Sewage treatment equipment with pump station water inlet end

Abstract

The application provides a sewage treatment equipment at a water inlet end of a pump station, which comprises a water inlet pipe, a circular grid and a circular screen are arranged in the water inlet pipe along a water inlet direction, a rotating shaft is rotatably connected between the circular grid and the circular screen, a plurality of groups of supports are fixedly arranged on a circumferential side wall of the rotating shaft, oil-absorbing fibers are fixedly arranged in each group of the supports, oil squeezing mechanisms capable of squeezing the oil-absorbing fibers are arranged on the corresponding supports, arc-shaped racks are fixed on outer edges of the supports, and transmission seats are fixed on back surfaces of the circular grid and front surfaces of the circular screen in the water inlet pipe. The equipment can complete sewage treatment at the water inlet end in a relatively closed space, avoid odor overflow, quickly absorb oil in the sewage, avoid clogging of the circular screen, and intermittently complete a cleaning process of filtering impurities by the circular grid and the circular screen.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a wastewater treatment device at the inlet of a pumping station. Background Technology

[0002] With societal development and industrial advancement, the environment upon which people depend for survival is deteriorating. Wastewater treatment remains crucial, as severe water pollution is impacting people's daily lives. Treating wastewater from our daily lives and production processes using wastewater treatment equipment allows for its reuse, significantly protecting the environment. Wastewater pumping stations are a vital component of the wastewater treatment process.

[0003] Currently, most pumping stations have an open channel at the inlet, which causes sewage odor to overflow and pollute the environment. The inlet is usually equipped with a bar screen to block large-volume garbage and a screen to filter out large particles of impurities in the sewage. However, when there is a lot of oil in the sewage, the oil will form an oil film that clogs the screen and affects the subsequent sewage treatment process. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a sewage treatment device for the inlet of a pumping station. This device can complete sewage treatment at the inlet in a relatively enclosed space, preventing odor from escaping. It can quickly absorb grease from the sewage, preventing clogging of the circular screen, and can also intermittently complete the cleaning process of the circular grille and the circular screen filtering out impurities.

[0005] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0006] A sewage treatment device at the inlet of a pumping station includes an inlet pipe. A circular grille and a circular screen are installed inside the inlet pipe along the water inlet direction. A rotating shaft is rotatably connected between the inlet pipe and the circular grille and screen. Multiple sets of supports are fixedly installed on the circumferential sidewall of the rotating shaft. Oil-absorbing fibers are fixedly installed inside each set of supports. An oil-squeezing mechanism for squeezing the oil-absorbing fibers is also installed on the corresponding support. An arc-shaped toothed rack is fixed to the outer edge of the supports. Transmission seats are fixed inside the inlet pipe at the back of the circular grille and the front of the circular screen. Central shafts are rotatably connected to the left and right sides of the two transmission seats. The ends of the two central shafts are rotatably connected to the circular grille and the circular screen, respectively. A shaft passes through a circular grid, and a pair of scrapers are fixed on both sides of the two central shafts. The two pairs of scrapers are respectively attached to the front surfaces of the circular grid and the circular screen. A radially movable push plate is installed on the side wall of the scraper. A radial opening is provided on the contact side of the scraper. A brush row that can move back and forth is slidably installed in the radial opening. The brush row is used to clean the holes of the circular grid and the circular screen. A drive gear that cooperates with an arc-shaped rack is rotatably connected to the front side of the transmission seat. A transmission component that is connected to the drive gear and the central shaft is installed in the transmission seat. An aeration pipe is installed at the bottom of the water inlet pipe between the circular grid and the circular screen. The top surface of the aeration pipe is provided with multiple air outlets extending into the water inlet pipe.

[0007] Preferably, a water inlet pipe extends from the rear end of the rotating shaft, and a motor is installed on the rear side of the water inlet pipe. The output end of the motor is connected to the extended end of the rotating shaft through a pair of transmission gears.

[0008] Preferably, the oil squeezing mechanism includes multiple electric push rods radially fixedly installed on the circumferential sidewall of the rotating shaft. The telescopic end of the electric push rod is fixed with an arc-shaped oil squeezing plate. The oil-absorbing fiber is installed between the arc-shaped oil squeezing plate and the outer edge of the support. The arc-shaped oil squeezing plate is provided with an oil collection cavity. The fixed surface of the arc-shaped oil squeezing plate and the oil suction limit is provided with an oil inlet mesh communicating with the oil collection cavity. An oil suction component that can suck out the oil collected in the oil collection cavity is installed on the rotating shaft.

[0009] Preferably, the oil suction assembly includes an annular corrugated tube sleeved around the electric push rod, the rotating shaft is hollow, the two ends of the annular corrugated tube are respectively connected to the rotating shaft and the oil collection chamber, and the extended end of the rotating shaft is connected to the oil suction pipe through a rotary joint.

[0010] Preferably, the transmission assembly includes a transmission cavity disposed within a transmission seat, the gear shaft of the drive gear extends into the transmission cavity, the drive end of the central shaft extends into the transmission cavity and is connected to the gear shaft via a bevel gear pair, and a ratchet and pawl assembly is mounted on the central shaft.

[0011] Preferably, the scraper has a strip-shaped opening on its side wall, and a folding airbag is installed at the inner end of the strip-shaped opening. The folding airbag can be radially extended and retracted. The extension end of the folding airbag is fixedly connected to the side wall of the pusher plate through a connecting plate. A water pumping assembly for pumping water into the folding airbag is installed in the transmission cavity.

[0012] Preferably, the water pump assembly includes a water pump pipe fixed in the transmission cavity, the central shaft is hollow, the drive end of the central shaft is connected to the end of the water pump pipe through a rotary joint, the central shaft is connected to the folding airbag through a first connecting pipe, a solenoid valve is installed in the first connecting pipe, and the end of the water pump pipe extends to the rear side of the water inlet pipe and is connected to a water pump.

[0013] Preferably, a flushing pipe is fixed on the left side of the push plate, and multiple flushing holes are provided on the right side of the flushing pipe. The flushing pipe is connected to the telescopic end of the corresponding folding airbag through a second connecting pipe. An annular cover communicating with the water inlet pipe is fixed around the water inlet pipe. The scraper and the strip-shaped opening extend into the annular cover. A discharge channel communicating with the right side of the annular cover is fixed at the top of the water inlet pipe. A spiral conveying blade is installed in the discharge channel. An arc-shaped cover for the support to rotate into is fixed at the top of the water inlet pipe.

[0014] Preferably, a radial slide bar that can slide radially back and forth is installed inside the radial opening, and a transverse slide bar that can slide laterally back and forth is also installed. The end of the transverse slide bar is elastically installed inside the radial opening, and the brush bar is fixedly installed on the side wall of the transverse slide bar. The mating sides of the radial slide bar and the transverse slide bar are respectively embedded with a first magnetic block and a second magnetic block that are misaligned.

[0015] Preferably, the end of the scraper is attached to the inner wall of the annular cover, a plurality of third magnetic blocks are embedded in the circumferential inner wall of the annular cover, a fourth magnetic block that cooperates with the third magnetic blocks is embedded in the outer end of the radial slide rod, and a spring is elastically connected to the inner end of the radial slide rod.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. The water inlet of the pump station adopts the form of an inlet pipe. Circular grilles and circular screens are installed inside the inlet pipe. By installing ring covers and arc covers, corresponding cleaning devices and oil suction devices are adapted to complete the sewage treatment at the water inlet in a relatively closed space, thus avoiding the spread of odor.

[0018] 2. By installing a rotating shaft, multiple sets of brackets, oil-absorbing fibers, and aeration pipes, the aeration pipes are connected to an aerator. Gas is discharged into the sewage through multiple air outlets at the top of the aeration pipes, causing the oil in the water to float to the surface. The motor is started, and a pair of transmission gears drive the rotating shaft to rotate, which rotates the oil-absorbing fibers below the water surface. The oil-absorbing fibers can quickly absorb the oil on the surface of the water. Multiple oil-absorbing fibers rotate intermittently to absorb oil, ensuring the continuity of oil absorption and preventing the formation of an oil film that clogs the circular screen.

[0019] 3. By installing an electric push rod and an oil-absorbing assembly, when the oil-absorbing fiber, saturated with grease, rotates above the water surface, the corresponding electric push rod is activated to move the arc-shaped oil-squeezing plate upwards. This plate engages with the outer edge of the support, squeezing out the grease from the oil-absorbing fiber and allowing it to flow downwards through the oil inlet mesh into the oil collection chamber. From there, it flows through the annular corrugated pipe into the hollow rotating shaft and is then sucked out through the oil-absorbing pipe. The oil-absorbing fiber can be made of oil-absorbing cotton or aerogel fiber. After resetting, the oil-absorbing fiber can repeatedly absorb oil and can be reused.

[0020] 4. By installing an arc-shaped rack, two drive gears, a transmission assembly, a central shaft, and a pair of scrapers, the arc-shaped rack meshes with the corresponding drive gear during the rotation of the support driven by the rotating shaft. This drives the drive gear to rotate, which in turn drives the central shaft to rotate via the bevel gear pair. This, in turn, drives the pair of scrapers to rotate, thus cleaning large-volume garbage blocking the front of the circular grid and large-particle impurities blocking the front of the circular screen, keeping the circular grid and circular screen in a highly efficient filtration state.

[0021] 5. By installing a push plate, a water pump assembly, a folding airbag, a flushing pipe, and a spiral conveyor blade, the length of the arc-shaped rack allows the scraper to rotate one revolution. After rotating to the top, the corresponding solenoid valve is opened, the water pump is started, and water is pumped into the central shaft through the water pump pipe, and then pumped into the folding airbag above through the first connecting pipe. Since the diameter of the second connecting pipe is much smaller than the diameter of the folding airbag, the inflow is greater than the outflow, the folding airbag inflates and expands, and drives the push plate to move upward through the connecting plate, pushing the garbage or impurities collected on one side of the scraper to the top. At this time, the folding airbag is in its fully expanded state, and the water flow will quickly enter the flushing pipe through the second connecting pipe, and finally be flushed out through multiple flushing holes, flushing the garbage or impurities accumulated on the push plate into the discharge channel. The garbage is then sent out by the spiral conveyor blade, realizing the automatic cleaning process.

[0022] 6. By installing a brush bar, radial slide bar, and transverse slide bar, during the rotation of the scraper, the fourth magnetic block at the end of the radial slide bar passes through multiple circumferentially arranged third magnetic blocks. Under the action of magnetic repulsion and the elasticity of the spring, the radial slide bar moves radially reciprocatingly. This causes multiple first magnetic blocks to pass back and forth through multiple second magnetic blocks. Under the action of magnetic repulsion and the spring, the transverse slide bar moves transversely reciprocatingly. This, in turn, causes the brush bar to reciprocately brush within the holes of the circular grid and circular screen, cleaning the blockage and removing the attached substances from the inner surface of the holes. Attached Figure Description

[0023] Figure 1 This is a front cross-sectional view of the present invention;

[0024] Figure 2 This is a front view of the present invention;

[0025] Figure 3 This is a left view of the circular grille proposed in this invention;

[0026] Figure 4 for Figure 1 Enlarged schematic diagram of the structure at point A in the diagram;

[0027] Figure 5 This is a cross-sectional view of the annular corrugated pipe and the arc-shaped oil extrusion plate proposed in this invention;

[0028] Figure 6 This is a top view of the transmission cavity proposed in this invention;

[0029] Figure 7 This is a cross-sectional view of the scraper proposed in this invention.

[0030] In the diagram: 1. Water inlet pipe, 2. Annular cover, 3. Third magnetic block, 4. Strip-shaped opening, 5. Circular grid, 6. Scraper, 7. Discharge channel, 8. Spiral conveyor blade, 9. Circular screen, 10. Arc-shaped cover, 11. Rotating shaft, 12. Support, 13. Arc-shaped rack, 14. Oil-absorbing fiber, 15. Arc-shaped oil-squeezing plate, 16. Transmission seat, 17. Drive gear, 18. Aeration pipe, 19. Central shaft, 20. Oil inlet screen, 21. Annular corrugated pipe, 22. Electric push rod, 23. Oil collection chamber, 24. Flushing pipe, 25. Push plate, 26. Folding airbag, 27. Second connecting pipe, 28. Transmission gear, 29. Oil suction pipe, 30. Pump water pipe, 31. Water pump, 32. Bevel gear pair, 33. Transmission chamber, 34. Ratchet and pawl assembly, 35. Radial slide bar, 36. Fourth magnetic block, 37. Transverse slide bar, 38. Radial opening, 39. Second magnetic block, 40. First magnetic block, 41. Brush. Detailed Implementation

[0031] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0033] Reference Figure 1-7 A sewage treatment device for the inlet of a pumping station includes an inlet pipe 1. A circular grille 5 and a circular screen 9 are installed inside the inlet pipe 1 along the inlet direction. An annular cover 2 connected to the inlet pipe 1 is fixed around the inlet pipe 1. An arc-shaped cover 10 for a support 12 to rotate into is fixed at the top of the inlet pipe 1. The circular grille 5 and the circular screen 9 are both installed inside the inlet pipe 1. Sewage enters through the inlet pipe 1, and large-volume garbage is filtered out by the circular grille 5 and large-particle impurities are filtered out by the circular screen 9. By installing the annular cover 2 and the arc-shaped cover 10, corresponding cleaning devices and oil suction devices are adapted, thereby completing the sewage treatment at the inlet end in a relatively closed space and preventing the spread of odor.

[0034] The inlet pipe 1 is rotatably connected to the circular grid 5 and the circular screen 9 by a rotating shaft 11. Multiple sets of brackets 12 are fixedly installed on the circumferential side wall of the rotating shaft 11. Each set of brackets 12 is fixedly installed with oil-absorbing fibers 14. The inlet pipe 1 extends from the rear end of the rotating shaft 11. A motor is installed on the rear side of the inlet pipe 1. The output end of the motor is connected to the extension end of the rotating shaft 11 through a pair of transmission gears 28. When the motor is started, the rotating shaft 11 is driven to rotate through the pair of transmission gears 28, which rotates the oil-absorbing fibers 14 to the bottom of the water surface. The oil-absorbing fibers 14 can quickly absorb the oil on the surface of the water. Multiple oil-absorbing fibers 14 rotate intermittently to absorb oil, ensuring the continuity of oil absorption and preventing the formation of an oil film that clogs the circular screen 9.

[0035] The corresponding support 12 is also equipped with an oil squeezing mechanism that can squeeze oil-absorbing fibers 14. The oil squeezing mechanism includes multiple electric push rods 22 that are radially fixed to the circumferential sidewall of the rotating shaft 11. An arc-shaped oil squeezing plate 15 is fixed to the telescopic end of the electric push rod 22. The oil-absorbing fibers 14 are installed between the arc-shaped oil squeezing plate 15 and the outer edge of the support 12. An oil collection cavity 23 is provided inside the arc-shaped oil squeezing plate 15. An oil inlet mesh 20 communicating with the oil collection cavity 23 is provided on the fixing surface of the arc-shaped oil squeezing plate 15 and the oil suction limit 14. An oil suction assembly that can suck out the oil collected in the oil collection cavity 23 is installed on the rotating shaft 11. The oil suction assembly includes a sleeve on the electric push rod 12. The annular corrugated pipe 21 surrounding the rod 22 is hollowly arranged in the rotating shaft 11. The two ends of the annular corrugated pipe 21 are connected to the rotating shaft 11 and the oil collection chamber 23 respectively. The extended end of the rotating shaft 11 is connected to the oil suction pipe 29 through a rotary joint. When the oil-absorbing fiber 14, which is full of grease, rotates away from the water surface and is directly above, the corresponding electric push rod 22 is activated to drive the arc-shaped oil-squeezing plate 15 to move upward, cooperate with the outer edge of the bracket 12, squeeze out the grease in the oil-absorbing fiber 14, and flow downward through the oil inlet net 20 into the oil collection chamber 23. Then, it flows into the hollow rotating shaft 11 through the annular corrugated pipe 21 and is sucked out through the oil suction pipe 29.

[0036] An arc-shaped rack 13 is fixed to the outer edge of the bracket 12. Transmission seats 16 are fixed inside the water inlet pipe 1 on the back of the circular grille 5 and the front of the circular screen 9. A central shaft 19 is rotatably connected to the left and right sides of each transmission seat 16. A drive gear 17 that meshes with the arc-shaped rack 13 is rotatably connected to the front of the transmission seat 16. A transmission assembly that is connected to the drive gear 17 and the central shaft 19 is installed inside the transmission seat 16. The transmission assembly includes a transmission cavity 33 within the transmission seat 16. The gear shaft of the drive gear 17 extends into the transmission cavity 33. The drive end of the central shaft 19 extends into the transmission cavity 33 and is connected to the gear shaft via a bevel gear pair 32. The 19 is equipped with a ratchet and pawl assembly 34. The ends of the two central shafts 19 are rotatably connected to the circular grid 5 and the circular screen 9, respectively. The left central shaft 19 passes through the circular grid 5. A pair of scrapers 6 are fixed on both sides of the two central shafts 19. The two pairs of scrapers 6 are respectively attached to the front surface of the circular grid 5 and the circular screen 9. When the arc-shaped rack 13 meshes with the corresponding drive gear 17, it drives the drive gear 17 to rotate. Through the bevel gear pair 32, it drives the central shaft 19 to rotate, which in turn drives the pair of scrapers 6 to rotate, cleaning the large volume of garbage blocked on the front of the circular grid 5 and the large particulate impurities blocked on the front of the circular screen 9, so that the circular grid 5 and the circular screen 9 are in a high-efficiency filtration state.

[0037] Furthermore, an aeration pipe 18 is installed at the bottom of the inlet pipe 1 between the circular grid 5 and the circular screen 9. The top surface of the aeration pipe 18 is provided with multiple air outlets extending into the inlet pipe 1. The aeration pipe 18 is connected to an aerator, and the gas is discharged into the sewage through the multiple air outlets at the top of the aeration pipe 18, causing the oil and grease in the water to float to the surface.

[0038] A radially movable push plate 25 is installed on the side wall of the scraper 6. A strip-shaped opening 4 is provided on the side wall of the scraper 6. A folding airbag 26 is installed at the inner end of the strip-shaped opening 4. The folding airbag 26 is radially retractable. The retractable end of the folding airbag 26 is fixedly connected to the side wall of the push plate 25 via a connecting plate. A water pumping assembly for pumping water into the folding airbag 26 is installed in the transmission cavity 33. The water pumping assembly includes a water pumping pipe 30 fixed in the transmission cavity 33. A hollow central shaft 19 is provided. The drive end of the central shaft 19 is connected to the end of the water pumping pipe 30 via a rotary joint. The central shaft 19 and... The folding airbags 26 are connected by a first connecting pipe, which is equipped with a solenoid valve. The end of the pump pipe 30 extends to the rear side of the inlet pipe 1 and is connected to a water pump 31. When the water pump 31 is started, water is pumped into the central shaft 19 through the pump pipe 30 and then pumped into the folding airbags 26 above through the first connecting pipe. Since the diameter of the second connecting pipe 27 is much smaller than the diameter of the folding airbags 26, the inflow is greater than the outflow. The folding airbags 26 are inflated and expanded. The connecting plate drives the push plate 25 to move upward, pushing the garbage or impurities that have gathered on one side of the scraper 6 to the top.

[0039] Furthermore, a flushing pipe 24 is fixed on the left side of the push plate 25, and multiple flushing holes are provided on the right side of the flushing pipe 24. The flushing pipe 24 is connected to the telescopic end of the corresponding folding airbag 26 through a second connecting pipe 27. The scraper 6 and the strip-shaped opening 4 both extend into the annular cover 2. A discharge channel 7 connected to the right side of the annular cover 2 is fixed at the top of the water inlet pipe 1. A spiral conveyor blade 8 is installed in the discharge channel 7. Water will quickly enter the flushing pipe 24 through the second connecting pipe 27 and finally be flushed out through multiple flushing holes, flushing the garbage or impurities accumulated on the push plate 25 into the discharge channel 7. The garbage is then sent out by the spiral conveyor blade 8, realizing an automatic cleaning process.

[0040] The scraper 6 has a radial opening 38 on its contact side. A brush 41 that can move back and forth is slidably installed in the radial opening 38. The brush 41 is used to clean the holes of the circular grid 5 and the circular screen 9. A radial sliding rod 35 that can slide radially back and forth is installed in the radial opening 38. A transverse sliding rod 37 that can slide laterally back and forth is also installed. The end of the transverse sliding rod 37 is elastically installed in the radial opening 38. The brush 41 is fixedly installed on the side wall of the transverse sliding rod 37. The contact sides of the radial sliding rod 35 and the transverse sliding rod 37 are respectively embedded with a first magnetic block 40 and a second magnetic block 39 that are staggered. The end of the scraper 6 is in contact with the inner wall of the annular cover 2. The circumferential inner wall of the annular cover 2 is embedded with... Multiple third magnetic blocks 3, and a fourth magnetic block 36 that cooperates with the third magnetic block 3 is embedded at the outer end of the radial slide rod 35. A spring is elastically connected to the inner end of the radial slide rod 35. The fourth magnetic block 36 at the end of the radial slide rod 35 passes through multiple circumferentially arranged third magnetic blocks 3. Under the action of magnetic repulsion and the elasticity of the spring, the radial slide rod 35 is driven to move radially reciprocally. This causes multiple first magnetic blocks 40 to pass through multiple second magnetic blocks 39. Under the action of magnetic repulsion and the spring, the transverse slide rod 37 is driven to move laterally reciprocally. This, in turn, drives the brush row 41 to reciprocate to brush in the holes of the circular grid 5 and the circular screen 9, cleaning the blockage and removing the attached substances on the inner surface of the holes.

[0041] Working principle: Wastewater enters through the inlet pipe 1, passes through the circular grid 5 to filter out large-volume garbage, and then passes through the circular screen 9 to filter out large particles of impurities. The aeration pipe 18 is connected to the aerator, and gas is discharged into the wastewater through multiple air outlets at the top of the aeration pipe 18, causing the oil in the water to float to the surface. The motor is started, and a pair of transmission gears 28 drive the rotating shaft 11 to rotate, rotating the oil-absorbing fiber 14 below the water surface. The oil-absorbing fiber 14 can quickly absorb the oil on the surface of the water. Multiple oil-absorbing fibers 14 rotate intermittently to absorb oil, ensuring the continuity of oil absorption and preventing the formation of an oil film that clogs the circular screen 9.

[0042] Once the oil-absorbing fiber 14, saturated with grease, rotates above the water surface, the corresponding electric push rod 22 is activated, causing the arc-shaped oil-squeezing plate 15 to move upwards and engage with the outer edge of the support 12. This squeezes out the grease from the oil-absorbing fiber 14, which then flows downwards through the oil inlet mesh 20 into the oil collection chamber 23. From there, it flows through the annular corrugated pipe 21 into the hollow rotating shaft 11 and is sucked out through the oil suction pipe 29. The oil-absorbing fiber 14 can be made of oil-absorbing cotton or aerogel fiber. After resetting, the oil-absorbing fiber 14 has a repeatable oil-absorbing effect and can be recycled.

[0043] During the rotation of the support 12 driven by the rotating shaft 11, when the arc-shaped rack 13 meshes with the corresponding drive gear 17, it drives the drive gear 17 to rotate, which in turn drives the central shaft 19 to rotate through the bevel gear pair 32, and then drives a pair of scrapers 6 to rotate, cleaning the large volume of garbage blocked on the front of the circular grid 5 and the large particles of impurities blocked on the front of the circular screen 9, so that the circular grid 5 and the circular screen 9 are in a high-efficiency filtration state. During the rotation of the scraper 6, the fourth magnetic block 36 at the end of the radial slide bar 35 passes through multiple circumferentially arranged third magnetic blocks 3, and under the action of magnetic repulsion and the elasticity of the spring, it drives the radial slide bar 35 to move radially reciprocatingly, so that multiple first magnetic blocks 40 pass through multiple second magnetic blocks 39, and under the action of magnetic repulsion and the spring, it drives the transverse slide bar 37 to move transversely reciprocatingly, which in turn drives the brush plate 41 to reciprocate to brush in the holes of the circular grid 5 and the circular screen 9, cleaning the blockage and removing the attached substances on the inner surface of the holes at the same time.

[0044] The length of the arc-shaped rack 13 allows the scraper 6 to rotate one full turn. After rotating to the top, the corresponding solenoid valve is opened, and the water pump 31 is started. Water is pumped into the central shaft 19 through the pump pipe 30, and then pumped into the upper folding airbag 26 through the first connecting pipe. Since the diameter of the second connecting pipe 27 is much smaller than the diameter of the folding airbag 26, the inflow is greater than the outflow. The folding airbag 26 inflates and expands. Through the connecting plate, the push plate 25 moves upward, pushing the garbage or impurities that have gathered on one side of the scraper 6 to the top. At this time, the folding airbag 26 is in its fully expanded state. The water flow will quickly enter the flushing pipe 24 through the second connecting pipe 27, and finally be flushed out through multiple flushing holes, flushing the garbage or impurities accumulated on the push plate 25 into the discharge channel 7. The garbage is sent out by the spiral conveyor blade 8, realizing the automatic cleaning process. The water pump 31 can realize the reset process of the folding airbag 26 and the push plate 25 by pumping water.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sewage treatment device at the inlet of a pumping station, comprising an inlet pipe (1), characterized in that, A circular grid (5) and a circular screen (9) are installed inside the water inlet pipe (1) along the water inlet direction. An annular cover (2) connected to the water inlet pipe (1) is fixed around the water inlet pipe (1). A rotating shaft (11) is rotatably connected between the water inlet pipe (1) and the circular grid (5) and the circular screen (9). Multiple sets of brackets (12) are fixedly installed on the circumferential sidewall of the rotating shaft (11). Oil-absorbing fibers (14) are fixedly installed in each set of brackets (12). An extruder that can compress the oil-absorbing fibers (14) is also installed on the corresponding bracket (12). The oiling mechanism has an arc-shaped rack (13) fixed to the outer edge of the support (12), and an arc-shaped cover (10) fixed to the top of the water inlet pipe (1) for the support (12) to rotate into. The corresponding cleaning device and oil suction device are adapted by installing the ring cover (2) and the arc-shaped cover (10). The water inlet pipe (1) is fixed with a transmission seat (16) on the back of the circular grid (5) and the front of the circular screen (9). The left and right sides of the two transmission seats (16) are rotatably connected to the central shaft (19). The two central shafts (19) are connected to the central shaft (19). The ends are rotatably connected to the circular grid (5) and the circular screen (9) respectively. The central shaft (19) on the left side passes through the circular grid (5). A pair of scrapers (6) are fixed on both sides of the two central shafts (19). The two pairs of scrapers (6) are respectively attached to the front surfaces of the circular grid (5) and the circular screen (9). A radially movable push plate (25) is installed on the side wall of the scraper (6). A radial opening (38) is provided on the contact side of the scraper (6). A brush row (41) that can move back and forth is slidably installed in the radial opening (38). The brush (41) is used to clean the holes of the circular grid (5) and the circular screen (9). The front side of the transmission seat (16) is rotatably connected to the drive gear (17) that cooperates with the arc rack (13). The transmission seat (16) is equipped with a transmission assembly that is connected to the drive gear (17) and the central shaft (19). The bottom of the water inlet pipe (1) between the circular grid (5) and the circular screen (9) is equipped with an aeration pipe (18). The top surface of the aeration pipe (18) is provided with multiple air outlets extending into the water inlet pipe (1). The scraper (6) has a strip-shaped opening (4) on its side wall. A folding airbag (26) is installed at the inner end of the strip-shaped opening (4). The folding airbag (26) can be radially extended and retracted. The extension end of the folding airbag (26) is fixedly connected to the side wall of the push plate (25) through a connecting plate. A pumping assembly that can pump water into the folding airbag (26) is installed in the transmission cavity (33).

2. The sewage treatment equipment at the inlet of a pumping station according to claim 1, characterized in that, The rear end of the rotating shaft (11) extends into a water inlet pipe (1), and a motor is installed on the rear side of the water inlet pipe (1). The output end of the motor is connected to the extension end of the rotating shaft (11) by a pair of transmission gears (28).

3. The sewage treatment equipment at the inlet of a pumping station according to claim 1, characterized in that, The oil squeezing mechanism includes multiple electric push rods (22) that are radially fixed to the circumferential sidewall of the rotating shaft (11). The telescopic end of the electric push rod (22) is fixed with an arc-shaped oil squeezing plate (15). The oil-absorbing fiber (14) is installed between the outer edge of the arc-shaped oil squeezing plate (15) and the support (12). The arc-shaped oil squeezing plate (15) is provided with an oil collection cavity (23). The fixed surface of the arc-shaped oil squeezing plate (15) and the oil-absorbing fiber (14) is provided with an oil inlet net (20) that communicates with the oil collection cavity (23). The rotating shaft (11) is equipped with an oil-absorbing component that can suck out the oil collected in the oil collection cavity (23).

4. The sewage treatment equipment at the inlet of a pumping station according to claim 3, characterized in that, The oil suction assembly includes an annular corrugated tube (21) sleeved around the electric push rod (22), the rotating shaft (11) is hollow, the two ends of the annular corrugated tube (21) are respectively connected to the rotating shaft (11) and the oil collection chamber (23), and the extended end of the rotating shaft (11) is connected to the oil suction pipe (29) through a rotary joint.

5. A sewage treatment device at the inlet of a pumping station according to claim 1, characterized in that, The transmission assembly includes a transmission cavity (33) disposed in the transmission seat (16), the gear shaft of the drive gear (17) extends into the transmission cavity (33), the drive end of the central shaft (19) extends into the transmission cavity (33) and is connected to the gear shaft via a bevel gear pair (32), and a ratchet and pawl assembly (34) is mounted on the central shaft (19).

6. The sewage treatment equipment at the inlet of a pumping station according to claim 5, characterized in that, The pump assembly includes a pump pipe (30) fixed in the transmission cavity (33), a hollow central shaft (19), the drive end of the central shaft (19) being connected to the end of the pump pipe (30) via a rotary joint, the central shaft (19) being connected to the folded airbag (26) via a first connecting pipe, a solenoid valve being installed in the first connecting pipe, and the end of the pump pipe (30) extending to the rear side of the inlet pipe (1) and connected to a water pump (31).

7. A sewage treatment device at the inlet of a pumping station according to claim 6, characterized in that, A flushing pipe (24) is fixed on the left side of the push plate (25). Multiple flushing holes are provided on the right side of the flushing pipe (24). The flushing pipe (24) is connected to the telescopic end of the corresponding folding airbag (26) through a second connecting pipe (27). An annular cover (2) communicating with the water inlet pipe (1) is fixed around the water inlet pipe (1). The scraper (6) and the strip-shaped opening (4) both extend into the annular cover (2). A discharge channel (7) communicating with the right side of the annular cover (2) is fixed at the top of the water inlet pipe (1). A spiral conveying blade (8) is installed in the discharge channel (7). An arc-shaped cover (10) for the support (12) to rotate into is fixed at the top of the water inlet pipe (1).

8. A sewage treatment device at the inlet of a pumping station according to claim 7, characterized in that, A radial slide bar (35) that can slide radially back and forth is installed in the radial opening (38), and a transverse slide bar (37) that can slide laterally back and forth is also installed. The end of the transverse slide bar (37) is elastically installed in the radial opening (38). The brush bar (41) is fixedly installed on the side wall of the transverse slide bar (37). The mating sides of the radial slide bar (35) and the transverse slide bar (37) are respectively embedded with a first magnetic block (40) and a second magnetic block (39) that are misaligned.

9. A sewage treatment device at the inlet of a pumping station according to claim 8, characterized in that, The end of the scraper (6) is attached to the inner wall of the annular cover (2). A plurality of third magnetic blocks (3) are embedded in the circumferential inner wall of the annular cover (2). A fourth magnetic block (36) that cooperates with the third magnetic block (3) is embedded in the outer end of the radial slide rod (35). A spring is elastically connected to the inner end of the radial slide rod (35).

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