A circulating filter device for wastewater

Abstract

The application relates to a circulating filter device for wastewater, which is used for filtering and purifying sewage and comprises a water inlet assembly, a filter assembly and a water outlet assembly. The water inlet assembly comprises a water inlet pipe, a slurry pipe, a filter pipe and a filter plate; the filter assembly comprises a slurry filter unit, an impurity filter unit and a connecting pipe, the impurity filter units are arranged in a circle and are spaced apart with the slurry filter unit as the center, the slurry pipe is rotationally connected with the slurry filter unit, and the connecting pipe is connected with two adjacent impurity filter units; and the water outlet assembly comprises a settler, a water outlet pipe, a circulating pipe and a flushing pipe, and the settler is connected with the slurry filter unit and each impurity filter unit. Through the cooperation of the water inlet assembly, the filter assembly and the water outlet assembly, the circulating filter device for wastewater can realize the function of filtering different impurities in water, and the efficiency of filtering and purifying sewage is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment, and in particular to a wastewater circulation filtration device. Background Technology

[0002] With the rapid development of the water treatment industry in recent years, wastewater circulation filtration devices are playing an increasingly important role in ecological environmental protection. However, currently available wastewater circulation filtration devices use filter units with different filter media connected in series to filter wastewater. This complex piping connection technology results in low filtration efficiency, thus reducing their practicality. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of complex pipeline connections in the prior art, thereby providing a wastewater circulation filtration device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A wastewater circulation filtration device, comprising:

[0006] The water inlet assembly includes an inlet pipe, a slurry pipe, a filter pipe, and a filter plate. One end of the slurry pipe is connected to the inlet pipe, and one end of the filter pipe is connected to either the inlet pipe or the slurry pipe. The filter plate is disposed inside the filter pipe. Because one end of the slurry pipe is connected to the inlet pipe, one end of the filter pipe is connected to either the inlet pipe or the slurry pipe, and the filter plate is disposed inside the filter pipe, the wastewater circulation filtration device has an inlet water path, a circulation water path, and a flushing water path, thereby realizing the functions of filtration, circulation filtration, and pipe cleaning.

[0007] The filtration assembly includes a slurry filtration unit, multiple impurity filtration units, and multiple connecting pipes. Each impurity filtration unit is arranged circumferentially around the slurry filtration unit. The slurry pipes are rotatably connected to the slurry filtration units, and each filtration pipe can communicate with at least one of the impurity filtration units. The connecting pipes connect two adjacent impurity filtration units. Because the impurity filtration units are arranged circumferentially around the slurry filtration unit, the slurry pipes are rotatably connected to the slurry filtration units, and the filtration pipes can communicate with at least one of the impurity filtration units, the wastewater circulation filtration device can selectively filter the impurities according to the different impurities in the filtered water, thereby improving the wastewater treatment efficiency of the wastewater circulation filtration device.

[0008] The effluent assembly includes a settling tank, an effluent pipe, a circulation pipe, and a flushing pipe. The settling tank is connected to the slurry filtration unit and each of the impurity filtration units. One end of the effluent pipe is connected to the settling tank, one end of the circulation pipe is connected to the effluent pipe, and the other end of the circulation pipe is connected to the inlet pipe. One end of the flushing pipe is connected to the effluent pipe, and the other end of the flushing pipe is connected to the filter pipe. Because the effluent pipe is connected to the settling tank, the circulation pipe is connected to the effluent pipe, and the flushing pipe is connected to the effluent pipe, the wastewater circulation filtration device can discharge the filtered and qualified wastewater through the effluent pipe, and allow the unqualified wastewater to enter the inlet assembly through the circulation pipe for further filtration.

[0009] Preferably, the water inlet assembly further includes a first valve, which is disposed on the filter pipe. The connection between the flushing pipe and the filter pipe is located downstream of the filter plate, and the connection between the flushing pipe and the filter pipe is located upstream of the first valve. Because the connection between the flushing pipe and the filter pipe is downstream of the filter plate, the wastewater circulation filtration device can use the filter plate to pre-filter large particulate impurities in the water to be filtered during water injection, achieving better filtration results while preventing clogging of the impurity filtration unit. Because the connection between the flushing pipe and the filter pipe is upstream of the first valve, the flushing water flow during flushing of the wastewater circulation filtration device will carry large particulate impurities remaining on the filter plate into the slurry filtration unit, keeping the filter plate clean and enabling cleaning of the filter plate without disassembling it.

[0010] Preferably, the water inlet assembly further includes a second valve, which is disposed on the slurry pipe; the filter pipe communicates with the slurry pipe, and the second valve is located below the connection between the filter pipe and the slurry pipe. Because the filter pipe communicates with the slurry pipe, and the second valve is located below the connection between the filter pipe and the slurry pipe, when the wastewater circulation filtration device is filtering, the first valve remains open, and the second valve remains closed, preventing the water to be filtered from entering the slurry filtration unit. When the wastewater circulation filtration device is rinsing, the first valve and the fifth valve remain closed, and the second valve and the third valve remain open, with the third valve remaining open, preventing the rinsing water from entering the impurity filtration unit.

[0011] Preferably, the effluent assembly further includes a third valve, a fourth valve, and a fifth valve. The third valve is disposed on the flushing pipe and is located upstream of the filter plate; the fourth valve is disposed on the circulation pipe; and the fifth valve is disposed on the effluent pipe and is located downstream of the connection point between the flushing pipe, the circulation pipe, and the effluent pipe. Because the third valve is disposed on the flushing pipe and is located upstream of the filter plate; the fourth valve is disposed on the circulation pipe; and the fifth valve is disposed on the effluent pipe and is located downstream of the connection point between the flushing pipe, the circulation pipe, and the effluent pipe, the fifth valve, the third valve, and the second valve remain closed, while the fourth valve and the first valve remain open during wastewater circulation filtration. This prevents the circulating filtration water from entering the flushing pipe and the slurry filtration unit.

[0012] Preferably, the water inlet assembly further includes a telescopic pipe, which is telescopically connected to the filter pipe and can be sealed in communication with at least one of the impurity filtration units. Because the telescopic pipe is telescopically connected to the filter pipe and can be sealed in communication with at least one of the impurity filtration units, the filtered water flows through the filter pipe and the impurity filtration units in a sealed state.

[0013] Preferably, in the vertical direction, the upper surfaces of each impurity filtration unit are flush, the lower surfaces of each impurity filtration unit decrease sequentially along the circumference, and the height of each connecting pipe decreases sequentially along the circumference. Because the upper surfaces of each impurity filtration unit are flush in the vertical direction, the lower surfaces of each impurity filtration unit decrease sequentially along the circumference, and the height of each connecting pipe decreases sequentially along the circumference, the impurity filtration units can, under the influence of gravity and guided by the connecting pipes, allow water to flow into the next impurity filtration unit, thereby achieving connectivity between the various impurity filtration units and filtering different impurities in the wastewater.

[0014] Preferably, the filtration assembly further includes multiple filter media, each of which is disposed within a specific impurity filtration unit. Furthermore, in the vertical direction, at least two adjacent connecting pipes between the filter media are provided with the filter media. Because each filter media is disposed within a specific impurity filtration unit, and in the vertical direction, at least two adjacent connecting pipes between the filter media are provided with the filter media, the impurity filtration unit can be selected based on the impurities in the wastewater.

[0015] Preferably, the filtration assembly further includes a plurality of sixth valves, each of which is disposed within each of the impurity filtration units. Vertically, the sixth valve is flush with or shorter than the lower connecting pipe. Because each sixth valve is disposed within each of the impurity filtration units, and vertically, the sixth valve is flush with or shorter than the lower connecting pipe, any of the impurity filtration units can be selected as the final wastewater outlet.

[0016] Preferably, the filter assembly further includes a plurality of seventh valves, each of which is disposed within a connecting pipe. Because the filter assembly includes a plurality of seventh valves, each of which is disposed within a connecting pipe, the impurity filtration unit can selectively open or close the seventh valves, thereby enabling selective activation of the impurity filtration unit for wastewater filtration.

[0017] Preferably, the flushing pipe and the circulation pipe are flexible pipes. Because the flushing pipe and the circulation pipe are flexible, their angles and positions can be adjusted according to the position determined after the filter assembly rotates, thereby achieving a sealed connection between the circulation pipe and the flushing pipe, and forming the flushing pipeline and the circulation pipeline.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] The wastewater circulation filtration device provided in the above technical solution allows wastewater to pass through the inlet pipe, filter plate, and then into the filter tube, and finally into the impurity filtration unit for filtration. Furthermore, the impurity filtration unit is connected via a connecting pipe, enabling efficient treatment of wastewater with different types of contamination. During the flushing process, water flows through the flushing pipe, filter plate, and into the slurry pipe, flushing large particles into the slurry filtration unit, and then into the settling tank for sedimentation and collection, achieving self-cleaning of the system. During wastewater circulation filtration, wastewater enters the filter tube through the circulation pipe and then into the impurity filtration unit for filtration, achieving wastewater circulation filtration. In summary, this wastewater circulation filtration device integrates three functions: wastewater filtration, flushing pipes, and wastewater circulation filtration. It simplifies the connecting pipes, integrates multiple functions, and effectively controls the space occupied by the equipment. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the overall assembly of the wastewater circulation filtration device provided by the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the water inlet assembly provided by the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the filter assembly provided by the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the water outlet component provided by the present invention;

[0025] Figure 5 This is a schematic diagram showing the water flow direction during operation of the wastewater circulation filtration device provided by the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Inlet assembly; 11. Inlet pipe; 12. Slurry pipe; 121. Second valve; 13. Filter pipe; 131. First valve; 132. Telescopic pipe; 14. Filter plate; 2. Filter assembly; 21. Slurry filtration unit; 22. Impurity filtration unit; 221. Filter media; 222. Sixth valve; 23. Connecting pipe; 231. Seventh valve; 3. Outlet assembly; 31. Sedimentator; 32. Outlet pipe; 321. Fifth valve; 33. Circulation pipe; 331. Fourth valve; 34. Flushing pipe; 341. Third valve. Detailed Implementation

[0028] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] Please see Figures 1 to 5 The present invention provides a wastewater circulation filtration device, including an inlet component 1, a filter component 2 and an outlet component 3.

[0032] Specifically, the water inlet assembly 1 includes an inlet pipe 11, a slurry pipe 12, a filter pipe 13, and a filter plate 14. One end of the slurry pipe 12 is connected to the inlet pipe 11, and one end of the filter pipe 13 is connected to either the inlet pipe 11 or the slurry pipe 12. The filter plate 14 is disposed inside the filter pipe 13 and has filter holes with a diameter of 3.5 mm, which can filter larger particles of dirt in the wastewater. Since one end of the slurry pipe 12 is connected to the inlet pipe 11, one end of the filter pipe 13 is connected to either the inlet pipe 11 or the slurry pipe 12, and the filter plate 14 is disposed inside the filter pipe 13, the wastewater circulation filtration device has an inlet water path, a circulation water path, and a flushing water path, thereby integrating three different functions: filtration, circulation filtration, and pipe cleaning.

[0033] The filter assembly 2 includes a slurry filter unit 21, multiple impurity filter units 22, and multiple connecting pipes 23. Each impurity filter unit 22 is arranged in a circumferential pattern around the slurry filter unit 21. The slurry pipe 12 is connected to the slurry filter unit 21 by a threaded connection. The filter pipe 13 can communicate with four impurity filter units 22. The connecting pipe 23 connects two adjacent impurity filter units 22. Since each impurity filter unit 22 is arranged in a circumferential pattern around the slurry filter unit 21, and the slurry pipe 12 is connected to the slurry filter unit 21 by a threaded connection, and the filter pipe 13 can communicate with at least one impurity filter unit 22, the wastewater circulation filtration device can selectively filter impurity units 22 according to different impurities in the filtered water, thereby improving the wastewater treatment efficiency of the wastewater circulation filtration device.

[0034] The effluent assembly 3 includes a settling tank 31, an effluent pipe 32, a circulation pipe 33, and a flushing pipe 34. The settling tank 31 is connected to the slurry filtration unit 21 and each impurity filtration unit 22. One end of the effluent pipe 32 is connected to the settling tank 31, one end of the circulation pipe 33 is connected to the effluent pipe 32, and the other end of the circulation pipe 33 is connected to the inlet pipe 11. One end of the flushing pipe 34 is connected to the effluent pipe 32, and the other end of the flushing pipe 34 is connected to the filter pipe 13. Because one end of the effluent pipe 32 is connected to the settling tank 31, one end of the circulation pipe 33 is connected to the effluent pipe 32, and the other end of the circulation pipe 33 is connected to the inlet pipe 11, and one end of the flushing pipe 34 is connected to the effluent pipe 32, and the other end of the flushing pipe 34 is connected to the filter pipe 13, the wastewater circulation filtration device can discharge the filtered and qualified wastewater through the effluent pipe 32, and the unqualified wastewater enters the inlet assembly 1 through the circulation pipe 33 for further filtration.

[0035] The water inlet assembly 1 also includes a first valve 131, which is disposed on the filter pipe 13. The connection between the flushing pipe 34 and the filter pipe 13 is located downstream of the filter plate 14, and the connection between the flushing pipe 34 and the filter pipe 13 is located upstream of the first valve 131. Because the connection between the flushing pipe 34 and the filter pipe 13 is downstream of the filter plate 14, the wastewater circulation filtration device can use the filter plate 14 to pre-filter large particulate impurities in the water to be filtered during water injection, achieving better filtration results while preventing clogging of the impurity filtration unit 22. Because the connection between the flushing pipe 34 and the filter pipe 13 is upstream of the first valve 131, the flushing water flow during flushing of the wastewater circulation filtration device will carry large particulate impurities remaining on the filter plate 14 into the slurry filtration unit 21, keeping the filter plate 14 clean and enabling cleaning of the filter plate 14 without disassembling it.

[0036] The water inlet assembly 1 also includes a second valve 121, which is disposed on the slurry pipe 12. The filter pipe 13 communicates with the slurry pipe 12, and the second valve 121 is located below the connection point between the filter pipe 13 and the slurry pipe 12. Because the filter pipe 13 communicates with the slurry pipe 12, and the second valve 121 is located below the connection point, during filtration, the first valve 131 remains open, and the second valve 121 remains closed, preventing the water to be filtered from entering the slurry filtration unit 21. During flushing, the first valve 131 and the fifth valve 321 remain closed, while the second valve 121 and the third valve 341 remain open, preventing the flushing water from entering the impurity filtration unit 22.

[0037] The water outlet assembly 3 also includes a third valve 341, a fourth valve 331, and a fifth valve 321. The third valve 341 is disposed on the flushing pipe 34 and is located upstream of the filter plate 14; the fourth valve 331 is disposed on the circulation pipe 33; and the fifth valve 321 is disposed on the water outlet pipe 32 and is located downstream of the connection between the flushing pipe 34, the circulation pipe 33, and the water outlet pipe 32. Because the third valve 341 is located on the flushing pipe 34 and upstream of the filter plate 14; the fourth valve 331 is located on the circulation pipe 33; and the fifth valve 321 is located on the outlet pipe 32 and downstream of the connection between the flushing pipe 34, the circulation pipe 33 and the outlet pipe 32, the fifth valve 321, the third valve 341 and the second valve 121 remain closed and the fourth valve 331 and the first valve 131 remain open when the wastewater circulation filtration device is performing wastewater circulation filtration, thereby preventing the circulating filtration water from entering the flushing pipe 34 and the slurry filtration unit 21.

[0038] The water inlet assembly 1 also includes a telescopic pipe 132, which is telescopically connected to the filter pipe 13 and can be sealed in communication with at least one impurity filtration unit 22. Because the telescopic pipe 132 is telescopically connected to the filter pipe 13 and can be sealed in communication with at least one impurity filtration unit 22, the filtered water flows through the filter pipe 13 and the impurity filtration unit 22 in a sealed state.

[0039] In the vertical direction, the upper surfaces of each impurity filtration unit 22 are flush, and the lower surfaces of each impurity filtration unit 22 decrease sequentially along the circumference. Similarly, the height of each connecting pipe 23 decreases sequentially along the circumference. Because the upper surfaces of each impurity filtration unit 22 are flush vertically, and the lower surfaces of each impurity filtration unit 22 decrease sequentially along the circumference, and the height of each connecting pipe 23 decreases sequentially along the circumference, water can flow into the next impurity filtration unit 22 under the guidance of gravity and the connecting pipe 23. This interconnects the various impurity filtration units 22, achieving the filtration of different impurities in the wastewater.

[0040] The filter assembly 2 also includes four types of filter media 221: quartz sand, activated carbon, fiber bundles, and porous ceramics. Each filter media 221 is disposed within each impurity filtration unit 22, and filter media 221 is provided in at least two adjacent impurity filtration units 22 along the vertical direction. Because each filter media 221 is disposed within each impurity filtration unit 22, and filter media 221 is provided in at least two adjacent impurity filtration units 22 along the vertical direction, the impurity filtration unit 22 can be selected based on the impurities in the wastewater.

[0041] The filter assembly 2 also includes four sixth valves 222, each of which is disposed within each impurity filtration unit 22. Vertically, the sixth valve 222 is flush with or shorter than the lower connecting pipe 23. Because each sixth valve 222 is disposed within each impurity filtration unit 22, and vertically, is flush with or shorter than the lower connecting pipe 23, any impurity filtration unit 22 can be selected as the final outlet for wastewater.

[0042] The filter assembly 2 also includes four seventh valves 231, each of which is disposed within a connecting pipe 23. Because the filter assembly 2 includes four seventh valves 231, each of which is disposed within a connecting pipe 23, the impurity filtration unit 22 can selectively open or close the seventh valves 231, thereby enabling selective activation of the impurity filtration unit 22 for wastewater filtration.

[0043] The flushing pipe 34 and the circulation pipe 33 are flexible pipes. Because the flushing pipe 34 and the circulation pipe 33 are flexible pipes, the angle and position of the flushing pipe 34 and the circulation pipe 33 can be adjusted according to the position determined after the filter assembly 2 is rotated, thereby realizing the sealed connection of the circulation pipe 33 and the flushing pipe 34 and the formation of the flushing water path and the circulation water path.

[0044] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A wastewater circulation filtration device, characterized in that, include: The water inlet assembly (1) includes a water inlet pipe (11), a slurry pipe (12), a filter pipe (13), and a filter plate (14). One end of the slurry pipe (12) is connected to the water inlet pipe (11), and one end of the filter pipe (13) is connected to either the water inlet pipe (11) or the slurry pipe (12). The filter plate (14) is disposed inside the filter pipe (13). The filter assembly (2) includes a slurry filter unit (21), multiple impurity filter units (22), and multiple connecting pipes (23). Each of the impurity filter units (22) is arranged in a circular pattern with the slurry filter unit (21) as the center. The slurry pipe (12) is rotatably connected to the slurry filter unit (21). The filter pipe (13) can communicate with at least one of the impurity filter units (22). The connecting pipe (23) connects two adjacent impurity filter units (22). The water outlet assembly (3) includes a sedimentation tank (31), an outlet pipe (32), a circulation pipe (33), and a flushing pipe (34). The sedimentation tank (31) is connected to the slurry filtration unit (21) and each of the impurity filtration units (22). One end of the outlet pipe (32) is connected to the sedimentation tank (31). One end of the circulation pipe (33) is connected to the outlet pipe (32), and the other end of the circulation pipe (33) is connected to the inlet pipe (11). One end of the flushing pipe (34) is connected to the outlet pipe (32), and the other end of the flushing pipe (34) is connected to the filter pipe (13). The water inlet assembly (1) further includes a first valve (131), which is disposed on the filter tube (13). The connection between the flushing pipe (34) and the filter tube (13) is located downstream of the filter plate (14), and the connection between the flushing pipe (34) and the filter tube (13) is located upstream of the first valve (131). The water inlet assembly (1) further includes a second valve (121), which is disposed on the slurry pipe (12); the filter pipe (13) is connected to the slurry pipe (12), and the second valve (121) is located on the lower side of the connection between the filter pipe (13) and the slurry pipe (12); The water outlet assembly (3) further includes a third valve (341), a fourth valve (331), and a fifth valve (321). The third valve (341) is disposed on the flushing pipe (34) and is located upstream of the filter plate (14). The fourth valve (331) is disposed on the circulation pipe (33). The fifth valve (321) is disposed on the water outlet pipe (32) and is located downstream of the connection between the flushing pipe (34), the circulation pipe (33), and the water outlet pipe (32).

2. The wastewater circulation filtration device according to claim 1, characterized in that, The water inlet assembly (1) also includes a telescopic pipe (132), which is telescopically connected to the filter pipe (13), and the telescopic pipe (132) is capable of being sealed and connected to at least one of the impurity filter units (22).

3. The wastewater circulation filtration device according to claim 1, characterized in that, In the vertical direction, the upper side of each of the impurity filtering units (22) is flush, the lower side of each of the impurity filtering units (22) decreases sequentially in the circumferential direction, and the height of each of the connecting pipes (23) decreases sequentially in the circumferential direction.

4. The wastewater circulation filtration device according to claim 3, characterized in that, The filter assembly (2) further includes a variety of filter media (221), each of which is disposed in each of the impurity filtration units (22), and the filter media (221) is disposed in at least two adjacent impurity filtration units (22) between the vertical direction.

5. The wastewater circulation filtration device according to claim 3, characterized in that, The filter assembly (2) also includes a plurality of sixth valves (222), each of which is disposed in each of the impurity filter units (22). In the vertical direction, the sixth valve (222) is flush with the lower connecting pipe (23), or the height of the sixth valve (222) is less than that of the lower connecting pipe (23).

6. The wastewater circulation filtration device according to claim 3, characterized in that, The filter assembly (2) also includes a plurality of seventh valves (231), each of which is disposed in the connecting pipe (23).

7. The wastewater circulation filtration device according to claim 1, characterized in that, The flushing pipe (34) and the circulation pipe (33) are flexible pipes.

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