed pipe is installed at the upper end of the filter tank, and a liquid phase drain pipe is installed at the bottom end of the filter tank.

[0016] This utility model provides a pre-filtration device for treating domestic sewage, which has the following advantages compared with the prior art:

[0017] This design of a pre-filtration treatment device for domestic sewage utilizes a combination of a first and second conical filter cartridge to perform a stepped filtration of impurities in the sewage. Impurities are filtered and retained on the two sets of filter cartridges. Simultaneously, a combination of a brake motor and brake shaft serves as the drive source, rotating the first and second cleaning paddles to scrape and collect impurities from both filter cartridges. Impurities from the first filter cartridge are collected in the first sludge pipe, and those from the second filter cartridge are collected in the second sludge pipe. Simultaneously, two sets of conveying screws rotate, pushing the impurities in a stepped spiral manner through the sludge pipes into the solid phase discharge pipe. After sewage filtration, the solid phase discharge pipe only needs to be briefly opened to discharge the impurities, allowing for continuous filtration. This design offers better operational continuity and more efficient and sustained sewage filtration. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a pre-filtration device for treating domestic sewage.

[0019] Figure 2 A first cross-sectional view of a pre-filtration device for treating domestic sewage;

[0020] Figure 3 A second cross-sectional view of a pre-filtration device for treating domestic sewage;

[0021] Figure 4 This is a schematic diagram of the assembly of a cleaning paddle and a conveying screw in a pre-filtration device for treating domestic sewage.

[0022] In the diagram: 1. Support frame; 2. Filter tank; 3. Brake motor; 4. Feed pipe; 5. Liquid phase drain pipe; 6. Solid phase drain pipe; 7. First filter cartridge; 8. First slag pipe; 9. Second filter cartridge; 10. Second slag pipe; 11. Brake shaft; 12. First cleaning paddle; 121. First cleaning scraper; 122. First cleaning brush; 13. First conveying screw; 14. Second cleaning paddle; 141. Second cleaning scraper; 142. Second cleaning brush; 15. Second conveying screw. Detailed Implementation

[0023] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4This utility model provides a technical solution for a pre-filtration device for domestic sewage treatment: a pre-filtration device for domestic sewage treatment includes a support frame 1 and a filter tank 2 installed on the top of the support frame 1. The upper end of the filter tank 2 is connected to an inlet pipe 4, and the bottom end of the filter tank 2 is connected to a liquid phase discharge pipe 5. The inlet pipe 4 is used as a sewage outlet to transport domestic sewage into the filter tank 2 for filtration treatment. The treated sewage then collects at the bottom of the filter tank 2 and is continuously discharged through the liquid phase discharge pipe 5.

[0025] Inside the filter tank 2, from top to bottom, are installed a first filter cylinder 7, a first slag pipe 8, a second filter cylinder 9, a second slag pipe 10, and a solid phase discharge pipe 6. Both the first filter cylinder 7 and the second filter cylinder 9 are conical cylinder structures. By utilizing the conical cylinder structure of the first filter cylinder 7 and the second filter cylinder 9, they serve as filter screen components to perform step-by-step filtration of domestic sewage, and as filter impurity collection components to collect the filter impurities obliquely.

[0026] A brake motor 3 is provided at the upper end of the filter tank 2, and a brake shaft 11 passing through the filter tank 2 is provided at the output end of the brake motor 3. A first cleaning paddle 12 is provided along the shaft direction of the brake shaft 11 and is in contact with and opposite to the first filter cartridge 7. The first cleaning paddle 12 includes a first cleaning scraper 121 and a first cleaning brush 122, and the first cleaning scraper 121 and the first cleaning brush 122 are arranged in opposite directions. By utilizing the combination of the first cleaning scraper 121 and the first cleaning brush 122 in the first cleaning paddle 12, the impurities generated by the filtration of the first filter cartridge 7 are scraped and cleaned in real time, ensuring the efficient and long-lasting filtration performance of the first filter cartridge 7, while scraping and collecting the impurities generated by filtration into the first slag pipe 8 for synchronous discharge.

[0027] The brake shaft 11 is provided with a second cleaning paddle 14 that is in contact with and opposite to the second filter cartridge 9 along its shaft direction. The second cleaning paddle 14 includes a second cleaning scraper 141 and a second cleaning brush 142, and the second cleaning scraper 141 and the second cleaning brush 142 are arranged in a facing manner. By utilizing the combination of the second cleaning scraper 141 and the second cleaning brush 142 in the second cleaning paddle 14, the impurities generated by the filtration of the second filter cartridge 9 are scraped and cleaned in real time. This ensures the high efficiency and long-lasting filtration performance of the second filter cartridge 9, while also scraping and collecting the impurities generated by filtration into the second slag pipe 10 for synchronous discharge.

[0028] The brake shaft 11 is provided with a first conveying screw 13 adapted to the first slag pipe 8 along its shaft direction. The first slag pipe 8 is installed at the conical bottom end of the first filter cylinder 7 and extends to the bottom of the second filter cylinder 9. The first slag pipe 8 has a hollow tube structure. The propeller length of the first conveying screw 13 is the same as the pipe length of the first slag pipe 8. Through the combination of the first slag pipe 8 and the first conveying screw 13, the impurities generated by the first filter cylinder 7 are spirally pushed downward. At the same time as the screw pushes, the centrifugal force generated by the screw is used to centrifuge and throw out the residual sewage in the impurities. Under the continuous spiral push, the impurities are pushed and unloaded to the pipe opening of the second slag pipe 10 for a secondary unloading process.

[0029] The brake shaft 11 is provided with a second conveying screw 15 along its shaft direction, which is adapted to the second slag pipe 10 and the solid phase discharge pipe 6. The second slag pipe 10 is installed at the cone bottom end of the second filter cylinder 9, and the second slag pipe 10 is connected to the solid phase discharge pipe 6. The second slag pipe 10 is a sealed pipe structure. The propeller length of the second conveying screw 15 is the same as the pipe length of the second slag pipe 10 and the solid phase discharge pipe 6. By using the combination of the second slag pipe 10 and the second conveying screw 15, the impurities collected on the second filter cylinder 9 and the impurities conveyed by the first slag pipe 8 are spirally conveyed to the solid phase discharge pipe 6. After a single sewage treatment is completed, the solid phase discharge pipe 6 can be opened briefly to discharge the collected impurities as a whole.

[0030] The working principle of this utility model is as follows: When pre-filtering domestic sewage, the domestic sewage is transported to the filter tank 2 through the feed pipe 4. After double filtration by the first filter cartridge 7 and the second filter cartridge 9, the domestic sewage is filtered in a step-like manner. The filtered sewage is collected at the bottom of the filter tank 2 and continuously discharged through the liquid phase drain pipe 5.

[0031] During continuous filtration of domestic sewage, the brake motor 3 is activated, driving the brake shaft 11 to rotate. This serves as a drive source, rotating the first cleaning paddle 12 and the second cleaning paddle 14 in combination. These paddles scrape and clean the impurities filtered and retained on the first filter cartridge 7 and the second filter cartridge 9 in real time, ensuring the high-efficiency filtration performance of both sets of filter cartridges. The scraped impurities are collected at the openings of the first slag pipe 8 and the second slag pipe 10, respectively. Simultaneously, the combined rotation of the first conveying screw 13 and the second conveying screw 15 is activated. Through the combination of the first slag pipe 8 and the first conveying screw 13, the impurities generated by the filtration of the first filter cartridge 7 are spirally pushed downwards. The impurities are conveyed and, while being pushed by the spiral, the centrifugal force generated by the spiral is used to centrifuge and throw out the residual sewage in the impurities. Finally, the impurities are spirally pushed to the opening of the second slag pipe 10 for a secondary unloading process. The combination of the second slag pipe 10 and the second conveying spiral 15 conveys the impurities collected on the second filter cartridge 9 and the impurities conveyed by the first slag pipe 8 together to the solid phase discharge pipe 6. After a single sewage treatment is completed, the solid phase discharge pipe 6 can be opened briefly to discharge the collected impurities as a whole, performing a continuous and efficient filtration process. The operation is simple and convenient, and the filtration and separation performance of domestic sewage is more efficient.

[0032] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A pre-filtering device for domestic sewage treatment, characterized in that, Support frame (1) and filter tank (2) installed on the top of the support frame (1) are included. The inside of the tank body of the filter tank (2) is sequentially and conductively provided with a first filter cylinder (7), a first residue pipe (8), a second filter cylinder (9), a second residue pipe (10) and a solid phase pollution discharge pipe (6) from top to bottom. A brake motor (3) is arranged on the upper end of the tank body of the filter tank (2), and the output end of the brake motor (3) is provided with a brake shaft (11) penetrating through the filter tank (2). The brake shaft (11) is provided with a first cleaning paddle (12) opposite to the first filter cylinder (7) along the axial direction of the brake shaft (11), and the brake shaft (11) is provided with a first conveying screw (13) matched with the first residue pipe (8) along the axial direction of the brake shaft (11), the brake shaft (11) is provided with a second cleaning paddle (14) opposite to the second filter cylinder (9) along the axial direction of the brake shaft (11), and the brake shaft (11) is provided with a second conveying screw (15) matched with the second residue pipe (10) and the solid phase pollution discharge pipe (6) along the axial direction of the brake shaft (11).

2. A pre-filter device for domestic wastewater treatment according to claim 1, characterized in that, The first filter cylinder (7) and the second filter cylinder (9) are both conical cylinder structures.

3. A pre-filter device for domestic wastewater treatment according to claim 1, characterized in that, The first residue pipe (8) is installed at the conical bottom end of the first filter cylinder (7), and extends to the bottom of the second filter cylinder (9), and the first residue pipe (8) is a hollow pipe structure. The second residue pipe (10) is installed at the conical bottom end of the second filter cylinder (9), and is connected with the solid phase pollution discharge pipe (6) in a conductive manner, and the second residue pipe (10) is a sealed pipe structure.

4. The pre-filter device for domestic sewage treatment according to claim 1, characterized in that, The first cleaning paddle (12) includes a first cleaning scraper (121) and a first cleaning brush plate (122), and the first cleaning scraper (121) and the first cleaning brush plate (122) are arranged in an opposite form.

5. The prefilter device for domestic sewage treatment according to claim 1, characterized in that, The second cleaning paddle (14) includes a second cleaning scraper (141) and a second cleaning brush plate (142), and the second cleaning scraper (141) and the second cleaning brush plate (142) are arranged in an opposite form.

6. The prefilter device for domestic sewage treatment according to claim 1, characterized in that, The length of the propeller of the first conveying screw (13) is the same as the length of the pipeline of the first residue pipe (8), and the length of the propeller of the second conveying screw (15) is the same as the length of the pipeline of the second residue pipe (10) and the solid phase pollution discharge pipe (6).

7. The prefilter device for domestic sewage treatment according to claim 1, characterized in that, The upper end of the tank body of the filter tank (2) is conductively provided with a feed pipe (4), and the bottom end of the tank body of the filter tank (2) is conductively provided with a liquid phase pollution discharge pipe (5).

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