CN120553936B - A non-powered, multi-stage gradient purification type on-site treatment device for rural sewage - Google Patents

Abstract

The invention relates to the technical field of sewage treatment and discloses an unpowered multistage gradient purification type rural sewage on-site treatment device which comprises a first shell, wherein a water outlet pipe is fixedly connected to the outer wall of the first shell, a water inlet is formed in one end, far away from the water outlet pipe, of the first shell, a connecting pipe is fixedly connected to the inner wall of the water inlet, a first partition plate is fixedly connected to the inner wall of the first shell, an adsorption filtering device is fixedly connected to the inner wall of the first shell, multistage removal of pollutants is achieved through physical interception, chemical adsorption and biological synergistic effect, a synergistic process system of biochemical treatment and physical and chemical adsorption is innovatively adopted by the device, gradient degradation is formed by each treatment unit, dynamic change of water quality and water quantity of rural sewage can be met, stability of water quality of the discharged water can be guaranteed through impact resistance advantages of a compound process, and adaptability and engineering practicability are shown in a dispersed rural sewage treatment scene.

Description

A non-powered, multi-stage gradient purification type on-site treatment device for rural sewage

Technical Field

This invention relates to the field of wastewater treatment technology, specifically to a non-powered, multi-stage gradient purification type on-site treatment device for rural wastewater.

Background Technology

With the development of the rural economy and changes in lifestyles, the amount of domestic sewage discharged has increased significantly.

Patent application CN201921961900.7 discloses a rural sewage treatment device, which mainly consists of a pretreatment unit and an constructed wetland. The pretreatment unit comprises an equalization tank, a sludge collection tank, and a biological treatment tank. The effluent from the biological treatment tank enters the constructed wetland. Sludge is discharged by gravity using the liquid level difference between the biological treatment tank and the sludge collection tank by periodically opening a sludge discharge valve. The supernatant overflows from the sludge collection tank using the liquid level difference between the sludge collection tank and the equalization tank. The sludge stored in the sludge collection tank is periodically removed by a vacuum truck, solving the problems of high sludge disposal costs and complex facilities in existing rural sewage treatment systems. Simultaneously, as a pretreatment unit for the constructed wetland, it effectively removes pollutants and other substances that easily clog the wetland, extending the wetland's lifespan and achieving better effluent quality.

In practical applications, existing rural domestic sewage treatment equipment generally suffers from limitations in treating only a single type of water quality. It can only handle specific types of sewage such as black water or grey water, lacks the ability to treat mixed water qualities, and is difficult to adapt to the unique situation of fluctuations in water quality and quantity in rural sewage. This results in insufficient resistance to shock loads, and problems such as decreased treatment efficiency and abnormal effluent indicators are prone to occur during periods of sudden changes in water quality or peak water volume, which is not conducive to the stable operation of the facilities.

Summary of the Invention

To address the shortcomings of existing technologies, this invention provides a non-powered, multi-stage gradient purification type on-site treatment device for rural sewage, thereby solving the problems mentioned in the background section.

To achieve the above objectives, the present invention provides the following technical solution: a non-powered multi-stage gradient purification type on-site rural sewage treatment device, comprising a shell, an outlet pipe fixedly connected to the outer wall of the shell, an inlet at the end of the shell away from the outlet pipe, a connecting pipe fixedly connected to the inner wall of the inlet, a partition plate fixedly connected to the inner wall of the shell, an adsorption filtration device fixedly connected to the inner wall of the shell, the outer wall of the adsorption filtration device fixedly connected to the partition plate, an outlet at the outer wall of the partition plate, and a primary filtration mechanism fixedly connected to the end of the connecting pipe away from the shell. This device integrates... The system comprises a primary sedimentation and conditioning zone, an ambient temperature fermentation zone, a high-efficiency anaerobic zone, and a three-stage adsorption and filtration zone, constructing a multi-level gradient unit for pollutant degradation. The primary sedimentation and conditioning zone combines solid-liquid separation with water quality and quantity balancing, buffering influent fluctuations and initially settling suspended solids. The ambient temperature fermentation zone establishes a stable and efficient fermentation environment through the enrichment and dynamic replenishment of specific microbial strains. The high-efficiency anaerobic zone utilizes biomimetic packing material to create a high-concentration sludge reaction zone, enhancing the biodegradation efficiency of pollutants. The three-stage adsorption and filtration zone employs gradient-configured specific packing material to achieve multi-level removal of pollutants through physical interception, chemical adsorption, and biological synergy. The device innovatively adopts a synergistic process system of biochemical treatment + physicochemical adsorption, with each treatment unit forming a gradient degradation process. This not only addresses the dynamic changes in the quality and quantity of rural sewage but also ensures stable effluent quality through the shock resistance advantages of the composite process, demonstrating adaptability and engineering practicality in decentralized rural sewage treatment scenarios.

The primary filtration mechanism includes:

The second outer casing has its outer wall fixedly connected to the connecting pipe, and its top is fixedly connected to a water inlet pipe. The top of the second outer casing has a cleaning port, and the top of the cleaning port is fixedly connected to a cover plate. The outer wall of the second outer casing has a water outlet. The cleaning port facilitates the subsequent cleaning of accumulated materials inside the equipment by the staff.

According to the above technical solution, a partition plate 2 is fixedly connected to the inner wall of the outer shell 1, and an outlet 2 is opened on the outer wall of the partition plate 2. A guide plate is fixedly connected to the inner wall of the outer shell 1, wherein the guide plate is arranged in an S-shape inside the outer shell 1. By setting the guide plate, an S-shaped water flow channel is formed, which optimizes the sewage treatment efficiency, forcibly changes the straight flow trajectory of sewage, and extends its movement path into a reciprocating baffled shape, so that the actual residence time of sewage in the fermentation zone and anaerobic zone is extended. By extending the water flow path, it is ensured that the sewage is in full contact with the specific bacteria in the fermentation zone and the high concentration of sludge bacteria on the surface of the biomimetic packing in the anaerobic zone, thereby enhancing the degradation of organic matter and the removal efficiency of nitrogen and phosphorus. Even during peak water usage periods, the baffled structure formed by the S-shaped guide plate can effectively prevent sewage short-flow phenomenon, ensuring that the sewage obtains sufficient biochemical reaction time in each treatment unit. This solves the problem of incomplete purification that is prone to occur when the water volume fluctuates in traditional equipment, and ensures that the equipment maintains stable pollutant removal efficiency.

According to the above technical solution, a gas collecting pipe is fixedly connected inside the outer shell. A circulation pipe is fixedly connected to the end of the gas collecting pipe away from the outer shell. An exhaust pipe is fixedly connected to the end of the circulation pipe away from the gas collecting pipe. The biogas generated in the anaerobic zone is transported from the gas collecting pipe to the exhaust pipe. By setting up the circulation pipe, the anaerobic biogas collected by the gas collecting pipe is transported to the bottom of the fermentation zone through the circulation pipe. During the rising of the bubbles, the laminar flow state of the sewage can be effectively broken, which promotes the full mixing of the microbial community and pollutants in the fermentation zone. At the same time, the disturbance can prevent sludge deposition, maintain the activity of microorganisms in the fermentation zone, and improve the organic matter removal rate and treatment stability.

According to the above technical solution, an inclined filter screen is fixedly connected to the inner wall of the second outer shell, and an arc-shaped filter screen is fixedly connected to the bottom of the inclined filter screen. The inner wall of the second outer shell is fixedly connected to the arc-shaped filter screen. A notch is opened at the top of the first outer shell, and an auxiliary component is movably connected to the outer wall of the notch. The arc-shaped filter screen and the inclined filter screen are used for preliminary filtration of sewage. By setting the inclined filter screen and the arc-shaped filter screen, the efficient interception of impurities in the influent is achieved. The inclined filter screen design allows impurities in the sewage to automatically slide along the inclined surface under the action of gravity, avoiding the formation of a flat accumulation layer of impurities on the filter screen surface. With the flow guiding structure of the bottom arc-shaped filter screen, the intercepted impurities can be directionally guided to the auxiliary component's collection area. This not only effectively prevents large particles of impurities from clogging the subsequent treatment unit, but also extends the effective filtration cycle of the filter screen and reduces the frequency of manual cleaning. At the same time, the directional flow guiding design of impurities makes subsequent cleaning operations more convenient and efficient, improving the continuous operation capability of the equipment.

According to the above technical solution, an inclined plate is fixedly connected to the inner wall of the second outer shell, a baffle is fixedly connected to the inner wall of the second outer shell, and a sliding groove is opened on the inner wall of the second outer shell. A hollow column is fixedly connected to the top of the sliding groove. The baffle can block the direct flow of liquid, while the baffle at the bottom facilitates the accumulation of sediment. By setting the baffle, an independent physical barrier is formed, forcibly changing the straight flow trajectory of sewage, avoiding the phenomenon that the influent is directly discharged from the outlet without sedimentation treatment. By extending the actual flow path of sewage in the sedimentation zone, sufficient space distance and residence time are provided for the settling of suspended solids. Even during peak water usage periods, the baffle can ensure that sewage obtains the necessary sedimentation time, providing stable influent conditions for subsequent purification units and effectively improving the processing reliability of the equipment under high load conditions.

According to the above technical solution, the inner wall of the chute has a first circular hole, the bottom of the first circular hole has a cavity, the inner wall of the chute has a second circular hole, the second circular hole penetrates the chute and extends to the inner wall of the cavity, and the inner wall of the chute is movably connected with a protruding plate, wherein the protruding plate is used to block sediment.

According to the above technical solution, a notch two is provided on the rear side of the protruding plate, and an elastic component two is fixedly connected to the rear side of the protruding plate. The end of the elastic component two away from the protruding plate is fixedly connected to the sliding groove. The elastic component two facilitates the resetting of the protruding plate. At the same time, a locking hole is provided at the bottom of the protruding plate to facilitate the fixing of the protruding plate. By setting the protruding plate, an independent physical barrier is formed. During peak water usage periods, the blocking surface of the protruding plate effectively intercepts light sediments carried in the water flow, preventing them from directly entering the subsequent purification unit under the impact of the water flow. The bottom of the protruding plate adopts an inclined surface. When the water flow carries sediments and impacts the plate, the inclined surface causes the sediments to form a backflow turbulence at the bottom. Secondary sedimentation is achieved through water flow movement. The structure of the inclined surface and the blocking surface not only prolongs the actual residence time of sewage in the sedimentation zone, but also enhances the collision and agglomeration of particles through the backflow effect. Even under peak water flow conditions, light sediments can be prevented from escaping with the water flow through physical barriers and fluid regulation, providing stable inlet water conditions for the subsequent purification process.

According to the above technical solution, a sliding rod is movably connected to the inner wall of the hollow column, the outer wall of the sliding rod is movably connected to the second round hole, a connecting plate is fixedly connected to the bottom of the sliding rod, a locking head is fixedly connected to the top of the connecting plate, the outer wall of the locking head is movably connected to the first round hole, an elastic component is fixedly connected to the bottom of the connecting plate, and the bottom of the elastic component is fixedly connected to the cavity. The locking head can be embedded in the locking hole at the bottom of the water inlet pipe for locking the protruding plate.

According to the above technical solution, the auxiliary component includes a connecting block, the outer wall of which is movably connected to the outer shell, a connecting plate is fixedly connected to the bottom of the connecting block, an arc-shaped plate is fixedly connected to the bottom of the connecting plate, and a screen is fixedly connected to the inner wall of the arc-shaped plate. The auxiliary component facilitates the removal of impurities accumulated on the inclined filter screen and the arc-shaped filter screen. As a non-powered product, this device requires no electricity, minimal chemical dosing, and only requires periodic inspections, which plays a very positive role in energy conservation, emission reduction, and reducing operation and maintenance costs.

Compared with the prior art, the present invention provides a non-powered multi-stage gradient purification type on-site treatment device for rural sewage, which has the following beneficial effects:

1. This invention integrates a primary sedimentation and conditioning zone, a normal-temperature fermentation zone, a high-efficiency anaerobic zone, and a three-stage adsorption and filtration zone, constructing a multi-level gradient pollutant degradation unit. The primary sedimentation and conditioning zone combines solid-liquid separation with water quality and quantity balancing, buffering influent fluctuations and initially settling suspended solids. The normal-temperature fermentation zone forms a stable and efficient fermentation environment through the enrichment and dynamic replenishment of specific microbial strains. The high-efficiency anaerobic zone uses biomimetic packing to construct a high-concentration sludge reaction zone, enhancing the biodegradation efficiency of pollutants. The three-stage adsorption and filtration zone uses gradient-configured specific packing to achieve multi-level removal of pollutants through physical interception, chemical adsorption, and biological synergy. The device innovatively adopts a synergistic process system of biochemical treatment + physicochemical adsorption, with each treatment unit forming a gradient degradation. This not only addresses the dynamic changes in the quality and quantity of rural sewage but also ensures stable effluent quality through the shock resistance advantages of the composite process, demonstrating adaptability and engineering practicality in decentralized rural sewage treatment scenarios.

2. This invention achieves efficient interception of impurities in incoming water by setting up inclined and arc-shaped filter screens. The inclined filter screen design allows impurities in the sewage to automatically slide along the inclined surface under the action of gravity, avoiding the formation of a flat accumulation layer of impurities on the filter screen surface. Combined with the flow guiding structure of the bottom arc-shaped filter screen, the intercepted impurities can be directionally guided to the auxiliary component storage area. This not only effectively prevents large particles of impurities from clogging subsequent treatment units, but also extends the effective filtration cycle of the filter screen and reduces the frequency of manual cleaning. At the same time, the directional flow guiding design of impurities makes subsequent cleaning operations more convenient and efficient, improving the continuous operation capability of the equipment.

3. This invention, by setting up baffles, forms an independent physical barrier, forcibly changing the straight flow trajectory of sewage, avoiding the phenomenon of influent being discharged directly from the outlet without sedimentation treatment. By extending the actual flow path of sewage in the sedimentation zone, it provides sufficient space and residence time for suspended solids to settle. Even during peak water usage periods, the baffle's barrier effect ensures that sewage obtains the necessary sedimentation time, providing stable influent conditions for subsequent purification units and effectively improving the equipment's processing reliability under high load conditions.

4. This invention, by setting up protruding plates, forms an independent physical barrier. During peak water usage periods, the blocking surface of the protruding plates effectively intercepts light sediments carried in the water flow, preventing them from directly entering the subsequent purification unit under the impact of the water flow. The bottom of the protruding plates adopts an inclined surface. When the water flow carries sediments and impacts the plate, the inclined surface causes the sediments to form a backflow turbulence at the bottom, achieving secondary sedimentation through water flow movement. The structure of the inclined surface and the blocking surface not only prolongs the actual residence time of sewage in the sedimentation zone, but also enhances the collision and agglomeration of particles through the backflow effect. Even under peak water flow conditions, it can prevent light sediments from escaping with the water flow through physical barriers and fluid regulation, providing stable inlet water conditions for the subsequent purification process.

5. This invention optimizes wastewater treatment efficiency by setting up a guide plate to form an S-shaped water flow channel. It forcibly changes the straight flow trajectory of wastewater, extending its movement path into a reciprocating baffled flow pattern. This prolongs the actual residence time of wastewater in the fermentation and anaerobic zones. By extending the water flow path, it ensures that the wastewater fully contacts the specific bacteria in the fermentation zone and the high-concentration sludge bacteria on the surface of the biomimetic packing material in the anaerobic zone, thereby enhancing the degradation of organic matter and the removal efficiency of nitrogen and phosphorus. Even during peak water usage periods, the baffled structure formed by the S-shaped guide plate can effectively prevent wastewater short-circuiting, ensuring that the wastewater obtains sufficient biochemical reaction time in each treatment unit. This solves the problem of incomplete purification that easily occurs in traditional equipment when water volume fluctuates, ensuring that the equipment maintains stable pollutant removal efficiency.

6. By setting up a circulation pipe, the anaerobic biogas collected by the gas collection pipe is transported to the bottom of the fermentation zone through the circulation pipe. During the process of the rising bubbles, the laminar flow state of the sewage can be effectively broken, which promotes the full mixing of microbial flora and pollutants in the fermentation zone. At the same time, the disturbance can prevent sludge deposition, maintain the activity of microorganisms in the fermentation zone, and improve the organic matter removal rate and treatment stability.

Attached Figure Description

The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

Figure 1 is a schematic diagram of the overall structure of the present invention;

Figure 2 is a partial structural cross-sectional view of the present invention;

Figure 3 is a partial structural cross-sectional view of the present invention;

Figure 4 is a schematic diagram of the primary filtration mechanism of the present invention;

Figure 5 is a cross-sectional view of the primary filtration mechanism of the present invention.

Figure 6 is an enlarged view of A in Figure 5 of this invention;

Figure 7 is a second cross-sectional view of the primary filtration mechanism of the present invention;

Figure 8 is an enlarged view of B in Figure 7 of this invention;

Figure 9 is a schematic diagram of the auxiliary components of the present invention;

In the diagram: 1. Outer shell 1; 101. Outlet pipe; 102. Adsorption filtration device; 103. Partition 1; 104. Outlet 1; 105. Partition 2; 106. Outlet 2; 107. Guide plate; 108. Inlet; 109. Air collection pipe; 1010. Circulation pipe; 1011. Exhaust pipe; 1012. Connecting pipe; 2. Primary filtration mechanism; 201. Outer shell 2; 202. Inlet pipe; 203. Cleaning port; 204. Notch 1; 205. Inclined filter screen; 206. Arc-shaped filter screen; 207. Inclined... 208. Inclined plate; 209. Baffle; 2010. Outlet 3; 2011. Hollow column; 2012. Slide groove; 2013. Circular hole 1; 2014. Circular hole 2; 2015. Cavity; 2016. Sliding rod; 2017. Connecting plate 1; 2018. Locking head; 2019. Elastic component 1; 2020. Cover plate; 2021. Protruding plate; 2022. Notch 2; 2023. Elastic component 2; 21. Auxiliary component; 211. Connecting block; 212. Connecting plate 2; 213. Arc plate; 214. Screen.

Detailed Implementation

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

Example 1: Referring to Figures 1-3, the present invention provides a technical solution: a non-powered multi-stage gradient purification type rural sewage on-site treatment device, including an outer shell 1, an outlet pipe 101 fixedly connected to the outer wall of the outer shell 1, an inlet 108 opened at the end of the outer shell 1 away from the outlet pipe 101, a connecting pipe 1012 fixedly connected to the inner wall of the inlet 108, a guide plate 107 and a circulation pipe 1010 are provided to ensure the purification effect of the device, a partition plate 103 is fixedly connected to the inner wall of the outer shell 1, and an adsorption filter device 102 is fixedly connected to the inner wall of the outer shell 1. The outer wall of the filter device 102 is fixedly connected to the partition 103. The outer wall of the partition 103 has an outlet 104. The end of the connecting pipe 1012 away from the outer shell 1 is fixedly connected to the primary filter mechanism 2. The inner wall of the outer shell 1 is fixedly connected to the partition 2 105. The outer wall of the partition 2 105 has an outlet 106. The inner wall of the outer shell 1 is fixedly connected to the guide plate 107, which is arranged in an S-shape inside the outer shell 1. The inside of the outer shell 1 is fixedly connected to the air collecting pipe 109. The end of the air collecting pipe 109 away from the outer shell 1 is fixedly connected to the circulation pipe 10. 10. The end of the circulation pipe 1010 furthest from the gas collection pipe 109 is fixedly connected to the exhaust pipe 1011. Biogas produced in the anaerobic zone is transported from the gas collection pipe 109 to the exhaust pipe 1011. The area in front of the partition 105 is the ambient temperature fermentation zone, and the area behind the partition 105 is the high-efficiency anaerobic zone. When wastewater enters the shell 1, it is first purified in the ambient temperature fermentation zone in front of the partition 105. This zone, through the S-shaped path design of the guide plate 107, extends the hydraulic retention time while promoting the initial decomposition of organic matter by specialized bacteria. Subsequently, the wastewater... Water flows into the high-efficiency anaerobic zone behind the partition plate 105 through outlet 106. This zone achieves deep degradation of pollutants. After anaerobic treatment, the wastewater flows by gravity through outlet 104 to the adsorption filter device 102. The final purification is completed through the adsorption and filtration of the three-stage gradient packing. The qualified water is discharged from the outlet pipe 101. During this process, the biogas generated in the high-efficiency anaerobic zone is collected through the gas collection pipe 109 and transported to the bottom of the ambient temperature fermentation zone through the circulation pipe 1010 and the exhaust pipe 1011. The biogas bubbles form a natural stirring effect as they rise, which enhances the mass transfer efficiency of the ambient temperature fermentation zone.

Example 2: Please refer to Figures 4-9. Based on Example 1, the present invention provides the following technical solution: To ensure that the equipment can ensure the sedimentation of sewage, a primary filtration mechanism 2 is provided. The primary filtration mechanism 2 includes: a second outer shell 201, the outer wall of which is fixedly connected to a connecting pipe 1012; a water inlet pipe 202 fixedly connected to the top of the second outer shell 201; a cleaning port 203 opened at the top of the second outer shell 201; a cover plate 2019 fixedly connected to the top of the cleaning port 203; a third water outlet 209 opened on the outer wall of the second outer shell 201; the cleaning port 203 facilitates subsequent cleaning of the accumulated materials inside the equipment by the staff; and an inclined filter screen fixedly connected to the inner wall of the second outer shell 201. 205. An arc-shaped filter 206 is fixedly connected to the bottom of the inclined filter 205. The inner wall of the outer shell 201 is fixedly connected to the arc-shaped filter 206. A notch 204 is opened at the top of the outer shell 1. An auxiliary component 21 is movably connected to the outer wall of the notch 204. The arc-shaped filter 206 and the inclined filter 205 are used for preliminary filtration of sewage. An inclined plate 207 is fixedly connected to the inner wall of the outer shell 201. A baffle 208 is fixedly connected to the inner wall of the outer shell 201. A groove 2011 is opened on the inner wall of the outer shell 201. A hollow column 2010 is fixedly connected to the top of the groove 2011. The baffle 208 can block the direct flow of liquid, while the bottom baffle 2010... 8. To facilitate the accumulation of sediment, the inner wall of the chute 2011 has a first circular hole 2012, and the bottom of the first circular hole 2012 has a cavity 2014. The inner wall of the chute 2011 also has a second circular hole 2013, which penetrates the chute 2011 and extends to the inner wall of the cavity 2014. A protruding plate 2020 is movably connected to the inner wall of the chute 2011. The protruding plate 2020 is used to block sediment. During the sedimentation operation of sewage, after the sewage enters the outer shell 201 through the inlet pipe 202, it first undergoes preliminary filtration through the inclined filter screen 205 and the arc-shaped filter screen 206. The inclined angle design of the inclined filter screen 205 utilizes gravity to slide, causing the intercepted impurities to slide along the... The inclined plate automatically collects the wastewater into the storage area of the auxiliary component 21, preventing the formation of a buildup layer on the filter screen surface. The filtered wastewater changes its flow direction under the physical obstruction of the baffle 208, forming a flow path that first plunges downward and then turns back forward along the bottom of the inclined plate 207. This design provides sufficient gravity separation space for the settling of suspended solids by extending the actual residence time of the water flow in the sedimentation zone. As the wastewater continues to flow in, the supernatant after sedimentation overflows from the outlet 209 and enters the subsequent treatment unit through the connecting pipe 1012. During this process, the protruding plate 2020 uses its bottom inclined blocking surface to intercept the light sediments carried in the water flow, promoting secondary sedimentation of the sediments and effectively preventing suspended solids from escaping with the effluent.

A notch 2021 is provided on the rear side of the protruding plate 2020. An elastic component 2022 is fixedly connected to the rear side of the protruding plate 2020. The end of the elastic component 2022 away from the protruding plate 2020 is fixedly connected to the slide groove 2011. The elastic component 2022 facilitates the reset of the protruding plate 2020. At the same time, a locking hole is provided at the bottom of the protruding plate 2020 to facilitate the fixation of the protruding plate 2020. A sliding rod 2015 is movably connected to the inner wall of the hollow column 2010. The outer wall of the sliding rod 2015 is movably connected to the round hole 2013. A connecting plate 2016 is fixedly connected to the bottom of the sliding rod 2015. A locking head 2017 is fixedly connected to the top of the connecting plate 2016. The outer wall of the locking head 2017 is movably connected to the round hole 2012. An elastic component 2018 is fixedly connected to the bottom of the connecting plate 2016. The bottom of 018 is fixedly connected to the cavity 2014, wherein the locking head 2017 can be embedded in the locking hole at the bottom of the water inlet pipe 202 for locking the protruding plate 2020. When it is necessary to clean the sediment on the inclined plate 207, first open the top cover 2019, and insert the special cleaning tool into the outer shell 201 through the cleaning port 203. During the lowering process of the tool, the front end touches the protruding plate 2020 to make it slide into the slide groove 2011. At this time, the locking hole at the bottom of the protruding plate 2020 and the locking head 2017 form an embedded locking structure. After the sediment is cleaned, press down the sliding rod 2015 to drive the connecting plate 1 2016 to move down, so that the locking head 2017 disengages from the locking hole of the protruding plate 2020. At this time, the elastic component 2022 releases the stored elastic potential energy and pushes the protruding plate 2020 to automatically reset to the initial blocking position along the slide groove 2011.

The auxiliary component 21 includes a connecting block 211, the outer wall of which is movably connected to the outer casing 201. A connecting plate 212 is fixedly connected to the bottom of the connecting block 211, and an arc-shaped plate 213 is fixedly connected to the bottom of the connecting plate 212. A screen 214 is fixedly connected to the inner wall of the arc-shaped plate 213. The auxiliary component 21 facilitates the removal of impurities accumulated on the inclined filter screen 205 and the arc-shaped filter screen 206. When wastewater is filtered by the inclined filter screen 205, the trapped suspended impurities slide along the inclined surface under the action of gravity and collect at the top of the arc-shaped plate 213. The curved surface design of the arc-shaped plate 213 forms an impurity collection area, preventing impurities from accumulating and clogging the filter screen surface. At the same time, residual wastewater in the impurity layer permeates through the screen 214 and flows into the bottom of the outer casing 201. When it is necessary to clean the impurities, simply hold the connecting block 211 and pull it upwards to drive the auxiliary component 21 to detach from the primary filter mechanism 2 and clean the accumulated impurities.

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.

Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims (5)

1. The utility model provides an unpowered multistage gradient purification type rural sewage on-site processing device, includes shell one (1), the outer wall fixedly connected with outlet pipe (101) of shell one (1), water inlet (108) have been seted up to the one end that outlet pipe (101) were kept away from to shell one (1), the inner wall fixedly connected with connecting pipe (1012) of water inlet (108), a serial communication port, the inner wall fixedly connected with baffle one (103) of shell one (1), the inner wall fixedly connected with of shell one (1) adsorbs filter equipment (102), the outer wall and the baffle one (103) fixedly connected with of adsorption filter equipment (102), delivery port one (104) have been seted up to the outer wall of baffle one (103), the one end that shell one (1) was kept away from to connecting pipe (1012) is fixedly connected with and is strained mechanism (2) just;

the primary filter mechanism (2) comprises:

the device comprises a second shell (201), wherein the outer wall of the second shell (201) is fixedly connected with a connecting pipe (1012), the top of the second shell (201) is fixedly connected with a water inlet pipe (202), the top of the second shell (201) is provided with a sewage cleaning port (203), the top of the sewage cleaning port (203) is fixedly connected with a cover plate (2019), the outer wall of the second shell (201) is provided with a third water outlet (209), and the sewage cleaning port (203) is convenient for staff to clean the accumulated matters in the equipment subsequently;

The inner wall of the second shell (201) is fixedly connected with an inclined plate (207), the inner wall of the second shell (201) is fixedly connected with a baffle plate (208), a chute (2011) is formed in the inner wall of the second shell (201), a hollow column (2010) is fixedly connected to the top of the chute (2011), the baffle plate (208) can block direct flow of liquid, the baffle plate (208) at the bottom is convenient for accumulation of sediment, a round hole I (2012) is formed in the inner wall of the chute (2011), a cavity (2014) is formed in the bottom of the round hole I (2012), a round hole II (2013) is formed in the inner wall of the chute (2011), the round hole II (2013) penetrates through the chute (2011) and extends to the inner wall of the cavity (2014), a protruding plate (2020) is movably connected to the inner wall of the chute (2011), a notch II (2021) is formed in the rear side of the protruding plate (2020) and is used for blocking sediment, a second elastic component 2022 is fixedly connected to the rear side of the protruding plate (2020), a second elastic component 2022 is arranged at the back side of the protruding plate 2020, and one end of the second elastic component 2020 (2020) is conveniently and is conveniently locked with the bottom of the chute (2012) by fixing the protruding plate 2020, the inner wall swing joint of hollow post (2010) has slide bar (2015), the outer wall and the round hole two (2013) swing joint of slide bar (2015), the bottom fixedly connected with connecting plate one (2016) of slide bar (2015), the top fixedly connected with locking head (2017) of connecting plate one (2016), the outer wall and the round hole one (2012) swing joint of locking head (2017), the bottom fixedly connected with elastic component one (2018) of connecting plate one (2016), the bottom and cavity (2014) fixed connection of elastic component one (2018), wherein locking head (2017) can be embedded into the locking hole of water inlet pipe (202) bottom for the locking to protruding board (2020).

2. The unpowered multistage gradient purification type rural sewage on-site treatment device of claim 1, wherein a second partition plate (105) is fixedly connected to the inner wall of the first shell (1), a second water outlet (106) is formed in the outer wall of the second partition plate (105), a guide plate (107) is fixedly connected to the inner wall of the first shell (1), and the guide plate (107) is arranged in an S shape in the first shell (1).

3. The unpowered multistage gradient purification type rural sewage on-site treatment device according to claim 2, wherein a gas collecting tube (109) is fixedly connected to the inside of the first shell (1), a circulating tube (1010) is fixedly connected to one end, away from the first shell (1), of the gas collecting tube (109), an exhaust tube (1011) is fixedly connected to one end, away from the gas collecting tube (109), of the circulating tube (1010), and biogas generated in the anaerobic zone is conveyed to the exhaust tube (1011) from the gas collecting tube (109).

4. The unpowered multistage gradient purification type rural sewage on-site treatment device according to claim 3, wherein an inclined filter screen (205) is fixedly connected to the inner wall of the second shell (201), an arc filter screen (206) is fixedly connected to the bottom of the inclined filter screen (205), the inner wall of the second shell (201) is fixedly connected with the arc filter screen (206), a first notch (204) is formed in the top of the first shell (1), an auxiliary component (21) is movably connected to the outer wall of the first notch (204), and the arc filter screen (206) and the inclined filter screen (205) are used for primarily filtering sewage.

5. The unpowered multistage gradient purification type rural sewage on-site treatment device of claim 4, wherein the auxiliary assembly (21) comprises a connecting block (211), the outer wall of the connecting block (211) is movably connected with a second shell (201), a second connecting plate (212) is fixedly connected to the bottom of the connecting block (211), an arc plate (213) is fixedly connected to the bottom of the second connecting plate (212), a screen (214) is fixedly connected to the inner wall of the arc plate (213), and the auxiliary assembly (21) facilitates removal of impurities accumulated on the inclined filter screen (205) and the arc filter screen (206).