Combined filter for upgrading domestic sewage

Abstract

This utility model discloses a combined filter for upgrading and retrofitting domestic sewage treatment, specifically relating to the field of filter technology. It includes a main tank containing a large-pore filter. One end of the large-pore filter is fixedly connected to a small-pore filter. A differential pore pressure device is located above the large-pore filter. This device includes: a large-pore pressure plate located above the large-pore filter, and a small-pore pressure plate located above the small-pore filter; a guide column fixed to the upper surface of the large-pore filter, with a sliding block on its outer wall; and a linkage rod fixed between the block and the small-pore pressure plate. This utility model uses a differential pore pressure device, where the linkage rod drives the small-pore pressure plate to insert into the small-pore filter, rapidly squeezing and settling the flocs inside both the large-pore and small-pore filters. This achieves rapid sedimentation of suspended flocs of different sizes, resulting in faster dual sedimentation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and more specifically, to a combined filter for upgrading and retrofitting domestic sewage treatment. Background Technology

[0002] In the upgrading and renovation of domestic sewage, the core function of the combined filter is to efficiently remove suspended solids through the synergistic effect of physical filtration and chemical sedimentation, ensuring that the effluent quality consistently meets the standards. It also has the advantages of strong shock resistance, small footprint, and low operating cost.

[0003] Among existing published documents, patent publication number CN214528570U discloses a combined filter bed of carbon and sand. This technology uses an upward flow carbon tank and a sand tank with a central channel, providing a new combined filter bed that effectively avoids the need for an intermediate booster pump station, saving costs and energy consumption. The combined arrangement of the upward flow carbon and sand filters saves land and construction costs, and reduces management costs. However, this patent has the following problems.

[0004] During the upgrading and renovation of domestic sewage, a large amount of flocs will be generated. After double filtration, a large amount of flocs will still be in a suspended state, making it difficult to achieve rapid sedimentation of suspended flocs of different sizes, resulting in low double sedimentation efficiency. Utility Model Content

[0005] To overcome the aforementioned deficiencies of the prior art, this utility model provides the following technical solution: a combined filter tank for upgrading and retrofitting domestic sewage treatment, comprising a main tank, wherein a large-pore filter tank is placed inside the main tank, and a small-pore filter tank is fixedly connected to one end of the large-pore filter tank. A differential pore pressure member is provided above the large-pore filter tank, and the differential pore pressure member includes: A large-hole pressure plate is located above the large-hole filter tank, and a small-hole pressure plate is provided above the small-hole filter tank; A guide column is fixed to the upper surface of the large-pore filter tank, and a sleeve block slides on the outer wall of the guide column; A linkage rod is fixed between the sleeve block and the small hole pressure plate. A connecting strip is fixed on one side of the sleeve block, and the connecting strip is fixedly connected to the large hole pressure plate.

[0006] In a preferred embodiment, the large-hole pressure plate is used to be lowered and inserted into the interior of the large-hole filter tank, and the small-hole pressure plate is used to be inserted into the inner wall of the small-hole filter tank.

[0007] In a preferred embodiment, a gap is provided between the large-hole pressure plate and the small-hole pressure plate, and the cross-sectional area of ​​the large-hole pressure plate is smaller than the cross-sectional area of ​​the inner wall of the large-hole filter tank.

[0008] In a preferred embodiment, the cross-sectional area of ​​the perforated pressure plate is smaller than the cross-sectional area of ​​the perforated filter tank.

[0009] In a preferred embodiment, one end of the main pool is fixedly connected to an inlet pipe, and the other end of the main pool is fixedly connected to an outlet pipe.

[0010] In a preferred embodiment, a limiting block is fixed to the top of the guide post, and the limiting block is used to limit the sleeve block.

[0011] In a preferred embodiment, a handle is fixed to the other side of the sleeve; A rod is inserted through the inside of the sleeve block. The rod passes through the guide post. One end of the rod is fixed with a head, and the other end of the rod is fixed with a push block.

[0012] The technical effects and advantages of this utility model are as follows: 1. This utility model adopts a differential orifice pressing component. The sleeve block moves downward and moves downward along the outer wall of the guide column. The linkage rod drives the small orifice pressing plate to be inserted into the small orifice filter tank. The large orifice pressing plate squeezes the large amount of flocs inside the large orifice filter tank, quickly squeezing and settling the flocs inside the large orifice filter tank and the small orifice filter tank. This allows for the rapid settling of suspended flocs of different sizes, resulting in faster double settling efficiency. 2. In this utility model, while the unlocking sleeve moves down along the outer wall of the guide post, one hand holds the outer wall of the handle and the other hand holds the end, and the insertion rod separates from the inner wall of the sleeve and the guide post, resulting in a faster separation speed. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the combined filter tank for upgrading and retrofitting domestic sewage according to this utility model.

[0014] Figure 2 This is a schematic diagram of the vertical cross-section structure of the combined filter tank for upgrading and retrofitting domestic sewage according to this utility model.

[0015] Figure 3 This is a partial structural diagram of the connection between the macroporous filter tank and the guide column of this utility model.

[0016] Figure 4 This is a top view schematic diagram of the combined filter tank for upgrading and retrofitting domestic sewage according to this utility model.

[0017] Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0018] The attached diagram is labeled as follows: 1. Main pool; 2. Large-pore filter pool; 3. Small-pore filter pool; 4. Large-pore pressure plate; 5. Small-pore pressure plate; 6. Guide column; 7. Sleeve block; 8. Linkage rod; 9. Connecting strip; 10. Inlet pipe; 11. Outlet pipe; 12. Limiting block; 13. Handle; 14. Insert rod; 15. End; 16. Push block. Detailed Implementation

[0019] 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.

[0020] like Figure 1 - Figure 5 The diagram shows a combined filter for upgrading and retrofitting domestic sewage treatment. This combined filter is equipped with differential pore pressure components. The differential pore pressure components enable rapid sedimentation of suspended flocs of different sizes, with double sedimentation being even more efficient. The specific structural configuration of the differential pore pressure components is as follows.

[0021] In this embodiment, as Figure 1 - Figure 3 As shown, a large-pore filter tank 2 is placed inside the main tank 1. One end of the large-pore filter tank 2 is fixedly connected to a small-pore filter tank 3. A differential pore pressing component is provided above the large-pore filter tank 2. The differential pore pressing component includes: a large-pore pressing plate 4, located above the large-pore filter tank 2, and a small-pore pressing plate 5, located above the small-pore filter tank 3; a guide post 6, fixed to the upper surface of the large-pore filter tank 2, with a sleeve block 7 sliding on the outer wall of the guide post 6; and a linkage rod 8, fixed between the sleeve block 7 and the small-pore pressing plate 5. A connecting strip 9 is fixed to one side of the sleeve block 7 and is fixedly connected to the large-pore pressing plate 4. The large-pore pressing plate 4 is used to move downward and insert into the interior of the large-pore filter tank 2, and the small-pore pressing plate 5 is used to insert into the inner wall of the small-pore filter tank 3. A gap is provided between the large-pore pressing plate 4 and the small-pore pressing plate 5. The cross-sectional area of ​​the large-pore pressing plate 4 is smaller than the cross-sectional area of ​​the inner wall of the large-pore filter tank 2. The cross-sectional area of ​​the small-pore pressing plate 5 is smaller than the cross-sectional area of ​​the small-pore filter tank 3.

[0022] In this embodiment, as Figure 1 As shown, one end of the main tank 1 is fixedly connected to the inlet pipe 10, and the other end of the main tank 1 is fixedly connected to the outlet pipe 11. Domestic sewage is transported to the macroporous filter tank 2 through the inlet pipe 10, and discharged through the outlet pipe 11 after filtration.

[0023] In this embodiment, as Figure 3As shown, a limiting block 12 is fixed to the top of the guide post 6, and the limiting block 12 is used to limit the sleeve block 7. By supporting the top of the guide post 6 with the limiting block 12, the limiting block 12 can achieve stable limiting operation of the sleeve block 7, and the limiting effect is better.

[0024] This technology, used in the combined filter system for upgrading domestic sewage treatment, involves transporting domestic sewage to the large-pore filter tank 2 via the inlet pipe 10. Flocculant is then poured into both the large-pore filter tank 2 and the small-pore filter tank 3. The sewage passes through the large pores of the large-pore filter tank 2 and into the small-pore filter tank 3, where it flows to the left via the small pores and exits through the outlet pipe 11. This leftward flow through the outlet pipe 11 results in a combined filtration process involving the large-pore filter tank 2, the small-pore filter tank 3, and the main tank 1. After filtration, pulling the insertion rod 14 prevents it from contacting the sleeve block 7 and the guide column 6, and the limiting block 12 restricts the movement of the upper surface of the sleeve block 7.

[0025] The sleeve 7 moves downward, guided downward along the outer wall of the guide column 6. The sleeve 7 drives the linkage rod 8 to move downward, and the linkage rod 8 drives the small hole pressure plate 5 to insert into the small hole filter tank 3. The small hole pressure plate 5 squeezes a large amount of flocculent material. At the same time, the sleeve 7 drives the connecting strip 9 to move downward, and the connecting strip 9 drives the large hole pressure plate 4 to move downward. The large hole pressure plate 4 enters the large hole filter tank 2 and squeezes the large amount of flocculent material inside the large hole filter tank 2, quickly squeezing and settling the flocculent material inside the large hole filter tank 2 and the small hole filter tank 3.

[0026] In this embodiment, as Figure 4 - Figure 5 As shown, a handle 13 is fixed to the other side of the sleeve block 7; a rod 14 is inserted through the inside of the sleeve block 7, the rod 14 is used to pass through the guide post 6, one end of the rod 14 is fixed with an end head 15, and the other end of the rod 14 is fixed with a push block 16.

[0027] When using the combined filter tank for upgrading and retrofitting domestic sewage, the unlocking sleeve 7 moves down along the outer wall of the guide column 6, while one hand holds the outer wall of the handle 13 and the other hand holds the end 15. Pulling the end 15 causes the insertion rod 14 to move, which in turn causes the push block 16 to move. In this way, the insertion rod 14 is separated from the inner wall of the sleeve 7 and the guide column 6.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A combined filter tank for upgrading and retrofitting domestic sewage treatment, comprising a main tank (1), characterized in that: The main tank (1) contains a large-pore filter tank (2), one end of which is fixedly connected to a small-pore filter tank (3). A differential pore pressure member is provided above the large-pore filter tank (2), and the differential pore pressure member includes: A large-hole pressure plate (4) is located above the large-hole filter tank (2), and a small-hole pressure plate (5) is provided above the small-hole filter tank (3). The guide column (6) is fixed to the upper surface of the macroporous filter tank (2), and the outer wall of the guide column (6) is slidably fitted with a sleeve block (7). Linkage rod (8) is fixed between sleeve block (7) and small hole pressure plate (5). A connecting strip (9) is fixed on one side of sleeve block (7), and the connecting strip (9) is fixedly connected to large hole pressure plate (4).

2. The combined filter for upgrading and retrofitting domestic sewage treatment plants according to claim 1, characterized in that: The large-hole pressure plate (4) is used to move down and insert into the interior of the large-hole filter pool (2), and the small-hole pressure plate (5) is used to insert into the inner wall of the small-hole filter pool (3).

3. The combined filter for upgrading and retrofitting domestic sewage treatment plants according to claim 1, characterized in that: A gap is provided between the large-hole pressure plate (4) and the small-hole pressure plate (5), and the cross-sectional area of ​​the large-hole pressure plate (4) is smaller than the cross-sectional area of ​​the inner wall of the large-hole filter pool (2).

4. The combined filter for upgrading and retrofitting domestic sewage treatment plants according to claim 1, characterized in that: The cross-sectional area of ​​the perforated pressure plate (5) is smaller than that of the perforated filter tank (3).

5. The combined filter for upgrading and retrofitting domestic sewage treatment plants according to claim 1, characterized in that: One end of the main pool (1) is fixedly connected to an inlet pipe (10), and the other end of the main pool (1) is fixedly connected to an outlet pipe (11).

6. The combined filter for upgrading and retrofitting domestic sewage treatment plants according to claim 1, characterized in that: The top of the guide post (6) is fixed with a limiting block (12), which is used to limit the sleeve block (7).

7. The combined filter for upgrading and retrofitting domestic sewage treatment plants according to claim 1, characterized in that: A handle (13) is fixed to the other side of the sleeve (7); A rod (14) is inserted through the inside of the sleeve (7). The rod (14) is used to pass through the guide post (6). One end of the rod (14) is fixed with an end head (15), and the other end of the rod (14) is fixed with a push block (16).

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