A sewage filtering assembly and a sewage filtering device

Abstract

This application provides a wastewater filtration assembly and a wastewater filtration device. The wastewater filtration assembly includes a cylinder, multiple rollers, and a first scraper. The multiple rollers rotate under the drive of a power module. A first sludge filtration space is formed between the peripheral sidewall of each roller and the inner sidewall of the cylinder, and a second sludge filtration space is formed between the peripheral sidewalls of two adjacent rollers. The first sludge filtration space, each of the second sludge filtration spaces, and the sludge feed channel are connected within the cylinder. The first scraper is rotatably connected to the cylinder. The peripheral sidewall of the first scraper is provided with multiple scraping sections, which rotate with the rotation of the first scraper and act on the peripheral sidewall of each roller to scrape off the sludge on the peripheral sidewall of the roller. This arrangement of multiple rollers increases the filtration area while ensuring the effective scraping of the peripheral sidewalls of the rollers by the first scraper, thereby improving the filtration efficiency of the wastewater filtration assembly.

Description

Technical Field

[0001] This invention relates to the technical field of wastewater filtration devices, and more particularly to a wastewater filtration component and a wastewater filtration device. Background Technology

[0002] With the development of technology, wastewater filtration devices are applied in industry. These devices perform processes such as concentration, conditioning, dewatering, stabilization, drying, or incineration of sludge to reduce volume, stabilize, and render it harmless. Wastewater filtration components are part of these devices. In existing technologies, wastewater filtration components consist of a cylinder and a drum, with the drum rotatably connected to the cylinder. However, there is only one drum, and sludge scraping is not possible, resulting in low filtration efficiency in current wastewater filtration devices. Summary of the Invention

[0003] The present invention aims to provide a wastewater filtration component and a wastewater filtration device. The cylindrical body is provided with a sludge feeding channel for connecting to an external sludge input pipe. Multiple rollers are built into the cylindrical body, and a power module connects the rollers, which are in a linked state under the drive of the power module, causing the rollers to rotate. A first sludge filtration space is formed between the peripheral sidewall of each roller and the inner sidewall of the cylindrical body, and a second sludge filtration space is formed between the peripheral sidewalls of two adjacent rollers. The first sludge filtration space, each of the second sludge filtration spaces, and the sludge feeding channel are located within the cylindrical body. The components are in a connected state; multiple rollers are arranged in a square array or a ring array; a first scraper is rotatably connected to the cylinder and located at the center of the space enclosed by the multiple rollers; the peripheral wall of the first scraper is provided with multiple scraping parts, which rotate with the rotation of the first scraper and act on the peripheral wall of each roller to scrape off the sludge on the peripheral wall of the roller, so as to increase the filtration area by arranging multiple rollers and avoid having only one roller. At the same time, it ensures the scraping effect of the first scraper on the peripheral wall of multiple rollers and improves the filtration efficiency of the sewage filtration assembly.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a wastewater filtration assembly, applied in a wastewater filtration device, the wastewater filtration assembly comprising:

[0005] The cylinder body is equipped with a sludge feeding channel; the sludge feeding channel is used to connect to an external sludge input pipe;

[0006] Multiple rollers are built into the cylinder body, and a power module is connected between the multiple rollers, which are in a linked state under the drive of the power module. The multiple rollers rotate under the drive of the power module. A first sludge filtration space is formed between the peripheral sidewall of each roller and the inner sidewall of the cylinder body, and a second sludge filtration space is formed between the peripheral sidewalls of two adjacent rollers. The first sludge filtration space, each of the second sludge filtration spaces, and the sludge feed channel are connected in the cylinder body. The multiple rollers are arranged in a square array or a ring array.

[0007] The first scraper is rotatably connected to the cylinder and is located at the center of the space enclosed by the plurality of rollers. The peripheral wall of the first scraper is provided with a plurality of scraping parts, which rotate with the rotation of the first scraper and act on the peripheral wall of each roller respectively to scrape off the sludge on the peripheral wall of the roller.

[0008] Optionally, the power module includes a power motor and a transmission module, wherein the power motor is installed on the cylinder and located on the outside of the cylinder;

[0009] One end of the transmission module is connected to the output end of the power motor, and the other end of the transmission module is connected to the multiple rollers and the first scraper, driving the multiple rollers and the first scraper to rotate synchronously.

[0010] Optionally, the bottom of each of the rollers is rotatably connected to the cylinder body; and the top of each of the rollers is connected to a first sprocket.

[0011] The bottom of the first scraper is rotatably connected to the cylinder; the top of the first scraper is connected to a second sprocket; the second sprocket and each of the first sprockets are at the same horizontal position;

[0012] The transmission module is a sprocket and chain drive module, which is equipped with a chain. The chain connects the second sprocket and each of the first sprockets at the same horizontal position, and drives the multiple rollers and the first scraper to rotate synchronously.

[0013] Optionally, the first scraper may further include a scraper body, which is connected to a plurality of scraper parts. The plurality of scraper parts are arranged sequentially along the circumferential direction of the scraper body and act sequentially on the peripheral sidewall of each roller.

[0014] The sludge scraper body is rotatably connected to the cylinder, and the bottom of the sludge scraper body is connected to the cylinder via a rotating bearing.

[0015] Optionally, the cylinder includes a main body and a top cover;

[0016] The top cover is connected to the main body of the cylinder and supports the power motor;

[0017] The main body of the cylinder is provided with a sludge receiving space, which is connected to the sludge feeding channel. Multiple rollers and the first scraper are all located in the sludge receiving space and filter the sludge input through the sludge feeding channel.

[0018] The plurality of rollers and the first scraper are all connected to the same cylinder body;

[0019] Each of the rollers is located within the sludge receiving space and rotates along its own axis under the drive of the power module; the rollers, in the rotating state, drive the sludge input through the sludge feeding channel to rotate in the sludge receiving space and perform rotary separation of the sludge.

[0020] Optionally, each of the rollers has a plurality of water passage holes on its peripheral sidewall, which are arranged in a ring along the peripheral sidewall of the roller; the water passage holes are for water separated from sludge to pass through, but not for sludge to pass through.

[0021] Optionally, the drum is provided with a water passage space, which connects to multiple water passage holes in different directions and can be connected to external water pipes; the water passage space is arranged in a ring.

[0022] Optionally, the wastewater filtration assembly further includes a second sludge scraper;

[0023] The inner wall of the cylinder body is provided with an installation groove, which faces the first sludge filtration space; the installation groove is used for the installation of the second sludge scraper.

[0024] Optionally, the second scraper is provided with a mounting part and a scraper arm, wherein the mounting part is installed in the mounting groove;

[0025] The sludge scraper arm is connected to the mounting part and extends toward the first sludge filtration space; the sludge scraper arm is located within the first sludge filtration space; the sludge scraper arm elastically contacts the peripheral sidewall of each of the rollers.

[0026] To achieve the above objectives, the present invention provides the following technical solution: a wastewater filtration device, comprising the aforementioned wastewater filtration component.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] This invention provides a wastewater filtration assembly and a wastewater filtration device. The cylindrical body is equipped with a sludge feeding channel for connecting to an external sludge input pipe. Multiple rollers are built into the cylindrical body, and a power module connects these rollers, which are in a linked state under the drive of the power module, causing the rollers to rotate. A first sludge filtration space is formed between the peripheral wall of each roller and the inner wall of the cylindrical body, and a second sludge filtration space is formed between the peripheral walls of two adjacent rollers. The first sludge filtration space, each of the second sludge filtration spaces, and the sludge feeding channel are located within the cylindrical body. The system is in a connected state; multiple rollers are arranged in a square array or a ring array; a first scraper is rotatably connected to the cylinder and located at the center of the space enclosed by the multiple rollers; the peripheral wall of the first scraper is provided with multiple scraping parts, which rotate with the rotation of the first scraper and act on the peripheral wall of each roller to scrape off the sludge on the peripheral wall of the roller, so as to increase the filtration area by arranging multiple rollers and avoid having only one roller. At the same time, it ensures the scraping effect of the first scraper on the peripheral wall of multiple rollers and improves the filtration efficiency of the sewage filtration assembly. Attached Figure Description

[0029] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0030] Figure 1 A schematic diagram of a wastewater filtration assembly according to an embodiment of this application is shown.

[0031] Figure 2 A cross-sectional view of a wastewater filtration assembly according to an embodiment of this application is shown.

[0032] Figure 3 A top view of a wastewater filtration assembly according to an embodiment of this application is shown.

[0033] Figure 4 A bottom view of a wastewater filtration assembly according to an embodiment of this application is shown.

[0034] Figure 5 A partial schematic diagram of a wastewater filtration assembly according to an embodiment of this application is shown.

[0035] Attached Figure

[0036] 100. Wastewater filtration components;

[0037] 10. Cylinder body; 11. Sludge feed channel; 12. Main body of cylinder; 12a. Sludge receiving space; 12b. Installation groove; 13. Top cover;

[0038] 20. Drum; 20a. Water passage hole; 20b. Water passage space; 21. First sludge filtration space; 22. Second sludge filtration space; 23. First sprocket;

[0039] 30. First scraper component; 31. Scraper section; 32. Second sprocket; 33. Scraper body;

[0040] 40. Power module; 41. Power motor; 42. Transmission module; 421. Chain;

[0041] 50. Second scraper component; 51. Installation part; 52. Scraper arm. Detailed Implementation

[0042] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0043] Please refer to the attached document. Figures 1-5 This application provides a wastewater filtration component 100, which is applied to a wastewater filtration device and is used to filter sludge.

[0044] Please refer to the attached document. Figures 1-5 In this embodiment of the application, the wastewater filtration assembly 100 includes a cylinder 10, multiple rollers 20 and a first sludge scraper 30. The cylinder 10 is provided with a sludge feeding channel 11. The sludge feeding channel 11 is used to connect to an external sludge input pipe. The multiple rollers 20 are built into the cylinder 10, and a power module 40 is connected between the multiple rollers 20. The multiple rollers 20 are in a linked state under the drive of the power module 40 and rotate under the drive of the power module 40.

[0045] A first sludge filtration space 21 is formed between the peripheral sidewall of each roller 20 and the inner sidewall of the cylinder 10, and a second sludge filtration space 22 is formed between the peripheral sidewalls of two adjacent rollers 20. The first sludge filtration space 21, each second sludge filtration space 22, and the sludge feed channel 11 are connected within the cylinder 10. The multiple rollers 20 are arranged in a square array or a ring array. A first scraper 30 is rotatably connected to the cylinder 10 and is located at the center of the space enclosed by the multiple rollers 20. The peripheral sidewall of the first scraper 30 is provided with multiple scraping parts 31. The multiple scraping parts 31 rotate with the rotation of the first scraper 30 and act on the peripheral sidewall of each roller 20 to scrape off the sludge on the peripheral sidewall of the roller 20. This arrangement of multiple rollers 20 increases the filtration area and avoids the use of only one roller 20. At the same time, it ensures the scraping effect of the first scraper 30 on the peripheral sidewall of the multiple rollers 20, thereby improving the filtration efficiency of the wastewater filtration assembly 100.

[0046] Please refer to the attached document. Figures 1-5 In this embodiment of the application, the cylinder 10 is provided with a sludge feeding channel 11; the sludge feeding channel 11 is used to connect to an external sludge input pipe; so that the sludge output from the external sludge input pipe can enter the cylinder 10 through the sludge feeding channel 11, thereby facilitating the storage of sludge by the cylinder 10.

[0047] Multiple rollers 20 are built into the cylinder 10. A power module 40 connects the multiple rollers 20, and they are in a linked state under the drive of the power module 40. The multiple rollers 20 rotate under the drive of the power module 40 to adjust their position relative to the cylinder 10. A first sludge filtration space 21 is formed between the peripheral wall of each roller 20 and the inner wall of the cylinder 10. A second sludge filtration space 22 is formed between the peripheral walls of two adjacent rollers 20. The first sludge filtration space 21, each second sludge filtration space 22, and the sludge feed channel 11 are connected within the cylinder 10. The multiple rollers 20 are arranged in a square array or a ring array to facilitate the flow of sludge from the sludge feed channel 11 to the first sludge filtration space 21 and each second sludge filtration space 22.

[0048] The first scraper 30 is rotatably connected to the cylinder 10 and is located at the center of the space enclosed by multiple rollers 20, so as to facilitate the adjustment of the position of the first scraper 30 relative to the cylinder 10. The peripheral wall of the first scraper 30 is provided with multiple scraping parts 31. The multiple scraping parts 31 rotate with the rotation of the first scraper 30 and act on the peripheral wall of each roller 20 to scrape off the sludge on the peripheral wall of the roller 20. This arrangement of multiple rollers 20 increases the filtration area and avoids the use of only one roller 20. At the same time, it ensures the scraping effect of the first scraper 30 on the peripheral walls of multiple rollers 20 and improves the filtration efficiency of the sewage filtration assembly 100.

[0049] Please refer to the attached document. Figures 1-3 In this embodiment, the power module 40 includes a power motor 41 and a transmission module 42. The power motor 41 is installed on the cylinder 10 and located on the outside of the cylinder 10 so that the power motor 41 can be fixed on the outside of the cylinder 10. One end of the transmission module 42 is connected to the output end of the power motor 41, and the other end of the transmission module 42 is connected to multiple rollers 20 and the first scraper 30, and drives the multiple rollers 20 and the first scraper 30 to rotate synchronously, so that the power output by the power motor 41 can be transmitted to the multiple rollers 20 and the first scraper 30 through the transmission module 42. This facilitates the multiple rollers 20 and the first scraper 30 to automatically rotate relative to the cylinder 10 through the cooperation of the power motor 41 and the transmission module 42, so that the multiple rollers 20 and the first scraper 30 can filter the sludge of the cylinder 10 during the rotation.

[0050] Please refer to the attached document. Figures 1-4 In this embodiment, the bottom of each roller 20 is rotatably connected to the cylinder 10; the top of each roller 20 is connected to a first sprocket 23; the bottom of the first scraper 30 is rotatably connected to the cylinder 10; the top of the first scraper 30 is connected to a second sprocket 32; the second sprocket 32 ​​and each first sprocket 23 are at the same horizontal position. The transmission module 42 is a sprocket and chain transmission module, which is provided with a chain 421; the chain 421 is connected to the second sprocket 32 ​​and each first sprocket 23 at the same horizontal position, and drives the multiple rollers 20 and the first scraper 30 to rotate synchronously, so that the first sprocket 23, the second sprocket 32 ​​and the chain 421 cooperate to realize the synchronous rotation of the multiple rollers 20 and the first scraper 30.

[0051] Please refer to the attached document. Figures 1-4In this embodiment, the first scraper 30 further includes a scraper body 33, which is connected to a plurality of scraper parts 31. The plurality of scraper parts 31 are arranged sequentially along the annular direction of the scraper body 33 and act sequentially on the peripheral sidewalls of each roller 20, so that the plurality of scraper parts 31 can scrape the sludge from the peripheral sidewalls of each roller 20 respectively. The scraper body 33 is rotatably connected to the cylinder 10, and the bottom of the scraper body 33 is connected to the cylinder 10 through a rotating bearing, so that the first scraper 30 can rotate relative to the cylinder 10 through the scraper body 33, thereby facilitating the adjustment of the position of the first scraper 30 relative to the cylinder 10.

[0052] Please refer to the attached document. Figures 1-2 In this embodiment of the application, the cylinder 10 includes a cylinder body 12 and a top cover 13; the top cover 13 is connected to the cylinder body 12 and supports the power motor 41; so that the cylinder 10 can support the power motor 41 through the top cover 13, thereby facilitating the fixing of the power motor 41 to the outside of the top cover 13.

[0053] The main body 12 of the cylinder is provided with a sludge receiving space 12a, which serves as the internal space of the main body 12 of the cylinder. The sludge receiving space 12a is connected to the sludge feeding channel 11 so that the sludge in the sludge feeding channel 11 can flow into the sludge receiving space 12a. Multiple rollers 20 and the first scraper 30 are all located in the sludge receiving space 12a and filter the sludge input through the sludge feeding channel 11, thereby improving the filtration efficiency of the wastewater filtration assembly 100.

[0054] Multiple rollers 20 and the first scraper 30 are all connected to the same cylinder body 12; each roller 20 is located in the sludge receiving space 12a, making full use of the internal space of the cylinder body 12. Each roller 20 rotates along its own axis under the drive of the power module 40; when the rollers 20 are rotating, they drive the sludge input through the sludge feeding channel 11 to rotate in the sludge receiving space 12a and perform rotary separation of the sludge, so that each roller 20 can filter the sludge at the same time, thereby improving the sludge filtration efficiency of the wastewater filtration assembly 100.

[0055] Please refer to the attached document. Figures 1-4 In this embodiment, each roller 20 has a plurality of water passage holes 20a on its peripheral sidewall. The plurality of water passage holes 20a are arranged in a ring along the peripheral sidewall of the roller 20. The water passage holes 20a are used for water separated from sludge to pass through, but not for sludge to pass through, so that the water separated from sludge can enter the inner sidewall of the roller 20 through the water passage holes 20a, thereby facilitating the separation of water and sludge. The arrangement of multiple water passage holes 20a increases the flow efficiency of water.

[0056] Please refer to the attached document. Figures 1-4In this embodiment, the drum 20 is provided with a water passage space 20b, which is connected to multiple water passage holes 20a in different directions, so that the water separated from the sludge in the sludge receiving space 12a can flow to the water passage space 20b through the multiple water passage holes 20a, thereby facilitating the storage of the separated water in the water passage space 20b. The water passage space 20b can be connected to an external water pipe. The water passage space 20b is arranged in a ring shape so that the water in the water passage space 20b can be discharged to the external environment through the external water pipe, thereby achieving the water discharge effect of the water passage space 20b.

[0057] Please refer to the attached document. Figures 1-5 In this embodiment, the wastewater filtration assembly 100 further includes a second sludge scraper 50; the inner sidewall of the cylindrical body 12 is provided with an installation groove 12b, which faces the first sludge filtration space 21; the installation groove 12b is used for the installation of the second sludge scraper 50, so that the second sludge scraper 50 can be fixed to the inner sidewall of the cylindrical body 12 through the installation groove 12b, thereby facilitating the extension of the second sludge scraper 50 to the first sludge filtration space 21 through the installation groove 12b.

[0058] Please refer to the attached document. Figures 1-5 In this embodiment, the second scraper 50 is provided with a mounting part 51 and a scraper arm 52. The mounting part 51 is mounted in the mounting groove 12b so that the second scraper 50 can be connected to the mounting groove 12b through the mounting part 51. The scraper arm 52 is connected to the mounting part 51 and extends toward the first sludge filtration space 21. The scraper arm 52 is located in the first sludge filtration space 21. The scraper arm 52 elastically contacts the peripheral walls of each roller 20 so that the scraper arm 52 can scrape the sludge on the peripheral walls of the roller 20, thereby facilitating the simultaneous scraping of sludge by the first scraper 30 and the second scraper 50 on the peripheral walls of the roller 20, improving the sludge scraping efficiency.

[0059] In the second application embodiment, a sewage filtration device includes a sewage filtration component 100. The sewage filtration component 100 is part of the sewage filtration device, which performs processes such as concentration, conditioning, dewatering, stabilization, drying or incineration of sludge to reduce volume, stabilize and render it harmless.

[0060] Compared with the prior art, the beneficial effects of the present invention are:

[0061] This invention provides a wastewater filtration assembly 100 and a wastewater filtration device. A cylindrical body 10 is provided with a sludge feeding channel 11; the sludge feeding channel 11 is used to connect to an external sludge input pipe; multiple rollers 20 are built into the cylindrical body 10, and a power module 40 is connected between the multiple rollers 20, and they are in a linked state under the drive of the power module 40, rotating under the drive of the power module 40; a first sludge filtration space 21 is formed between the peripheral sidewall of each roller 20 and the inner sidewall of the cylindrical body 10, and a second sludge filtration space 22 is formed between the peripheral sidewalls of two adjacent rollers 20. The first sludge filtration space 21, each second sludge filtration space 22, and the sludge feeding channel 11 are located within the cylindrical body. The cylinder 10 is in a connected state; multiple rollers 20 are arranged in a square array or a ring array; the first scraper 30 is rotatably connected to the cylinder 10 and is located at the center of the space enclosed by the multiple rollers 20; the peripheral wall of the first scraper 30 is provided with multiple scraping parts 31, which rotate with the rotation of the first scraper 30 and act on the peripheral wall of each roller 20 to scrape off the sludge on the peripheral wall of the roller 20. This is to increase the filtration area by arranging multiple rollers 20, avoiding the use of only one roller 20. At the same time, it ensures the scraping effect of the first scraper 30 on the peripheral wall of the multiple rollers 20 and improves the filtration efficiency of the sewage filtration assembly 100.

[0062] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A sewage filter assembly characterized by, The wastewater filtration assembly is used in a wastewater filtration device and includes: The cylinder body is equipped with a sludge feeding channel; the sludge feeding channel is used to connect to an external sludge input pipe; Multiple rollers are built into the cylinder body, and a power module is connected between the multiple rollers, which are in a linked state under the drive of the power module. The multiple rollers rotate under the drive of the power module. A first sludge filtration space is formed between the peripheral sidewall of each roller and the inner sidewall of the cylinder body, and a second sludge filtration space is formed between the peripheral sidewalls of two adjacent rollers. The first sludge filtration space, each of the second sludge filtration spaces, and the sludge feed channel are connected in the cylinder body. The multiple rollers are arranged in a square array or a ring array. The first scraper is rotatably connected to the cylinder and is located at the center of the space enclosed by the plurality of rollers. The peripheral wall of the first scraper is provided with a plurality of scraping parts, which rotate with the rotation of the first scraper and act on the peripheral wall of each roller respectively to scrape off the sludge on the peripheral wall of the roller.

2. The sewage filter assembly of claim 1, wherein, The power module includes a power motor and a transmission module. The power motor is installed on the cylinder and is located on the outside of the cylinder. One end of the transmission module is connected to the output end of the power motor, and the other end of the transmission module is connected to the multiple rollers and the first scraper, driving the multiple rollers and the first scraper to rotate synchronously.

3. The sewage filter assembly of claim 2, wherein, The bottom of each roller is rotatably connected to the cylinder body; a first sprocket is connected to the top of each roller; The bottom of the first scraper is rotatably connected to the cylinder; the top of the first scraper is connected to a second sprocket; the second sprocket and each of the first sprockets are at the same horizontal position; The transmission module is a sprocket and chain drive module, which is equipped with a chain. The chain connects the second sprocket and each of the first sprockets at the same horizontal position, and drives the multiple rollers and the first scraper to rotate synchronously.

4. The sewage filter assembly of claim 3, wherein, The first scraper also includes a scraper body, which is connected to a plurality of scraper parts. The plurality of scraper parts are arranged sequentially along the circumferential direction of the scraper body and act sequentially on the peripheral sidewall of each roller. The sludge scraper body is rotatably connected to the cylinder, and the bottom of the sludge scraper body is connected to the cylinder via a rotating bearing.

5. The sewage filter assembly of claim 2, wherein, The cylinder includes a main body and a top cover; The top cover is connected to the main body of the cylinder and supports the power motor; The main body of the cylinder is provided with a sludge receiving space, which is connected to the sludge feeding channel. The multiple rollers and the first scraper are all located in the sludge receiving space and filter the sludge input through the sludge feeding channel. The plurality of rollers and the first scraper are all connected to the same cylinder body; Each of the rollers is located within the sludge receiving space and rotates along its own axis under the drive of the power module; the rollers, in the rotating state, drive the sludge input through the sludge feeding channel to rotate in the sludge receiving space and perform rotary separation of the sludge.

6. The sewage filter assembly of claim 5, wherein, Each of the rollers has a plurality of water passage holes on its peripheral sidewall, which are arranged in a ring along the peripheral sidewall of the roller; the water passage holes are for water separated from sludge to pass through, but not for sludge to pass through.

7. The sewage filter assembly of claim 6, wherein, The drum is provided with a water passage space, which connects to multiple water passage holes in different directions and can be connected to external water pipes; the water passage space is arranged in a ring.

8. The sewage filter assembly of claim 6, wherein, The wastewater filtration assembly also includes a second sludge scraper; The inner wall of the cylinder body is provided with an installation groove, which faces the first sludge filtration space; the installation groove is used for the installation of the second sludge scraper.

9. The sewage filter assembly of claim 8, wherein, The second sludge scraper is provided with a mounting part and a sludge scraping arm, and the mounting part is installed in the mounting groove; The sludge scraper arm is connected to the mounting part and extends toward the first sludge filtration space; the sludge scraper arm is located within the first sludge filtration space; the sludge scraper arm elastically contacts the peripheral sidewall of each of the rollers.

10. A sewage filtering device, characterized by Includes the wastewater filtration assembly as described in any one of claims 1 to 9.

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