A buried sewage treatment system

Abstract

The application relates to a buried sewage treatment system and relates to the technical field of sewage treatment, which comprises an aerated grit chamber, an aeration assembly and a driving assembly. One side of the aerated grit chamber is provided with a water inlet, the side, away from the water inlet, of the aerated grit chamber is provided with a water outlet, a controller is installed on the aerated grit chamber, a sand suction bridge is slidably connected to the aerated grit chamber, a sand suction pump is installed on the sand suction bridge, the sand suction pump is electrically connected with the controller, a sand suction pipe is communicated with the suction end of the sand suction pump, and one end of the sand suction pipe is located at the bottom of the aerated grit chamber. The aeration assembly is located in the aerated grit chamber and is used for aerating treatment of the aerated grit chamber. The driving assembly is located on the aerated grit chamber and is used for controlling the sand suction bridge to slide according to the working state of the aeration assembly. The application has the effect of improving the aeration efficiency.

Description

Technical Field

[0001] This application relates to the technical field of wastewater treatment, and in particular to a buried wastewater treatment system. Background Technology

[0002] An underground sewage treatment system is a sewage treatment device that buries all or part of the sewage treatment equipment underground. It utilizes underground space to collect, treat, and discharge sewage. This system is mainly used in densely populated residential areas, commercial parks, tourist attractions, and rural settlements.

[0003] Existing underground sewage treatment systems typically include components such as aerated grit chambers, aeration equipment, and sand suction devices. During operation, sewage is filtered through a fine screen and enters the aerated grit chamber through the inlet. The aeration equipment introduces air into the aerated grit chamber, allowing the sewage to fully contact with the air. On the one hand, aeration increases the dissolved oxygen content in the water, promoting the metabolic activity of microorganisms. On the other hand, the disturbance of the water flow causes inorganic particles such as sand to settle to the bottom of the chamber. At this time, the sand suction device is activated. Through the sliding of the sand suction bridge on the surface of the chamber, the sand suction pump sucks the sand particles from the bottom of the chamber out through the sand suction pipe. The treated sewage is then discharged from the outlet, completing the entire sewage treatment process.

[0004] In existing underground sewage treatment systems, aeration equipment is usually fixedly installed in the aeration grit chamber. The aeration range of the aeration equipment is fixed, which easily leads to excessive accumulation of sand in some areas, resulting in insufficient contact area between sewage and air and insufficient dissolved oxygen, thus reducing aeration efficiency. Summary of the Invention

[0005] To improve aeration efficiency, this application provides a buried sewage treatment system.

[0006] This application provides a buried sewage treatment system, which adopts the following technical solution:

[0007] An underground sewage treatment system includes an aerated grit chamber, an aeration assembly, and a drive assembly. The aerated grit chamber has an inlet on one side and an outlet on the side away from the inlet. A controller is installed on the aerated grit chamber. A sand suction bridge is slidably connected to the aerated grit chamber, and a sand suction pump is installed on the sand suction bridge. The sand suction pump is electrically connected to the controller, and its suction end is connected to a sand suction pipe, one end of which is located at the bottom of the aerated grit chamber. The aeration assembly is located inside the aerated grit chamber and is used for aeration treatment of the aerated grit chamber. The drive assembly is located on the aerated grit chamber and is used to control the sliding of the sand suction bridge according to the working state of the aeration assembly.

[0008] By adopting the above technical solution, the sewage enters the aerated grit chamber through the inlet after being filtered by the fine screen. The operator controls the aeration components to perform aeration treatment. The drive component drives the sand suction bridge to slide along the length of the aerated grit chamber according to the working status of the aeration components, so as to avoid the accumulation of sand particles and affect the aeration efficiency, thereby improving the aeration efficiency of the aeration components.

[0009] Optionally, the aeration assembly includes an aeration section, a scraping section, and a driving section; the aeration section is located inside the aerated grit chamber and is used for aeration treatment of the aerated grit chamber; the scraping section is located inside the aerated grit chamber and is used for scraping the inner sidewall of the aerated grit chamber; the driving section is located on the aerated grit chamber and is used for controlling the aeration section and the scraping section to move up and down inside the aerated grit chamber.

[0010] By adopting the above technical solution, the sewage enters the aerated grit chamber through the inlet after being filtered by a fine screen. The operator controls the drive unit to work, which drives the aeration unit and the scraping unit to move up and down. The scraping unit scrapes off the impurities attached to the inner wall of the aerated grit chamber, and the aeration unit increases the contact area between the sewage and the air, thereby improving the aeration efficiency.

[0011] Optionally, the aeration unit includes an air pump, an aeration main pipe, and aeration branch pipes; the air pump is installed on the aerated grit chamber, the air pump is electrically connected to the controller, and the air outlet is connected to a connecting pipe; the aeration main pipe is located inside the aerated grit chamber and is connected to the connecting pipe; the aeration branch pipe is located inside the aerated grit chamber, and one end is connected to the aeration main pipe, and the aeration branch pipe is provided with aeration holes.

[0012] By adopting the above technical solution, when in use, the air pump delivers air to the aeration main pipe through the connecting pipe, and the air is evenly released into the sewage through the aeration holes of the aeration branch pipe, forming a stable aeration effect; the distribution structure of the aeration main pipe and branch pipes can expand the aeration coverage area, thereby improving the aeration efficiency of sewage.

[0013] Optionally, the scraping section includes a first connecting plate, a first scraper, a second connecting plate, and a second scraper; the first connecting plate is fixedly connected to the aeration main pipe, the end of the first connecting plate away from the aeration main pipe is fixedly connected to the first scraper, and one end of the first scraper abuts against the inner sidewall of the aerated grit chamber; the second connecting plate is fixedly connected to the aeration main pipe, the end of the second connecting plate away from the aeration main pipe is fixedly connected to the second scraper, and one end of the second scraper abuts against the sidewall of the aerated grit chamber.

[0014] By adopting the above technical solution, when in use, the aeration unit moves up and down under the drive of the drive unit, and the first scraper and the second scraper move synchronously with the aeration main pipe. The first scraper and the second scraper scrape off the sand and sludge adhering to the inner wall of the aerated grit chamber, making it difficult for impurities to adhere to the inner wall of the aerated grit chamber.

[0015] Optionally, the drive unit includes a motor, a first reciprocating screw, and a drive block; the motor is mounted on the aerated grit chamber and electrically connected to the controller; a drive groove is provided in the aerated grit chamber, the first reciprocating screw is vertically arranged in the drive groove and fixedly connected to the output shaft of the motor; the drive block is located in the drive groove and threadedly connected to the first reciprocating screw.

[0016] By adopting the above technical solution, when in use, the controller controls the motor to work, the motor drives the first reciprocating screw to rotate, and the first reciprocating screw drives the drive block to slide along the length direction of the first reciprocating screw, so that the aeration branch pipe can easily aerate different positions in the aerated grit chamber, thereby improving the aeration efficiency.

[0017] Optionally, the drive unit further includes a protective sleeve and a bellows; a sealing plate is horizontally arranged inside the drive groove, the sealing plate is fixedly connected to the aerated grit chamber, the sealing plate divides the drive groove into a drive cavity and a sealing cavity, the protective sleeve is located inside the sealing cavity of the drive groove and is sleeved inside the first reciprocating screw, a sliding sleeve is vertically arranged inside the protective sleeve, the sliding sleeve is slidably connected to the protective sleeve, and one end is fixedly connected to the drive block; the bellows is located inside the drive cavity of the sealing plate, one end of the bellows is fixedly connected to the drive block, and the other end is fixedly connected to the aerated grit chamber.

[0018] By adopting the above technical solution, the cooperation structure between the protective sleeve and the sliding sleeve can prevent sewage and sand particles from entering the sealed cavity of the drive groove, thus extending the service life of the first reciprocating screw. The bellows extends and retracts with the sliding of the drive block in the drive cavity of the drive groove, which not only ensures the up and down sliding of the drive block, but also prevents the first reciprocating screw in the drive cavity from being corroded and worn through the sealing design.

[0019] Optionally, the drive assembly includes a second reciprocating screw, a guide rod, a sliding box, a partition, and a rack; the second reciprocating screw is horizontally disposed on the aerated grit chamber and rotatably connected to the aerated grit chamber, the second reciprocating screw is threadedly connected to the sand suction bridge, and a gear is fixedly connected to one end of the second reciprocating screw; the guide rod is horizontally disposed on the aerated grit chamber and rotatably connected to the aerated grit chamber, and the guide rod is slidably connected to the sand suction bridge; the sliding box is fixedly disposed on the aerated grit chamber; a limit ring is fixedly connected to the bottom of the sliding sleeve, and the limit ring is connected to the... The protective sleeve is slidably connected, and the limiting ring and the sliding sleeve divide the protective sleeve into a water-containing cavity and a sliding cavity; a spring is provided in the water-containing cavity of the protective sleeve, and the two ends of the spring are fixedly connected to the protective sleeve and the limiting ring respectively; the partition is located in the sliding box and is slidably connected to the sliding box, and the partition divides the interior of the sliding box into a water-containing cavity and a sliding cavity; the water-containing cavity of the sliding box is filled with liquid and is connected to the water-containing cavity of the protective sleeve through a pipe; the rack is horizontally arranged, and one end is slidably connected to the partition, and the rack meshes with the gear.

[0020] By adopting the above technical solution, when the aeration unit slides up and down under the drive of the drive unit, the sliding sleeve slides inside the protective sleeve, causing the volume of the water-containing chamber to change. The liquid in the water-containing chamber of the protective sleeve flows through the pipe to the water-containing chamber of the sliding box, increasing the volume of the water-containing chamber of the sliding box. The partition slides along the length of the sliding box, and the partition drives the rack to slide synchronously. The rack meshes with the gear to drive the second reciprocating screw to rotate. The second reciprocating screw drives the sand suction bridge to slide along the length of the aerated grit chamber, so that the sand suction bridge works synchronously when the motor is working, thereby making it difficult for sand particles to accumulate at the bottom of the aerated grit chamber.

[0021] Optionally, a first guide plate is provided on one side of the rack, and a guide slope is formed on the first guide plate; a second guide plate is provided on the side of the rack away from the first guide plate, and a guide slope is formed on the second guide plate.

[0022] By adopting the above technical solution, when the drive block slides downwards, the spring is in a compressed state, and the liquid in the protective sleeve's water-containing cavity flows through the pipe to the water-containing cavity of the sliding box, increasing the volume of the sliding box's water-containing cavity. The partition slides towards the second reciprocating screw, and the partition drives the rack to slide synchronously. When the guide slope of the first guide plate abuts against the sliding box, the first guide plate drives the rack to slide towards the sand-absorbing bridge. When the drive block abuts against the sealing plate, the rack disengages from the gear, and the motor continues to work, driving the drive... The moving block slides upward, the spring returns to its original position, and the liquid in the sliding box flows through the pipe into the protective sleeve's water chamber. The partition slides away from the second reciprocating screw. When the guide slope of the second guide plate abuts against the sliding box, the second guide plate drives the rack to slide away from the sand suction bridge. When the rack returns to its original position, the driving block slides to the top of the first reciprocating screw, causing the aeration branch pipe to move downward. The sand particles settle synchronously with the aeration branch pipe to the bottom of the aerated grit chamber, and the sand suction bridge slides synchronously, achieving coordinated action of aeration and sand suction.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] By setting up aeration components, the aeration efficiency is improved;

[0025] By setting up a drive component, aeration and sand suction can be synchronized. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of an embodiment of this application;

[0027] Figure 2 This is a cross-sectional view of an embodiment of this application;

[0028] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0029] Figure 4 This is a partial cross-sectional view of the partition in this embodiment of the application.

[0030] Explanation of reference numerals in the attached drawings: 1. Aerated grit chamber; 11. Inlet; 12. Outlet; 13. Controller; 14. Sand suction bridge; 141. Sand suction pump; 1411. Sand suction pipe; 15. Drive tank; 151. Sealing plate; 2. Aeration assembly; 21. Aeration section; 211. Air pump; 2111. Connecting pipe; 212. Main aeration pipe; 213. Branch aeration pipe; 2131. Aeration hole; 22. Scraper section; 221. First connecting plate; 222. First scraper; 223. 224. Second connecting plate; 23. Second scraper; 23. Drive unit; 231. Motor; 232. First reciprocating screw; 233. Drive block; 234. Protective sleeve; 2341. Sliding sleeve; 2342. Limiting ring; 2343. Spring; 235. Bellows; 3. Drive assembly; 31. Second reciprocating screw; 311. Gear; 32. Guide rod; 33. Sliding box; 34. Partition plate; 35. Rack; 351. First guide plate; 352. Second guide plate. Detailed Implementation

[0031] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0032] This application discloses a buried sewage treatment system. (Refer to...) Figure 1 A buried sewage treatment system includes an aerated grit chamber 1, an aeration assembly 2, and a drive assembly 3. The aerated grit chamber 1 has an inlet 11 on one side and an outlet 12 on the side away from the inlet 11. A controller 13 is installed on the aerated grit chamber 1. A sand suction bridge 14 is provided on the aerated grit chamber 1, and a sand suction pump 141 is installed on the sand suction bridge 14, electrically connected to the controller 13. The suction end of the sand suction pump 141 is connected to a sand suction pipe 1411. The aeration assembly 2 is located inside the aerated grit chamber 1 and is used for aeration treatment of the aerated grit chamber 1. The drive assembly 3 is located on the aerated grit chamber 1 and is used to control the sliding of the sand suction bridge 14 according to the working state of the aeration assembly 2.

[0033] After being filtered by a fine screen, the wastewater enters the aerated grit chamber 1 through the inlet 11. The operator controls the aeration component 2 to perform aeration treatment, and the drive component 3 drives the sand suction bridge 14 to slide along the length of the aerated grit chamber 1 according to the working status of the aeration component 2.

[0034] Reference Figure 1 and Figure 2The aerated grit chamber 1 has an open top and a constricted bottom. The inlet 11 and outlet 12 are rectangular openings. A controller 13 is installed on the aerated grit chamber 1. A sand suction bridge 14 is vertically positioned and slidably connected to the aerated grit chamber 1 along its length. The sand suction pipe 1411 is circular, with one end located at the bottom of the aerated grit chamber 1. A drive groove 15, rectangular in shape, is provided inside the aerated grit chamber 1. A sealing plate 151, rectangular in shape, is horizontally positioned inside the drive groove 15 and fixedly connected to the aerated grit chamber 1. The sealing plate 151 divides the drive groove 15 into a drive chamber and a sealing chamber.

[0035] Reference Figure 1 The aeration assembly 2 includes an aeration section 21, a scraping section 22, and a driving section 23. The aeration section 21 is located inside the aerated grit chamber 1 and is used for aeration treatment of the aerated grit chamber 1. The scraping section 22 is located inside the aerated grit chamber 1 and is used for scraping the inner wall of the aerated grit chamber 1. The driving section 23 is located on the aerated grit chamber 1 and is used to control the up-and-down sliding of the aeration section 21 within the aerated grit chamber 1.

[0036] The aeration unit 21 includes an air pump 211, an aeration main pipe 212, and aeration branch pipes 213. The air pump 211 is installed on the aerated grit chamber 1 and is electrically connected to the controller 13. The air pump 211's outlet is connected to a connecting pipe 2111, which is circular in shape. The aeration main pipe 212 is horizontally positioned within the aerated grit chamber 1 and is circular in shape, connected to the connecting pipe 2111. Multiple aeration branch pipes 213 are located within the aerated grit chamber 1 and are circular in shape, connected to the aeration main pipe 212. Multiple aeration branch pipes 213 are spaced apart along the length of the aeration main pipe 212. Multiple aeration holes 2131 are provided on each aeration branch pipe 213, spaced apart along the length of the aeration branch pipe 213.

[0037] Reference Figure 1 and Figure 2 The scraping section 22 includes a first connecting plate 221, a first scraper 222, a second connecting plate 223, and a second scraper 224. The first connecting plate 221 is vertically arranged and rectangular in shape, and is fixedly connected to the aeration main pipe 212. The first scraper 222 is vertically arranged and rectangular in shape, and is fixedly connected to the end of the first connecting plate 221 away from the aeration main pipe 212; one end of the first scraper 222 abuts against the inner wall of the aerated grit chamber 1. The second connecting plate 223 is vertically arranged and rectangular in shape, and is fixedly connected to the aeration main pipe 212. The second scraper 224 is vertically arranged and rectangular in shape, and is fixedly connected to the end of the second connecting plate 223 away from the aeration main pipe 212; one end of the second scraper 224 abuts against the side wall of the aerated grit chamber 1.

[0038] The drive unit 23 includes a motor 231, a first reciprocating screw 232, a drive block 233, a protective sleeve 234, and a bellows 235. The motor 231 is mounted on the aerated grit chamber 1 and electrically connected to the controller 13. The first reciprocating screw 232 is vertically disposed within the drive groove 15 and fixedly connected to the output shaft of the motor 231. The drive block 233 is rectangular and located within the drive groove 15. The drive block 233 is threadedly connected to the first reciprocating screw 232 and fixedly connected to the first scraper 222. The protective sleeve 234 is vertically disposed within the sealed cavity of the drive groove 15 and is cylindrical. The protective sleeve 234 is fitted inside the first reciprocating screw 232.

[0039] Reference Figure 2 and Figure 3 A sliding sleeve 2341 is vertically arranged inside the protective sleeve 234. The sliding sleeve 2341 is cylindrical and is slidably connected to the protective sleeve 234 in the vertical direction. One end of the sliding sleeve 2341 is fixedly connected to the driving block 233. A limit ring 2342 is horizontally arranged at the bottom of the sliding sleeve 2341. The limit ring 2342 is annular and is slidably connected to the protective sleeve 234 in the vertical direction. The limit ring 2342 is fixedly connected to the sliding sleeve 2341. The limit ring 2342 and the sliding sleeve 2341 divide the protective sleeve 234 into a water-containing cavity and a sliding cavity. A spring 2343 is vertically arranged inside the water-containing cavity of the protective sleeve 234. The two ends of the spring 2343 are fixedly connected to the protective sleeve 234 and the limit ring 2342, respectively. The bellows 235 is located inside the driving cavity of the sealing plate 151. One end of the corrugated pipe 235 is fixedly connected to the drive block 233, and the other end is fixedly connected to the aerated grit chamber 1.

[0040] After being filtered by a fine screen, wastewater enters the aerated grit chamber 1 through inlet 11. Controller 13 controls motor 231 to operate, which in turn drives the first reciprocating screw 232 to rotate. The first reciprocating screw 232 then drives drive block 233 to slide up and down along the length of the first reciprocating screw 232. Drive block 233 drives first scraper 222 and second scraper 224 to slide synchronously, scraping away sand and sludge adhering to the inner wall of the aerated grit chamber 1. Second scraper 224 and second scraper 224 drive the aeration main pipe 212 to slide synchronously through first connecting plate 221 and second connecting plate 223. Controller 13 controls air pump 211 to operate, which supplies air to the aeration main pipe 212 through connecting pipe 2111. The air is then evenly released into the wastewater through the aeration holes 2131 of aeration branch pipe 213.

[0041] Reference Figure 1 and Figure 4The drive assembly 3 includes a second reciprocating screw 31, a guide rod 32, a sliding box 33, a partition plate 34, and a rack 35. The second reciprocating screw 31 is horizontally mounted on the aerated grit chamber 1 and rotatably connected to it. The second reciprocating screw 31 is threadedly connected to the sand suction bridge 14. A gear 311 is vertically mounted on one end of the second reciprocating screw 31, and the gear 311 is fixedly connected to one end of the second reciprocating screw 31. The guide rod 32 is horizontally mounted on the aerated grit chamber 1 and is circular in shape. The guide rod 32 is rotatably connected to the aerated grit chamber 1, and the guide rod 32 is slidably connected to the sand suction bridge 14 along the length of the guide rod 32.

[0042] A sliding box 33 is horizontally mounted on the aerated grit chamber 1 and is rectangular in shape. The sliding box 33 is fixedly connected to the aerated grit chamber 1. A partition 34 is vertically mounted inside the sliding box 33 and is rectangular in shape. The partition 34 is slidably connected to the sliding box 33 along its length, dividing the interior of the sliding box 33 into a water-containing chamber and a sliding chamber. The water-containing chamber of the sliding box 33 is filled with liquid and is connected to the water-containing chamber of the protective sleeve 234 via a pipe. A rack 35 is horizontally mounted, with one end slidably connected to the partition 34 along its length. The rack 35 meshes with a gear 311. A first guide plate 351 is provided on one side of the rack 35. A guide slope is formed on the first guide plate 351, which is inclined from the side away from the lead screw towards the side closer to the lead screw, moving away from the partition 34. A second guide plate 352 is provided on the side of the rack 35 away from the first guide plate 351. A guide slope is provided on the second guide plate 352. The guide slope is inclined from the side away from the lead screw to the side closer to the lead screw and towards the partition plate 34.

[0043] When the drive block 233 slides downward, it drives the sliding sleeve 2341 and the limiting ring 2342 to slide downward. The limiting ring 2342 compresses the spring 2343, and the spring 2343 is in a compressed state. The liquid in the water-containing cavity of the protective sleeve 234 flows through the pipe to the water-containing cavity of the sliding box 33, and the volume of the water-containing cavity of the sliding box 33 increases. The partition 34 slides towards the second reciprocating screw 31, and the partition 34 drives the rack 35 to slide synchronously. The rack 35 drives the gear 311 to rotate, and the gear 311 drives the sand suction bridge 14 to slide along the length of the aerated grit chamber 1.

[0044] When the guide slope of the first guide plate 351 abuts against the sliding box 33, the first guide plate 351 drives the rack 35 to slide towards the sand suction bridge 14. When the drive block 233 abuts against the sealing plate 151, the rack 35 disengages from the gear 311.

[0045] Motor 231 continues to work, driving drive block 233 to slide upward, spring 2343 returns to its original position, liquid in the water chamber of sliding box 33 flows through pipe to the water chamber of protective sleeve 234, partition 34 slides away from second reciprocating screw 31, when the guide slope of second guide plate 352 abuts against sliding box 33, second guide plate 352 drives rack 35 to slide away from sand suction bridge 14, when rack 35 returns to its original position, drive block 233 slides to the top of first reciprocating screw 232.

[0046] The implementation principle of a buried sewage treatment system according to an embodiment of this application is as follows:

[0047] After being filtered by a fine screen, wastewater enters the aerated grit chamber 1 through inlet 11. Controller 13 controls motor 231 to operate, which in turn drives the first reciprocating screw 232 to rotate. The first reciprocating screw 232 then drives drive block 233 to slide up and down along the length of the first reciprocating screw 232. Drive block 233 drives first scraper 222 and second scraper 224 to slide synchronously, scraping away sand and sludge adhering to the inner wall of the aerated grit chamber 1. Second scraper 224 and second scraper 224 drive the aeration main pipe 212 to slide synchronously through first connecting plate 221 and second connecting plate 223. Controller 13 controls air pump 211 to operate, which supplies air to the aeration main pipe 212 through connecting pipe 2111. The air is then evenly released into the wastewater through the aeration holes 2131 of aeration branch pipe 213.

[0048] When the first reciprocating screw 232 drives the drive block 233 to slide downward, the drive block 233 drives the sliding sleeve 2341 and the limiting ring 2342 to slide downward. The limiting ring 2342 squeezes the spring 2343, and the spring 2343 is in a compressed state. The liquid in the water-containing cavity of the protective sleeve 234 flows through the pipe to the water-containing cavity of the sliding box 33. The volume of the water-containing cavity of the sliding box 33 increases, and the partition 34 slides towards the second reciprocating screw 31. The partition 34 drives the rack 35 to slide synchronously. The rack 35 drives the gear 311 to rotate, and the gear 311 drives the sand suction bridge 14 to slide along the length of the aerated grit chamber 1.

[0049] When the guide slope of the first guide plate 351 abuts against the sliding box 33, the first guide plate 351 drives the rack 35 to slide towards the sand suction bridge 14. When the drive block 233 abuts against the sealing plate 151, the rack 35 disengages from the gear 311.

[0050] Motor 231 continues to work, driving drive block 233 to slide upward, spring 2343 returns to its original position, liquid in the water chamber of sliding box 33 flows through pipe to the water chamber of protective sleeve 234, partition 34 slides away from second reciprocating screw 31, when the guide slope of second guide plate 352 abuts against sliding box 33, second guide plate 352 drives rack 35 to slide away from sand suction bridge 14, when rack 35 returns to its original position, drive block 233 slides to the top of first reciprocating screw 232.

[0051] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A buried sewage treatment system, characterized in that: The aeration system includes an aerated grit chamber (1), an aeration assembly (2), and a drive assembly (3). An inlet (11) is provided on one side of the aerated grit chamber (1), and an outlet (12) is provided on the side of the aerated grit chamber (1) away from the inlet (11). A controller (13) is installed on the aerated grit chamber (1), and a sand-suction bridge (14) is slidably connected to the aerated grit chamber (1). A sand-suction pump (141) is installed on the sand-suction bridge (14), and the sand-suction pump (141) is electrically connected to the controller (13). The suction end of the sand-suction pump (141) is connected to a sand-suction pipe (1411), and one end of the sand-suction pipe (1411) is located at the bottom of the aerated grit chamber (1). The aeration assembly... The component (2) is located inside the aerated grit chamber (1) and is used for aeration treatment of the aerated grit chamber (1); the drive assembly (3) is located on the aerated grit chamber (1) and is used to control the sliding of the suction bridge (14) according to the working state of the aeration assembly (2); the aeration assembly (2) includes a drive unit (23); the drive unit (23) includes a motor (231), a first reciprocating screw (232) and a drive block (233); the motor (231) is installed on the aerated grit chamber (1) and is electrically connected to the controller (13); a drive groove (15) is opened in the aerated grit chamber (1), and the first reciprocating screw (232) is vertically arranged in the drive groove (15). The drive block (233) is located inside the drive groove (15) and is fixedly connected to the output shaft of the motor (231); the drive part (23) also includes a protective sleeve (234) and a bellows (235); a sealing plate (151) is horizontally arranged inside the drive groove (15), the sealing plate (151) is fixedly connected to the aerated grit chamber (1), the sealing plate (151) divides the drive groove (15) into a drive cavity and a sealing cavity, the protective sleeve (234) is located inside the sealing cavity of the drive groove (15) and is sleeved on the first reciprocating screw (232), and the protective sleeve (234) is vertically arranged inside the drive groove (15). A sliding sleeve (2341) is slidably connected to the protective sleeve (234), and one end is fixedly connected to the drive block (233); the bellows (235) is located in the drive cavity of the sealing plate (151); the drive assembly (3) includes a second reciprocating screw (31), a guide rod (32), a sliding box (33), a partition plate (34), and a rack (35); the second reciprocating screw (31) is horizontally arranged on the aerated grit chamber (1) and rotatably connected to the aerated grit chamber (1); the second reciprocating screw (31) is threadedly connected to the sand suction bridge (14); and one end of the second reciprocating screw (31) is fixedly connected to a gear (311).The guide rod (32) is horizontally mounted on the aerated grit chamber (1) and rotatably connected to the aerated grit chamber (1). The guide rod (32) is slidably connected to the sand suction bridge (14). The sliding box (33) is fixedly mounted on the aerated grit chamber (1). The bottom of the sliding sleeve (2341) is fixedly connected to a limiting ring (2342). The limiting ring (2342) is slidably connected to the protective sleeve (234). The limiting ring (2342) and the sliding sleeve (2341) divide the protective sleeve (234) into a water-containing cavity and a sliding cavity. A spring (2343) is provided in the water-containing cavity of the protective sleeve (234). The two ends of the spring (2343) are fixedly connected to the protective sleeve (234) and the limiting ring (2342) respectively. The partition (34) is located inside the sliding box (33) and is slidably connected to the sliding box (33). The partition (34) divides the interior of the sliding box (33) into a water-containing cavity and a sliding cavity. The water-containing cavity of the sliding box (33) is filled with liquid and is connected to the water-containing cavity of the protective sleeve (234) through a pipe. The rack (35) is horizontally arranged and one end is slidably connected to the partition (34). The rack (35) meshes with the gear (311). A first guide plate (351) is provided on one side of the rack (35), and a guide slope is provided on the first guide plate (351). A second guide plate (352) is provided on the side of the rack (35) away from the first guide plate (351), and a guide slope is provided on the second guide plate (352).

2. The underground sewage treatment system according to claim 1, characterized in that: The aeration assembly (2) further includes an aeration section (21) and a scraping section (22); the aeration section (21) is located inside the aerated grit chamber (1) and is used to aerate the aerated grit chamber (1); the scraping section (22) is located inside the aerated grit chamber (1) and is used to scrape the inner wall of the aerated grit chamber (1); the drive section (23) is located on the aerated grit chamber (1) and is used to control the aeration section (21) and the scraping section (22) to move up and down inside the aerated grit chamber (1).

3. The underground sewage treatment system according to claim 2, characterized in that: The aeration unit (21) includes an air pump (211), an aeration main pipe (212), and an aeration branch pipe (213). The air pump (211) is installed on the aerated grit chamber (1), and the air pump (211) is electrically connected to the controller (13), and the air outlet is connected to a connecting pipe (2111). The aeration main pipe (212) is located inside the aerated grit chamber (1) and is connected to the connecting pipe (2111). The aeration branch pipe (213) is located inside the aerated grit chamber (1), and one end is connected to the aeration main pipe (212). An aeration hole (2131) is provided on the aeration branch pipe (213).

4. The underground sewage treatment system according to claim 3, characterized in that: The scraping section (22) includes a first connecting plate (221), a first scraper (222), a second connecting plate (223), and a second scraper (224); the first connecting plate (221) is fixedly connected to the aeration main pipe (212), and the end of the first connecting plate (221) away from the aeration main pipe (212) is fixedly connected to the first scraper (222), and one end of the first scraper (222) abuts against the inner side wall of the aerated grit chamber (1); the second connecting plate (223) is fixedly connected to the aeration main pipe (212), and the end of the second connecting plate (223) away from the aeration main pipe (212) is fixedly connected to the second scraper (224), and one end of the second scraper (224) abuts against the side wall of the aerated grit chamber (1).

5. The underground sewage treatment system according to claim 4, characterized in that: The drive block (233) is fixedly connected to the first scraper (222).

6. The underground sewage treatment system according to claim 5, characterized in that: One end of the corrugated pipe (235) is fixedly connected to the drive block (233), and the other end is fixedly connected to the aerated grit chamber (1).

Images