Buried sewage treatment system

Abstract

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

Description

Technical Field

[0001] The present application relates to the technical field of sewage treatment, and in particular to an underground sewage treatment system. Background Art

[0002] An underground sewage treatment system is a type of sewage treatment facility that buries all or part of the sewage treatment equipment below the surface. By rationally utilizing underground space, it collects, treats, and discharges sewage. This system is primarily used in densely populated residential areas, commercial parks, tourist attractions, and rural settlements.

[0003] Existing underground sewage treatment systems usually include components such as an aerated grit chamber, aeration equipment, and a sand suction device. During use, sewage is filtered through a fine screen and then enters the aerated grit chamber through the water inlet. The aeration equipment introduces air into the aerated grit chamber to allow the sewage to fully contact with the air. On the one hand, aeration increases the dissolved oxygen content in the water and promotes the metabolic activity of microorganisms. On the other hand, the disturbance of the water flow causes sand and other inorganic particles to settle to the bottom of the tank. At this time, the sand suction device is started, and the sand suction bridge slides on the tank surface. The sand suction pump is used to suck out the sand at the bottom of the tank through the sand suction pipe. The treated sewage is discharged from the outlet, completing the entire sewage treatment process.

[0004] When using existing underground sewage treatment systems, aeration equipment is usually fixedly installed in the aeration sand settling tank. The aeration range of the aeration equipment is fixed, and it is easy for sand particles to accumulate too thickly in some areas, resulting in insufficient contact area between sewage and air and insufficient dissolved oxygen, and reduced aeration efficiency. Summary of the Invention

[0005] In order to improve aeration efficiency, the present application provides an underground sewage treatment system.

[0006] This application provides an underground sewage treatment system that adopts the following technical solutions: A buried sewage treatment system comprises an aeration grit chamber, an aeration assembly and a drive assembly; a water inlet is provided on one side of the aeration grit chamber, a water outlet is provided on the side of the aeration grit chamber away from the water inlet, a controller is installed on the aeration grit chamber, a sand suction bridge is slidably connected to the aeration grit chamber, a sand suction pump is installed on the sand suction bridge, the sand suction pump is electrically connected to the controller, the suction end of the sand suction pump is connected to a sand suction pipe, one end of the sand suction pipe is located at the bottom of the aeration grit chamber; the aeration assembly is located in the aeration grit chamber and is used for aerating the aeration grit chamber; the drive assembly is located on the aeration grit chamber and is used to control the sliding of the sand suction bridge according to the working state of the aeration assembly.

[0007] By adopting the above technical solution, sewage enters the aeration grit tank from the water inlet after being filtered through a fine screen. The operator controls the aeration component to perform aeration treatment. The driving component drives the sand suction bridge to slide along the length of the aeration grit tank according to the working status of the aeration component, avoiding the accumulation of sand particles that affects the aeration efficiency, thereby improving the aeration efficiency of the aeration component.

[0008] Optionally, the aeration assembly includes an aeration part, a scraping part and a driving part; the aeration part is located in the aeration grit tank and is used to aerate the aeration grit tank; the scraping part is located in the aeration grit tank and is used to scrape the inner wall of the aeration grit tank; the driving part is located on the aeration grit tank and is used to control the aeration part and the scraping part to move up and down in the aeration grit tank.

[0009] By adopting the above technical solution, sewage enters the aeration grit tank from the water inlet after being filtered through the fine grid. The operator controls the operation of the driving unit, which drives the aeration unit and the scraping unit to move up and down. The scraping unit scrapes away impurities attached to the inner wall of the aeration grit tank. The aeration unit increases the contact area between sewage and air, thereby improving the aeration efficiency.

[0010] Optionally, the aeration part includes an air pump, an aeration main pipe and an aeration branch pipe; the air pump is installed on the aeration grit chamber, the air pump is electrically connected to the controller, and the air outlet end is connected to a connecting pipe; the aeration main pipe is arranged in the aeration grit chamber and is connected to the connecting pipe; the aeration branch pipe is located in the aeration grit chamber, and one end is connected to the aeration main pipe, and an aeration hole is provided on the aeration branch pipe.

[0011] By adopting the above technical solution, when in use, the air pump transports 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 the branch pipe can expand the aeration coverage area, thereby improving the aeration efficiency of the sewage.

[0012] Optionally, the scraping part 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 the inner wall of the aeration 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 the side wall of the aeration grit chamber.

[0013] By adopting the above technical solution, when in use, the aeration part moves up and down driven by the driving part, 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 attached to the inner wall of the aeration grit tank, making it difficult for impurities to adhere to the inner wall of the aeration grit tank.

[0014] Optionally, the driving part includes a motor, a first reciprocating screw and a driving block; the motor is installed on the aeration and grit chamber and is electrically connected to the controller; a driving groove is opened in the aeration and grit chamber, and the first reciprocating screw is vertically arranged in the driving groove and fixedly connected to the output shaft of the motor; the driving block is located in the driving groove and is threadedly connected to the first reciprocating screw.

[0015] 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 driving 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 aeration grit chamber, thereby improving the aeration efficiency.

[0016] Optionally, the driving part also includes a protective sleeve and a bellows; a sealing plate is horizontally arranged in the driving groove, the sealing plate is fixedly connected to the aeration grit chamber, the sealing plate divides the driving groove into a driving chamber and a sealing chamber, the protective sleeve is located in the sealing chamber of the driving groove, and is sleeved in the first reciprocating screw, a sliding sleeve is vertically arranged in the protective sleeve, the sliding sleeve is slidably connected to the protective sleeve, and one end is fixedly connected to the driving block; the bellows is located in the driving chamber of the sealing plate, one end of the bellows is fixedly connected to the driving block, and the other end is fixedly connected to the aeration grit chamber.

[0017] By adopting the above technical solution, when in use, the matching structure of the protective sleeve and the sliding sleeve can prevent sewage and sand particles from entering the sealing cavity of the drive groove, thereby extending the service life of the first reciprocating screw; the bellows slides and expands and contracts as the drive block slides 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 corrosion and wear through the sealing design.

[0018] 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 arranged on the aeration grit chamber and is rotatably connected to the aeration grit chamber, the second reciprocating screw is threadedly connected to the sand suction bridge, and one end of the second reciprocating screw is fixedly connected to a gear; the guide rod is horizontally arranged on the aeration grit chamber and is rotatably connected to the aeration grit chamber, and the guide rod is slidably connected to the sand suction bridge; the sliding box is fixedly arranged on the aeration grit chamber; the bottom of the sliding sleeve is fixedly connected to a limiting ring, and the limiting ring is fixedly connected to the The protective sleeve is slidably connected, and the limiting ring and the sliding sleeve separate the protective sleeve into a water containing chamber and a sliding chamber; a spring is provided in the water containing chamber 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 separates the interior of the sliding box into a water containing chamber and a sliding chamber; the water containing chamber of the sliding box is filled with liquid and is connected to the water containing chamber of the protective sleeve through a pipe; the rack is horizontally arranged, and one end is slidably connected to the partition, and the rack is engaged with the gear.

[0019] By adopting the above technical solution, when the aeration part slides up and down driven by the driving part, the sliding sleeve slides in the protective sleeve, causing the volume of the water chamber to change, and the liquid in the water chamber of the protective sleeve flows through the pipeline to the water chamber of the sliding box, the volume of the water chamber of the sliding box increases, and the partition slides along the length direction of the sliding box, and the partition drives the rack to slide synchronously, and the rack engages with the gear to drive the second reciprocating screw to rotate, and the second reciprocating screw drives the sand suction bridge to slide along the length direction of the aeration grit chamber, so that the sand suction bridge works synchronously when the motor is working, thereby preventing sand from accumulating at the bottom of the aeration grit chamber.

[0020] Optionally, a first guide plate is provided on one side of the rack, and a guide slope is provided 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 provided on the second guide plate.

[0021] By adopting the above technical solution, when the driving block slides downward, the spring is in a compressed state, and the liquid in the water-containing chamber of the protective sleeve flows into the water-containing chamber of the sliding box through the pipeline. The volume of the water-containing chamber of the sliding box increases, and the partition slides in the direction close to the second reciprocating screw. 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 in the direction close to the sand suction bridge; when the driving block abuts against the sealing plate, the rack is disengaged from the gear, and the motor continues to work, and the motor drives the driving The moving block slides upward, the spring resets, and the liquid in the water chamber of the sliding box flows into the water chamber of the protective sleeve through the pipe. The partition slides in the direction 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 in the direction away from the sand suction bridge. When the rack resets, the driving block slides to the top of the first reciprocating screw, so that when the aeration branch pipe moves downward, the sand particles are synchronously settled to the bottom of the aeration sand settling tank along with the aeration branch pipe, and the sand suction bridge slides synchronously to realize the coordinated action of aeration and sand suction.

[0022] In summary, this application includes at least one of the following beneficial technical effects: By setting up aeration components, the aeration efficiency is improved; By setting up the driving components, the synchronous operation of aeration and sand suction can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of an embodiment of the present application; Figure 2 is a cross-sectional view of an embodiment of the present application; Figure 3 yes Figure 2 A partial enlarged view of point A in the middle; Figure 4 This is a partial cross-sectional view of an embodiment of the present application to show the partition.

[0024] Explanation of reference numerals: 1. aeration grit chamber; 11. water inlet; 12. water outlet; 13. controller; 14. sand suction bridge; 141. sand suction pump; 1411. sand suction pipe; 15. driving groove; 151. sealing plate; 2. aeration assembly; 21. aeration part; 211. air pump; 2111. connecting pipe; 212. aeration main pipe; 213. aeration branch pipe; 2131. aeration hole; 22. scraping part; 221. first connecting plate; 222. first scraper; 223. Second connecting plate; 224, second scraper; 23, driving unit; 231, motor; 232, first reciprocating screw; 233, driving block; 234, protective sleeve; 2341, sliding sleeve; 2342, limiting ring; 2343, spring; 235, bellows; 3, driving assembly; 31, second reciprocating screw; 311, gear; 32, guide rod; 33, sliding box; 34, partition; 35, rack; 351, first guide plate; 352, second guide plate. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-4 This application is described in further detail.

[0026] The present application discloses an underground sewage treatment system. Figure 1 A buried sewage treatment system includes an aeration grit chamber 1, an aeration assembly 2 and a drive assembly 3. A water inlet 11 is provided on one side of the aeration grit chamber 1, and a water outlet 12 is provided on the side of the aeration grit chamber 1 away from the water inlet 11. A controller 13 is installed on the aeration grit chamber 1. A sand suction bridge 14 is provided on the aeration grit chamber 1, and 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. The aeration assembly 2 is located in the aeration grit chamber 1, and is used for aerating the aeration grit chamber 1. The drive assembly 3 is located on the aeration 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.

[0027] After being filtered through a fine screen, sewage enters the aeration grit chamber 1 from the water inlet 11 . The operator controls the aeration assembly 2 for aeration treatment. The driving assembly 3 drives the sand suction bridge 14 to slide along the length direction of the aeration grit chamber 1 according to the working status of the aeration assembly 2 .

[0028] Reference Figure 1 and Figure 2The aeration grit chamber 1 is open at the top and has a constricted bottom. The water inlet 11 is in the shape of a rectangular hole, and the water outlet 12 is in the shape of a rectangular hole. A controller 13 is installed on the aeration grit chamber 1. The sand suction bridge 14 is vertically arranged and is slidably connected to the aeration grit chamber 1 along the length direction of the aeration grit chamber 1. The sand suction pipe 1411 is in the shape of a circular tube, and one end is located at the bottom of the aeration grit chamber 1. A drive groove 15 is provided in the aeration grit chamber 1, and the drive groove 15 is in the shape of a rectangular groove. A sealing plate 151 is horizontally arranged in the drive groove 15, and the sealing plate 151 is in the shape of a rectangular plate and is fixedly connected to the aeration grit chamber 1. The sealing plate 151 separates the drive groove 15 into a drive chamber and a sealing chamber.

[0029] Reference Figure 1 The aeration assembly 2 includes an aeration unit 21, a scraping unit 22, and a driving unit 23. The aeration unit 21 is located within the aeration grit chamber 1 and is used to aerate the chamber 1. The scraping unit 22 is located within the aeration grit chamber 1 and is used to scrape the inner wall of the chamber 1. The driving unit 23 is located on the aeration grit chamber 1 and is used to control the aeration unit 21 to slide up and down within the chamber 1.

[0030] 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 in the aeration grit chamber 1 and is electrically connected to the controller 13. The air outlet is connected to a connecting pipe 2111, which is a circular tubular shape. The aeration main pipe 212 is horizontally arranged in the aeration grit chamber 1 and is connected to the connecting pipe 2111. The aeration branch pipe 213 is located in the aeration grit chamber 1 and is a circular tubular shape. The aeration main pipe 212 is connected to the connecting pipe 2111. The aeration branch pipe 213 is located in the aeration grit chamber 1 and is connected to the aeration main pipe 212. Multiple aeration branch pipes 213 are spaced apart along the length of the aeration main pipe 212. The aeration branch pipe 213 is provided with aeration holes 2131, and multiple aeration holes 2131 are spaced apart along the length of the aeration branch pipe 213.

[0031] Reference Figure 1 and Figure 2 The scraping portion 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 has a rectangular plate shape. The first connecting plate 221 is fixedly connected to the aeration main pipe 212. The first scraper 222 is vertically arranged and has a rectangular plate shape. The first scraper 222 is fixedly connected to the end of the first connecting plate 221 away from the aeration main pipe 212, and one end of the first scraper 222 abuts the inner side wall of the aeration grit chamber 1. The second connecting plate 223 is vertically arranged and has a rectangular plate shape. The second connecting plate 223 is fixedly connected to the aeration main pipe 212. The second scraper 224 is vertically arranged and has a rectangular plate shape. The second scraper 224 is fixedly connected to the end of the second connecting plate 223 away from the aeration main pipe 212, and one end of the second scraper 224 abuts the side wall of the aeration grit chamber 1.

[0032] 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 aeration grit chamber 1 and is electrically connected to the controller 13. The first reciprocating screw 232 is vertically disposed within the drive slot 15 and is fixedly connected to the output shaft of the motor 231. The drive block 233 is rectangular and located within the drive slot 15. The drive block 233 is threadedly connected to the first reciprocating screw 232 and is fixedly connected to the first scraper 222. The protective sleeve 234 is vertically disposed within the sealed cavity of the drive slot 15 and is cylindrical in shape. The protective sleeve 234 is sleeved within the first reciprocating screw 232.

[0033] Reference Figure 2 and Figure 3 A sliding sleeve 2341 is vertically disposed within the protective sleeve 234. The sliding sleeve 2341 is cylindrical and vertically slidably connected to the protective sleeve 234. One end of the sliding sleeve 2341 is fixedly connected to the drive block 233. A limit ring 2342 is horizontally disposed at the bottom of the sliding sleeve 2341. The limit ring 2342 is annular and vertically slidably connected to the protective sleeve 234. The limit ring 2342 is fixedly connected to the sliding sleeve 2341. The limit ring 2342 and the sliding sleeve 2341 separate the protective sleeve 234 into a water-containing chamber and a sliding chamber. A spring 2343 is vertically disposed within the water-containing chamber of the protective sleeve 234. The two ends of the spring 2343 are respectively fixedly connected to the protective sleeve 234 and the limit ring 2342. The bellows 235 is located within the drive chamber of the sealing plate 151. One end of the bellows 235 is fixedly connected to the driving block 233 , and the other end is fixedly connected to the aeration grit chamber 1 .

[0034] After being filtered through the fine screen, sewage enters the aeration grit chamber 1 through the water inlet 11. The controller 13 controls the motor 231, which rotates the first reciprocating screw 232. The first reciprocating screw 232 drives the drive block 233 to slide up and down along the length of the first reciprocating screw 232. The drive block 233 drives the first and second scrapers 222 and 224 to slide synchronously, scraping away grit and sludge adhering to the inner wall of the aeration grit chamber 1. The second and second scrapers 224, 224, drive the aeration main pipe 212 to slide synchronously via the first and second connecting plates 221 and 223. The controller 13 controls the air pump 211, which delivers air to the aeration main pipe 212 through the connecting pipe 2111. The air is evenly released into the sewage through the aeration holes 2131 in the aeration branch pipe 213.

[0035] 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 34, and a rack 35. The second reciprocating screw 31 is horizontally arranged on the aeration grit chamber 1 and is rotatably connected to the aeration grit chamber 1. The second reciprocating screw 31 is threadedly connected to the sand suction bridge 14. A gear 311 is vertically provided at 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 arranged on the aeration grit chamber 1 and is in the shape of a round rod. The guide rod 32 is rotatably connected to the aeration grit chamber 1 and is slidably connected to the sand suction bridge 14 along the length of the guide rod 32.

[0036] The sliding box 33 is horizontally arranged on the aeration grit chamber 1 and is in the shape of a rectangular box. The sliding box 33 is fixedly connected to the aeration grit chamber 1. The partition 34 is vertically arranged in the sliding box 33 and is in the shape of a rectangular plate. The partition 34 is slidably connected to the sliding box 33 along the length of the sliding box 33. The partition 34 divides the interior of the sliding box 33 into a water chamber and a sliding chamber. The water chamber of the sliding box 33 is filled with liquid and is connected to the water chamber of the protective sleeve 234 through a pipe. The rack 35 is horizontally arranged, and one end is slidably connected to the partition 34 along the length of the partition 34. The rack 35 is engaged with the gear 311. A first guide plate 351 is provided on one side of the rack 35. The first guide plate 351 is provided with a guide slope. The guide slope is inclined from the side away from the screw to the side close to the screw in the direction 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 close to the lead screw toward the partition 34 .

[0037] When the driving block 233 slides downward, the driving block 233 drives the sliding sleeve 2341 and the limiting ring 2342 to slide downward, the limiting ring 2342 squeezes the spring 2343, the spring 2343 is in a compressed state, and the liquid in the water cavity of the protective sleeve 234 flows through the pipeline to the water cavity of the sliding box 33. The volume of the water cavity of the sliding box 33 increases, and the partition 34 slides toward the direction close to the second reciprocating screw 31. The partition 34 drives the rack 35 to slide synchronously, and the rack 35 drives the gear 311 to rotate. The gear 311 drives the sand suction bridge 14 to slide along the length direction of the aeration grit chamber 1.

[0038] 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 toward the sand suction bridge 14. When the driving block 233 abuts against the sealing plate 151, the rack 35 is disengaged from the gear 311.

[0039] The motor 231 continues to work, and the motor 231 drives the driving block 233 to slide upward, and the spring 2343 resets. The liquid in the water chamber of the sliding box 33 flows into the water chamber of the protective sleeve 234 through the pipeline, and the partition 34 slides in the direction away from the second reciprocating screw 31. When the guide slope of the second guide plate 352 abuts against the sliding box 33, the second guide plate 352 drives the rack 35 to slide in the direction away from the sand suction bridge 14. When the rack 35 resets, the driving block 233 slides to the top of the first reciprocating screw 232.

[0040] The implementation principle of an underground sewage treatment system in the embodiment of the present application is as follows: After being filtered through the fine screen, sewage enters the aeration grit chamber 1 through the water inlet 11. The controller 13 controls the motor 231, which rotates the first reciprocating screw 232. The first reciprocating screw 232 drives the drive block 233 to slide up and down along the length of the first reciprocating screw 232. The drive block 233 drives the first and second scrapers 222 and 224 to slide synchronously, scraping away grit and sludge adhering to the inner wall of the aeration grit chamber 1. The second and second scrapers 224, 224, drive the aeration main pipe 212 to slide synchronously via the first and second connecting plates 221 and 223. The controller 13 controls the air pump 211, which delivers air to the aeration main pipe 212 through the connecting pipe 2111. The air is evenly released into the sewage through the aeration holes 2131 in the aeration branch pipe 213.

[0041] When the first reciprocating screw 232 drives the driving block 233 to slide downward, the driving block 233 drives the sliding sleeve 2341 and the limiting ring 2342 to slide downward, the limiting ring 2342 squeezes the spring 2343, the spring 2343 is in a compressed state, the liquid in the water cavity of the protective sleeve 234 flows through the pipeline to the water cavity of the sliding box 33, the volume of the water cavity of the sliding box 33 increases, the partition 34 slides toward the direction close to 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 direction of the aeration grit chamber 1.

[0042] 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 toward the sand suction bridge 14. When the driving block 233 abuts against the sealing plate 151, the rack 35 is disengaged from the gear 311.

[0043] The motor 231 continues to work, and the motor 231 drives the driving block 233 to slide upward, and the spring 2343 resets. The liquid in the water chamber of the sliding box 33 flows into the water chamber of the protective sleeve 234 through the pipeline, and the partition 34 slides in the direction away from the second reciprocating screw 31. When the guide slope of the second guide plate 352 abuts against the sliding box 33, the second guide plate 352 drives the rack 35 to slide in the direction away from the sand suction bridge 14. When the rack 35 resets, the driving block 233 slides to the top of the first reciprocating screw 232.

[0044] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. An underground sewage treatment system, characterized by: The invention comprises an aeration grit chamber (1), an aeration assembly (2) and a driving assembly (3); a water inlet (11) is provided on one side of the aeration grit chamber (1), a water outlet (12) is provided on a side of the aeration grit chamber (1) away from the water inlet (11), a controller (13) is installed on the aeration grit chamber (1), a sand suction bridge (14) is slidably connected to the aeration grit chamber (1), a sand suction pump (141) is installed on the sand suction bridge (14), and the sand suction pump (141) is connected to the aeration grit chamber (1). The controller (13) is electrically connected, 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 aeration grit chamber (1); the aeration component (2) is located in the aeration grit chamber (1) and is used to aerate the aeration grit chamber (1); the driving component (3) is located on the aeration grit chamber (1) and is used to control the sliding of the sand suction bridge (14) according to the working state of the aeration component (2).

2. The underground sewage treatment system according to claim 1, characterized in that: The aeration assembly (2) comprises an aeration portion (21), a scraping portion (22) and a driving portion (23); the aeration portion (21) is located in the aeration grit chamber (1) and is used for aerating the aeration grit chamber (1); the scraping portion (22) is located in the aeration grit chamber (1) and is used for scraping the inner side wall of the aeration grit chamber (1); the driving portion (23) is located on the aeration grit chamber (1) and is used for controlling the aeration portion (21) and the scraping portion (22) to move up and down in the aeration grit chamber (1).

3. The underground sewage treatment system according to claim 2, characterized in that: The aeration section (21) comprises an air pump (211), an aeration main pipe (212) and an aeration branch pipe (213); the air pump (211) is installed on the aeration grit chamber (1), the air pump (211) is electrically connected to the controller (13), and the air outlet end is connected to a connecting pipe (2111); the aeration main pipe (212) is arranged in the aeration grit chamber (1) and is connected to the connecting pipe (2111); the aeration branch pipe (213) is located in the aeration 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 portion (22) comprises 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), one 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 aeration grit chamber (1); the second connecting plate (223) is fixedly connected to the aeration main pipe (212), one 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 aeration grit chamber (1).

5. The underground sewage treatment system according to claim 4, characterized in that: The driving portion (23) includes a motor (231), a first reciprocating screw (232) and a driving block (233); the motor (231) is mounted on the aeration grit chamber (1) and is electrically connected to the controller (13); a driving slot (15) is provided in the aeration grit chamber (1), the first reciprocating screw (232) is vertically arranged in the driving slot (15) and is fixedly connected to the output shaft of the motor (231); the driving block (233) is located in the driving slot (15) and is threadedly connected to the first reciprocating screw (232), and the driving block (233) is fixedly connected to the first scraper (222).

6. The underground sewage treatment system according to claim 5, characterized in that: The driving portion (23) further comprises a protective sleeve (234) and a bellows (235); a sealing plate (151) is horizontally arranged in the driving groove (15), the sealing plate (151) is fixedly connected to the aeration grit chamber (1), and the sealing plate (151) separates the driving groove (15) into a driving chamber and a sealing chamber, the protective sleeve (234) is located in the sealing chamber of the driving groove (15), and is sleeved on the first reciprocating screw (232). ), a sliding sleeve (2341) is vertically arranged in the protective sleeve (234), the sliding sleeve (2341) is slidably connected to the protective sleeve (234), and one end of the sliding sleeve is fixedly connected to the driving block (233); the bellows (235) is located in the driving cavity of the sealing plate (151), one end of the bellows (235) is fixedly connected to the driving block (233), and the other end is fixedly connected to the aeration grit chamber (1).

7. The underground sewage treatment system according to claim 6, characterized in that: The driving assembly (3) comprises a second reciprocating screw (31), a guide rod (32), a sliding box (33), a partition (34) and a rack (35); the second reciprocating screw (31) is horizontally arranged on the aeration grit chamber (1) and is rotatably connected to the aeration grit chamber (1); the second reciprocating screw (31) is threadedly connected to the sand suction bridge (14); one end of the second reciprocating screw (31) is fixedly connected to a gear (311); the guide rod (32) is horizontally arranged on the aeration grit chamber (1) and is rotatably connected to the aeration grit chamber (1); the guide rod (32) is slidably connected to the sand suction bridge (14); the sliding box (33) is fixedly arranged on the aeration grit chamber (1); the bottom of the sliding sleeve (2341) is fixedly connected to a limiting ring (2342), and the limiting ring (2342) is connected to the protective sleeve. The protective sleeve (234) is slidably connected to the protective sleeve (234), and the limiting ring (2342) and the sliding sleeve (2341) separate the protective sleeve (234) into a water containing chamber and a sliding chamber; a spring (2343) is provided in the water containing chamber of the protective sleeve (234), and 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 in the sliding box (33) and is slidably connected to the sliding box (33), and the partition (34) separates 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) through a pipe; the rack (35) is horizontally arranged, and one end is slidably connected to the partition (34), and the rack (35) is engaged with the gear (311).

8. The underground sewage treatment system according to claim 7, characterized in that: 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).

Images