Buried domestic sewage treatment system

Abstract

The present application relates to a kind of buried domestic sewage treatment systems, it is related to water treatment technical field, including main tank body, upper cover, water inlet pipe, water outlet pipe, filter cartridge, several partition plates and rotary cleaning system, filter cartridge inner side wall is equipped with filter screen, partition plate is installed between filter cartridge and the inner side wall of main tank body, each partition plate, the inner side wall of main tank body and the outer side wall of filter cartridge form purification tank, water outlet pipe and water inlet pipe are respectively installed on the side wall of main tank body, rotary cleaning system includes rotary water jet rod, lifting power device and rotary device, rotary water jet rod is installed in filter cartridge, lifting power device is along the inner side wall of rotary water jet rod and is lifted and slides, rotary device is along the outer side wall of rotary water jet rod and is lifted and slides, lifting power device is connected with rotary device by nylon rope transmission, water outlet pipe is connected to purification tank, water inlet pipe is connected to rotary water jet rod, rotary device is along the inner side wall of filter screen and slides, maintain processing capacity, prolong maintenance cycle.

Description

Technical Field

[0001] This invention relates to the field of water treatment technology, and in particular to a buried domestic sewage treatment system. Background Technology

[0002] With the improvement of rural living standards and the widespread use of flush toilets, washing machines, and showers, the amount and concentration of pollutants in rural domestic sewage have increased significantly. Direct discharge of untreated sewage leads to water pollution, with substances such as ammonia nitrogen and phosphorus flowing into rivers and lakes, causing eutrophication and, in severe cases, algal blooms or algal blooms. It can also pollute the soil, with harmful substances and pathogens seeping into groundwater and soil, seriously affecting the rural living environment and development.

[0003] Therefore, constructing an effective rural domestic sewage treatment system is a crucial step in improving the rural ecological environment and building beautiful villages. Rural sewage is characterized by large fluctuations in volume, dispersed distribution, and difficulty in collection; therefore, the large-scale centralized treatment model used in cities cannot be simply copied. Commonly used technologies are mainly divided into two categories: decentralized treatment and centralized treatment.

[0004] In rural areas, buried sewage treatment systems are commonly used. When using buried sewage treatment systems, solid waste must first be filtered out using filters. However, because rural sewage contains a large amount of livestock manure, chicken and duck excrement, and contains a lot of organic matter and hair, the filters are prone to clogging due to the proliferation of microorganisms. Summary of the Invention

[0005] To overcome the technical defects of existing technologies, this invention provides a buried domestic sewage treatment system that prevents filter clogging and extends maintenance cycles.

[0006] The technical solution adopted in this invention is:

[0007] An underground domestic sewage treatment system includes a main tank, a top cover, an inlet pipe, an outlet pipe, a filter cylinder, several partition plates, and a rotary cleaning system. The filter cylinder is installed in the middle of the main tank, and its inner wall is equipped with a filter screen. The partition plates are installed between the filter cylinder and the inner wall of the main tank, forming a purification tank between the partition plates, the inner wall of the main tank, and the outer wall of the filter cylinder. The outlet pipe and the inlet pipe are respectively installed on the side wall of the main tank. The two partition plates located at both ends of the outlet pipe have the highest and lowest heights among all partition plates. The partition plates are arranged sequentially along the circumference of the main tank in height order. The filter cylinder is located at the highest... The high partition plate has a filter through-hole on the side away from the water outlet pipe. The rotary cleaning system includes a rotary spray bar, a lifting power device, a rotary device, and a guide device. The rotary spray bar is installed inside the filter cylinder. The lifting power device slides up and down along the inner wall of the rotary spray bar. The rotary device slides up and down along the outer wall of the rotary spray bar. The lifting power device and the rotary device are connected by a nylon rope. The guide device is installed on the lifting power device and the rotary spray bar. The nylon rope passes through the guide device. The water outlet pipe is connected to the purification tank. The water inlet pipe is connected to the rotary spray bar. The rotary device slides along the inner wall of the filter screen.

[0008] Preferably, the main tank includes a plurality of reinforcing grooves, the reinforcing grooves are located on the inner sidewall of the main tank, and each of the partition plates is installed on the corresponding reinforcing groove.

[0009] Preferably, the bottom of the rotary water spray bar is provided with a pressure relief hole, the water inlet pipe is connected to the upper side of the pressure relief hole of the rotary water spray bar, and the water inlet pipe is connected to the lower side of the lifting power device.

[0010] Preferably, the lifting power device includes a lifting piston, the diameter of which is 1 mm to 1.5 mm smaller than the inner diameter of the rotary water spray bar, and the top of the rotary water spray bar is provided with several opening slots.

[0011] Preferably, the rotary device includes a rotary frame and a deflector plate, the upper side of which is rotatably mounted on the bottom of the rotary frame, and the rotary frame is sleeved on the outside of the rotary water spray bar for lifting and lowering.

[0012] Preferably, a brush is provided on the inner wall side of the rotating frame near the filter screen.

[0013] Preferably, the guiding device includes a fixed guide pulley and a movable guide pulley. The fixed guide pulley is installed on the top of the rotating water spray bar, the movable guide pulley is installed on the rotating device, the nylon rope is installed on the top of the lifting power device, the nylon rope passes around the fixed guide pulley and the fixed guide pulley in sequence, and the other end of the nylon rope is installed on the top of the rotating device.

[0014] Preferably, the guiding device further includes a fixed guide ring and a moving guide ring. The fixed guide ring is mounted on the rotating water spray bar, and the moving guide ring is mounted on the rotating frame. When the moving guide ring rises to its highest position, the distance between the fixed guide ring and the moving guide ring is greater than 15 centimeters, and the nylon rope passes through the fixed guide ring and the moving guide ring in sequence.

[0015] The beneficial effects of this invention are:

[0016] The filter cylinder is installed in the middle of the main tank. The inner wall of the filter cylinder is equipped with a filter screen. The filter cylinder is used to filter sewage. Sewage flows in from the inlet pipe, is filtered by the filter screen, and then flows into the filter cylinder. A partition plate is installed between the filter cylinder and the inner wall of the main tank to separate the purification tanks. The partition plate connects the filter cylinder and the main tank to form an integral structure and maintains structural stability. Several purification tanks are formed between the partition plate, the inner wall of the main tank, and the outer wall of the filter cylinder. The outlet pipe and the inlet pipe are installed on the side wall of the main tank to realize water inlet and outlet. In order to make the sewage flow sequentially in each purification tank after flowing out of the filter cylinder, the two partition plates located at both ends of the outlet pipe are at the highest and lowest heights of the partition plates. The partition plates are arranged sequentially along the circumference of the main tank according to their height. The filter cylinder has a post-filtration through hole on the side of the highest partition plate away from the outlet pipe. After the sewage is filtered by the filter screen, the sewage flows into the purification tank through the post-filtration through hole and descends stepwise under the action of gravity under the separation of the progressively lower partition plates until it flows into the outlet pipe.

[0017] The rotary cleaning system includes a rotary spray bar, a lifting power unit, a rotary mechanism, and a guide device. The rotary spray bar is installed inside the filter cartridge. The lifting power unit slides up and down along the inner wall of the rotary spray bar, while the rotary mechanism slides up and down along the outer wall of the rotary spray bar. The lifting power unit moves up and down as sewage flows in, powered by the water pressure of the sewage. The lifting power unit descends under its own weight, thus driving the rotary mechanism to move up and down. The lifting power unit and the rotary mechanism are connected by a nylon rope. The device is mounted on a lifting power unit and a rotating spray bar. A nylon rope passes through a guide device, which constrains the nylon rope to ensure its transmission. The outlet pipe connects to the purification tank, and the inlet pipe connects to the rotating spray bar. The rotating device slides along the inner wall of the filter screen. When the rotating device descends, it tilts, causing it to rotate around the spray bar, thereby scraping off the dirt on the inner wall of the filter screen. Each time water enters through the inlet pipe, the filter screen is cleaned. The rotating device cleans the filter screen and maintains the processing capacity. Attached Figure Description

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

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

[0020] Figure 3 This is a schematic diagram of a rotary cleaning system.

[0021] Figure 4 for Figure 3 Enlarged schematic diagram of A in the middle.

[0022] Figure 5 This is a schematic diagram of the rotary device.

[0023] Figure 6 This is a schematic diagram showing the installation relationship between the rotary water spray bar and the lifting piston.

[0024] Figure 7 This is a schematic diagram of the lifting piston at its limit position on the rotating water spray rod.

[0025] Figure 8 This is a cross-sectional view of the structure of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Main tank body; 11. Reinforcing tank;

[0028] 2. Top cover;

[0029] 3. Water inlet pipe;

[0030] 4. Water outlet pipe;

[0031] 5. Filter cartridge; 51. Post-filter through-hole;

[0032] 6. Divider;

[0033] 7. Rotary cleaning system; 71. Rotary water spray bar; 711. Pressure relief hole; 712. Opening slot; 72. Lifting power unit; 721. Lifting piston; 73. Rotary device; 732. Rotary frame; 733. Skew plate; 74. Guide device; 741. Guide fixed pulley; 743. Guide movable pulley; 744. Guide fixed ring; 745. Guide movable ring; 75. Nylon rope;

[0034] 8. Filter screen;

[0035] 9. Purification tank. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings:

[0037] like Figure 1 — Figure 8As shown, this embodiment provides a buried domestic sewage treatment system, including a main tank 1, a top cover 2, an inlet pipe 3, an outlet pipe 4, a filter cylinder 5, several partition plates 6, and a rotary cleaning system 7. The filter cylinder 5 is installed in the middle of the main tank 1, and a filter screen 8 is provided on the inner wall of the filter cylinder 5. The filter cylinder 5 is used to filter sewage. Sewage flows in from the inlet pipe 3, is filtered by the filter screen 8, and then flows into the filter cylinder 5. The partition plates 6 are installed between the filter cylinder 5 and the inner wall of the main tank 1 to separate the various purification tanks 9. The partition plates 6 separate the filtered sewage. The filter cylinder 5 and the main tank 1 are connected to form an integral structure, ensuring structural stability. Several purification tanks 9 are formed between the partition plates 6, the inner wall of the main tank 1, and the outer wall of the filter cylinder 5. The outlet pipe 4 and inlet pipe 3 are respectively installed on the side wall of the main tank 1 to facilitate water inflow and outflow. To ensure that wastewater flows sequentially within each purification tank 9 after exiting the filter cylinder 5, the two partition plates 6 located at both ends of the outlet pipe 4 are positioned at their highest and lowest heights, respectively. The partition plates 6 are arranged sequentially along the circumference of the main tank 1 according to their height. Figure 2 As shown, the filter cylinder 5 has a post-filter through hole 51 on the side of the highest partition plate 6 away from the water outlet pipe 4. After the sewage is filtered by the filter screen 8, the sewage flows into the purification tank 9 through the post-filter through hole 51, and is separated by the partition plates 6 that are lower in sequence. Under the action of gravity, the sewage descends step by step until it flows into the water outlet pipe 4.

[0038] The rotary cleaning system 7 includes a rotary spray bar 71, a lifting power unit 72, a rotary device 73, and a guide device 74. The rotary spray bar 71 is installed inside the filter cartridge 5. The lifting power unit 72 slides up and down along the inner wall of the rotary spray bar 71, and the rotary device 73 slides up and down along the outer wall of the rotary spray bar 71. The lifting power unit 72 rises and falls when sewage flows in. The power for the lifting power unit 72 to rise comes from the water pressure of the sewage, while the lifting power unit 72 falls under its own gravity, thereby driving the rotary device 73 to rise and fall. The lifting power unit 72 and the rotary device 73 are connected by a nylon rope 75. The guide device... 74. The lifting power device 72 and the rotary spray bar 71 are installed. The nylon rope 75 passes through the guide device 74, which constrains the nylon rope 75 to ensure its transmission. The water outlet pipe 4 is connected to the purification tank 9, and the water inlet pipe 3 is connected to the rotary spray bar 71. The rotary device 73 slides along the inner wall of the filter screen 8. When the rotary device 73 descends, it tilts, causing it to rotate around the rotary spray bar 71, thereby scraping off the dirt on the inner wall of the filter screen 8. Each time water enters through the water inlet pipe 3, the filter screen 8 is cleaned. The rotary device 73 cleans the filter screen 8 and extends the maintenance cycle.

[0039] Specifically, the main tank 1 includes several reinforcing grooves 11, which are located on the inner sidewall of the main tank 1. Each partition plate 6 is installed on the corresponding reinforcing groove 11 to strengthen the structure and make the structure stable.

[0040] Specifically, the bottom of the rotary spray bar 71 is provided with a pressure relief hole 711. The water inlet pipe 3 is connected to the upper side of the pressure relief hole 711 of the rotary spray bar 71 and the lower side of the lifting power device 72. When the sewage in the rotary spray bar 71 stops being input, the lifting power device 72 descends and the rotary device 73 rises to reset. After the rotary spray bar 71 is filled with sewage, the lifting power device 72 rises and the rotary device 73 descends under its own gravity, thereby causing the rotary device 73 to rotate. The sewage flows out from the pressure relief hole 711 into the filter screen 8.

[0041] Specifically, the lifting power device 72 includes a lifting piston 721. The diameter of the lifting piston 721 is 1 mm to 1.5 mm smaller than the inner diameter of the rotary water spray rod 71 to avoid jamming. In order to prevent the lifting piston 721 from detaching from the top of the rotary water spray rod 71, the top of the rotary water spray rod 71 is provided with several opening slots 712. Due to the guidance of the opening slots 712, when the lifting piston 721 rises to the top of the rotary water spray rod 71, sewage flows out from each opening slot 712, thereby preventing the lifting piston 721 from detaching from the top of the rotary water spray rod 71.

[0042] Specifically, the slewing device 73 includes a slewing frame 732 and a deflector plate 733. The upper side of the deflector plate 733 is rotatably mounted on the bottom of the slewing frame 732. The slewing frame 732 is sleeved on the outside of the slewing water spray bar 71 and rises and falls. When the slewing frame 732 descends, the deflector plate 733 deflects randomly to one side, so that the slewing frame 732 rotates around the axis of the slewing water spray bar 71 while descending, forming a spiral downward trajectory. The nylon rope 75 deflects accordingly. When the slewing frame 732 rises, the deflector plate 733 hangs down naturally. Under the lateral tension of the nylon rope 75, the slewing frame 732 rotates in the opposite direction.

[0043] Specifically, the rotating frame 732 has a brush on the inner wall side near the filter screen 8 to clean the inner wall of the filter screen 8.

[0044] Specifically, the guiding device 74 includes a fixed guide pulley 741 and a movable guide pulley 743. The fixed guide pulley 741 is installed on the top of the rotating water spray bar 71, the movable guide pulley 743 is installed on the rotating device 73, and the nylon rope 75 is installed on the top of the lifting power device 72. The nylon rope 75 passes around the fixed guide pulley 741 and the fixed guide pulley 741 in sequence. The other end of the nylon rope 75 is installed on the top of the rotating device 73 to maintain the direction of the nylon rope 75.

[0045] Specifically, the guiding device 74 also includes a fixed guide ring 744 and a moving guide ring 745. The fixed guide ring 744 is mounted on the rotating water spray bar 71, and the moving guide ring 745 is mounted on the rotating frame 732. The nylon rope 75 passes through the fixed guide ring 744 and the moving guide ring 745 in sequence to maintain the direction of the nylon rope 75. In order to prevent the nylon rope 75 from getting tangled or tangled with the rotating water spray bar 71, when the moving guide ring 745 rises to its highest position, the distance between the fixed guide ring 744 and the moving guide ring 745 is still greater than 15 centimeters, thereby avoiding the nylon rope 75 from getting tangled.

[0046] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A subsurface domestic sewage treatment system, characterized in that The utility model provides a water purifying system, which comprises a main tank, a cover, a water inlet pipe, a water outlet pipe, a filter cartridge, a plurality of partition plates and a rotary cleaning system, the filter cartridge is installed in the middle of the main tank, the inner side wall of the filter cartridge is provided with a filter screen, the partition plates are installed between the filter cartridge and the inner side wall of the main tank, the partition plates, the inner side wall of the main tank and the outer side wall of the filter cartridge form a purification tank, the water outlet pipe and the water inlet pipe are installed on the side wall of the main tank, the two partition plates at the two ends of the water outlet pipe are respectively the highest and the lowest among the partition plates, the partition plates are sequentially arranged along the circumference of the main tank according to the height, the filter cartridge is provided with a filter-through hole on the side away from the water outlet pipe of the highest partition plate, the rotary cleaning system comprises a rotary water spraying rod, a lifting power device, a rotary device and a guide device, the rotary water spraying rod is installed in the filter cartridge, the lifting power device slides along the inner side wall of the rotary water spraying rod, the rotary device slides along the outer side wall of the rotary water spraying rod, the lifting power device and the rotary device are connected through a nylon rope, the nylon rope passes through the guide device, the water outlet pipe is connected to the purification tank, the water inlet pipe is connected to the rotary water spraying rod, the rotary device slides along the inner side wall of the filter screen, the lifting power device comprises a lifting piston, the diameter of the lifting piston is 1mm to 1.5mm smaller than the inner diameter of the rotary water spraying rod, the top of the rotary water spraying rod is provided with a plurality of open grooves, the rotary device comprises a rotary frame and a deflection plate, the upper side of the deflection plate is rotatably installed at the bottom of the rotary frame, the rotary frame is sleeved on the outer side of the rotary water spraying rod and lifts, the guide device comprises a guide fixed pulley and a guide movable pulley, the guide fixed pulley is installed at the top of the rotary water spraying rod, the guide movable pulley is installed on the rotary device, the nylon rope is installed at the top of the lifting power device, the nylon rope passes through the guide fixed pulley and the guide movable pulley in sequence, the other end of the nylon rope is installed at the top of the rotary device.

2. The buried domestic sewage treatment system according to claim 1, characterized in that, The main tank comprises a plurality of reinforcing grooves, the reinforcing grooves are located on the inner side wall of the main tank, and each partition plate is installed on a corresponding reinforcing groove.

3. The buried domestic sewage treatment system according to claim 1, characterized in that, The bottom of the rotary water spraying rod is provided with a pressure relief hole, the water inlet pipe is connected to the upper side of the pressure relief hole of the rotary water spraying rod, and the water inlet pipe is connected to the lower side of the lifting power device.

4. The buried domestic sewage treatment system according to claim 1, characterized in that, The inner side wall side of the rotary frame close to the filter screen is provided with a brush.

5. The buried domestic sewage treatment system according to claim 1, characterized in that, The guide device further comprises a guide fixed ring and a guide movable ring, the guide fixed ring is installed on the rotary water spraying rod, the guide movable ring is installed on the rotary frame, when the guide movable ring rises to the highest position, the distance between the guide fixed ring and the guide movable ring is greater than 15cm, and the nylon rope passes through the guide fixed ring and the guide movable ring in sequence.

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