Special system for rural domestic sewage treatment and use method thereof

Abstract

The invention discloses a special system for rural domestic sewage treatment and a use method thereof. The special system comprises a filtering mechanism and a flushing mechanism, the filtering mechanism comprises a water tank, a through groove is formed in the inner bottom wall of the water tank, a filter cone is inserted into the through groove, the bottom of the through groove is communicated with a drainage pipe, and one side of the drainage pipe is communicated with a precipitation mechanism; the flushing mechanism comprises a support and a supporting base fixedly connected to the outer side wall of the water storage tank, and the support is movably sleeved with a sliding block. According to the special sewage treatment system, through the arrangement of the filtering mechanism, the precipitation mechanism and the flushing mechanism, rural domestic sewage can enter a water storage tank after being filtered by a filtering hopper and subjected to subsequent precipitation treatment, and after a water suction pump and a first motor are started, a sliding block can drive a hollow shell to move back and forth on a support; therefore, the spray head can uniformly and effectively wash the pigsty; through the arrangement, the problem that the rural domestic sewage with low pollution degree cannot be effectively recycled and reused in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a special system for treating rural domestic sewage and a method for using the same. Background Art

[0002] Rural domestic sewage treatment removes and degrades harmful substances and environmental pollutants from sewage, rendering them harmless. Rural domestic sewage treatment prioritizes the use of proven, reliable technologies tailored to rural conditions and practical sewage treatment practices. Rural domestic sewage treatment can neutralize water and agricultural products based on specific conditions, achieving reuse and environmentally friendly degradation.

[0003] In remote rural areas, such as mountainous areas, where sewers are not feasible, rural residents typically dig small canals to discharge domestic wastewater, such as laundry and cooking, into nearby rivers. This approach presents numerous problems: First, direct discharge of domestic wastewater pollutes the environment; second, existing technologies lack systematic solutions for effectively recycling and reusing rural domestic wastewater, resulting in a waste of water resources; and third, the small pig pens commonly found in rural areas require regular cleaning, but existing technologies fail to integrate domestic wastewater treatment with the need for pigpen flushing, resulting in inefficient water resource utilization.

[0004] Of particular note, existing rural sewage treatment systems often suffer from the following technical deficiencies: First, they lack a comprehensive system architecture combining decentralized pretreatment with centralized treatment; second, they fail to implement alternating sedimentation tanks and automated sludge removal; and third, they fail to effectively utilize treated reclaimed water for agricultural production, such as pigpen flushing. These issues severely restrict the efficiency and resource utilization of rural domestic sewage treatment. Addressing these issues, existing technologies urgently need improvement. Summary of the Invention

[0005] The purpose of the present invention is to provide a special system for rural domestic sewage treatment to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a special system for rural domestic sewage treatment, comprising: a filtering mechanism, a sedimentation mechanism, and a flushing mechanism; The filtering mechanism comprises a water pool, the inner bottom wall of the water pool is provided with a through groove, a filter hopper is inserted into the interior of the through groove (11), and the bottom of the through groove is connected to a drainage pipe; The sedimentation mechanism includes a water storage tank, a first sedimentation tank, a second sedimentation tank, and a sludge cleaning mechanism respectively provided with the first sedimentation tank and the second sedimentation tank. The water outlet end of the drain pipe is connected to a switching valve with one inlet and two outlets, one water outlet end of the switching valve is connected to the water inlet end of the first sedimentation tank, and the other water outlet end of the switching valve is connected to the water inlet end of the second sedimentation tank. The water storage tank is respectively connected to the water outlet ends of the first sedimentation tank and the second sedimentation tank. The flushing mechanism includes a bracket and a support seat, a slider movably mounted on the bracket, a motor 1 is fixedly mounted on the top of the slider, the output shaft of the motor 1 is fixedly connected to a driving gear, the outer side of the driving gear is meshed with a driven gear, a movable rod is fixedly embedded in the interior of the driven gear, one end of the movable rod is rotatably connected to the slider, a movable plate is fixedly mounted on the movable rod, one side of the movable plate is rotatably connected to a connecting arm, one side of the connecting arm is fixedly connected to a rotating shaft, one end of the rotating shaft is rotatably connected to a connecting plate, one side of the connecting plate is fixedly connected to the bracket, a water pump is fixedly mounted on the top of the support seat, the water outlet of the water pump is connected to a hollow shell through a bellows, the bottom of the hollow shell is evenly connected to a spray head, and one side of the hollow shell is fixedly connected to the slider.

[0007] Furthermore, the present application also proposes that the water inlet of the water pump is connected to a water inlet pipe, and one end of the water inlet pipe extends to the interior of the water tank.

[0008] Furthermore, the present application also proposes that the outer wall of the pool is fixedly connected to a support plate, the interior of the support plate is fixedly embedded with a water outlet pipe, and a valve is fixedly installed on the water outlet pipe.

[0009] Furthermore, the present application also proposes that a slide groove is provided inside the slider, the bracket is slidably connected to the inner wall of the slide groove, and the top of the slider is fixedly connected to the outer casing of motor 1 by screws.

[0010] Furthermore, the present application also proposes that one end of the rotating shaft away from the connecting arm is rotatably connected to the connecting plate through a bearing, and one end of the movable rod is rotatably connected to the slider through a bearing.

[0011] Furthermore, the present application also proposes that the sludge cleaning mechanism includes a sludge pool and a cleaning device, a water inlet and a drain outlet are respectively provided on both sides of the upper part of the sedimentation tank, the drain outlet is connected to a water pump, and the water pump is connected to a water tank, a sludge outlet and a sludge pool are provided at the bottom of the sedimentation tank near the water inlet, a sludge pipe is provided in the sludge pool, the sludge pipe is connected to the sludge outlet, and the sludge outlet is connected to a sludge pump, two groups of sprockets are fixedly installed on the side wall of the sedimentation tank away from the sludge pool, each group of the sprockets is connected to a chain, and a number of groups of scrapers are fixedly installed on the two groups of chains, and a second motor is fixedly installed on the sedimentation tank, and the second motor is connected to the driving wheel in the sprocket through a chain transmission, The cleaning device comprises a high-pressure water pump fixedly installed at the side of the sedimentation tank, the high-pressure water pump is connected to a handheld high-pressure water gun, and a manual valve is fixedly installed on the handheld high-pressure water gun.

[0012] Furthermore, the present application also proposes that the bottom surface of the sedimentation tank connected to the sludge tank is set as an inclined bottom surface, the scraper is set in contact with the bottom surface of the sedimentation tank, and the scraper is made of polyethylene.

[0013] Furthermore, the present application also proposes that a mounting groove is provided on the drain outlet, a filter cartridge is installed on the mounting groove, threaded holes are provided on the mounting groove and the filter cartridge, and fixing bolts are threadedly installed in the threaded holes.

[0014] Furthermore, the present application also proposes that the outside of the sludge pipe is covered with a protective layer, the protective layer is configured as a stainless steel protective plate, and the protective layer is fixed to the sludge pool by bolt threads.

[0015] To achieve the above-mentioned purpose, the present invention further provides the following technical solution: a method for using a dedicated system for rural domestic sewage treatment, according to the dedicated system, the steps are as follows: (1) When in use, the filter bucket filters the domestic sewage entering the pool to remove waste residue; (2) The sewage after preliminary filtration enters the drain pipe through the trough and enters the sedimentation tank 1 through the unified collection pipe. When the sedimentation tank 1 is full, it enters the sedimentation state, and at the same time, the switching valve switches to the sedimentation tank 2 for water storage. When the sedimentation in the sedimentation tank 1 is completed, the precipitated water enters the water storage tank for storage. The sedimentation treatment of domestic sewage is repeated according to step (2); (3) When the pig pen needs to be flushed, the motor 1 and the water pump are started so that the water pump draws the filtered sewage in the water tank into the hollow shell through the bellows; (4) After entering the hollow shell, the water is sprayed out from the nozzle; (5) When the second motor drives the driving gear to rotate, the driven gear drives the movable rod to rotate on the slider under the action of the driving gear; (6) The movable plate drives the connecting arm to rotate under the action of the movable rod, and then the connecting arm drives the rotating shaft to rotate on the connecting plate; (7) The slider slides back and forth on the bracket, so that the hollow shell can drive the nozzle to evenly and effectively flush the ground of the pigpen under the action of the slider; (8) The flushed sewage is connected to the biogas tank through a collection pipe; (9) After the sedimentation tank has been used for a long time, the sludge settles at the bottom of the sedimentation tank and the sludge tank. After the last clear liquid is pumped away, start the second motor, which drives the driving wheel in the sprocket to rotate. The driving wheel drives the driven wheels of other sprockets to rotate through the chain, making the chain do circular motion, so that the scraper installed on the chain scrapes the sludge from the bottom of the sedimentation tank; (10) After scraping, there may still be sludge residue on the bottom and wall of the pool. Start the high-pressure water pump and move the high-pressure water gun to flush the bottom and wall of the pool. Finally, the muddy water is pumped away by the sludge pump to reduce the residual sludge. The protective layer prevents the high-pressure water gun from damaging the sludge pipe during flushing.

[0016] In summary, this application includes at least one of the following beneficial technical effects: This special system for treating rural domestic sewage is equipped with a filtering mechanism and a flushing mechanism, so that the rural domestic sewage can enter the water tank after being filtered by the filter bucket and subsequently subjected to sedimentation treatment. As a result, after the water pump and the motor are started, the slider can drive the hollow shell to move back and forth on the bracket, so that the nozzle can flush the pigpen evenly and effectively. Through the above arrangement, the problem that the existing technology lacks effective recovery and reuse of rural domestic sewage with a low degree of pollution is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a connection diagram of the dedicated system for rural domestic sewage treatment according to the present invention; Figure 2 It is a schematic diagram of the filtering mechanism of the present invention; Figure 3 It is a schematic diagram of a water storage tank of the present invention; Figure 4 It is a schematic diagram of the filtering mechanism of the present invention; Figure 5 This is a schematic diagram of the drain outlet structure of the present invention; Figure 6 This is a schematic diagram of the structure of the drain outlet and filter cylinder of the present invention; Figure 7 Schematic diagram of the flushing mechanism of the present invention Figure 1 ; Figure 8 Schematic diagram of the flushing mechanism of the present invention Figure 2 ; Figure 9 Schematic diagram of the flushing mechanism of the present invention Figure 3 ; Figure 10 for Figure 9 Enlarged schematic diagram of part A in the middle.

[0018] In the figure: 1, filter mechanism; 10, water tank; 11, trough; 12, filter hopper; 13, drain pipe; 14, water storage tank; 15, water pipe; 16, support plate; 17, outlet pipe; 18, valve; 2. Flushing mechanism; 20. Bracket; 21. Water pump; 22. Water inlet pipe; 23. Bellows; 24. Hollow shell; 25. Spray nozzle; 26. Support base; 27. Connecting plate; 28. Rotating shaft; 29. Connecting arm; 201. Movable plate; 202. Slider; 203. Motor 1; 204. Driving gear; 205. Driven gear; 206. Movable rod; 3. Sedimentation mechanism; 31. Sedimentation tank 1; 32. Sedimentation tank 2; 33. Switching valve; 34. Water inlet; 35. Drain outlet; 36. Mud outlet; 37. Sludge tank; 38. Sludge pipe; 39. Sprocket; 40. Chain; 41. Scraper; 42. Motor 2; 43. Mounting slot; 44. Filter cylinder; 45. Threaded hole; 46. Fixing bolt; 47. High-pressure water pump; 48. Protective layer. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] In traditional rural domestic sewage treatment systems, the lack of an effective recycling mechanism for low-pollution domestic sewage prevents the recycling of water resources, resulting in the direct discharge of domestic sewage from washing, cooking, and other sources without adequate treatment. Furthermore, decentralized pigpen flushing needs lack synergy with centralized sewage treatment facilities. Flushing operations rely on independent water sources, resulting in a waste of clean water resources and the failure of flushing wastewater to be included in the treatment system, increasing the environmental burden. These issues lead to low suspended solids separation efficiency, a high risk of sludge accumulation, and low overall system energy efficiency, directly impacting the sustainable operation of the treatment system.

[0021] For example, in a typical mountainous rural scenario, domestic sewage is collected into a simple sedimentation tank through an open ditch. The tank is only equipped with a single-layer filter structure, which cannot intercept fiber impurities. The colloidal particles and dissolved organic matter in the sewage are not fully stratified during the sedimentation stage, resulting in an increased probability of clogging in subsequent treatment units. When the user starts the pigpen flushing operation, an additional clean water source is required. The flushing wastewater is mixed into the domestic sewage pipe network through surface runoff, increasing the fluctuation range of the suspended solids concentration in the pipe. At this time, the sludge settling rate in the sedimentation tank is affected by the impact of the inlet flow, resulting in a short-circuit phenomenon, and the mud at the bottom is hardened and compacted, reducing the effective volume utilization rate.

[0022] If these issues are not addressed, incomplete separation of suspended solids and organic matter will accelerate pipe scaling, shortening operation and maintenance cycles and significantly increasing manual desilting costs. Loss of tank capacity due to sludge compaction will reduce the system's ability to handle peak sewage flows, posing a risk of overflow pollution during rainy seasons. The disconnect between flushing operations and sewage treatment systems will exacerbate the consumption of fresh water resources. Furthermore, untreated flushing wastewater, carrying pathogens, can enter natural water bodies, causing eutrophication and disrupting ecological balance downstream.

[0023] When faced with the above problems, this application first analyzes the contradiction between the low resource utilization rate of domestic sewage and the independent operation of the flushing system. In the traditional model, washing wastewater and pigpen flushing water adopt different treatment paths, resulting in repeated consumption of clean water resources. In this regard, this application attempts to use low-pollution domestic sewage as a flushing water source after pretreatment, and realizes water quality improvement by constructing a multi-stage filtration and alternating sedimentation mechanism. Among them, the decentralized filtration mechanism intercepts large particles of impurities to prevent pipe blockage, and the centralized sedimentation tank maintains continuous processing capacity through dual-tank switching, while the clean water after precipitation is stored in the water tank to form a closed-loop reuse system. By integrating the power module of the flushing mechanism and the spray assembly, the sewage purification and resource utilization links are spatially coupled, and ultimately a technical route combining household pretreatment with centralized deep treatment is formed.

[0024] In this regard, Figures 1 to 10As shown, the present application proposes a special system for rural domestic sewage treatment, including a filtering mechanism 1, a sedimentation mechanism 3, and a flushing mechanism 2; the filtering mechanism 1 includes a pool 10, the inner bottom wall of the pool 10 is provided with a through groove 11, the interior of the through groove 11 is inserted with a filter hopper 12, and the bottom of the through groove 11 is connected to a drain pipe 13. There are multiple filtering mechanisms 1, and they are set up in each household; the sedimentation mechanism 3 includes a water storage tank 14, a sedimentation tank 1, a sedimentation tank 2 32, and a sludge cleaning machine respectively provided in conjunction with the sedimentation tank 1 and the sedimentation tank 2 32. The outlet end of the drain pipe 13 is connected to a switching valve 33 with one inlet and two outlets. One outlet end of the switching valve 33 is connected to the water inlet end of the sedimentation tank 1, and the other outlet end of the switching valve 33 is connected to the water inlet end of the sedimentation tank 2 32. The water storage tank 14 is connected to the outlet ends of the sedimentation tank 1 and the sedimentation tank 2 32 respectively. The sedimentation mechanism 3 is a central unified processing device. The filtering mechanism 1 in each household is connected to a unified collection pipe through the drain pipe 13. The unified collection pipe transports the collected domestic sewage to the sedimentation mechanism 3 for sedimentation treatment; the flushing mechanism 2 includes The bracket 20 and the support seat 26 are movably mounted on the bracket 20 with a slider 202, a motor 203 is fixedly mounted on the top of the slider 202, the output shaft of the motor 203 is fixedly connected to a driving gear 204, the outer side of the driving gear 204 is meshed with a driven gear 205, and a movable rod 206 is fixedly mounted inside the driven gear 205, one end of the movable rod 206 is rotatably connected to the slider 202, a movable plate 201 is fixedly mounted on the movable rod 206, and one side of the movable plate 201 is rotatably connected to a connecting arm 29, and the connecting arm One side of 29 is fixedly connected to a rotating shaft 28, one end of the rotating shaft 28 is rotatably connected to a connecting plate 27, one side of the connecting plate 27 is fixedly connected to the bracket 20, and a water pump 21 is fixedly installed on the top of the support seat 26. The water outlet of the water pump 21 is connected to the hollow shell 24 through a bellows 23, and the bottom of the hollow shell 24 is evenly connected to the nozzle 25. One side of the hollow shell 24 is fixedly connected to the slider 202. The flushing mechanism 2 is installed separately according to the actual pigpen set up in each household, and is uniformly connected to the water tank 14 through a water pipe.

[0025] Among them, the filtering mechanism 1 refers to a device that removes larger solid particles in sewage by physical interception. Specifically, it can be implemented by a water tank 10 structure with a through groove 11 and a filter bucket 12. The bottom of the through groove 11 is connected to a drain pipe 13 to facilitate the discharge of filtered sewage. The sedimentation mechanism 3 refers to a device that uses the principle of gravity sedimentation to separate suspended matter. Specifically, it can be implemented by using a water tank 14 in conjunction with a sedimentation tank 1 and a sedimentation tank 2 32 arranged in parallel, and the water inlet status of the two sedimentation tanks is alternately controlled by a one-in-two-out switching valve 33. The flushing mechanism 2 refers to a cleaning device that controls the spray range through mechanical transmission. Specifically, it can be implemented by a structure in which a motor drives the gear to drive the movable rod 206 to rotate, and cooperates with the water pump 21 to transport the precipitated water to the nozzle 25 to form a flushing water flow.

[0026] The core innovation of this application lies in constructing a three-stage treatment system that combines household pretreatment with centralized sedimentation. Primary solid-liquid separation is achieved through an independent filtration mechanism 1 set up in each household, centralized sludge treatment is achieved through a central sedimentation mechanism 3, and the treated water is reused for pigpen cleaning through a linkage flushing mechanism 2, forming a closed-loop system for sewage collection, treatment, and reuse. At the same time, a dual sedimentation tank alternating operation mode is adopted to ensure treatment continuity.

[0027] The working process and principle of the present application are as follows: the filtering mechanism 1 includes a water pool 10, a through groove 11 is provided on the inner bottom wall of the water pool 10, a filter bucket 12 is inserted into the through groove 11, and the bottom of the through groove 11 is connected to the drain pipe 13. There are multiple filtering mechanisms 1, which are distributed in each household. The sedimentation mechanism 3 includes a water storage tank 14, sedimentation tank 1, sedimentation tank 2 32 and a matching sludge cleaning mechanism. The outlet end of the drain pipe 13 is connected to a one-inlet and two-outlet switching valve 33, and the two outlet ends of the switching valve 33 are respectively connected to the water inlet ends of sedimentation tank 1 and sedimentation tank 2 32. The water storage tank 14 is connected to the outlet ends of the two sedimentation tanks. The sedimentation mechanism 3 serves as a central unified treatment device, which receives domestic sewage discharged from the filtering mechanism 1 of each household through a unified collection pipe.

[0028] The flushing mechanism 2 includes a bracket 20, a support base 26, a slider 202, a motor 203, a driving gear 204, a driven gear 205, a movable rod 206, a movable plate 201, a connecting arm 29, a rotating shaft 28, a connecting plate 27, a water pump 21, a hollow housing 24, and a nozzle 25. The slider 202 is movably mounted on the bracket 20, and the motor 203 is mounted on the top of the slider 202. The output shaft of the motor 203 is connected to the driving gear 204, which meshes with the driven gear 205. The movable rod 206 is embedded in the driven gear 205, and one end of the movable rod 206 is rotatably connected to the slider 202. The movable plate 201 is mounted on the movable rod 206, and the side of the movable plate 201 is connected to the connecting arm 29. The side of the connecting arm 29 is connected to the rotating shaft 28, and one end of the rotating shaft 28 is rotatably connected to the connecting plate 27, which is fixedly connected to the bracket 20. A water pump 21 is mounted on top of support base 26, its outlet connected to hollow housing 24 via bellows 23. The bottom of hollow housing 24 is connected to a nozzle 25, and its sides are fixedly connected to sliders 202. Flushing mechanism 2 is installed individually for each pigpen and connected to water tank 14 via a water pipe.

[0029] During operation, domestic sewage is first filtered through the filter hopper 12 to remove large particles of impurities, and then enters the sedimentation tank through the drain pipe 13 and the unified collection water pipe. The switching valve 33 controls the sewage to enter the sedimentation tank 1 or the sedimentation tank 2 32. The clean water after sedimentation enters the water storage tank 14 for storage. When the pigpen needs to be flushed, start the motor 1 203 and the water pump 21. The water pump 21 pumps the water in the water storage tank 14 to the hollow shell 24 and sprays it out from the nozzle 25. The motor 1 203 drives the gear transmission mechanism to make the slider 202 slide back and forth on the bracket 20, driving the nozzle 25 to evenly flush the pigpen floor.

[0030] This design enables the hierarchical treatment and recycling of domestic sewage. The combination of decentralized filtration and centralized sedimentation improves treatment efficiency. Dual-tank switching for sedimentation ensures continuous treatment capacity. Treated water is used for pigpen flushing, creating a closed-loop reuse system and conserving water resources. The reciprocating motion of flushing mechanism 2 improves flushing effectiveness. The overall solution organically integrates sewage treatment and resource utilization.

[0031] As a preferred embodiment, the solution of this application is specifically implemented as follows: Filter mechanism 1 includes a pool 10 with a circular through-channel 11 defined in the center of the bottom wall. A conical filter hopper 12 is inserted into this channel, with filter holes evenly distributed across its surface. A PVC drain pipe 13 connects to the bottom of this channel. Each household is equipped with one filter mechanism 1.

[0032] Sedimentation mechanism 3 consists of a square water storage tank 14, two rectangular sedimentation tanks, and associated sludge removal mechanisms. A drain pipe 13 is connected to the two sedimentation tank inlets 34 via a three-way valve 18. The water storage tank 14 is connected to the two sedimentation tank outlets via pipes. Sedimentation mechanism 3 serves as a central processing facility, collecting filtered sewage from each household through an underground pipe network.

[0033] The flushing mechanism 2 includes an H-shaped steel bracket 20, a square support seat 26, a rectangular slider 202, a reduction motor, a gear transmission mechanism, a movable rod 206, a movable plate 201, a connecting arm 29, a rotating shaft 28, a connecting plate 27, a centrifugal pump, a cylindrical hollow shell 24 and a plurality of nozzles 25. A slide rail is provided on the bracket 20, and the slider 202 slides on the slide rail. The motor is fixed to the top of the slider 202 and drives the movable rod 206 to rotate through the gear. The movable rod 206 drives the movable plate 201, the connecting arm 29 and the rotating shaft 28 to move, causing the slider 202 to move back and forth. The centrifugal pump is installed on the support seat 26 and is connected to the hollow shell 24 through a hose. A plurality of fan-shaped nozzles 25 are evenly installed at the bottom of the hollow shell 24. The flushing mechanism 2 is customized and installed according to the size of each pigpen and is connected to the water tank 14 through a pipe.

[0034] During use, domestic sewage flows into the pool 10, is filtered through the filter hopper 12, and then enters the drain pipe 13. The sewage enters the sedimentation tank through a unified collection network. The switching valve 33 controls the sewage to enter the vacant sedimentation tank. The clean water after sedimentation is pumped into the water tank 14 for storage. When the pigpen needs to be flushed, the motor and centrifugal pump are started. The centrifugal pump pumps water from the water tank 14 to the hollow shell 24 and sprays it out from the nozzle 25. The motor drives the slider 202 to move back and forth, so that the nozzle 25 evenly flushes the pigpen floor.

[0035] Through the above scheme, this application realizes the hierarchical treatment and recycling of rural domestic sewage. The combination of decentralized filtration and centralized sedimentation improves the efficiency of sewage treatment. The dual-tank switching sedimentation mechanism ensures the continuous treatment capacity of the system. The treated water is used for pigpen flushing, forming a closed-loop reuse system, which effectively saves water resources. The reciprocating motion design of the flushing mechanism 2 improves the flushing uniformity and effect. The overall scheme realizes the organic combination of sewage treatment and resource utilization, and solves the problems of resource waste and environmental pollution in traditional rural domestic sewage treatment.

[0036] In some of the above-mentioned schemes of the present application, the water inlet 34 of the water pump 21 is directly connected to the water tank 14, but there is a lack of clear definition of the connection method of the water inlet 34, which may cause the water pump 21 to be unable to stably obtain the water source in the water tank 14, and the water resources treated by the water tank 14 cannot be effectively exported for reuse.

[0037] The present application further proposes that the water inlet 34 of the water pump 21 is connected to the water inlet pipe 22, one end of the water inlet pipe 22 extends to the interior of the water tank 14, and the side of the water tank 14 away from the drain pipe 13 is fixedly connected to the water supply pipe 15, one end of the water supply pipe 15 is connected to the interior of the water tank 14.

[0038] The water inlet pipe 22 extends into the interior of the water tank 14, ensuring that the pump 21 can steadily draw water from the tank 14. The water delivery pipe 15 is fixedly connected to the side of the tank 14, away from the drain pipe 13, and is used to drain the treated water stored in the tank 14 for subsequent use. Both the water inlet pipe 22 and the water delivery pipe 15 are made of corrosion-resistant materials to prevent damage from prolonged contact with water. The water delivery pipe 15 is strategically positioned to avoid interference with the drain pipe 13, ensuring the independence of the system's water flow paths.

[0039] Specifically, one end of the water inlet pipe 22 extends deep into the water tank 14, allowing the water pump 21 to draw water from the bottom of the water tank 14, preventing the water pump 21 from idling when the water surface fluctuates or the water level drops; the water pipe 15 is fixed to the side wall of the water tank 14, and transports the treated clean water to the irrigation system or reuse facility through gravity or external pressure. When the water pump 21 is started, the clean water in the water tank 14 is pumped to the flushing mechanism 2 through the water inlet pipe 22, realizing the recycling of water resources; the water pipe 15 drains excess clean water to prevent the water tank 14 from overflowing due to excessively high water levels. For example, the water pipe 15 can be connected to a farmland irrigation pipeline, and the treated clean water can be directly used to irrigate crops, further reducing water waste.

[0040] As a preferred embodiment, the solution of this application is specifically implemented as follows: The water inlet 34 of the pump 21 is connected to the water inlet pipe 22, one end of which extends into the interior of the water tank 14. A water delivery pipe 15 is fixedly connected to the side of the water tank 14 away from the drain pipe 13, one end of which is connected to the interior of the water tank 14. The water inlet pipe 22 is made of PVC, has a diameter of 50 mm, and is 2 meters long. One end is connected to the water inlet 34 of the pump 21 via a flange, and the other end extends to the bottom of the water tank 14. The water delivery pipe 15 is made of stainless steel, has a diameter of 80 mm, and is 1.5 meters long. One end is fixedly connected to the side wall of the water tank 14 by welding, and the other end extends to the outside of the water tank 14 and connects to water-using equipment.

[0041] Through the above technical solution, the present application achieves the recycling of water within water tank 14. The water inlet pipe 22 delivers water from the water tank 14 to the pump 21 for use in pigpen flushing. The water delivery pipe 15 then delivers the treated water from the water tank 14 to other water-using equipment for reuse. This design improves water resource utilization efficiency, reduces water waste, and lowers the operating costs of rural domestic sewage treatment systems.

[0042] In some of the aforementioned solutions of this application, the water tank 10, as the core component of the filtration mechanism 1, assumes the important function of initially filtering domestic sewage. However, in actual use, after the filter hopper 12 inside the water tank 10 completes the waste residue filtration, the initially filtered sewage needs to be promptly discharged for subsequent treatment. Because the water tank 10 is directly connected to the drain pipe 13, there is a lack of effective flow control and discharge management mechanisms, which may lead to unstable sewage discharge or the inability to flexibly adjust according to actual needs, affecting overall treatment efficiency.

[0043] The present application further proposes that a support plate 16 is fixedly connected to the outer wall of the pool 10 , a water outlet pipe 17 is fixedly embedded in the interior of the support plate 16 , and a valve 18 is fixedly installed on the water outlet pipe 17 .

[0044] The support plate 16 is rigidly connected to the outer wall of the pool 10 by welding or bolting, ensuring that the support plate 16 can withstand the forces acting on the outlet pipe 17 and the internal fluid. The outlet pipe 17 is a metal pipe with a circular or rectangular cross-section, and its axis is perpendicular or horizontal to the mounting plane of the support plate 16. One end of the outlet pipe 17 extends into the interior of the pool 10 and is aligned with the bottom of the through groove 11, and the other end is connected to the external collection pipe via a flange or threaded interface. The valve 18 uses a manual butterfly valve or an automatic solenoid valve. The inlet end of the valve body is sealed with the outlet end of the outlet pipe 17. The opening and closing state of the valve 18 is adjusted by a handle or a remote control signal to control the on-off and flow rate of the outlet pipe 17.

[0045] Specifically, the support plate 16 serves as a load-bearing structure, and its thickness and size are adapted according to the volume of the pool 10 and the weight of the outlet pipe 17 to ensure that the outlet pipe 17 does not shift or deform during long-term use. When the outlet pipe 17 is embedded in the support plate 16, a pre-buried or post-installed process is adopted to fill the gap with grouting or sealant to prevent sewage from leaking from the connection. When the valve 18 is in the closed state, the sewage in the pool 10 that has been treated by the filter bucket 12 is temporarily stored in the through groove 11 and the drain pipe 13; when the valve 18 is opened, the sewage is discharged in a direction along the outlet pipe 17 to a unified collection pipe or a temporary storage device, thereby achieving controllability of the discharge process. This design, through the coordinated cooperation of the valve 18 and the outlet pipe 17, can not only adjust the sewage discharge rhythm according to the needs of the treatment stage, but also prevent pipe rupture or interface leakage caused by sudden changes in drainage pressure, thereby improving the stability and operational flexibility of the system.

[0046] As a preferred embodiment, the solution of this application is specifically implemented as follows: The outer sidewall of the pool 10 is fixedly connected to a support plate 16. A water outlet pipe 17 is fixedly embedded in the interior of the support plate 16. A valve 18 is fixedly installed on the water outlet pipe 17.

[0047] Specifically, support plate 16 is made of stainless steel and welded to the outer wall of pool 10. Outlet pipe 17 is made of PVC, with a diameter of 50 mm and a length of 500 mm. One end of outlet pipe 17 communicates with the interior of pool 10, while the other end extends outside support plate 16. Valve 18, a ball valve, is installed at the end of outlet pipe 17 that extends beyond support plate 16.

[0048] Through the above-described technical solution, the present application achieves effective control of the water volume in pool 10. Support plate 16 provides stable support for outlet pipe 17, preventing damage from external forces. Outlet pipe 17 facilitates the discharge of water from pool 10, facilitating cleaning and maintenance. Valve 18 controls the opening and closing of outlet pipe 17, flexibly adjusting the drainage rate and water volume. This simple, practical, and easy-to-operate structure facilitates the daily use and management of pool 10.

[0049] In some of the above-mentioned schemes of the present application, during the operation of the flushing mechanism 2, the sliding connection between the slider 202 and the bracket 20 may cause poor movement or deviation due to structural instability, affecting the flushing effect of the nozzle 25. At the same time, if the installation method of the motor is not firm enough, it may become loose due to long-term vibration, affecting the service life of the equipment.

[0050] The present application further proposes that a slide groove is provided inside the slider 202, the bracket 20 is slidably connected to the inner wall of the slide groove, and the top of the slider 202 is fixedly connected to the outer shell of the motor 1 203 by screws.

[0051] A chute is defined within slider 202, its inner wall forming a sliding fit with bracket 20, ensuring that bracket 20 moves in a directional manner within the chute and preventing deviation. Screws rigidly secure the housing of motor 1 203 to the top of slider 202, preventing the motor from vibrating and falling off during operation. The chute's depth and width match the dimensions of bracket 20, further ensuring smooth sliding. For example, the clearance between the chute's inner wall and bracket 20 is controlled within a range of 0.5-1 mm, allowing for smooth sliding while preventing excessive shaking.

[0052] Specifically, after the bracket 20 is inserted into the chute, the two are connected by a sliding connection to limit lateral displacement, and only movement along the length of the chute is allowed, thereby ensuring that the movement trajectory of the slider 202 is consistent with the extension direction of the bracket 20. When the motor 1 203 is started, the active gear 204 drives the driven gear 205 to rotate the movable rod 206, and the movable plate 201 pushes the slider 202 to slide along the bracket 20 through the connecting arm 29. At this time, the wrapping structure of the chute on the bracket 20 can offset the lateral force generated by the rotation of the movable rod 206, thereby preventing the slider 202 from deflecting during movement. At the same time, the motor 1 203 is fixed to the top of the slider 202 by screws, so that the motor and the slider 202 form an integral structure, enhance the connection strength, and prevent the screws from loosening or the motor from being displaced due to vibration. For example, the screws are standard parts of M6 specifications and are tightened with a torque of 3-5 Nm, which can meet the fixing requirements and facilitate later maintenance and disassembly.

[0053] As a preferred embodiment, the solution of the present application is specifically implemented as follows: a chute is defined within the slider 202, the bracket 20 is slidably connected to the inner wall of the chute, and the top of the slider 202 is fixedly connected to the housing of the motor 1 203 via screws. The chute can be designed with a rectangular cross-section and a smooth inner wall. The bracket 20 can be made of stainless steel with a polished surface to reduce friction. The screws are M6 cross-recessed pan head screws, four in number, evenly distributed at the four corners of the housing of the motor 1 203. This connection method is highly reliable and easy to disassemble and maintain.

[0054] Through the above-described technical solution, the present application achieves a stable sliding connection between slider 202 and bracket 20, ensuring the smooth reciprocating motion of slider 202 on bracket 20. Furthermore, the use of screws to securely connect slider 202 to motor 1 203 enhances the robustness of the overall structure and prevents loosening during operation. This design simplifies the assembly process, improves production efficiency, and facilitates subsequent maintenance and component replacement.

[0055] In some of the above-mentioned solutions of the present application, the rotating shaft 28 and the movable rod 206 may cause mechanical wear due to friction during the connection process, affecting the movement flexibility and service life of the flushing mechanism 2.

[0056] The present application further proposes that one end of the rotating shaft 28 away from the connecting arm 29 is rotatably connected to the connecting plate 27 via a bearing, and one end of the movable rod 206 is rotatably connected to the slider 202 via a bearing.

[0057] The rotating shaft 28 and connecting plate 27 are connected by bearings, while the movable rod 206 and slider 202 are connected by bearings. Bearings are mounted at the ends of the rotating shaft 28 and movable rod 206, embedded in fixed locations on the connecting plate 27 and slider 202, respectively. The bearing mounting points on the rotating shaft 28 and connecting plate 27 form a rotational support point, while the bearing mounting points on the movable rod 206 and slider 202 form another rotational support point. The inner ring of the bearing has an interference fit with the shaft end of the rotating shaft 28 or movable rod 206, while the outer ring has an interference fit with the mounting hole of the connecting plate 27 or slider 202.

[0058] Specifically, when the motor drives the active gear 204 to drive the driven gear 205 to rotate, the movable rod 206 rotates synchronously with the driven gear 205. The movable rod 206 realizes low-resistance rotation inside the slider 202 through the bearing, and the slider 202 slides back and forth along the bracket 20. The rotating shaft 28 forms a stable rotating fulcrum on the connecting plate 27 through the bearing, so that the connecting arm 29 drives the rotating shaft 28 to swing under the drive of the movable plate 201. The rolling structure of the bearing reduces the sliding friction between the rotating shaft 28 and the connecting plate 27, and the movable rod 206 and the slider 202, avoiding wear caused by direct contact between metal parts. The dual-bearing configuration of the rotating shaft 28 and the movable rod 206 forms two independent rotational degrees of freedom, ensuring smooth transmission of force during the swinging of the connecting arm 29. When the water pump 21 drives the nozzle 25 to perform pigpen flushing operations, this structure can withstand the periodic load generated by the reaction force of the water flow, maintaining the long-term stable operation of the motion mechanism. As a preferred embodiment, the solution of the present application is specifically implemented as follows: the end of the rotating shaft 28 away from the connecting arm 29 is rotatably connected to the connecting plate 27 via a bearing, and one end of the movable rod 206 is rotatably connected to the slider 202 via a bearing. Specifically, one end of the rotating shaft 28 is provided with a cylindrical protrusion, which is inserted into a circular hole reserved in the connecting plate 27. A bearing is installed between the protrusion and the hole, allowing the rotating shaft 28 to rotate freely on the connecting plate 27. Similarly, one end of the movable rod 206 is also provided with a cylindrical protrusion, which is inserted into the circular hole in the slider 202, and a bearing is installed between the two. This design allows the movable rod 206 to rotate on the slider 202 while maintaining a stable connection.

[0059] Through the above technical solution, the present application achieves flexible rotation between the rotating shaft 28 and the connecting plate 27, as well as flexible rotation between the movable rod 206 and the slider 202. As a result, the entire mechanism can move more smoothly, reducing friction and wear between the various components. Furthermore, this design improves the operating efficiency and stability of the entire flushing mechanism 2, allowing the nozzle 25 to flush the pigpen floor more evenly. At the same time, the use of bearing connection reduces wear between the various components, extending the service life of the entire mechanism.

[0060] In some of the above-mentioned solutions of the present application, when the sludge settles at the bottom of the sedimentation tank, conventional cleaning methods are difficult to completely remove the residual sludge at the bottom of the tank, and the residual sludge can easily cause pollution to the subsequent sewage treatment process. At the same time, there may be problems with impurities entering the water pump at the sedimentation tank drain outlet 35, causing equipment damage.

[0061] The present application further proposes a sludge cleaning mechanism including a sludge pool 37 and a cleaning device, a water inlet 34 and a drain outlet 35 are respectively provided on both sides of the upper part of the sedimentation tank, the drain outlet 35 is connected to a water pump, and the water pump is connected to the water tank 14, a sludge outlet 36 and a sludge pool 37 are provided at the bottom of the sedimentation tank near the water inlet 34, a sludge pipe 38 is provided in the sludge pool 37, the sludge pipe 38 is connected to the sludge outlet 36, and the sludge outlet 36 is connected to a sludge pump, and two sets of sprockets 39 are fixedly installed on the side wall of the sedimentation tank away from the sludge pool 37, each set of sprockets 39 is connected to a chain 40, and the two sets of chains 40 are fixed Several groups of scrapers 41 are installed, and a motor 2 42 is fixedly installed on the sedimentation tank. The motor 2 42 is connected to the driving wheel in the sprocket 39 through a chain 40. The sprocket 39 and the chain 40 are fixedly installed on the wall of the sedimentation tank through a bracket 20 to maintain stability. The sprocket 39 and the chain 40 are made of 304 stainless steel, which has good corrosion resistance, high temperature resistance, low temperature resistance and wear resistance, so that the device has a long service life; the cleaning device includes a high-pressure water pump 47 fixedly installed on the side of the sedimentation tank, and the high-pressure water pump 47 is connected to a hand-held high-pressure water gun, and a manual valve 18 is fixedly installed on the hand-held high-pressure water gun.

[0062] Among them, the sprocket 39 and the chain 40 are made of 304 stainless steel, and their surfaces are polished to withstand long-term operation in acidic and alkaline environments; the scraper 41 is set to polyethylene material, and the part in contact with the bottom of the sedimentation tank is designed to have a wavy edge to enhance the scraping effect; the filter cylinder 44 is installed in the installation groove 43 of the drain outlet 35 through the fixing bolt 46, and the mesh diameter of the filter cylinder 44 is controlled between 0.5-1mm; the water outlet pressure of the high-pressure water gun is set to 5-8MPa, and the gun head adopts a copper rotatable nozzle 25, and the spray angle can be adjusted to 30°-90°.

[0063] Specifically, when the sedimentation tank completes sewage sedimentation, the motor 2 42 drives the sprocket 39 to drive the chain 40 to circulate, and the scraper 41 on the chain 40 moves along the inclined bottom of the tank, pushing the deposited sludge to the sludge outlet 36. The sludge enters the sludge tank 37 through the sludge pipe 38 for temporary storage, and is then pumped out by the sludge pump. During this process, the filter cylinder 44 intercepts solid particles that may exist at the drain outlet 35 to prevent them from entering the water pump and causing blockage. After the sludge scraping operation is completed, the high-pressure water pump 47 is started, and a handheld high-pressure water gun is used to perform a directional flushing of the tank bottom and tank wall. The residual sludge is discharged with the water through the sludge outlet 36. The sprocket 39 and chain 40 made of 304 stainless steel can avoid sewage corrosion, the polyethylene scraper 41 can reduce friction loss with the tank bottom, and the threaded fixing method of the filter cylinder 44 is convenient for disassembly and cleaning. The copper nozzle 25 of the high-pressure water gun can adjust the spray angle according to the tank body structure to ensure that the flushing range covers the entire inner wall of the sedimentation tank.

[0064] As a preferred embodiment, the solution of this application is specifically implemented as follows: The sludge cleaning mechanism includes a sludge tank 37 and a cleaning device. A water inlet 34 and a drain 35 are respectively provided on both sides of the upper part of the sedimentation tank. The drain 35 is connected to a water pump, which is connected to the water tank 14. A sludge outlet 36 and a sludge tank 37 are provided at the bottom of the sedimentation tank near the water inlet 34. A sludge pipe 38 is provided in the sludge tank 37, and the sludge pipe 38 is connected to the sludge outlet 36. The sludge outlet 36 is connected to the sludge pump. Two sets of sprockets 39 are fixedly installed on the side wall of the sedimentation tank away from the sludge tank 37. Each set of sprockets 39 is connected to a chain 40, and a number of scrapers 41 are fixedly installed on the two sets of chains 40. A second motor 42 is fixedly installed on the sedimentation tank, and the second motor 42 is connected to the driving wheel of the sprocket 39 through the chain 40. The sprocket 39 and the chain 40 are fixedly mounted on the wall of the sedimentation tank by the bracket 20 to maintain stability. The sprocket 39 and the chain 40 are made of 304 stainless steel, which has good corrosion resistance, high temperature resistance, low temperature resistance and wear resistance, so that the device has a long service life.

[0065] The cleaning device includes a high-pressure water pump 47 fixedly installed at the side of the sedimentation tank. The high-pressure water pump 47 is connected to a handheld high-pressure water gun, and a manual valve 18 is fixedly installed on the handheld high-pressure water gun.

[0066] Furthermore, the bottom surface of the sedimentation tank connected to the sludge tank 37 is set as an inclined bottom surface, and the scraper 41 is set in contact with the bottom surface of the sedimentation tank, and the scraper 41 is made of polyethylene.

[0067] Specifically, a mounting groove 43 is provided on the drain outlet 35, a filter cartridge 44 is installed on the mounting groove 43, threaded holes 45 are provided on the mounting groove 43 and the filter cartridge 44, and fixing bolts 46 are threadedly installed in the threaded holes 45. Sewage is discharged into the sedimentation tank through the water inlet 34 for sedimentation. After sedimentation, the clear upper layer of water is pumped out of the sedimentation tank by a water pump. Because impurities may remain in the upper layer of clear water and may enter the water pump along with the clean water and cause damage to the water pump, a filter cartridge 44 is installed on the drain outlet 35. To facilitate the cleaning and replacement of the filter cartridge 44, a mounting groove 43 is provided on the drain outlet 35, and the filter cartridge 44 is sleeved on the mounting groove 43. During installation, the threaded holes 45 on the filter cartridge 44 are aligned with the threaded holes 45 on the mounting groove 43, and then fixed by fixing bolts 46. The fixing bolts 46 and the filter cartridge 44 are made of stainless steel in the same frame to prevent the fixing bolts 46 and the filter cartridge 44 from rusting and corroding, thereby reducing the service life of the components.

[0068] For example, the sludge pipe 38 is covered with a protective layer 48 on the outside. The protective layer 48 is set as a stainless steel protective plate. The protective layer 48 is fixed to the sludge pool 37 by bolt threads.

[0069] Through the above-described technical solution, the present application achieves automatic and efficient cleaning of sludge in the sedimentation tank. This reduces the labor intensity of manual sludge cleaning and improves cleaning efficiency. Furthermore, the provision of a filter cartridge 44 prevents impurities from entering the water pump, extending the pump's service life. Furthermore, the use of stainless steel for the sprocket 39, chain 40, and protective layer 48 enhances the device's corrosion resistance and service life.

[0070] In some of the above-mentioned schemes of the present application, the sludge cleaning mechanism drives the scraper 41 through the sprocket 39 and chain 40 to remove the sludge at the bottom of the sedimentation tank. However, during actual use, there may be sludge residue at the bottom of the sedimentation tank, and there is friction loss between the contact surface between the scraper 41 and the bottom of the tank, which affects the scraping effect and service life.

[0071] The present application further proposes that the bottom surface of the sedimentation tank connected to the sludge tank 37 is set to be an inclined bottom surface, and the scraper 41 is set in contact with the bottom surface of the sedimentation tank, and the scraper 41 is a scraper 41 made of polyethylene.

[0072] Among them, the inclined bottom surface design allows the sludge to slide naturally toward the sludge discharge port 36 under the action of gravity, reducing sludge accumulation; the scraper 41 fits tightly against the bottom of the pool, ensuring that the residual sludge on the bottom of the pool is completely removed during the scraping process; the polyethylene material is corrosion-resistant and has a low friction coefficient, reducing the wear of the scraper 41 when it contacts the bottom of the pool.

[0073] Specifically, the slope of the inclined bottom surface is set to 5° to 15° according to the sludge flow characteristics, and the scraper 41 is driven by the chain 40 to move along the inclined bottom surface, pushing the sludge to the sludge outlet 36. The polyethylene scraper 41 contacts the bottom of the pool during movement, and its smooth surface reduces friction resistance while avoiding material deformation caused by sewage corrosion. Furthermore, the scraper 41 cooperates with the sprocket 39 chain 40 transmission mechanism, and moves in a circular motion along the inclined bottom surface under the drive of the motor 2 42, continuously removing the sludge at the bottom of the sedimentation tank. Therefore, the combined design of the inclined bottom surface and the polyethylene scraper 41 improves the sludge cleaning efficiency and extends the service life of the scraper 41, adapting to the working conditions of rural sewage treatment systems with complex sludge composition and high cleaning frequency.

[0074] As a preferred embodiment, the solution of the present application is specifically implemented as follows: the bottom surface of the sedimentation tank connected to the sludge tank 37 is set to an inclined bottom surface, the scraper 41 is set in contact with the bottom surface of the sedimentation tank, and the scraper 41 is a scraper 41 made of polyethylene. Specifically, the bottom surface of the sedimentation tank near the sludge tank 37 is set to an inclined angle of 15 degrees to facilitate the sludge to converge in the direction of the sludge tank 37. The scraper 41 is made of high-density polyethylene material with a thickness of 10 mm, a width the same as the width of the bottom surface of the sedimentation tank, and a length of 1 / 3 of the length of the bottom surface of the sedimentation tank. A rubber scraping strip is provided at the bottom of the scraper 41, which fits tightly against the bottom surface of the sedimentation tank. The scraper 41 is fixedly connected to the chain 40 through a stainless steel connector to ensure that the scraper 41 can move close to the bottom surface of the sedimentation tank during the scraping process.

[0075] Through the above technical solution, the present application achieves the goal of efficiently removing sludge from the bottom of the sedimentation tank. The inclined bottom design allows the sludge to naturally converge in the direction of the sludge pool 37, reducing the difficulty of scraping. The polyethylene scraper 41 has good corrosion resistance and flexibility, and can adapt to the slight unevenness of the bottom of the sedimentation tank, thereby improving the scraping effect. The close fit of the scraper 41 to the bottom of the sedimentation tank ensures thorough scraping and avoids sludge residue. This design greatly improves the cleaning efficiency of the sedimentation tank, extends the service life of the equipment, and reduces maintenance costs.

[0076] In some of the aforementioned solutions of this application, when the water pump at the sedimentation tank outlet 35 extracts the upper layer of clean water, residual impurities may enter the water pump along with the clean water, causing wear on the pump impeller or sealing components, thereby shortening the service life of the water pump. The fixed filter screens used in the prior art are difficult to remove and clean, and after long-term use, impurity accumulation can easily cause filter blockage, affecting drainage efficiency.

[0077] The present application further proposes that the drain outlet 35 is provided with a mounting groove 43, a filter cylinder 44 is installed on the mounting groove 43, threaded holes 45 are provided on the mounting groove 43 and the filter cylinder 44, and a fixing bolt 46 is threadedly installed in the threaded hole 45. The fixing bolt 46 and the filter cylinder 44 are made of stainless steel.

[0078] The mounting groove 43 and the end of the drain outlet 35 form an annular slot structure, and the outer wall of the end of the filter cartridge 44 forms a clearance fit with the inner wall of the mounting groove 43. Threaded holes 45 are evenly distributed along the circumference of the mounting groove 43 and the flange end face of the filter cartridge 44, forming at least three fixing points. The head of the fixing bolt 46 is provided with a cross-slot structure, and the bolt shank is galvanized. The filter cartridge 44 utilizes a double-layer stainless steel mesh structure, with an inner mesh diameter of 1.2 mm and an outer mesh diameter of 3 mm, with a spacing of 5 mm between the two layers.

[0079] Specifically, during installation, insert the filter cylinder 44 into the installation groove 43 so that the flange end face is aligned with the end face of the installation groove 43. After the operator visually aligns the threaded hole 45, screw in the fixing bolt 46 until the flange end face is tightly fitted with the installation groove 43. When clean water flows through the drain outlet 35, it first passes through the outer filter screen to intercept larger particles, and then passes through the inner filter screen to block fine impurities. When the filter cylinder 44 needs to be cleaned, use a screwdriver to unscrew the fixing bolt 46, and pull out the filter cylinder 44 as a whole for reverse flushing. The double-layer filter structure can reduce the probability of clogging of the single-layer filter, and the circumferentially distributed fixing bolts 46 ensure sealing. The stainless steel material prevents rust from polluting the water quality, the galvanized bolts enhance corrosion resistance, and the flange end face contact design facilitates quick positioning and installation.

[0080] As a preferred embodiment, the solution of the present application is specifically implemented as follows: an annular mounting groove 43 is provided at the edge of the drain outlet 35, the axial depth of the mounting groove 43 is 10 mm, and the inner diameter of the annular mounting groove 43 matches the outer diameter of the drain outlet 35. The open end of the cylindrical filter cylinder 44 is provided with an outwardly folded annular flange, the outer diameter of the annular flange being equal to the outer diameter of the annular mounting groove 43. During installation, the annular flange is embedded in the annular mounting groove 43, at which point the cylinder body of the filter cylinder 44 completely covers the inner cavity of the drain outlet 35. Six through holes are equidistantly provided on the annular flange along the circumference, and threaded blind holes are provided at corresponding positions of the annular mounting groove 43. The fixing bolts 46 are sequentially passed through the through holes of the annular flange and screwed into the threaded blind holes, and the filter cylinder 44 is fastened to the drain outlet 35 by six sets of M6 stainless steel bolts. When the filter needs to be cleaned, the filter cylinder 44 can be removed as a whole for flushing or replacement by removing the fixing bolts 46.

[0081] Through the above technical solution, this application effectively prevents impurities remaining in the upper layer of clear water in the sedimentation tank from entering the water pump and causing wear on the impeller. The detachable filter cartridge 44 structure enables rapid maintenance. The stainless steel fixing components avoid the rust problem that traditional iron parts may suffer in sewage environments, ensure the long-term sealing performance of the filter installation structure, and extend the overall service life of the drain outlet 35 assembly.

[0082] In some of the above-mentioned solutions of the present application, the filter cartridge 44 at the drain outlet 35 is prone to rust and corrosion when exposed to sewage environment for a long time, resulting in a shortened service life of the components, requiring frequent replacement of the filter cartridge 44, and increasing maintenance costs.

[0083] The present application further proposes that a mounting groove 43 is provided on the drain outlet 35, a filter cylinder 44 is installed on the mounting groove 43, threaded holes 45 are provided on the mounting groove 43 and the filter cylinder 44, a fixing bolt 46 is threadedly installed in the threaded hole 45, and the fixing bolt 46 and the filter cylinder 44 are both made of stainless steel.

[0084] The mounting groove 43 is constructed as an annular groove structure surrounding the outer wall of the drain outlet 35. The outer wall of the filter cartridge 44 forms a clearance fit with the inner wall of the mounting groove 43. The bottom end of the filter cartridge 44 extends into the interior of the drain outlet 35, and the top end is turned outward to form a flange edge. The flange edge is crimped and fixed to the top surface of the mounting groove 43 by fixing bolts 46. An elastic sealing gasket is provided between the head of the fixing bolt 46 and the flange edge, and an annular sealing strip is provided on the contact surface between the flange edge and the mounting groove 43. The surface of the stainless steel filter cartridge 44 is sandblasted to increase the surface roughness, and its mesh diameter is controlled within the range of 1-2 mm.

[0085] Specifically, the filter cartridge 44 is mounted in the mounting groove 43 outside the drain outlet 35, with the flange edge covering the top surface of the mounting groove 43. The operator aligns the threaded hole 45 of the filter cartridge 44 with the threaded hole 45 of the mounting groove 43 and screws in the fixing bolt 46. The elastic sealing gasket is squeezed and deformed by the bolt head to form a radial seal. When the water pump extracts clean water from the upper layer of the sedimentation tank, impurities carried by the water flow are intercepted by the filter cartridge 44. The stainless steel material prevents the components from degrading the structural strength due to corrosion, and the surface sandblasting slows down the speed at which impurities adhere to the filter surface. When the filter cartridge 44 needs to be cleaned or replaced, it is only necessary to unscrew the fixing bolt 46 to remove the filter cartridge 44 as a whole. During operation, there is no need to disassemble the drain outlet 35 or the water pump body. The sealing strip between the flange edge and the mounting groove 43 prevents sewage from leaking from the contact surface.

[0086] As a preferred embodiment, the solution of this application is implemented as follows: The surface of the sludge pipe 38 is covered with a protective layer 48 formed by several pieces of 304 stainless steel plates. Each stainless steel plate has mounting holes at its edge. The protective layer 48 is connected to the threaded holes 45 in the side wall of the sludge tank 37 via hexagonal bolts. The joints between the stainless steel plates are sealed with sealing strips. An annular fixing seat is installed at the connection between the sludge pipe 38 and the sludge pump outlet flange. The fixing seat is fastened to the bottom surface of the sludge tank 37 via countersunk bolts. The protective layer 48 completely covers the exposed portion of the sludge pipe 38, leaving only a removable inspection port in the area of the sludge pump operation panel.

[0087] Through the above-mentioned technical solution, the present application effectively blocks the mechanical impact caused by the high-pressure water flow on the surface of the sludge pipe 38, preventing metal fatigue fracture caused by pipe vibration during sludge pumping. At the same time, the stainless steel protective layer 48 and the bolted fixing structure form a dual corrosion protection barrier, significantly extending the maintenance cycle of the sludge conveying system. When the sludge pipe 38 needs to be repaired or replaced, the protective layer 48 can be modularly disassembled and assembled by removing the bolts in specific locations, avoiding damage to the overall structural stability.

[0088] In some of the above-mentioned solutions of the present application, it is difficult to completely remove the residual sludge on the bottom and wall of the sedimentation tank after long-term use. The residual sludge may cause secondary pollution and reduce the efficiency of subsequent sewage treatment.

[0089] The present application further proposes a method comprising the following steps: after the sedimentation tank has been used for a long time, sludge settles at the bottom of the sedimentation tank and the sludge tank 37; after the last clear liquid is pumped out, the motor 2 42 is started; the motor 2 42 drives the driving wheel in the sprocket 39 to rotate; the driving wheel drives the driven wheels of the other sprockets 39 to rotate through the chain 40, so that the chain 40 performs a circular motion, thereby causing the scraper 41 installed on the chain 40 to scrape the sludge from the bottom of the sedimentation tank; after the scraping is completed, there may still be sludge remaining on the bottom and wall of the tank; the high-pressure water pump 47 is started, and the high-pressure water gun is moved to flush the bottom and wall of the tank; finally, the muddy water is pumped out by the sludge pump to reduce the residual sludge; the protective layer 48 prevents the high-pressure water gun from damaging the sludge pipe 38 during flushing.

[0090] Among them, the circular motion of the chain 40 is realized by the motor 2 42 driving the sprocket 39, and the scraper 41 is fixed on the chain 40. When the chain 40 moves, it scrapes the sludge close to the inclined bottom surface of the sedimentation tank; the high-pressure water gun controls the flushing intensity through the manual valve 18, and the muddy water flushing the residual sludge is pumped out through the sludge pipe 38 by the sludge pump; the protective layer 48 is composed of a stainless steel plate, which is fixed to the surface of the sludge tank 37 by bolts and covers the outer wall of the sludge pipe 38.

[0091] Specifically, after the sedimentation tank completes the sedimentation process, the clear liquid is extracted. At this time, the motor 2 42 drives the sprocket 39 to drive the chain 40 to circulate. The polyethylene scraper 41 on the chain 40 moves along the inclined tank bottom, pushing the sludge into the sludge outlet 36. After the scraping is completed, when the residual sludge adheres to the tank wall, the high-pressure water pump 47 extracts clean water to generate a high-pressure water flow, and the tank wall is directionally flushed by a handheld water gun. The water flow pressure is controlled within the range of 2.5-3.0MPa to ensure that the sludge is peeled off but does not cause damage to the tank body. The mud-water mixture after flushing is discharged into the sludge tank 37 through the sludge pipe 38 through the sludge pump. During the process, the stainless steel protective layer 48 isolates the impact of the high-pressure water flow on the sludge pipe 38. This process combines mechanical scraping with high-pressure flushing to achieve thorough cleaning of the sludge in the sedimentation tank, prevent the treatment efficiency from decreasing due to sludge compaction, and at the same time, the protective layer 48 prevents the pipeline from being damaged by external force impact, thereby extending the service life of the sludge conveying system.

[0092] As a preferred embodiment, the solution of the present application is specifically implemented as follows: the method for using the domestic sewage treatment system includes the following steps: after the water pool 10 of the filter mechanism 1 receives domestic sewage, the filter bucket 12 intercepts solid waste residue, and the sewage enters the drain pipe 13 through the through groove 11 and is transported to the sedimentation tank 1 by the unified collection pipe; when the sedimentation tank 1 reaches the full water level, the switching valve 33 guides the sewage into the sedimentation tank 2 32, and after the sewage in the sedimentation tank 1 is allowed to stand, the upper layer of clean water is pumped to the water storage tank 14 for storage by the water pump; when the pigpen is flushed, the water pump 21 draws clean water from the water storage tank 14 and transports it to the hollow shell 24 through the bellows 23, The motor drives the driving gear 204 to rotate the driven gear 205, and the movable rod 206 pushes the connecting arm 29 to swing, so that the slider 202 slides back and forth along the bracket 20, and the nozzle 25 moves with the hollow shell 24 and evenly sprays and flushes the ground; the flushing sewage is discharged into the biogas tank through the collection pipe; the sludge at the bottom of the sedimentation tank is driven by the motor 2 42 to drive the sprocket 39 chain 40 mechanism, so that the scraper 41 scrapes the sludge along the inclined tank bottom into the sludge tank 37, and the sludge pump discharges the sludge through the sludge pipe 38; the residual sludge is flushed with a high-pressure water gun and then extracted by the sludge pump, and the stainless steel protective layer 48 prevents the sludge pipe 38 from being damaged during the flushing process.

[0093] Through the above technical solution, this application realizes the efficient graded treatment and resource utilization of domestic sewage. By alternating the water storage and static mode of the sedimentation tank, the continuous treatment capacity is guaranteed while avoiding treatment interruption; the flushing mechanism 2 is designed through the gear transmission and the slider 202 linkage to ensure that the reciprocating motion of the nozzle 25 covers the pigpen floor and improves the uniformity of flushing; the scraper 41 driven by the sprocket 39 and the chain 40 cooperates with the high-pressure water gun to effectively remove the sludge residue at the bottom of the sedimentation tank and reduce the intensity of manual cleaning; the stainless steel protective layer 48 on the outside of the sludge pipe 38 prevents physical damage to the pipe body due to high-pressure flushing, thereby extending the service life.

[0094] Parts not described in the present invention are the same as those in the prior art or can be implemented using the prior art. Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may 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 special system for rural domestic sewage treatment, characterized in that: include: Filtering mechanism (1), sedimentation mechanism (3), flushing mechanism (2); The filtering mechanism (1) comprises a water pool (10), the inner bottom wall of the water pool (10) is provided with a through groove (11), a filter hopper (12) is inserted into the through groove (11), and the bottom of the through groove (11) is connected to a drain pipe (13); The sedimentation mechanism (3) comprises a water storage tank (14), a sedimentation tank 1, a sedimentation tank 2 (32), and a sludge cleaning mechanism respectively arranged in conjunction with the sedimentation tank 1 and the sedimentation tank 2 (32); the outlet end of the drainage pipe (13) is connected to a one-inlet-two-outlet switching valve (33); one outlet end of the switching valve (33) is connected to the water inlet end of the sedimentation tank 1, and the other outlet end of the switching valve (33) is connected to the water inlet end of the sedimentation tank 2 (32); the water storage tank (14) is respectively connected to the outlet ends of the sedimentation tank 1 and the sedimentation tank 2 (32); The flushing mechanism (2) comprises a bracket (20) and a support seat (26); a slider (202) is movably mounted on the bracket (20); a motor (203) is fixedly mounted on the top of the slider (202); an output shaft of the motor (203) is fixedly connected to a driving gear (204); the outer side of the driving gear (204) is meshedly connected to a driven gear (205); a movable rod (206) is fixedly mounted inside the driven gear (205); one end of the movable rod (206) is rotatably connected to the slider (202); a movable plate (201) is fixedly mounted on the movable rod (206); ), one side of the movable plate (201) is rotatably connected to a connecting arm (29), one side of the connecting arm (29) is fixedly connected to a rotating shaft (28), one end of the rotating shaft (28) is rotatably connected to a connecting plate (27), one side of the connecting plate (27) is fixedly connected to a bracket (20), a water pump (21) is fixedly installed on the top of the support seat (26), the water outlet of the water pump (21) is connected to a hollow shell (24) through a bellows (23), the bottom of the hollow shell (24) is evenly connected to a nozzle (25), and one side of the hollow shell (24) is fixedly connected to a slider (202).

2. A dedicated system for rural domestic sewage treatment according to claim 1, characterized in that: The water inlet (34) of the water pump (21) is connected to a water inlet pipe (22), and one end of the water inlet pipe (22) extends to the interior of the water storage tank (14).

3. The dedicated system for rural domestic sewage treatment according to claim 1, characterized in that: The outer wall of the water pool (10) is fixedly connected with a support plate (16), the interior of the support plate (16) is fixedly embedded with a water outlet pipe (17), and a valve (18) is fixedly installed on the water outlet pipe (17).

4. A dedicated system for rural domestic sewage treatment according to claim 1, characterized in that: A sliding groove is provided inside the slider (202), the bracket (20) is slidably connected to the inner wall of the sliding groove, and the top of the slider (202) is fixedly connected to the outer shell of the motor (203) through screws.

5. The dedicated system for rural domestic sewage treatment according to claim 1, characterized in that: One end of the rotating shaft (28) away from the connecting arm (29) is rotatably connected to the connecting plate (27) via a bearing, and one end of the movable rod (206) is rotatably connected to the slider (202) via a bearing.

6. The dedicated system for rural domestic sewage treatment according to claim 1, characterized in that: The sludge cleaning mechanism includes a sludge pool (37) and a cleaning device. A water inlet (34) and a drain (35) are respectively provided on both sides of the upper part of the sedimentation tank. The drain (35) is connected to a water pump, which is connected to a water storage tank (14). A mud outlet (36) and a sludge pool (37) are provided at the bottom of one side of the sedimentation tank near the water inlet (34). A sludge pipe (38) is provided in the sludge pool (37). The sludge pipe (38) is connected to the drain. A mud outlet (36) is connected to the mud outlet (36) and a sludge pump is connected to the mud outlet (36). Two sets of sprockets (39) are fixedly installed on the side wall of the sedimentation tank away from the sludge tank (37). Each set of sprockets (39) is connected to a chain (40). A plurality of scraper blades (41) are fixedly installed on the two sets of chains (40). A second motor (42) is fixedly installed on the sedimentation tank. The second motor (42) is connected to the driving wheel in the sprocket (39) through the chain (40). The cleaning device comprises a high-pressure water pump (47) fixedly installed at the edge of the sedimentation tank, the high-pressure water pump (47) is connected to a handheld high-pressure water gun, and a manual valve (18) is fixedly installed on the handheld high-pressure water gun.

7. A dedicated system for rural domestic sewage treatment according to claim 6, characterized in that: The bottom surface of the sedimentation tank connected to the sludge tank (37) is set as an inclined bottom surface, and the scraper (41) is set in contact with the bottom surface of the sedimentation tank, and the scraper (41) is a scraper (41) made of polyethylene material.

8. The dedicated system for rural domestic sewage treatment according to claim 6, characterized in that: The drain port (35) is provided with a mounting groove (43), a filter cylinder (44) is installed on the mounting groove (43), threaded holes (45) are provided on the mounting groove (43) and the filter cylinder (44), and fixing bolts (46) are threadedly installed in the threaded holes (45).

9. The dedicated system for rural domestic sewage treatment according to claim 6, characterized in that: The sludge pipe (38) is externally coated with a protective layer (48), the protective layer (48) being configured as a stainless steel protective plate, and the protective layer (48) being fixed to the sludge pool (37) via bolt threads.

10. A method for using a dedicated system for rural domestic sewage treatment, characterized by: The dedicated system according to any one of claims 1 to 9, comprising the steps of: (1) When in use, the filter (12) filters the domestic sewage entering the pool (10) to remove waste residue; (2) The sewage after preliminary filtration enters the drain pipe (13) through the through trough (11) and enters the sedimentation tank 1 through the unified collection pipe. When the sedimentation tank 1 is full, it enters the sedimentation state. At the same time, the switching valve (33) switches to the sedimentation tank 2 (32) to enter the water storage state. When the sedimentation in the sedimentation tank 1 is completed, the precipitated water enters the water storage tank (14) for storage. The sedimentation treatment of domestic sewage is repeated according to step (2); (3) When the pigpen needs to be flushed, the motor 1 (203) and the water pump (21) are started so that the water pump (21) draws the filtered sewage in the water tank (14) into the hollow housing (24) through the bellows (23); (4) After entering the hollow shell (24), the water is sprayed out from the nozzle (25); (5) When the second motor (42) drives the driving gear (204) to rotate, the driven gear (205) drives the movable rod (206) to rotate on the slider (202) under the action of the driving gear (204); (6) The movable plate (201) drives the connecting arm (29) to rotate under the action of the movable rod (206), and then the connecting arm (29) drives the rotating shaft (28) to rotate on the connecting plate (27); (7) The slider (202) is caused to slide back and forth on the bracket (20), so that the hollow shell (24) can drive the nozzle (25) under the action of the slider (202) to evenly and effectively wash the ground of the pigpen; (8) The flushed sewage is connected to the biogas tank through a collection pipe; (9) After the sedimentation tank has been used for a long time, the sludge settles at the bottom of the sedimentation tank and the sludge tank (37). After the last clear liquid is pumped away, the second motor (42) is started, and the second motor (42) drives the driving wheel in the sprocket (39) to rotate. The driving wheel drives the driven wheels of the other sprockets (39) to rotate through the chain (40), so that the chain (40) moves in a circular motion, thereby causing the scraper (41) installed on the chain (40) to scrape the sludge from the bottom of the sedimentation tank; (10) After the scraping is completed, there may still be sludge remaining on the bottom and wall of the pool. Start the high-pressure water pump (47) and move the high-pressure water gun to flush the bottom and wall of the pool. Finally, the muddy water is pumped away by the sludge pump to reduce the residual sludge. The protective layer (48) prevents the high-pressure water gun from damaging the sludge pipe (38) during flushing.

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