A multi-stage filtering device for domestic sewage
By designing a multi-stage filtration device for domestic sewage, which utilizes superoleophobic and superhydrophobic properties for oil-water separation and suspended solids filtration, the problem of complex structure and inconvenient maintenance of traditional equipment is solved, and a highly efficient sewage purification effect is achieved.
Patent Information
- Application Number
- CN202522014931.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-19
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-19
AI Technical Summary
Traditional domestic sewage treatment equipment is complex in structure and inconvenient to maintain, and cannot effectively remove pollutants such as suspended solids, organic matter and nitrogen and phosphorus, resulting in damage to aquatic ecosystems and threats to human health.
A multi-stage filtration device for domestic sewage was designed, which utilizes superoleophobic and superhydrophobic properties for oil-water separation and combines a filter screen for impurities to perform multi-stage filtration. The device includes a combination structure of an inlet pipe, a connecting pipe, a bend, a horizontal pipe, and a filter screen to achieve oil-water separation and removal of suspended solids.
It achieves oil-water separation and suspended solids filtration, simplifies equipment structure, improves maintenance convenience, ensures the effectiveness of wastewater treatment, and protects aquatic ecosystems and human health.
Smart Images
Figure CN224677857U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of domestic sewage technology, and in particular to a multi-stage filtration device for domestic sewage. Background Technology
[0002] Domestic sewage contains a large amount of suspended solids, organic matter, nitrogen and phosphorus pollutants. If it is discharged directly without effective treatment, it will cause serious damage to the aquatic ecosystem and even threaten human health.
[0003] Traditional domestic sewage treatment equipment often suffers from problems such as complex structure and inconvenient maintenance. Therefore, this utility model proposes a multi-stage filtration device for domestic sewage to solve the above problems. Utility Model Content
[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a multi-stage filtration device for domestic sewage.
[0005] To achieve the above objectives, this utility model provides a multi-stage filtration device for domestic sewage, comprising a cylinder, an upper cylinder cover installed at the top of the cylinder, a lower cylinder cover installed at the bottom of the cylinder, an inlet mechanism for domestic sewage entry provided on one side of the cylinder, the inlet mechanism comprising an inlet pipe, a connecting pipe connected to one end of the inlet pipe, an underwater superoleophobic separation mesh installed inside the connection between the inlet pipe and the connecting pipe, the end of the connecting pipe away from the inlet pipe being closed, a bent pipe fixedly connected to the bottom of the inlet pipe, a horizontal pipe connected to the bottom end of the bent pipe, a superhydrophobic-superoleophilic copper mesh installed inside the connection between the bent pipe and the horizontal pipe, an L-shaped pipe fixedly connected to the top of the connecting pipe, the top end of the L-shaped pipe being fixedly installed through and fixedly mounted on the top of the upper cylinder cover, and an impurity filter screen installed inside the connection between the cylinder and the lower cylinder cover.
[0006] Furthermore, the cylinder and the upper cylinder cover are integrally formed, and the cylinder and the lower cylinder cover are detachably installed and fixed. Several support blocks are fixedly arranged in a ring on the lower end side wall of the cylinder, and support legs are fixedly arranged on the outer wall of the support blocks. At least three support legs are provided, and anti-slip blocks are fixedly arranged at the bottom of the support legs. A filter tube is provided through the bottom of the lower cylinder cover.
[0007] Furthermore, a first flange for connecting to a domestic sewage pipe is fixedly installed at the outer end of the inlet pipe, a bend is fixedly installed through the bottom of the inlet pipe, a second flange is fixedly installed at the inner end of the inlet pipe, and the inlet pipe is fixedly connected to the connecting pipe through the second flange.
[0008] Furthermore, a collar is fixedly sleeved on the horizontal tube, and an L-shaped support rod is fixedly installed at the bottom of the collar. The end of the L-shaped support rod away from the collar is fixedly installed on the outer wall of the cylinder.
[0009] Furthermore, a third flange is fixedly installed at the bottom of the bend, and the bend is fixed to the horizontal pipe through the third flange. A fourth flange for connecting the oil outlet pipe is fixedly installed at the end of the horizontal pipe away from the bend.
[0010] Furthermore, a collar mechanism is fixedly provided inside the lower end of the cylinder. The collar mechanism includes a first collar, which is fixedly provided on the inner wall of the cylinder. A second collar is integrally formed and fixedly provided at the bottom of the first collar. A third collar is fixedly provided at the upper end of the lower cylinder cover. The lower cylinder cover is threadedly connected to the cylinder through the third collar to achieve installation.
[0011] Furthermore, a number of overlapping blocks are fixedly arranged at equal angles on the periphery of the impurity filter screen, and a number of limiting blocks are fixedly arranged at equal angles on the inner wall of the second ring. The overlapping blocks and the limiting blocks are arranged in a one-to-one correspondence, and the overlapping blocks are placed on the limiting blocks. The outer diameter of the limiting blocks is larger than the outer diameter of the overlapping blocks.
[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, when sewage flows through the connection between the inlet pipe and the connecting pipe, the superoleophobic properties are used to perform preliminary oil-water separation, blocking the passage of oil while allowing water and some impurities to continue flowing. The superhydrophobic-superoleophilic copper mesh installed inside the connection between the bend and the horizontal pipe further separates the oil and water, blocking the passage of water and some impurities while allowing the oil to continue flowing. The separated oil is discharged through the oil outlet pipe connected to the horizontal pipe and the fourth flange at the end. The water after the two-stage oil-water separation enters the inside of the cylinder and is filtered by the impurity filter screen installed inside to remove suspended solids, particulate matter and other impurities. The purified water after impurity filtration is discharged through the filter pipe, completing the entire multi-stage filtration process.
[0013] 2. The lower cylinder cover of this utility model is connected to the cylinder by a third ring thread, thereby realizing the installation of the cylinder. The lower cylinder cover and the cylinder are easy to install and disassemble. By rotating the impurity filter screen, the mounting block and the limiting block are separated, and the impurity filter screen can be taken out for cleaning and maintenance. Attached Figure Description
[0014] To more clearly illustrate the solutions in this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0015] Figure 1 This is a right-side perspective view provided by this utility model; Figure 2 This is a left-side stereoscopic view provided by this utility model; Figure 3 This is a bottom-view perspective view provided by this utility model; Figure 4 This is a top-view perspective view provided by this utility model; Figure 5 This is the front view provided by this utility model; Figure 6 This is a sectional view provided by this utility model; Figure 7 This is an enlarged schematic diagram of part A provided by this utility model; Explanation of reference numerals in the attached figures: 1. L-shaped tube; 2. Upper cylinder cover; 3. Cylinder; 4. Lower cylinder cover; 5. Filter tube; 6. Limiting block; 7. Support leg; 8. Anti-slip block; 9. Support block; 10. Second flange; 11. First flange; 12. Inlet pipe; 13. Bend; 14. Third flange; 15. Horizontal pipe; 16. L-shaped support rod; 17. Fourth flange; 18. Collar; 19. Connecting pipe; 20. Collar mechanism; 201. First collar; 202. Second collar; 21. Third collar; 22. Impurity filter screen; 23. Stacking block. Detailed Implementation
[0016] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings, so that the advantages and features of this utility model can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0017] The terms "comprising" and "having," and any variations thereof, used in the specification, claims, and accompanying drawings of this utility model are intended to cover non-exclusive inclusion. The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order.
[0018] Please see Figure 1-7A multi-stage filtration device for domestic sewage includes a cylinder 3, with an upper cover 2 installed at the top and a lower cover 4 installed at the bottom. A sewage inlet mechanism is provided on one side of the cylinder 3, comprising an inlet pipe 12. One end of the inlet pipe 12 is connected to a connecting pipe 19. An underwater superoleophobic separator is installed inside the connection between the inlet pipe 12 and the connecting pipe 19. The end of the connecting pipe 19 away from the inlet pipe 12 is closed. A bent pipe 13 is fixedly connected to the bottom of the inlet pipe 12, and a horizontal pipe 15 is connected to the bottom end of the bent pipe 13. A superhydrophobic-superoleophilic copper mesh is installed inside the connection between the horizontal pipe 15 and the connecting pipe 19. An L-shaped pipe 1 is fixedly connected to the top of the connecting pipe 19, and the top end of the L-shaped pipe 1 is fixedly installed through the top of the upper cylinder cover 2. An impurity filter screen 22 is installed inside the connection between the cylinder 3 and the lower cylinder cover 4. After the sewage is treated and some large debris is filtered out, when the sewage flows through the connection between the inlet pipe 12 and the connecting pipe 19, the underwater superoleophobic separation screen installed inside the connection between the inlet pipe 12 and the connecting pipe 19 uses its superoleophobic properties to perform preliminary oil-water separation of the sewage, blocking the oil from passing through and allowing the water to pass through. The water and some impurities continue to flow. A superhydrophobic-superoleophilic copper mesh installed inside the connection between the bend 13 and the horizontal pipe 15 further separates the oil and water, blocking water and some impurities from passing through, while allowing the oil to continue flowing. The separated oil is discharged through the outlet pipe connected to the horizontal pipe 15 and the fourth flange 17 at the end. The water, after secondary oil-water separation, rises in the connecting pipe 19 and enters the cylinder 3 through the L-shaped pipe 1 fixedly connected to the top of the connecting pipe 19. The water entering the cylinder 3 flows downwards under gravity, and when it reaches the connection between the cylinder 3 and the lower cylinder cover 4, it is further separated by an internal... The impurity filter screen 22 filters suspended solids, particulate matter and other impurities from the water. The purified water after impurity filtration enters the lower cylinder cover 4 and is finally discharged from the device through the filter outlet pipe 5 installed through the bottom of the lower cylinder cover 4, completing the entire multi-stage filtration process. The cylinder 3 and the upper cylinder cover 2 are integrally formed and can be detachably installed and fixed. Several support blocks 9 are fixedly installed in a ring on the lower side wall of the cylinder 3. Support legs 7 are fixedly installed on the outer wall of the support blocks 9. At least three support legs 7 are provided. Anti-slip blocks 8 are fixedly installed at the bottom of the support legs 7. The filter outlet pipe 5 is installed through the bottom of the lower cylinder cover 4.
[0019] As an improvement to the above technical solution, a first flange 11 for connecting to a domestic sewage pipe is fixedly installed at the outer end of the inlet pipe 12, a bend 13 is fixedly installed through the bottom of the inlet pipe 12, a second flange 10 is fixedly installed at the inner end of the inlet pipe 12, and the inlet pipe 12 is fixedly connected to the connecting pipe 19 through the second flange 10. A collar 18 is fixedly sleeved on the horizontal pipe 15, an L-shaped support rod 16 is fixedly installed at the bottom of the collar 18, and the end of the L-shaped support rod 16 away from the collar 18 is fixedly installed on the outer wall of the cylinder 3. A third flange 14 is fixedly installed at the bottom of the bend 13, and the bend 13 is fixed to the horizontal pipe 15 through the third flange 14. A fourth flange 17 for connecting to the oil outlet pipe is fixedly installed at the end of the horizontal pipe 15 away from the bend 13.
[0020] As an improvement to the above technical solution, a collar mechanism 20 is fixedly installed inside the lower end of the cylinder 3. The collar mechanism 20 includes a first collar 201, which is fixedly installed on the inner wall of the cylinder 3. A second collar 202 is integrally formed and fixedly installed at the bottom of the first collar 201. A third collar 21 is fixedly installed at the upper end of the lower cylinder cover 4. The lower cylinder cover 4 is threadedly connected to the cylinder 3 through the third collar 21 to achieve installation. Several blocks 23 are fixedly installed at equal angles on the periphery of the impurity filter screen 22. The second collar 202... The inner wall of 02 is fixed with several limiting blocks 6 at equal angles. The mounting block 23 is set one-to-one with the limiting block 6. The mounting block 23 is mounted on the limiting block 6. The outer diameter of the limiting block 6 is larger than the outer diameter of the mounting block 23. The lower cylinder cover 4 is threadedly connected to the cylinder 3 through the third ring 21, thereby realizing the installation with the cylinder 3. The lower cylinder cover 4 and the cylinder 3 are easy to install and disassemble. By rotating the impurity filter screen 22, the mounting block 23 is separated from the limiting block 6, and the impurity filter screen 22 can be taken out for cleaning and maintenance.
[0021] The working principle and usage of this utility model: In operation, the wastewater is first treated to remove some large debris and impurities. Then, as the wastewater flows through the connection between the inlet pipe 12 and the connecting pipe 19, its superoleophobic properties perform initial oil-water separation, blocking oil from passing through while allowing water and some impurities to continue flowing. A superhydrophobic-superoleophilic copper mesh, installed inside the connection between the bend pipe 13 and the horizontal pipe 15, further separates the oil and water, blocking water and some impurities from passing through while allowing oil to continue flowing. The separated oil is discharged through the outlet pipe connected to the horizontal pipe 15 and the fourth flange 17 at the end. The water, after secondary oil-water separation, rises within the connecting pipe 19 and enters the cylinder 3 through the L-shaped pipe 1 fixedly connected to the top of the connecting pipe 19. Water entering the cylinder 3 flows downwards under gravity. When it reaches the connection between the cylinder 3 and the lower cover 4, it passes through the impurity filter screen 22 installed inside to filter out suspended solids, particulate matter, and other impurities. The purified water after impurity filtration enters the lower cover 4 and is finally discharged through the filter pipe 5 installed through the bottom of the lower cover 4, completing the entire multi-stage filtration process. The lower cover 4 is threadedly connected to the cylinder 3 through the third ring 21, thus realizing the installation of the lower cover 4 and the cylinder 3. The lower cover 4 and the cylinder 3 are easy to install and disassemble. By rotating the impurity filter screen 22, the mounting block 23 is separated from the limiting block 6, and the impurity filter screen 22 can be taken out for cleaning and maintenance.
[0022] The above description is only used to illustrate the technical solution of this utility model, and is not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Any equivalent structural or procedural transformations made using the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A multi-stage filtration device for domestic sewage, characterized in that: The device includes a cylinder (3), with an upper cylinder cover (2) installed on the top of the cylinder (3) and a lower cylinder cover (4) installed on the bottom of the cylinder (3). A sewage inlet mechanism is provided on one side of the cylinder (3), and the sewage inlet mechanism includes an inlet pipe (12). One end of the inlet pipe (12) is connected to a connecting pipe (19). An underwater superoleophobic separator is provided inside the connection between the inlet pipe (12) and the connecting pipe (19). The end of the connecting pipe (19) away from the inlet pipe (12) is sealed. The bottom of the liquid inlet pipe (12) is connected to a bent pipe (13), the bottom end of the bent pipe (13) is connected to a horizontal pipe (15), a superhydrophobic-superoleophilic copper mesh is provided inside the connection between the bent pipe (13) and the horizontal pipe (15), an L-shaped pipe (1) is fixedly connected to the top of the connecting pipe (19), the top end of the L-shaped pipe (1) is fixedly installed through the top of the upper cylinder cover (2), and an impurity filter screen (22) is installed inside the connection between the cylinder (3) and the lower cylinder cover (4). The cylinder (3) and the upper cylinder cover (2) are integrally formed. The cylinder (3) and the lower cylinder cover (4) are detachably installed and fixed. Several support blocks (9) are fixedly arranged in a ring on the lower side wall of the cylinder (3). Support legs (7) are fixedly arranged on the outer wall of the support blocks (9). At least three support legs (7) are provided. Anti-slip blocks (8) are fixedly arranged at the bottom of the support legs (7). A filter tube (5) is provided through the bottom of the lower cylinder cover (4). A collar mechanism (20) is fixedly installed inside the lower end of the cylinder (3). The collar mechanism (20) includes a first collar (201), which is fixedly installed on the inner wall of the cylinder (3). A second collar (202) is integrally formed and fixedly installed at the bottom of the first collar (201). A third collar (21) is fixedly installed at the upper end of the lower cylinder cover (4). The lower cylinder cover (4) is threadedly connected to the cylinder (3) through the third collar (21) to achieve installation.
2. The multi-stage filtration device for domestic sewage according to claim 1, characterized in that: The outer end of the inlet pipe (12) is fixedly provided with a first flange (11) for connecting to the domestic sewage pipe. The bottom of the inlet pipe (12) is fixedly provided with a bend (13). The inner end of the inlet pipe (12) is fixedly provided with a second flange (10). The inlet pipe (12) is fixedly connected to the connecting pipe (19) through the second flange (10).
3. The multi-stage filtration device for domestic sewage according to claim 2, characterized in that: A collar (18) is fixedly sleeved on the horizontal tube (15), and an L-shaped support rod (16) is fixedly installed at the bottom of the collar (18). The end of the L-shaped support rod (16) away from the collar (18) is fixedly installed on the outer wall of the cylinder (3).
4. A multi-stage filtration device for domestic sewage according to claim 3, characterized in that: A third flange (14) is fixedly provided at the bottom of the bend (13). The bend (13) is fixed to the horizontal pipe (15) through the third flange (14). A fourth flange (17) for connecting the oil outlet pipe is fixedly provided at the end of the horizontal pipe (15) away from the bend (13).
5. A multi-stage filtration device for domestic sewage according to claim 1, characterized in that: The impurity filter screen (22) has several blocks (23) fixedly arranged at equal angles on its periphery, and the inner wall of the second ring (202) has several limiting blocks (6) fixedly arranged at equal angles. The blocks (23) and the limiting blocks (6) are arranged in a one-to-one correspondence. The blocks (23) are placed on the limiting blocks (6), and the outer diameter of the limiting blocks (6) is larger than the outer diameter of the blocks (23).