Sewage ecological purification device for water environment treatment

Abstract

The invention discloses an ecological sewage purification device for water environment treatment, and relates to the technical field of sewage purification, the ecological sewage purification device for water environment treatment comprises a water inlet end body and a water outlet end body, the water inlet end body and the water outlet end body are arranged up and down, an annular flow guide loop is formed by the top end of the water outlet end body and the interior of the water inlet end body, the diameter of the flow guide loop is gradually reduced from the middle to the upper end and the lower end, a filter screen assembly is installed on the outer side of the water inlet end body, and the filter screen assembly gradually points to the interior of the water outlet end body downwards from outside to inside. A strip-shaped scraping plate is arranged right above the outer side of the filter screen assembly; the filter screen assembly comprises an impeller, the impeller is installed in the end, communicated with the water outlet end body, of the filter screen assembly, self-rotation cleaning can be conducted through the filter screen assembly, damage and blockage possibly caused by long-time filtering at one position are avoided, and therefore the efficient filtering effect can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage purification, and specifically to a sewage ecological purification device for water environment treatment. Background Art

[0002] For the treatment of sewage, it is usually processed through a purification device. For the purification of sewage, it first filters the sewage through a filter screen to remove its impurities. However, due to the fixed setting of the filter screen, the sewage may be concentrated at one place of the filter screen for filtration. After long-term use, it is easy to cause damage and blockage of the filter screen. Therefore, we propose a sewage ecological purification device for water environment treatment. Summary of the Invention

[0003] The present invention provides a sewage ecological purification device for water environment treatment, which solves the problems raised in the above background art.

[0004] To achieve the above objectives, the present invention is realized through the following technical solutions: The device includes a water inlet end body and a water outlet end body. The water inlet end body and the water outlet end body are arranged vertically, and the top end of the water outlet end body extends into the interior of the water inlet end body from the bottom end of the water inlet end body to form an annular diversion loop that gradually becomes smaller from the middle to the upper and lower ends. A detachable filter screen assembly is installed on the outside of the water inlet end body. The filter screen assembly gradually points downward from the outside to the inside towards the interior of the water outlet end body, and the sewage enters the water outlet end body through the filter screen assembly. The filter screen assembly includes an annular filter cylinder, an impeller, and an inner cleaning component that moves along the axis inside the filter screen assembly. The impeller is installed inside the annular filter cylinder at the end where it communicates with the water outlet end body. Sewage is filtered from the outside of the annular filter cylinder into it and then transported to the inner water outlet end body. When the water flowing into the water outlet end body in the filter screen assembly passes through the impeller, the rotation can drive the annular filter cylinder to rotate itself. A strip-shaped scraper is provided directly above the outside of the filter screen assembly.

[0005] Preferably, the filter screen assembly further includes a mounting plate and a sealing circular plate. The annular filter cylinder is located between the diversion loop and the collection tank. The sealing circular plate is installed at one end of the annular filter cylinder away from the interior of the water outlet end body, and its diameter is larger than that of the annular filter cylinder. The mounting plate is installed on the outside of the water inlet end body by bolts, and the middle of the sealing circular plate is movably sleeved on the center of the mounting plate. A transmission mechanism is installed on the outer side of the water inlet end body for driving the annular filter cartridge to rotate. A sensor is installed on the water inlet end body for monitoring the rotation of the annular filter cartridge. When the annular filter cartridge stops rotating, the sensor transmits a signal to start the transmission mechanism. The top of the water inlet end body is provided with a water inlet communicating with its interior. A collection tank for excretion is formed between the outer side of the top of the water outlet end body and the water inlet end body. The filter screen assembly is directly above the collection tank. The diameter of the part of the inner cleaning component close to the impeller is smaller than that of the part facing away from the impeller, and the diameter of the part of the inner cleaning component facing away from the impeller is adapted to the filter screen assembly. A flushing pipeline is arranged on the side of the inner cleaning component facing away from the impeller, and the flushing pipeline extends out from the outer side of the part of the inner cleaning component close to the impeller.

[0006] Preferably, the transmission mechanism includes a first motor, a gear, a transmission gear ring, and a linkage gear ring. The linkage gear ring is installed at the extended end of the sealing circular plate and can rotate around the axis of the annular filter cartridge. The bottom end of the transmission gear ring meshes with the linkage gear ring. The gear meshes with the inner side of the top end of the transmission gear ring. The output shaft of the first motor is connected to the center of the gear from top to bottom.

[0007] Preferably, a mounting positioning ring is fixedly connected to the part of the outer side of the water inlet end body above the mounting plate. The gear is connected to the top of the mounting positioning ring through a pin. The transmission gear ring is movably sleeved on the outer side of the mounting positioning ring.

[0008] Preferably, a mounting sleeve is installed on the top of the mounting positioning ring through bolts. The mounting sleeve is sleeved on the outer side of the transmission gear ring. The first motor is installed on the top of the first motor.

[0009] Preferably, a pull rod passing through the sealing circular plate and extending out is installed at the center of the side of the inner cleaning component facing away from the impeller. A spring is fixedly connected to the extended end of the pull rod. One end of the spring is connected to the outer side of the mounting plate for pulling the inner cleaning component out along the axis of the annular filter cartridge.

[0010] Preferably, the water outlet end body is composed of a diversion block and a main pipeline arranged up and down. The diversion block is a diamond-shaped structure gradually decreasing from the middle to both ends. The inner wall of the main pipeline is provided with an ecological purification unit with multiple filter beds. An aeration system is arranged at the bottom of the ecological purification unit, and the aeration system penetrates through multiple filter beds of the ecological purification unit.

[0011] Preferably, the ecological purification unit includes a coarse filter bed, an adsorption filter bed, and a biodegradation filter bed arranged layer by layer from top to bottom. The filler in the coarse filtration filter bed is gravel with a particle size between 20 and 50 mm; The filler in the adsorption filter bed is ceramsite with a particle size between 10 and 20 mm and activated carbon with a particle size between 5 and 10 mm; The filler in the biodegradation filter bed is volcanic rock with a particle size between 5 and 10 mm and porous biological filler, and microorganisms are attached to the surface; The porous biological filler is made of polyethylene or polypropylene.

[0012] Preferably, the aeration system includes an aeration pipeline, a microporous aeration head and a blower; The aeration pipeline extends into the ecological purification unit from the middle of the bottom of the ecological purification unit, and is in a spiral shape in each layer of the filter bed of the ecological purification unit. The microporous aeration head is installed on the aeration pipeline, and one end of the aeration pipeline extends out of the main pipeline and is connected to the blower.

[0013] Preferably, the collecting tank is inclined. A drain pipe is connected to the lowest part of the collecting tank. A spiral feeding component extending into the collecting tank is arranged inside the drain pipe. A drain port is arranged at the bottom of the end of the drain pipe away from the collecting tank. A valve is arranged at the drain port. A second motor on the same central axis as the spiral feeding component is installed outside the spiral feeding component, and the second motor is connected to the spiral feeding component.

[0014] The present invention has the following beneficial effects: 1. For the sewage ecological purification device for water environment treatment, through the setting of the filter screen assembly, when the sewage is filtered, it can rotate and clean itself, ensuring the filtering effect. And through its rotating action, filtration can be carried out everywhere, avoiding possible damage and blockage caused by long-term filtration at one place. At the same time, under the action of the centrifugal force generated by its self-rotation, impurities can be thrown out, reducing the attachment of impurities, so as to achieve the effect of efficient filtration.

[0015] 2. For the sewage ecological purification device for water environment treatment, through the design of the position of the annular filter cylinder, impurities can be smoothly moved into the collecting tank under the guiding and pushing of the water flow, so that the impurities can accumulate by themselves, which is convenient for cleaning.

[0016] 3. For the sewage ecological purification device for water environment treatment, through the movement of the inner cleaning component, the inside of the filter screen assembly can be cleaned, making the cleaning of the attached impurities more thorough. And under the interception of the inner cleaning component, water can pass through the inner cleaning component through the flushing pipeline, and then produce a flushing effect from the inside to the outside on the annular filter cylinder, so as to reduce the impurities passing through the annular filter cylinder while cleaning the attached impurities on it, making the impurities easier to be flushed out, so that the cleaning effect is better. Brief Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic sectional structural diagram of the present invention; Figure 3 is a schematic structural diagram of the connection of the transmission gear ring of the present invention; Figure 4 is a schematic structural diagram of the connection of the linkage gear ring of the present invention; Figure 5 is a schematic structural diagram of the connection of the annular filter cartridge of the present invention; Figure 6 is a schematic sectional structural diagram of the connection of the annular filter cartridge of the present invention; Figure 7 is the present invention Figure 2 schematic structural diagram at position A; Figure 8 is the present invention Figure 2 schematic structural diagram at position B.

[0018] In the figure: 1, water inlet end body; 2, water outlet end body; 3, water inlet; 4, drain pipe; 5, aeration pipeline; 6, installation positioning ring; 7, installation sleeve; 8, first motor; 9, pull rod; 10, spring; 11, guide block; 12, screw feeding assembly; 13, second motor; 14, main pipeline; 15, collection tank; 16, gear; 17, transmission gear ring; 18, linkage gear ring; 19, mounting plate; 20, annular filter cartridge; 21, impeller; 22, strip-shaped scraper; 23, sealing round plate; 24, inner cleaning assembly; 25, flushing pipeline; 26, diversion loop; 27, coarse filter bed; 28, adsorption filter bed; 29, biodegradation filter bed. Detailed Description of the Invention

[0019] 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 efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1 to 7 , a sewage ecological purification device for water environment treatment, including a water inlet end body 1 and a water outlet end body 2, The top of the water inlet end body 1 is provided with a water inlet 3 that communicates with its interior. Through the water inlet 3, sewage can smoothly enter. The water inlet end body 1 and the water outlet end body 2 are arranged vertically, and the top end of the water outlet end body 2 extends into the interior of the water inlet end body 1 from the bottom end of the water inlet end body 1. The top end of the water outlet end body 2 and the interior of the water inlet end body 1 form an annular diversion loop 26, and the diameter of the diversion loop 26 gradually decreases from the middle to the upper and lower ends. Then, the sewage flowing in from the water inlet 3 can be diverted along the diversion loop 26. A collection tank 15 for excretion is formed between the outer side of the top end of the water outlet end body 2 and the water inlet end body 1. The filtered impurities can fall into the collection tank 15 for concentration. With the concentrated impurities, the subsequent cleaning treatment of the impurities is more convenient, thus making its cleaning more convenient; A detachable filter screen assembly is installed on the outer side of the water inlet end body 1. The filter screen assembly gradually points downward from the outside to the inside towards the interior of the water outlet end body 2. The filter screen assembly is located directly above the collection tank 15. The filter screen assembly divides the diversion loop 26 and the interior of the water outlet end body 2 into two parts. A strip-shaped scraper 22 is provided directly above the outer side of the filter screen assembly. Through this design, the sewage flows into the interior of the filter screen assembly to achieve the effect of filtering impurities. When the water flows into the water outlet end body 2 within the filter screen assembly, the water flow can relatively push the impurities to move downward, generating a tendency to move into the collection tank 15. After the impurities reach the collection tank 15, the impurities will relatively stay in the collection tank 15. For the impurities scraped off by the strip-shaped scraper 22, under the subsequent push of the water flow, they can continue to flow downward until they move to the collection tank 15, enabling the impurities to achieve the effect of self-concentration, thus making the treatment of the impurities more convenient; The filter screen assembly includes an impeller 21 and an inner cleaning assembly 24 that moves along the axis inside the filter screen assembly. The impeller 21 is installed inside the end of the filter screen assembly that communicates with the water outlet end body 2. When the water flows into the water outlet end body 2, the water flow can generate a driving force to drive the impeller 21 to drive the filter screen assembly to rotate. Under the action of the strip-shaped scraper 22, the strip-shaped scraper 22 can scrape the outer side of the filter screen assembly comprehensively, enabling the outer side of the filter screen assembly to be relatively comprehensively cleaned and achieving the self-cleaning effect. It reduces the influence of impurities clogging on the filter screen assembly, thus making its filtration more efficient. The diameter of the inner cleaning component 24 near the impeller 21 is smaller than that of the part facing away from the impeller 21, so that water can flow out smoothly through the flushing pipeline 25. Moreover, the diameter of the part of the inner cleaning component 24 facing away from the impeller 21 is adapted to the filter screen component. This part can clean the impurities inside the filter screen component, enabling the impurities that cannot be cleaned by the external strip-shaped scraper 22 to be cleaned smoothly. On the side of the inner cleaning component 24 facing away from the impeller 21, there is a flushing pipeline 25. The flushing pipeline 25 extends out from the outside of the part of the inner cleaning component 24 near the impeller 21. By moving the inner cleaning component 24, the inside of the filter screen component can be cleaned, making the cleaning of the attached impurities more thorough. Under the interception of the inner cleaning component 24, a difference is generated between the part of the filter screen component cleaned by the inner cleaning component 24 and the uncleaned part, enabling water to enter the filter screen component and flow towards the water outlet end body 2 through the flushing pipeline 25. Under the guidance of the flushing pipeline 25, the flowing water can produce an effect of flushing the impurities, making the impurities easier to be flushed out, thereby making the cleaning effect better.

[0021] Please refer to Figures 1 to 7 , the filter screen component further includes a mounting plate 19 and a sealing circular plate 23; The annular filter cylinder 20 is located between the diversion loop 26 and the collecting tank 15; The sealing circular plate 23 is installed at one end of the annular filter cylinder 20 away from the inside of the water outlet end body 2, and its diameter is larger than that of the annular filter cylinder 20. The sealing circular plate 23 can drive the annular filter cylinder 20 to rotate; The mounting plate 19 is installed on the outside of the water inlet end body 1 by bolts. The middle of the sealing circular plate 23 is movably sleeved on the center of the mounting plate 19. The sealing circular plate 23 can rotate on the mounting plate 19. With the installation of the mounting plate 19, the annular filter cylinder 20 can be installed on the water inlet end body 1; A transmission mechanism is installed on the outside of the water inlet end body 1 for driving the annular filter cylinder 20 to rotate. A sensor is installed on the water inlet end body 1 for monitoring the rotation of the annular filter cylinder 20. When the annular filter cylinder 20 stops rotating, the sensor transmits a signal to start the transmission mechanism, which can drive the annular filter cylinder 20 to rotate through the transmission mechanism, prompting the annular filter cylinder 20 to rotate, and its strip-shaped scraper 22 can clean the impurities.

[0022] Please refer to Figures 1 to 7 , the transmission mechanism includes a first motor 8, a gear 16, a transmission gear ring 17, and a linkage gear ring 18; The linked gear ring 18 is installed at the end of the sealing circular plate 23 that extends out. It is the end of the sealing circular plate 23 outside the installation plate 19, enabling it to be driven while ensuring sealing and to rotate around the axis of the annular filter cartridge 20. Driven by the linked gear ring 18, the sealing circular plate 23 can rotate. The bottom end of the transmission gear ring 17 meshes with the linked gear ring 18. Driven by the transmission gear ring 17, the linked gear ring 18 can rotate. The gear 16 meshes with the inner side of the top end of the transmission gear ring 17. Driven by the gear 16, the transmission gear ring 17 can rotate. The output shaft of the first motor 8 is connected to the center of the gear 16 from top to bottom. The first motor 8 includes a signal receiving terminal and a control system inside, enabling the first motor 8 to start smoothly. Driven by its output shaft, the gear 16 can rotate.

[0023] Please refer to Figures 1 to 7 , a mounting positioning ring 6 is fixedly connected to the part of the outer side of the water inlet end body 1 above the mounting plate 19. The gear 16 is connected to the top of the mounting positioning ring 6 through a pin. The transmission gear ring 17 is movably sleeved outside the mounting positioning ring 6. A part of the inner side of the top end of the transmission gear ring 17 protrudes, that is, the transmission gear ring 17 can be circularly sleeved on the positioning ring 6 from top to bottom, enabling it to be installed on the positioning ring 6. And when the transmission gear ring 17 is disassembled, directly pulling out the transmission gear ring 17 upward can complete the disassembly, enabling the transmission gear ring 17 to be smoothly installed on the mounting positioning ring 6.

[0024] Please refer to Figures 1 to 7 , a mounting sleeve 7 is installed on the top of the mounting positioning ring 6 through bolts. The mounting sleeve 7 is sleeved on the outer side of the transmission gear ring 17. Through the limitation of the mounting sleeve 7, the transmission gear ring 17 can be stably installed on the positioning ring 6 to limit its position. The first motor 8 is installed on the top of the first motor 8. Through the installation of the mounting sleeve 7, the transmission gear ring 17 can be stably installed on the water inlet end body 1, and at the same time, the gear 16 and the transmission gear ring 17 are connected. For the convenience of connecting the gear 16 and the transmission gear ring 17, the mounting sleeve 7 can be made of a transparent material.

[0025] Please refer to Figures 1 to 7, a pull rod 9 is installed at the center of the side of the inner cleaning component 24 facing away from the impeller 21, and the pull rod 9 passes through the sealing circular plate 23 and extends out. The end of the pull rod 9 extends out of the inside of the water inlet end body 1 and is in the outside world. Through the pull rod 9, the inner cleaning component 24 can be smoothly pushed to move inside the annular filter cylinder 20, and the inner cleaning component 24 can move inside the annular filter cylinder 20, so that the inside of the annular filter cylinder 20 can be relatively completely cleaned, ensuring the cleaning effect. The extended end of the pull rod 9 is fixedly connected with a spring 10, and one end of the spring 10 is connected to the outside of the mounting plate 19, which is used to pull out the inner cleaning component 24 along the axis of the annular filter cylinder 20, so that the inner cleaning component 24 can abut against the sealing circular plate 23 without being pushed, and under the action of the elastic force of the spring 10, the inner cleaning component 24 can produce an automatic return effect.

[0026] Please refer to Figures 1 to 8 , the water outlet end body 2 is composed of a diversion block 11 and a main pipeline 14 arranged up and down. The diversion block 11 is a diamond-shaped structure that gradually decreases from the middle to both ends. The inner wall of the main pipeline 14 is provided with an ecological purification unit with multiple filter beds; The bottom of the ecological purification unit is provided with an aeration system. The aeration system penetrates through multiple filter beds of the ecological purification unit. Through the ecological purification unit, the sewage can be further treated, making the purification more thorough. And under the action of the aeration system, the blockage of the ecological purification unit can be effectively prevented.

[0027] Please refer to Figures 1 to 8 , the ecological purification unit includes a coarse filter bed 27, an adsorption filter bed 28, and a biodegradation filter bed 29 arranged layer by layer from top to bottom; The filler in the coarse filter bed 27 is gravel with a particle size between 20 - 50 mm. Through the coarse filter bed 27, large particle suspensions and part of the sediment in the sewage can be removed; The filler in the adsorption filter bed 28 is ceramsite with a particle size between 10 - 20 mm and activated carbon with a particle size between 5 - 10 mm. Through the adsorption filter bed 28, organic matters, heavy metal ions, and part of the dissolved pollutants in the sewage can be adsorbed; The filler in the biodegradation filter bed 29 is volcanic rock with a particle size between 5 - 10 mm and porous biological fillers, and there are microorganisms attached to the surface. Through the microbial community attached to the biodegradation filter bed 29, the organic matters, ammonia nitrogen, and part of the phosphorus in the sewage are degraded. The microbial community can be heterotrophic bacteria, nitrifying bacteria, polyphosphate-accumulating bacteria, etc.; The porous biological filler is made of polyethylene or polypropylene.

[0028] Please refer to Figures 1 to 8 , the aeration system includes an aeration pipeline 5, microporous aeration heads, and a blower; The aeration pipe 5 extends into the interior from the middle at the bottom of the ecological purification unit, and is in a spiral shape at each layer of the filter bed in the ecological purification unit, so that the aeration of each layer of the filter bed in the ecological purification unit is relatively uniform. The microporous aeration heads are installed on the aeration pipe 5. One end of the aeration pipe 5 extends out of the main pipe 14 and is connected to a blower. Under the action of the blower, air can be conveyed into the aeration pipe 5.

[0029] Please refer to Figures 1 to 7 , the collection tank 15 is inclined. The lowest part of the collection tank 15 is connected with a discharge pipe 4, so that the impurities in the collection tank 15 can be continuously concentrated towards the discharge pipe 4, making its treatment smoother. A spiral feeding component 12 extending into the collection tank 15 is arranged inside the discharge pipe 4. A discharge port is arranged at the bottom of the end of the discharge pipe 4 far away from the collection tank 15, and a valve is arranged at the discharge port. A second motor 13 on the same center line as the spiral feeding component 12 is installed outside the spiral feeding component 12. The second motor 13 is connected to the spiral feeding component 12. Driven by the output shaft of the second motor 13, the spiral feeding component 12 can rotate to convey impurities to the discharge port, and the impurities are cleaned regularly. When cleaning the impurities, the valve is opened.

[0030] In summary, when the sewage ecological purification device for water environment treatment is in use, sewage enters the interior of the inlet end body 1 from the inlet 3, and then, under the guidance of the diversion block 11, the sewage can flow along the diversion loop 26 towards the annular filter cylinder 20. Subsequently, under the filtering action of the annular filter cylinder 20, impurities can be filtered out, and the water moves from the middle of the annular filter cylinder 20 into the interior of the outlet end body 2. When the water passes through the impeller 21, the impeller 21 can drive the annular filter cylinder 20 to rotate under the push of the water flow. Under the action of the rotation of the annular filter cylinder 20, all parts of the annular filter cylinder 20 can be filtered, avoiding the filtration effect being affected by filtration at one place. Under the action of the rotation of the annular filter cylinder 20, the strip-shaped scraper 22 can clean the impurities attached to the outer side of the annular filter cylinder 20, and the cleaned impurities tend to move downward under the drive of the water flow, enabling the impurities to smoothly move into the collection tank 15. The water entering the outlet end body 2 can successively pass through the coarse filtration filter bed 27, the adsorption filter bed 28, and the biodegradation filter bed 29. The coarse filtration filter bed 27 can remove large particle suspended matters and part of the precipitates in the sewage. The adsorption filter bed 28 can adsorb organic matters, heavy metal ions, and part of the dissolved pollutants in the sewage. The microbial community attached to the biodegradation filter bed 29 degrades the organic matters, ammonia nitrogen, and part of the phosphorus in the sewage. Under the action of the blower, air can be sent into the aeration pipeline 5, and oxygen is supplied to the sewage through the microporous aeration heads, increasing the dissolved oxygen content in the water body, promoting the activity of microorganisms, enhancing the degradation efficiency of organic matters, and preventing the filler layer from being blocked and keeping the water flow smooth through aeration; When the annular filter cylinder 20 is blocked and does not rotate, the sensor transmits a signal to start the first motor 8. Driven by the output shaft of the first motor 8, the gear 16 can rotate, driving the transmission gear ring 17 to rotate, and then driving the linkage gear ring 18 to rotate. The annular filter cylinder 20 is driven to rotate through the biodegradation filter bed 29, enabling the strip-shaped scraper 22 to clean the impurities, and by pushing the pull rod 9, the inner cleaning component 24 can be moved towards the impeller 21. Through the diversion of the flushing pipeline 25, the water flow velocity at the flushing pipeline 25 is relatively large at this time, and the annular filter cylinder 20 can be flushed from the inside to the outside, making the cleaning effect better.

[0031] During installation, the annular filter cylinder 20 is inserted into the interior of the inlet end body 1. After the mounting plate 19 abuts against the outer side of the inlet end body 1, the mounting plate 19 is installed on the inlet end body 1 through bolts to complete the installation of the annular filter cylinder 20. Subsequently, the transmission gear ring 17 is sleeved on the installation positioning ring 6, enabling the installation positioning ring 6 to mesh with the linkage gear ring 18, and then the installation sleeve 7 is installed, and the gear 16 is meshed with the transmission gear ring 17. Finally, the installation sleeve 7 is fixed with bolts. During disassembly, the reverse operation is performed.

[0032] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0033] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sewage ecological purification device for water environment treatment, characterized in that: The device includes an inlet end body (1) and an outlet end body (2), The inlet end body (1) and the outlet end body (2) are arranged vertically, and the top end of the outlet end body (2) extends into the interior of the inlet end body (1) from the bottom end of the inlet end body (1) to form an annular diversion loop (26) that gradually becomes smaller from the middle to the upper and lower ends. A detachable filter screen assembly is installed on the outside of the inlet end body (1). The filter screen assembly gradually points downward from the outside to the inside towards the interior of the outlet end body (2), and sewage enters the outlet end body (2) through the filter screen assembly. The filter screen assembly includes an annular filter cylinder (20), an impeller (21), and an inner cleaning assembly (24) that moves along the axis inside the filter screen assembly. The impeller (21) is installed inside the end of the annular filter cylinder (20) communicating with the outlet end body (2). Sewage is filtered from outside the annular filter cylinder (20) into it and transported to the inner outlet end body (2). When the water flowing into the outlet end body (2) in the filter screen assembly passes through the impeller (21), the impeller (21) rotates to drive the annular filter cylinder (20) to rotate itself. A strip-shaped scraper (22) is provided directly above the outside of the filter screen assembly.

2. The sewage ecological purification device for water environment treatment according to claim 1, wherein: The filter screen assembly further includes a mounting plate (19) and a sealing circular plate (23); The annular filter cylinder (20) is located between the diversion loop (26) and the collection tank (15); The sealing circular plate (23) is installed at one end of the annular filter cylinder (20) away from the interior of the outlet end body (2), and its diameter is larger than that of the annular filter cylinder (20); The mounting plate (19) is installed on the outside of the inlet end body (1) by bolts, and the middle of the sealing circular plate (23) is movably sleeved on the center of the mounting plate (19); A transmission mechanism is installed on the outside of the inlet end body (1) to drive the annular filter cylinder (20) to rotate. A sensor is installed on the inlet end body (1) to monitor the rotation of the annular filter cylinder (20). When the annular filter cylinder (20) stops rotating, the sensor transmits a signal to start the transmission mechanism. The top of the inlet end body (1) is provided with an inlet (3) communicating with its interior. A collection tank (15) for excretion is formed between the outside of the top end of the outlet end body (2) and the inlet end body (1). The filter screen assembly is directly above the collection tank (15). The diameter of the part of the inner cleaning assembly (24) close to the impeller (21) is smaller than the diameter of the part facing away from the impeller (21), and the diameter of the part of the inner cleaning assembly (24) facing away from the impeller (21) is adapted to the filter screen assembly. A flushing pipeline (25) is provided on the side of the inner cleaning assembly (24) facing away from the impeller (21), and the flushing pipeline (25) extends out from the outside of the part of the inner cleaning assembly (24) close to the impeller (21).

3. The sewage ecological purification device for water environment treatment according to claim 2, characterized in that: The transmission mechanism includes a first motor (8), a gear (16), a transmission gear ring (17), and a linkage gear ring (18); The linkage gear ring (18) is installed at the extended end of the sealing circular plate (23) and can rotate around the axis of the annular filter cylinder (20). The bottom end of the transmission gear ring (17) meshes with the linkage gear ring (18). The gear (16) meshes with the inner side of the top of the transmission gear ring (17). The output shaft of the first motor (8) is connected to the center of the gear (16) from top to bottom.

4. The sewage ecological purification device for water environment treatment according to claim 3, characterized in that: A mounting positioning ring (6) is fixedly connected to the part of the outer side of the water inlet end body (1) above the mounting plate (19). The gear (16) is connected to the top of the mounting positioning ring (6) by a shaft pin, and the transmission gear ring (17) is movably sleeved on the outer side of the mounting positioning ring (6).

5. The sewage ecological purification device for water environment treatment according to claim 4, characterized in that: A mounting sleeve (7) is installed on the top of the mounting positioning ring (6) by bolts. The mounting sleeve (7) is sleeved on the outer side of the transmission gear ring (17), and the first motor (8) is installed on the top of the first motor (8).

6. The sewage ecological purification device for water environment treatment according to claim 2, characterized in that: A pull rod (9) passing through the sealing circular plate (23) and extending out is installed at the center of the side of the inner cleaning assembly (24) facing away from the impeller (21). A spring (10) is fixedly connected to the extending end of the pull rod (9), and one end of the spring (10) is connected to the outer side of the mounting plate (19) for pulling the inner cleaning assembly (24) out along the axis of the annular filter cartridge (20).

7. The sewage ecological purification device for water environment treatment according to claim 1, characterized in that: The water outlet end body (2) is composed of a flow guiding block (11) and a main pipeline (14) arranged up and down. The flow guiding block (11) is a diamond-shaped structure gradually decreasing from the middle to both ends, and an ecological purification unit with multiple filter beds is arranged on the inner wall of the main pipeline (14). An aeration system is arranged at the bottom of the ecological purification unit, and the aeration system penetrates through multiple filter beds of the ecological purification unit. The ecological purification unit includes a coarse filter bed (27), an adsorption filter bed (28), and a biodegradation filter bed (29) arranged layer by layer from top to bottom. The filler in the coarse filter bed (27) is gravel with a particle size between 20 and 50 mm. The filler in the adsorption filter bed (28) is ceramsite with a particle size between 10 and 20 mm and activated carbon with a particle size between 5 and 10 mm. The filler in the biodegradation filter bed (29) is volcanic rock with a particle size between 5 and 10 mm and porous biological filler, and microorganisms are attached to the surface. The porous biological filler is made of polyethylene or polypropylene.

8. The sewage ecological purification device for water environment treatment according to claim 7, characterized in that: The ecological purification unit includes a coarse filter bed (27), an adsorption filter bed (28), and a biodegradation filter bed (29) arranged layer by layer from top to bottom. The filler in the coarse filter bed (27) is gravel with a particle size between 20 and 50 mm. The filler in the adsorption filter bed (28) is ceramsite with a particle size between 10 and 20 mm and activated carbon with a particle size between 5 and 10 mm. The filler in the biodegradation filter bed (29) is volcanic rock with a particle size between 5 and 10 mm and porous biological filler, and microorganisms are attached to the surface. The porous biological filler is made of polyethylene or polypropylene.

9. The sewage ecological purification device for water environment treatment according to claim 7, characterized in that: The aeration system includes an aeration pipeline (5), a microporous aeration head, and a blower. The aeration pipeline (5) extends into the ecological purification unit from the middle of the bottom of the ecological purification unit, and is in a vortex shape in each layer of the filter bed of the ecological purification unit. The microporous aeration head is installed on the aeration pipeline (5), and one end of the aeration pipeline (5) extends out of the main pipeline (14) and is connected to the blower.

10. The sewage ecological purification device for water environment treatment according to claim 2, wherein: The collecting tank (15) is inclined. A discharge pipe (4) is connected to the lowest part of the collecting tank (15). A spiral feeding assembly (12) extending into the collecting tank (15) is arranged inside the discharge pipe (4). A discharge opening is provided at the bottom of the end of the discharge pipe (4) far away from the collecting tank (15), and a valve is provided at the discharge opening. A second motor (13) on the same central axis as the spiral feeding assembly (12) is installed outside the spiral feeding assembly (12), and the second motor (13) is connected to the spiral feeding assembly (12).

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