Domestic sewage harmless treatment device

Abstract

The invention discloses a domestic sewage harmless treatment device which comprises a first water tank, four supporting legs are fixedly mounted at the bottom of the first water tank, and a water inlet pipe is fixedly mounted on one side of the first water tank; the filtering mechanism is used for treating the domestic sewage; the filtering mechanism comprises a first filtering plate, the first filtering plate is fixedly mounted in an inner cavity of a first water tank, a cleaning frame is slidably mounted at the top of the first filtering plate, a scraping plate is slidably mounted at the bottom of the first water tank, a first waste discharge pipe is fixedly mounted on one side of the first water tank, and a second water tank is fixedly mounted on one side of the first water tank. A sealing plate moves to an inner cavity of a water outlet to seal the water outlet, a water inlet pipe can continuously convey water to an inner cavity of a first water tank, filtering work of inner cavities of the first water tank and a second water tank cannot be stopped, then a second connecting block is pushed through a first electric telescopic rod, and activated carbon can be replaced after a fourth water tank is moved out of an inner cavity of a third water tank.

Description

Technical Field

[0001] The present invention relates to the technical field of domestic sewage treatment, and specifically to a device for harmless treatment of domestic sewage. Background Art

[0002] A domestic sewage treatment device is a system used to treat sewage from households, residential areas or small communities. These devices usually include a series of physical and chemical processes, aiming to remove harmful components such as solid substances and oil stains in the sewage through multi-stage treatment to meet the discharge standards or for reuse purposes.

[0003] After retrieval, the patent document with the publication number CN213707946U discloses a device for harmless treatment of domestic sewage, which includes a support column. A first auger is welded to the top of the support column, and a waste pipe is welded through the bottom on the side of the first auger away from the driving motor. An opening is formed between the driving motor and the waste pipe at the bottom of the first auger. A fixing plate is fixed below the first auger by screws. A water outlet pipe is welded through the bottom of the fixing plate, and a first screen is welded to the inner wall of the top of the water outlet pipe. A second auger is welded to the top on the side of the first auger close to the driving motor, and a feeding pipe is welded through one side of the top of the second auger. A feeding hopper is welded to the top of the feeding pipe.

[0004] The above-mentioned device for harmless treatment of domestic sewage realizes simple pretreatment of sewage by arranging a second screen between the water inlet pipe and the connecting pipe on the inner wall of the water storage tank, which can filter out large particle impurities. At the same time, the second screen can be taken out through a handle, which is convenient for cleaning the second screen. In actual use, the second screen needs to be manually cleaned, and the sewage treatment device cannot continue to treat sewage when cleaning the second screen.

[0005] Therefore, a device for harmless treatment of domestic sewage is proposed to solve the above problems. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve the problem that sewage treatment cannot continue when the screen needs to be manually cleaned, the present invention proposes a device for harmless treatment of domestic sewage.

[0007] A device for harmless treatment of domestic sewage includes a first water tank. Four support legs are fixedly installed at the bottom of the first water tank, and a water inlet pipe is fixedly installed on one side of the first water tank; It further includes a filtering mechanism for treating domestic sewage; The filtering mechanism includes a first filter plate, which is fixedly installed in the inner cavity of the first water tank. A cleaning frame is slidably installed on the top of the first filter plate. A scraper is slidably installed at the bottom of the first water tank. A first waste discharge pipe is fixedly installed on one side of the first water tank. A second water tank is fixedly installed on one side of the first water tank. A second filter screen is fixedly installed on the inner wall of the second water tank. A cleaning plate is slidably installed on the top of the second filter screen. A servo motor is fixedly installed on the outer surface of the first water tank. The output shaft of the servo motor is fixedly connected to a threaded rod, and the threaded rod is fixedly connected to one side of one of the pulleys. A support plate is fixedly installed on the top of the second water tank. Both the inner cavity of the threaded rod and one side of the support plate are rotatably installed with pulleys. The two pulleys are driven by a belt. The other side of one of the pulleys is fixedly connected to a first connecting block, and the cleaning plate is fixedly installed on the outer surface of the first connecting block.

[0008] Preferably, a water retaining cover is fixedly installed in the inner cavity of the first water tank. One side of the water retaining cover is fixedly connected to a water baffle. Two limiting rods are fixedly installed in the inner cavity of the first water tank.

[0009] Preferably, both of the two limiting rods are slidably connected to the scraper. The threaded rod is threadedly connected to one side of the scraper. Brushes are fixedly installed on both sides of the scraper. The inner wall of the brush is provided with bristles and the bristles are closely attached to the outer surface of the threaded rod.

[0010] Preferably, a turbine blade is rotatably installed in the inner cavity of the water retaining cover. Both ends of the turbine blade penetrate through the first water tank and are fixedly connected to a cam. One side of the cam is rotatably connected to a connecting rod.

[0011] Preferably, first grooves are opened on both sides of the first water tank. Sliders are slidably installed on the inner surfaces of the first grooves. The two first grooves are respectively fixedly installed on both sides of the cleaning frame. The connecting rod is rotatably installed on one side of the slider.

[0012] Preferably, a water outlet is opened on one side of the second water tank. Second waste discharge pipes are fixedly installed on both sides of the second water tank.

[0013] Preferably, a third water tank is fixedly installed on one side of the second water tank. A fourth water tank is slidably installed on the inner surface of the third water tank. First electric telescopic rods are fixedly installed on both sides of the third water tank. The output ends of the two first electric telescopic rods are both fixedly connected to one side of the fourth water tank. A number of activated carbons are evenly fixedly installed in the inner cavity of the fourth water tank.

[0014] Preferably, a second groove is opened on the outer surface of the third water tank. A second limiting block is slidably installed on the inner surface of the second groove. A first limiting block is fixedly installed on the inner surface of the second groove. Two second electric telescopic rods are fixedly installed on one side of the second water tank. The output ends of the two second electric telescopic rods are commonly fixedly connected to a sealing plate.

[0015] Preferably, third grooves are formed on both sides of the fourth water tank, the first limiting block is slidably installed on the inner surface of the third groove, two second connecting blocks are fixedly installed on one side of the fourth water tank, and the output end of the first electric telescopic rod is fixedly installed on one side of the second connecting block.

[0016] Preferably, a limiting plate is fixedly installed in the inner cavity of the third water tank, a water outlet groove is formed in the bottom wall of the third water tank, and a plurality of activated carbons are fixedly installed on one side of the limiting plate.

[0017] The beneficial effects of the present invention are as follows: 1. In the present invention, when sewage impacts the turbine blades, the water retaining cover and the water baffle can block the sewage, so that the sewage flows through the first filter plate. Large impurities in the sewage will be left on the top of the first filter plate. The sewage passes through the first filter plate and enters the bottom of the inner cavity of the first water tank. The turbine blades will drive the cam to rotate, and the cam further causes the connecting rod to move. The connecting rod drives the slider to slide on the inner surface of the first groove. When the slider slides, it will drive the cleaning frame to slide on the top of the first filter plate. This action can push the impurities staying on the top of the first filter plate into the inner cavity of the first waste pipe, thereby achieving the purpose of filtering large impurities in domestic sewage.

[0018] 2. In the present invention, the output shaft of the servo motor drives the threaded rod to rotate. By limiting the scraper with two limiting rods, the scraper can make a reciprocating motion in the inner cavity of the first water tank. This action can make the scraper scrape off small impurities accumulated on the bottom wall of the first water tank to prevent the impurities from accumulating on the bottom wall of the first water tank. The sewage flows through the second filter screen, and the impurities are left on the top of the second filter screen. When the threaded rod rotates, it will drive the pulley to rotate. Through belt transmission, both pulleys start to rotate. The pulley located in the upper part drives the first connecting block to rotate, and the first connecting block synchronously drives the cleaning plate to slide along the surface of the second filter screen. The cleaning plate can push the impurities accumulated on the top of the second filter screen to the second waste pipes on both sides, and finally the impurities are discharged through the second waste pipes.

[0019] 3. The present invention adsorbs the oil stains in the sewage through activated carbon to achieve oil-water separation. Finally, the treated water passes through the limit plate, flows into the inner cavity of the third water tank through the water outlet tank, and is discharged through the third water tank. When the activated carbon needs to be replaced during use, first, the output ends of the two second electric telescopic rods contract, driving the sealing plate to approach the water outlet and move into the inner cavity of the water outlet to seal the water outlet. At this time, the water inlet pipe can continue to supply water to the inner cavity of the first water tank, and the filtering work in the inner cavities of the first water tank and the second water tank will not stop. Then, the output ends of the two first electric telescopic rods extend to push the second connecting block. The second limiting block slides on the inner surface of the second groove, and the first limiting block slides on the inner surface of the third groove, serving the purpose of keeping the fourth water tank always stable. After the fourth water tank is removed from the inner cavity of the third water tank, the activated carbon can be replaced. After the replacement is completed, the fourth water tank is moved into the inner cavity of the third water tank through the first electric telescopic rod, and the sealing plate is removed from the water outlet, and the sewage continues to be filtered through the fourth water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 Schematic diagram of the cross-sectional structure of the first water tank of an embodiment of the present invention; Figure 3 Schematic diagram of the connection structure of the threaded rod of an embodiment of the present invention; Figure 4 Schematic diagram of the connection structure of the connecting rod of an embodiment of the present invention; Figure 5 Schematic diagram of the driving structure of the cleaning plate of an embodiment of the present invention; Figure 6 Schematic diagram of the installation structure of the fourth water tank of an embodiment of the present invention; Figure 7 Schematic diagram of the internal structure of the fourth water tank of an embodiment of the present invention.

[0022] In the figure: 1. First water tank; 11. Water inlet pipe; 12. Support leg; 2. Water retaining cover; 21. Turbine blade; 22. Baffle; 23. First filter plate; 24. Cleaning frame; 3. Servo motor; 31. Threaded rod; 311. Scraper; 312. Brush; 32. Limiting rod; 33. First waste discharge pipe; 4. First groove; 41. Cam; 42. Connecting rod; 43. Slide block; 5. Second water tank; 501. Water outlet; 51. Support plate; 52. Pulley; 53. Belt; 54. First connecting block; 55. Cleaning plate; 56. Second filter screen; 57. Second waste discharge pipe; 6. Third water tank; 61. Second groove; 611. First limiting block; 62. Fourth water tank; 621. Second limiting block; 622. Second connecting block; 623. Activated carbon; 624. Limiting plate; 625. Water outlet trough; 626. Third groove; 63. First electric telescopic rod; 64. Second electric telescopic rod; 65. Sealing plate. Detailed implementation mode

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0024] Please refer to Figures 1 to 7 As shown in the figure, a domestic sewage harmless treatment device includes a first water tank 1, four support legs 12 are fixedly installed at the bottom of the first water tank 1, and a water inlet pipe 11 is fixedly installed on one side of the first water tank 1; It further includes a filtering mechanism for treating domestic sewage; The filtering mechanism includes a first filter plate 23, the first filter plate 23 is fixedly installed in the inner cavity of the first water tank 1, a cleaning frame 24 is slidably installed on the top of the first filter plate 23, a scraper 311 is slidably installed at the bottom of the first water tank 1, a first waste discharge pipe 33 is fixedly installed on one side of the first water tank 1, a second water tank 5 is fixedly installed on one side of the first water tank 1, a second filter screen 56 is fixedly installed on the inner wall of the second water tank 5, a cleaning plate 55 is slidably installed on the top of the second filter screen 56, a servo motor 3 is fixedly installed on the outer surface of the first water tank 1, the output shaft of the servo motor 3 is fixedly connected to a threaded rod 31, the threaded rod 31 is fixedly connected to one side of one of the pulleys 52, a support plate 51 is fixedly installed on the top of the second water tank 5, both the inner cavity of the threaded rod 31 and one side of the support plate 51 are rotatably installed with pulleys 52, the two pulleys 52 are driven by a belt 53, and the other side of one of the pulleys 52 is fixedly connected to a first connecting block 54, and the cleaning plate 55 is fixedly installed on the outer surface of the first connecting block 54.

[0025] During the process of treating domestic sewage, impurities in the sewage are generally filtered. However, the impurities in the sewage are likely to block the filter plates. Therefore, the filter plates need to be frequently cleaned during use, and sewage treatment work cannot be continued when cleaning the filter plates.

[0026] When the present invention is in use, first, sewage is conveyed into the inner cavity of the first water tank 1 through the water inlet pipe 11. The sewage first passes through the first filter plate 23. The first filter plate 23 conducts the first filtration on the sewage, leaving the large impurities in the sewage on the top of the first filter plate 23. The first filter plate 23 is inclined. Under the action of gravity, the large impurities will slide down along the first filter plate 23 into the first waste pipe 33 and finally be discharged from the first waste pipe 33. By sliding the cleaning frame 24 on the top of the first filter plate 23, the large impurities staying on the top of the first filter plate 23 can be pushed into the first waste pipe 33 to prevent the first filter plate 23 from being blocked. After passing through the first filter plate 23, the sewage enters the bottom of the inner cavity of the first water tank 1 and continues to flow into the inner cavity of the second water tank 5. Since the bottom of the inner cavity of the first water tank 1 is always in a state of having water, in order to prevent small impurities from accumulating on the bottom wall of the first water tank 1, by sliding the scraping plate 311 on the bottom wall of the first water tank 1, under the combined action of the sewage, the small impurities can be pushed up, so that the small impurities are mixed in the sewage and continue to flow along with the sewage; Then the sewage enters the inner cavity of the second water tank 5 and passes through the second filter screen 56 to enter the bottom of the inner cavity of the second water tank 5. The second filter screen 56 can filter out the small impurities in the sewage. When the threaded rod 31 rotates, the threaded rod 31 will also drive the pulley 52 to rotate. Through the transmission of the belt 53, the pulley 52 in the upper part drives the first connecting block 54 to rotate, and the first connecting block 54 further drives the cleaning plate 55 to slide on the surface of the second filter screen 56, achieving the purpose of cleaning the surface of the second filter screen 56.

[0027] Further, as Figure 2 and Figure 3 shown, a water retaining cover 2 is fixedly installed in the inner cavity of the first water tank 1. One side of the water retaining cover 2 is fixedly connected with a water baffle 22, and two limiting rods 32 are fixedly installed in the inner cavity of the first water tank 1; Both of the two limiting rods 32 are slidably connected with the scraping plate 311. The threaded rod 31 is threadedly connected to one side of the scraping plate 311. Brush hairs are provided on the inner walls of the two sides of the scraping plate 311, and the brush hairs are closely attached to the outer surface of the threaded rod 31.

[0028] When the present invention is in use, the output shaft of the servo motor 3 drives the threaded rod 31 to rotate. Under the limitation of the two limiting rods 32, the threaded rod 31 drives the scraper 311 to slide on the bottom wall of the first water tank 1. The scraper 311 can scrape up the impurities deposited on the bottom wall of the first water tank 1 to avoid the accumulation of impurities. The output shaft of the servo motor 3 drives the threaded rod 31 to drive the scraper 311 to reciprocate on the bottom wall of the first water tank 1. When the scraper 311 slides, the two brushes 312 can clean the surface of the threaded rod 31 to avoid the accumulation of impurities at the contact place between the scraper 311 and the threaded rod 31, resulting in poor sliding of the scraper 311.

[0029] Further, as Figure 4 shown, a turbine blade 21 is rotatably installed in the inner cavity of the water retaining cover 2. Both ends of the turbine blade 21 penetrate through the first water tank 1 and are fixedly connected with a cam 41. One side of the cam 41 is rotatably connected with a connecting rod 42; Both sides of the first water tank 1 are provided with first grooves 4. The inner surface of the first grooves 4 is slidably installed with sliders 43. The two first grooves 4 are respectively fixedly installed on both sides of the cleaning frame 24. The connecting rod 42 is rotatably installed on one side of the slider 43.

[0030] When the present invention is in use, when the water inlet pipe 11 conveys water into the inner cavity of the first water tank 1, the sewage will impact the turbine blade 21, thereby causing the turbine blade 21 to rotate. When the turbine blade 21 rotates, it will drive the cam 41 to rotate. The cam 41 further drives the connecting rod 42 to move. When the connecting rod 42 moves, it will rotate on one side of the slider 43 and drive the slider 43 to slide in the inner cavity of the first groove 4. The two sliders 43 slide simultaneously in the inner cavities of the two first grooves 4, which will drive the cleaning frame 24 to slide along the top of the first filter plate 23, thereby achieving the purpose of cleaning the large impurities on the surface of the first filter plate 23.

[0031] Further, as Figure 5 and 6 shown, a water outlet 501 is provided on one side of the second water tank 5. Second waste discharge pipes 57 are fixedly installed on both sides of the second water tank 5; A third water tank 6 is fixedly installed on one side of the second water tank 5. A fourth water tank 62 is slidably installed on the inner surface of the third water tank 6. First electric telescopic rods 63 are fixedly installed on both sides of the third water tank 6. The output ends of the two first electric telescopic rods 63 are fixedly connected to one side of the fourth water tank 62. A number of activated carbons 623 are evenly and fixedly installed in the inner cavity of the fourth water tank 62.

[0032] When the present invention is in use, sewage enters the inner cavity of the third water tank 6 through the water outlet 501. Before the sewage enters the inner cavity of the third water tank 6, it will first enter the fourth water tank 62. A number of activated carbons 623 are installed in a strip shape on the bottom wall of the fourth water tank 62. When in use, the sewage will pass through the activated carbons 623, and the activated carbons 623 adsorb the grease in the sewage to purify the sewage.

[0033] Further, as Figure 6 and Figure 7 shown, a second groove 61 is formed on the outer surface of the third water tank 6. A second limiting block 621 is slidably installed on the inner surface of the second groove 61. A first limiting block 611 is fixedly installed on the inner surface of the second groove 61. Two second electric telescopic rods 64 are fixedly installed on one side of the second water tank 5. A sealing plate 65 is fixedly connected to the output ends of the two second electric telescopic rods 64. Third grooves 626 are formed on both sides of the fourth water tank 62. The first limiting block 611 is slidably installed on the inner surface of the third groove 626. Two second connecting blocks 622 are fixedly installed on one side of the fourth water tank 62. The output end of the first electric telescopic rod 63 is fixedly installed on one side of the second connecting block 622. A limiting plate 624 is fixedly installed in the inner cavity of the third water tank 6. An outlet groove 625 is formed on the bottom wall of the third water tank 6. A number of the activated carbons 623 are fixedly installed on one side of the limiting plate 624.

[0034] When the present invention is in use, when replacing the activated carbon 623 in the fourth water tank 62, it is not necessary to stop the water inlet pipe 11 from conveying water into the inner cavity of the first water tank 1. By contracting the output ends of the two second electric telescopic rods 64, the sealing plate 65 can be moved to the inner cavity of the water outlet 501, thereby achieving the purpose of blocking the water outlet 501 with the sealing plate 65. Then, by extending the output end of the first electric telescopic rod 63, the fourth water tank 62 is pushed to slide by pushing the second connecting block 622. When the fourth water tank 62 slides, the second limiting block 621 slides on the inner surface of the second groove 61, and the first limiting block 611 slides on the inner surface of the third groove 626. This can make the sliding of the fourth water tank 62 more stable and avoid the phenomenon of the fourth water tank 62 being skewed. After the replacement of the activated carbon 623 is completed, the fourth water tank 62 can be restored to the position where it can treat sewage by contracting the output end of the first electric telescopic rod 63. At this time, the output ends of the two second electric telescopic rods 64 are extended to move the sealing plate 65 out of the inner cavity of the water outlet 501, and the sewage can continue to flow through the water outlet 501 into the inner cavity of the fourth water tank 62. At this time, the sealing plate 65 can slow down the flow rate of the sewage, avoiding a large amount of sewage that enters the inner cavity of the second water tank 5 from flowing out suddenly during the replacement of the activated carbon 623, so that the activated carbon 623 can adsorb the grease in the sewage cleanly. After the sewage flows into the inner cavity of the fourth water tank 62, the activated carbon 623 adsorbs the grease in the sewage, and the adsorbed sewage passes through the limiting plate 624 and flows out of the fourth water tank 62 through the water outlet groove 625, entering the bottom of the inner cavity of the third water tank 6. At this time, the water discharged from the bottom of the inner cavity of the third water tank 6 is the treated water.

[0035] Working principle: First, domestic sewage is conveyed into the inner cavity of the first water tank 1 through the water inlet pipe 11. After the sewage enters the inner cavity of the first water tank 1, it will impact the turbine blades 21. At the same time, the water retaining cover 2 and the water baffle 22 can block the sewage, causing the sewage to flow through the first filter plate 23, preventing the sewage from directly flushing into the first waste pipe 33. When the sewage flows through the first filter plate 23, impurities with large volumes in the sewage will be left on the top of the first filter plate 23. The sewage passes through the first filter plate 23 and enters the bottom of the inner cavity of the first water tank 1. When the turbine blades 21 rotate, the turbine blades 21 will drive the cam 41 to rotate. The cam 41 further causes the connecting rod 42 to move. The connecting rod 42 drives the slider 43 to slide on the inner surface of the first groove 4. When the slider 43 slides, it will drive the cleaning frame 24 to slide on the top of the first filter plate 23. This action can push the impurities staying on the top of the first filter plate 23 into the inner cavity of the first waste pipe 33, thereby achieving the purpose of filtering large impurities in domestic sewage. The sewage flows from the bottom of the inner cavity of the first water tank 1 to the inner cavity of the second water tank 5. During this process, the output shaft of the servo motor 3 drives the threaded rod 31 to rotate. By limiting the scraper 311 with two limiting rods 32, the scraper 311 can make a reciprocating motion in the inner cavity of the first water tank 1. This action can enable the scraper 311 to scrape off small impurities accumulated on the bottom wall of the first water tank 1 to prevent the impurities from accumulating on the bottom wall of the first water tank 1. When the sewage enters the inner cavity of the second water tank 5, the sewage flows through the second filter screen 56, and the impurities are left on the top of the second filter screen 56. When the threaded rod 31 rotates, it will drive the pulley 52 to rotate. Through the transmission of the belt 53, both pulleys 52 start to rotate. The pulley 52 located in the upper part drives the first connecting block 54 to rotate. The first connecting block 54 synchronously drives the cleaning plate 55 to slide along the surface of the second filter screen 56. The cleaning plate 55 can push the impurities accumulated on the top of the second filter screen 56 to the second waste pipes 57 on both sides. Finally, the impurities are discharged through the second waste pipes 57.

[0036] Next, the sewage flows from the inner cavity of the second water tank 5 to the fourth water tank 62. The sewage flows through a number of activated carbons 623, and the activated carbons 623 adsorb the oil stains in the sewage to achieve oil-water separation. Finally, the treated water passes through the limit plate 624 and flows into the inner cavity of the third water tank 6 through the water outlet groove 625, and is discharged through the third water tank 6. When in use, the activated carbon 623 needs to be replaced. First, the output ends of the two second electric telescopic rods 64 contract, driving the sealing plate 65 to approach the water outlet 501 and move into the inner cavity of the water outlet 501 to seal the water outlet 501. At this time, the water inlet pipe 11 can continue to supply water to the inner cavity of the first water tank 1, and the filtering work in the inner cavities of the first water tank 1 and the second water tank 5 will not stop. Then, the output ends of the two first electric telescopic rods 63 extend to push the second connecting block 622. The second limiting block 621 slides on the inner surface of the second groove 61, and the first limiting block 611 slides on the inner surface of the third groove 626, so as to keep the fourth water tank 62 always stable. After the fourth water tank 62 is removed from the inner cavity of the third water tank 6, the activated carbon 623 can be replaced. After the replacement is completed, the fourth water tank 62 is moved into the inner cavity of the third water tank 6 by the first electric telescopic rod 63, and the sealing plate 65 is removed from the water outlet 501, and the sewage continues to pass through the fourth water tank 62 for filtering work.

[0037] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. An apparatus for harmless treatment of domestic sewage, comprising a first water tank (1), four support legs (12) are fixedly installed at the bottom of the first water tank (1), and a water inlet pipe (11) is fixedly installed on one side of the first water tank (1); It further includes a filtering mechanism for treating domestic sewage; It is characterized in that: The filtering mechanism includes a first filter plate (23), the first filter plate (23) is fixedly installed in the inner cavity of the first water tank (1), a cleaning frame (24) is slidably installed on the top of the first filter plate (23), a scraping plate (311) is slidably installed at the bottom of the first water tank (1), a first waste discharge pipe (33) is fixedly installed on one side of the first water tank (1), a second water tank (5) is fixedly installed on one side of the first water tank (1), a second filter screen (56) is fixedly installed on the inner wall of the second water tank (5), a cleaning plate (55) is slidably installed on the top of the second filter screen (56), a servo motor (3) is fixedly installed on the outer surface of the first water tank (1), an output shaft of the servo motor (3) is fixedly connected to a threaded rod (31), the threaded rod (31) is fixedly connected to one side of one of the belt pulleys (52), a support plate (51) is fixedly installed on the top of the second water tank (5), belt pulleys (52) are rotatably installed in the inner cavity of the threaded rod (31) and on one side of the support plate (51), the two belt pulleys (52) are driven by a belt (53), and a first connecting block (54) is fixedly connected to one side of the other belt pulley (52), and the cleaning plate (55) is fixedly installed on the outer surface of the first connecting block (54).

2. The harmless treatment device for domestic sewage according to claim 1, characterized in that: A water retaining cover (2) is fixedly installed in the inner cavity of the first water tank (1), a water baffle (22) is fixedly connected to one side of the water retaining cover (2), and two limiting rods (32) are fixedly installed in the inner cavity of the first water tank (1).

3. The harmless treatment device for domestic sewage according to claim 2, characterized in that: Both of the two limiting rods (32) are slidably connected to the scraping plate (311), the threaded rod (31) is threadedly connected to one side of the scraping plate (311), brushes (312) are fixedly installed on both sides of the scraping plate (311), and bristles are arranged on the inner walls of the brushes (312) and the bristles are closely attached to the outer surface of the threaded rod (31).

4. The harmless treatment device for domestic sewage according to claim 2, wherein: A turbine blade (21) is rotatably installed in the inner cavity of the water retaining cover (2), both ends of the turbine blade (21) penetrate through the first water tank (1) and are fixedly connected to a cam (41), and a connecting rod (42) is rotatably connected to one side of the cam (41).

5. The harmless treatment device for domestic sewage according to claim 4, characterized in that: First grooves (4) are formed on both sides of the first water tank (1), sliders (43) are slidably installed on the inner surfaces of the first grooves (4), the two first grooves (4) are respectively fixedly installed on both sides of the cleaning frame (24), and the connecting rod (42) is rotatably installed on one side of the slider (43).

6. The harmless treatment device for domestic sewage according to claim 1, wherein: A water outlet (501) is formed on one side of the second water tank (5), and second waste discharge pipes (57) are fixedly installed on both sides of the second water tank (5).

7. The harmless treatment device for domestic sewage according to claim 6, characterized in that: On one side of the second water tank (5), a third water tank (6) is fixedly installed. Inside the third water tank (6), a fourth water tank (62) is slidably installed. On both sides of the third water tank (6), first electric telescopic rods (63) are fixedly installed. The output ends of the two first electric telescopic rods (63) are fixedly connected to one side of the fourth water tank (62). Inside the fourth water tank (62), a number of activated carbons (623) are evenly and fixedly installed.

8. An innocuous treatment device for domestic sewage according to claim 7, characterized in that: On the outer surface of the third water tank (6), a second groove (61) is formed. Inside the second groove (61), a second limiting block (621) is slidably installed. Inside the second groove (61), a first limiting block (611) is fixedly installed. On one side of the second water tank (5), two second electric telescopic rods (64) are fixedly installed. The output ends of the two second electric telescopic rods (64) are commonly fixedly connected to a sealing plate (65).

9. An apparatus for harmless treatment of domestic sewage according to claim 8, characterized in that: On both sides of the fourth water tank (62), third grooves (626) are formed. The first limiting block (611) is slidably installed inside the third grooves (626). On one side of the fourth water tank (62), two second connecting blocks (622) are fixedly installed. The output end of the first electric telescopic rod (63) is fixedly installed on one side of the second connecting block (622).

10. A domestic sewage harmless treatment device according to claim 8, characterized in that: Inside the third water tank (6), a limiting plate (624) is fixedly installed. On the bottom wall of the third water tank (6), a water outlet groove (625) is formed. A number of the activated carbons (623) are fixedly installed on one side of the limiting plate (624).

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