Sewage treatment equipment facilitating sludge cleaning

Abstract

The present application relates to sewage treatment technical field, and disclose a kind of sewage treatment equipment facilitating bottom mud cleaning, including adjusting pool, mud scraping mechanism, suction mechanism and traction mechanism are equipped in the adjusting pool, the mud scraping mechanism is located at the bottom of the adjusting pool, and the mud scraping mechanism includes mud scraping seat, mud scraping plate is equipped at both ends of the mud scraping seat, the traction mechanism includes drive motor and winding roller, the drive motor is fixedly connected with the adjusting pool, and the output shaft of the drive motor is fixedly connected with the winding roller.The present application is processed by setting mud scraping mechanism to the sludge in the adjusting pool with groove, mud scraping mechanism is pulled by traction mechanism and walks, without completely emptying the whole equipment, in the case of water, the sludge in the bottom of pool can also be processed, the continuous operation of sewage treatment is less affected, by mud scraping plate and mud scraping seat, sludge hardening or scaling part can be effectively processed, and the effect of mud is better.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a wastewater treatment device that facilitates the removal of bottom sludge. Background Technology

[0002] Conventional wastewater treatment equipment mainly consists of equalization tanks, anoxic tanks, anaerobic tanks, aerobic tanks, sedimentation tanks, and disinfection tanks. Most of these, including the initial sedimentation stage, produce bottom sludge, while the final disinfection tank generally does not accumulate sludge. The equalization tank is particularly prone to sludge accumulation because it serves as a buffer to prevent the subsequent biological treatment and sedimentation tanks from overloading and collapsing. After entering the equalization tank, the wastewater flow slows down, allowing suspended solids, silt, and other impurities to settle naturally. The sludge is primarily composed of original coarse bottom sludge containing a large amount of sand and gravel, making it prone to compaction and scaling.

[0003] There are three main methods for removing bottom sludge from equalization tanks in the existing technology: 1. Gravity discharge: a sludge hopper is installed at the bottom of the tank, and the sludge discharge valve is opened periodically to use the static pressure of the tank water to discharge the thick sludge at the bottom by gravity; 2. A sludge pump or a mobile sludge pump is installed at the bottom of the tank to directly suck up the deposited bottom sludge and mixed sewage; 3. When the sludge is too thick, severely compacted, or has a lot of sand and gravel, it is cleaned manually with shovels, and small tools are used to clean up the dead corner sediment and large pieces of debris.

[0004] Gravity-driven sludge removal is simple to operate and requires minimal daily maintenance. However, it is not thorough, only removing surface sludge. It also relies on the water level and pressure of the tank, and cannot remove sludge at low water levels, which is a significant limitation. While sludge pumps are highly efficient at removing sludge, they are less effective at treating areas with scale or compaction. Manual sludge removal is the most effective method, but it is severely limited by the available space and is not suitable for small-volume wastewater treatment equipment. Furthermore, it requires the water to be shut off and the equipment emptied, and toxic gases must be completely released before operation can begin, which significantly impacts the continuous operation of wastewater treatment. Summary of the Invention

[0005] This invention provides a wastewater treatment device that facilitates bottom sludge removal, which has the advantages of being less restricted by the environment and having a good sludge removal effect, thus solving the problems mentioned in the background art of poor sludge removal effect and many restrictions on site and environment of existing sludge removal equipment.

[0006] The present invention provides the following technical solution: a sewage treatment device for easy bottom sludge cleaning, comprising an equalization tank, wherein the equalization tank is provided with a sludge scraping mechanism, a sludge suction mechanism and a traction mechanism, the sludge scraping mechanism is located at the bottom of the equalization tank and includes a sludge scraping seat, both ends of the sludge scraping seat are provided with scraper blades, the traction mechanism includes a drive motor and a winding roller, the drive motor is fixedly connected to the equalization tank and the output shaft of the drive motor is fixedly connected to the winding roller, the winding roller is provided with a steel wire rope and one end of the steel wire rope is fixedly connected to the sludge scraping seat; One end of the regulating tank is provided with a groove, the cross-section of the groove is trapezoidal, and the bottom surface of the groove is lower than the bottom surface of the regulating tank. The sludge suction mechanism includes a sludge suction pipe and a filter cover. The filter cover is located at the bottom of the groove, and one end of the sludge suction pipe is inserted into the filter cover.

[0007] As an optional solution of the sewage treatment equipment for easy bottom sludge cleaning described in this invention, the filter cover is square in shape, and first filter holes are provided on both sides of the filter cover. The front end of the filter cover is provided with a filter screen, which is disc-shaped and protrudes from the filter cover.

[0008] As an optional solution of the sewage treatment equipment for easy bottom sludge cleaning described in this invention, the groove is further provided with a support, and the support is L-shaped. A sealing plate is provided on the support, and the support is elastically connected to the regulating tank through a first spring. The position of the sealing plate is opposite to the filter screen.

[0009] As an optional solution of the sewage treatment equipment for easy bottom sludge cleaning described in this invention, the filter cover is provided with a cleaning mechanism for cleaning the outer end face of the filter screen, and the cleaning mechanism includes a scraper and a motor. The scraper is located outside the filter screen, the motor is fixedly connected to the filter cover, and the output shaft of the motor is fixedly connected to the scraper.

[0010] As an optional solution of the sewage treatment equipment for easy bottom sludge cleaning described in this invention, wherein: both ends of the sealing plate are provided with rotating shafts, and one end of the rotating shaft is rotatably connected to the bracket, and the sealing plate and the bracket are elastically connected by a torsion spring; The sealing plate has a notch that matches the scraper, and the filter screen has a sealed dwell area that matches the shape of the scraper.

[0011] As an optional solution of the sewage treatment equipment for easy bottom sludge cleaning described in this invention, the sludge scraper seat is elastically connected to the regulating tank by a tension spring, and when the sludge scraper seat moves toward the filter cover, it can push the support to move until the sealing plate and the filter screen are tightly fitted.

[0012] As an optional solution of the sewage treatment equipment for easy bottom sludge cleaning described in this invention, the bottom of the filter cover is provided with a collection box, and the collection box and the filter cover are separated by a partition.

[0013] As an optional solution of the sewage treatment equipment for easy bottom sludge cleaning described in this invention, the sludge suction pipe is provided with a filter section, and the filter section is provided with a plurality of second filter holes. One end of the sludge suction pipe with the filter section passes through the partition and is inserted into the collection box. The partition is provided with a plurality of openings.

[0014] As an optional solution of the sewage treatment equipment for easy bottom sludge cleaning described in this invention, the front of the scraper is arc-shaped, and the scraper is provided with a number of convex ribs, which are triangular in shape.

[0015] The present invention has the following beneficial effects: 1. This wastewater treatment equipment facilitates bottom sludge cleaning. It uses a sludge scraping mechanism to treat the sludge in the grooved regulating tank. The scraping mechanism is pulled by a traction mechanism, so there is no need to completely empty the entire equipment. It can treat the sludge at the bottom of the tank even when there is water, which has little impact on the continuous operation of wastewater treatment. The scraper and scraper seat can effectively treat the sludge that has hardened or scaled up, resulting in better sludge removal.

[0016] 2. This wastewater treatment equipment, which facilitates bottom sludge cleaning, can filter sand and gravel in sludge by setting up a filter cover. The front and sides of the filter cover are provided with channels for sludge flow, which can quickly process the sludge accumulated at the front and sides of the filter cover. By setting a movable sealing plate on the front side of the filter cover, when the sludge scraper moves to a certain position, it will push the sealing plate to fit tightly with the filter screen, thereby achieving the effect of sealing the filter screen. This can effectively solve the problem of empty suction at the front of the filter cover in the later stage of sludge suction, which is caused by the sludge being processed in advance.

[0017] 3. This wastewater treatment equipment, which facilitates bottom sludge cleaning, allows for further sludge filtration by installing a second filter hole on the sludge suction pipe. A collection box is installed at the bottom of the filter cover, separated from the filter cover by a partition. One end of the sludge suction pipe passes through the partition, which has several openings. When the sludge suction pipe is working, the filtered sand and gravel are adsorbed onto the outer surface of the pipe. When the pipe stops working, the sand and gravel fall due to their own weight. Because of the openings on the partition, some of the sand and gravel will fall to the lower side of the partition. When the pipe resumes operation, the filter section located on the lower side of the partition will also generate suction, thus preventing the sand and gravel that have fallen to the lower side of the partition from being sucked up by the filter section on the upper side of the partition, effectively ensuring the sludge suction effect of the filter section on the upper side of the partition. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the internal structure of the regulating tank of the present invention.

[0019] Figure 2This is a schematic diagram of the structure of the present invention.

[0020] Figure 3 This is a schematic diagram of the bottom structure of the regulating tank of the present invention.

[0021] Figure 4 This is a schematic diagram of the internal structure of the groove in this invention.

[0022] Figure 5 This is a schematic diagram of the filter cover structure of the present invention.

[0023] Figure 6 This is a schematic diagram of the support structure of the present invention.

[0024] Figure 7 This is a schematic diagram of the internal structure of the filter cover of the present invention.

[0025] Figure 8 This is a front view of the suction pipe of the present invention.

[0026] Figure 9 This is a schematic diagram of the sludge scraping mechanism of the present invention.

[0027] In the diagram: 1. Adjustment tank; 101. Groove; 2. Sludge scraper seat; 3. Sludge scraper; 4. Tension spring; 5. Drive motor; 6. Winding roller; 7. Steel wire rope; 8. Suction pipe; 9. Filter cover; 901. First filter hole; 10. Filter screen; 1001. Retention area; 11. Support; 12. Sealing plate; 13. First spring; 14. Sludge scraper; 15. Motor; 16. Rotating shaft; 17. Torsion spring; 18. Notch; 19. Collection box; 20. Baffle; 21. Second filter hole; 22. Opening; 23. Rib. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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] Example 1, please refer to Figures 1 to 9 A wastewater treatment device for easy bottom sludge cleaning includes an equalization tank 1. The equalization tank 1 is equipped with a sludge scraping mechanism, a sludge suction mechanism and a traction mechanism. The sludge scraping mechanism is located at the bottom of the equalization tank 1 and includes a sludge scraping seat 2. Both ends of the sludge scraping seat 2 are equipped with sludge scraping plates 3. The traction mechanism includes a drive motor 5 and a winding roller 6. The drive motor 5 is fixedly connected to the equalization tank 1, and the output shaft of the drive motor 5 is fixedly connected to the winding roller 6. The winding roller 6 is equipped with a wire rope 7, and one end of the wire rope 7 is fixedly connected to the sludge scraping seat 2. One end of the equalization tank 1 is provided with a groove 101. The cross-section of the groove 101 is trapezoidal, and the bottom surface of the groove 101 is lower than the bottom surface of the equalization tank 1. The sludge suction mechanism includes a sludge suction pipe 8 and a filter cover 9. The filter cover 9 is located at the bottom of the groove 101, and one end of the sludge suction pipe 8 is inserted into the filter cover 9.

[0030] The sludge in the equalization tank 1 is cleaned by setting up a sludge scraping mechanism, a sludge suction mechanism and a traction mechanism. The sludge suction mechanism is located at one end of the equalization tank 1 and the sludge scraping mechanism is located at the other end of the equalization tank 1. The traction mechanism pulls the sludge scraping mechanism so that it can move inside the equalization tank 1. The sludge scraping mechanism can scrape up the sludge deposited at the bottom of the equalization tank 1 and move the sludge to the sludge suction mechanism. The sludge suction mechanism can suck out the sludge in the equalization tank 1. Specifically, scraper plates 3 are symmetrically arranged on the scraper seat 2, and the scraper seat 2 is connected to the winding roller 6 by a steel wire rope 7. The winding roller 6 can be driven to rotate by the drive motor 5, and then the scraper seat 2 and scraper plates 3 are pulled by the steel wire rope 7 to scrape up the sludge at the bottom of the regulating tank 1. As the scraper seat 2 and scraper plates 3 move, the sludge moves towards the suction pipe 8 under the push of the scraper seat 2 and scraper plates 3 and finally enters the groove 101. The groove 101 is symmetrically provided with slopes, which have the effect of sludge aggregation. The suction pipe 8 is connected to a sludge pump. The sludge pump and the suction pipe 8 can suck out the sludge focused in the groove 101. After stopping work, the scraper seat 2 can return to its original position under the action of the tension spring 4.

[0031] The sludge at the bottom of the equalization tank 1 can be treated even when the water level is half-full, without the need to completely empty the entire equipment. This has little impact on the continuous operation of the sewage treatment. The sludge scraper 3 and the sludge scraper seat 2 can effectively treat the sludge that has hardened or scaled up, resulting in better cleaning.

[0032] Example 2 is an explanation based on Example 1. For details, please refer to [link / reference]. Figures 1 to 9 The filter cover 9 is square in shape, and first filter holes 901 are provided on both sides of the filter cover 9. The front end of the filter cover 9 is provided with a filter screen 10, which is disc-shaped and protrudes from the filter cover 9.

[0033] The groove 101 is also provided with a bracket 11, which is L-shaped. A sealing plate 12 is provided on the bracket 11, and the bracket 11 is elastically connected to the regulating pool 1 through a first spring 13. The sealing plate 12 is positioned opposite to the filter screen 10.

[0034] The filter cover 9 is provided with a cleaning mechanism for cleaning the outer end face of the filter screen 10. The cleaning mechanism includes a scraper 14 and a motor 15. The scraper 14 is located on the outside of the filter screen 10. The motor 15 is fixedly connected to the filter cover 9, and the output shaft of the motor 15 is fixedly connected to the scraper 14.

[0035] Both ends of the sealing plate 12 are provided with rotating shafts 16, and one end of the rotating shaft 16 is rotatably connected to the bracket 11. The sealing plate 12 and the bracket 11 are elastically connected by a torsion spring 17. The sealing plate 12 has a notch 18 that matches the scraper 14, and the filter screen 10 has a sealed dwell area 1001 that matches the shape of the scraper 14.

[0036] The scraper seat 2 is elastically connected to the regulating tank 1 via a tension spring 4, and when the scraper seat 2 moves toward the filter cover 9, it can push the bracket 11 to move until the sealing plate 12 and the filter screen 10 are tightly fitted together.

[0037] To prevent sand and gravel in the sludge from entering the sludge pump through the suction pipe 8 and damaging components such as the impeller of the sludge pump, this technical solution provides a filter cover 9 at the end of the suction pipe 8 to filter impurities in the sludge.

[0038] Taking a conventional small-scale sewage treatment system's equalization tank as an example, its dimensions are 2m long, 1.8m wide, and 2.5m high, with an effective water depth of 2m and an effective water volume of 7.2 cubic meters. The daily sewage treatment capacity is approximately 30 cubic meters. The average sludge accumulation thickness at the bottom of the tank increases by 1.5mm / day. The dry-wet mixed density of the deposited sludge is taken as 1.15t / cubic meter. If the bottom sludge is cleaned every 15 days, the thickness of the accumulated bottom sludge will be 22.5mm. The cleaning interval can be adjusted according to the water quality. The height of the scraper 3 and scraper seat 2 is 0.3m. The length of the scraper seat 2 is the same as or slightly larger than the length of the filter cover 9. The total length of the scraper 3 is set to 4-5 times that of the scraper seat 2.

[0039] The filter cover 9 is set in the groove 101. Channels are provided on the front and left and right sides of the filter cover 9 for sludge to enter. When the scraper 3 and scraper seat 2 are in motion, the scraper seat 2 will directly push the accumulated sludge to the front of the filter cover 9, while the scraper 3 will push the accumulated sludge to the grooves 101 on both sides of the filter cover 9. Since the amount of sludge accumulated by the scraper seat 2 is much less than the amount of sludge accumulated by the scraper 3, when the suction pipe 8 is working, the sludge enters the interior of the filter cover 9 through the three sides of the filter cover 9 at the same time, and is then discharged through the suction pipe 8. During this process, since there is less sludge focused on the front of the filter cover 9, it will be processed quickly, while a lot of sludge will remain on the sides of the filter cover 9. This will result in the problem of empty suction in the area on the front of the filter cover 9, which will waste the suction power. To address the aforementioned issues, this technical solution incorporates a movable sealing plate 12 on the front side of the filter cover 9, used to seal the front area of ​​the filter cover 9 during sludge suction. Specifically, the sealing plate 12 is mounted on a bracket 11, which is elastically connected to the regulating tank 1. To improve the stability of the bracket 11 during movement, a guide rod can be added between the bracket 11 and the regulating tank 1. The guide rod is fixed to the regulating tank 1, and the bracket 11 is slidably connected to the guide rod. When the scraper seat 2 moves towards the filter cover 9, it pushes the bracket 11 and the sealing plate 12 to move synchronously after reaching a certain position. Driven by the scraper seat 2, the sealing plate 12 tightly adheres to the filter screen 10, thereby achieving the effect of sealing the filter screen 10. When the filter screen 10 is blocked, the suction force on both sides of the filter cover 9 naturally increases, resulting in better sludge suction on both sides of the filter cover 9.

[0040] It should be noted that: in order to improve the sealing effect of the sealing plate 12, an elastic rubber sealing gasket can be set on the sealing plate 12.

[0041] During filtration, impurities are trapped on the outside of the filter screen 10. Due to suction, the impurities adhere to the filter screen 10. The presence of these impurities interferes with the sealing of the sealing plate 12. To solve this problem, this technical solution also provides a cleaning mechanism at the filter screen 10, which includes a scraper 14 and a motor 15. The motor 15 can drive the scraper 14 to rotate, thereby cleaning the impurities attached to the filter screen 10.

[0042] To further improve the sealing effect of the filter screen 10, this technical solution also provides a dwelling area 1001 on the filter screen 10 for the scraper 14 to rest in. There are no filter holes in the dwelling area 1001. After cleaning, the scraper 14 rests in the dwelling area 1001, and then the sealing plate 12 moves towards the filter screen 10. The sealing plate 12 has a notch 18 that matches the scraper 14, so that the presence of the scraper 14 will not interfere with the movement of the sealing plate 12 during the process of the sealing plate 12 and the filter screen 10. At the same time, by setting the dwelling area 1001 without filter holes, the dead corners of the sealing plate 12 on the filter screen 10 can be effectively reduced, and the sealing effect can be effectively improved.

[0043] During use, sludge will settle on the surface of the sealing plate 12, which will affect the sealing of the sealing plate 12. In order to reduce the settling of sludge on the sealing surface of the sealing plate 12, the sealing plate 12 is set on the bracket 11 with the sealing surface tilted downward. As the bracket 11 and the filter cover 9 gradually approach each other, one end of the sealing plate 12 first contacts the filter screen 10, then overcomes the resistance of the torsion spring 17 and gradually twists, and finally returns to its original position and fits against the filter screen 10.

[0044] Example 3 is an explanation based on Example 1. For details, please refer to [link / reference]. Figures 1 to 9 The bottom of the filter cover 9 is provided with a collection box 19, and the collection box 19 is separated from the filter cover 9 by a partition 20.

[0045] The suction pipe 8 is provided with a filter section, and the filter section is provided with several second filter holes 21. One end of the suction pipe 8 with the filter section passes through the partition 20 and is inserted into the collection box 19. The partition 20 is provided with several openings 22.

[0046] The front of the scraper 3 is arc-shaped, and the scraper 3 is provided with several raised ribs 23, which are triangular in shape.

[0047] By setting a second filter hole 21 on the sludge suction pipe 8, the sludge can be further filtered. Since the sludge in the equalization tank 1 contains a large amount of sand and gravel, the sludge suction pipe 8 will generate suction when it is working. At this time, the sand and gravel that are filtered out will block the second filter hole 21. To solve the above problem, this technical solution sets a filter section at one end of the sludge suction pipe 8. Correspondingly, a collection box 19 is also set at the bottom of the filter cover 9. The collection box 19 and the filter cover 9 are separated by a partition 20. One end of the sludge suction pipe 8 passes through the partition 20. Several openings 22 are provided on the partition 20. The partition 20 serves to separate the collection box 19 and the filter cover 9, and also to separate the filter section on the sludge suction pipe 8. The length of the filter section inside the collection box 19 is one-third of the length inside the filter cover 9. When the suction pipe 8 is working, the filtered sand and gravel are adsorbed onto the outer surface of the suction pipe 8. When the suction pipe 8 stops working, the sand and gravel fall under its own weight. Since the partition plate 20 has an opening 22, some of the sand and gravel will fall to the lower side of the partition plate 20 through the opening 22. When the suction pipe 8 starts working again, the filter section located on the lower side of the partition plate 20 will also generate a suction force. In this way, the sand and gravel that fall to the lower side of the partition plate 20 will basically not be sucked up by the filter section on the upper side of the partition plate 20. Even if some sand and gravel are sucked up as they accumulate, the partition plate 20 will hinder the movement of the sand and gravel, effectively ensuring the suction effect of the filter section on the upper side of the partition plate 20.

[0048] It should be noted that the reference Figures 7 to 8 The area with the second filter hole 21 on the suction pipe 8 in the figure is the filter section of the suction pipe 8.

[0049] By setting a scraper 3 with an arc-shaped working surface, when scraping sludge, if it encounters hardened sludge blocks, the sludge blocks will move along the curved surface and bend and stretch during the movement, making them easier to break. Both the scraper 3 and the scraper seat 2 are provided with ribs 23, and the ribs 23 are provided with conical surfaces, which can further improve the breaking effect of sludge blocks. The scraper seat 2 is elastically connected to the regulating tank 1 and moves under the traction of the wire rope 7. If you want to improve the stability of the scraper seat 2 during movement, you can set slides on both sides of the regulating tank 1. Correspondingly, a slider that matches the slide can be set at the end of the scraper 3.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A wastewater treatment device that facilitates bottom sludge removal, comprising an equalization tank (1), characterized in that: The regulating pool (1) is provided with a sludge scraping mechanism, a sludge suction mechanism and a traction mechanism. The sludge scraping mechanism is located at the bottom of the regulating pool (1) and includes a sludge scraping seat (2). Both ends of the sludge scraping seat (2) are provided with sludge scraping plates (3). The traction mechanism includes a drive motor (5) and a winding roller (6). The drive motor (5) is fixedly connected to the regulating pool (1), and the output shaft of the drive motor (5) is fixedly connected to the winding roller (6). The winding roller (6) is provided with a wire rope (7), and one end of the wire rope (7) is fixedly connected to the sludge scraping seat (2). The regulating tank (1) has a groove (101) at one end. The groove (101) has a trapezoidal cross-section and the bottom surface of the groove (101) is lower than the bottom surface of the regulating tank (1). The sludge suction mechanism includes a sludge suction pipe (8) and a filter cover (9). The filter cover (9) is located at the bottom of the groove (101). One end of the sludge suction pipe (8) is inserted into the filter cover (9). The bottom of the filter cover (9) is provided with a collection box (19), and the collection box (19) and the filter cover (9) are separated by a partition (20); The suction pipe (8) is provided with a filter section, and the filter section is provided with a number of second filter holes (21). One end of the suction pipe (8) with the filter section passes through the partition (20) and is inserted into the collection box (19). The partition (20) is provided with a number of openings (22).

2. The sewage treatment equipment for easy bottom sludge removal according to claim 1, characterized in that: The filter cover (9) is square in shape, and first filter holes (901) are provided on both sides of the filter cover (9). A filter screen (10) is provided at the front end of the filter cover (9). The filter screen (10) is disc-shaped and protrudes from the filter cover (9).

3. The sewage treatment equipment for easy bottom sludge removal according to claim 2, characterized in that: The groove (101) is also provided with a bracket (11), and the bracket (11) is L-shaped. The bracket (11) is provided with a sealing plate (12), and the bracket (11) is elastically connected to the regulating pool (1) through a first spring (13). The position of the sealing plate (12) is opposite to the filter screen (10).

4. The sewage treatment equipment for easy bottom sludge removal according to claim 3, characterized in that: The filter cover (9) is provided with a cleaning mechanism for cleaning the outer end face of the filter screen (10), and the cleaning mechanism includes a scraper (14) and a motor (15). The scraper (14) is located outside the filter screen (10), the motor (15) is fixedly connected to the filter cover (9), and the output shaft of the motor (15) is fixedly connected to the scraper (14).

5. A sewage treatment device for easy bottom sludge removal according to claim 4, characterized in that: Both ends of the sealing plate (12) are provided with rotating shafts (16), and one end of the rotating shaft (16) is rotatably connected to the bracket (11). The sealing plate (12) and the bracket (11) are elastically connected by a torsion spring (17). The sealing plate (12) is set on the bracket (11) with the sealing surface tilted downward. The sealing plate (12) has a notch (18) that matches the scraper (14), and the filter screen (10) has a sealed dwell area (1001) that matches the shape of the scraper (14).

6. A sewage treatment device for easy bottom sludge removal according to claim 5, characterized in that: The scraper seat (2) is elastically connected to the regulating tank (1) via a tension spring (4), and when the scraper seat (2) moves toward the filter cover (9), it can push the bracket (11) to move until the sealing plate (12) and the filter screen (10) are tightly fitted together.

7. The sewage treatment equipment for easy bottom sludge removal according to claim 1, characterized in that: The front of the scraper (3) is arc-shaped, and the scraper (3) is provided with a number of ribs (23), which are triangular in shape.

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