Pulse agitated sewage conditioning tank

Abstract

The present application relates to a kind of pulse stirring type sewage regulating tank, including primary filter unit, secondary filter unit and several pulse stirring devices from upstream side to downstream side, primary filter unit includes liftable grid cylinder, grid cylinder top is open, for receiving the sewage entering regulating tank, grid cylinder side wall is uniformly densely clothed with through-hole, for filtering sewage;Secondary filter unit includes grid plate, grid plate is perpendicular to the horizontal center axis of regulating tank;Pulse stirring device includes guide rod one, lifting chain one and stirrer body, stirrer body is slidably connected guide rod one, and stirrer body is lifted by lifting chain one;Stirrer body includes side-by-side arranged flow guide cavity and gas chamber cavity, flow guide cavity bottom is separated from gas chamber cavity, stirrer body bottom is open, sewage enters gas chamber cavity by flow guide cavity, gas chamber cavity top is connected with inlet pipe, for gas supply to gas chamber cavity, gas can return to regulating tank by flow guide cavity, form gas release, agitate water body.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of sewage conditioning treatment, and particularly relates to a pulse stirring type sewage conditioning tank. BACKGROUND

[0002] The sewage conditioning tank is applied to the front end of a sewage treatment system. The sewage collected by a pipe network first enters the sewage conditioning tank, and the sewage after conditioning can enter the subsequent biochemical treatment system. The sewage conditioning tank has two main functions: one is to buffer the inflow, to cut peaks and fill valleys, and to prevent large fluctuations in system water volume; the other is to homogenize and stabilize the water quality. The sewage conditioning tank needs to be equipped with a stirring device for stirring the sewage and preventing sludge deposition.

[0003] The current stirring device generally adopts a propeller type stirrer or a perforated pipe aeration stirring method. The propeller type stirrer relies on the rotation of the propeller to stir the sewage. The propeller is easy to be entangled by fibrous impurities, which can easily cause the motor to burn out. The driving motor of the propeller type stirrer uses a submersible motor, which has a high failure rate and a short service life. Generally, it needs to be overhauled or replaced every 1-2 years, and the cost is high.

[0004] The perforated pipe aeration stirring is to fixedly install a perforated aeration pipe with small holes at the bottom of the conditioning tank and set up a fan for air supply. However, the small holes are easy to be blocked, and the water needs to be pumped out and down to the bottom of the tank for maintenance during maintenance. Moreover, due to the deep sewage conditioning tank, toxic and harmful gases are easy to accumulate at the bottom, which brings danger to the maintenance personnel.

[0005] In addition, the upstream side of the traditional sewage conditioning tank is generally provided with a screen or filter screen to intercept solid impurities, but the filtering effect is limited, causing the internal or bottom of the sewage conditioning tank to easily deposit solid pollutants, affecting the stable operation of the subsequent section. SUMMARY

[0006] In view of the above problems, the present application provides a pulse stirring type sewage conditioning tank, which comprises a primary filter unit, a secondary filter unit and a plurality of pulse stirring devices from the upstream side to the downstream side. The primary filter unit comprises a liftable grid cylinder, the top of which is open for receiving sewage entering the conditioning tank, and the side wall of which is uniformly and densely provided with through holes for filtering the sewage. The secondary filter unit comprises a grid plate perpendicular to the horizontal center axis of the conditioning tank for filtering the sewage again.

[0007] The pulse stirring device includes a guide rod, a lifting chain, and a stirrer body. The stirrer body is slidably connected to the guide rod and is lifted by the lifting chain. The stirrer body includes a flow guide chamber and an air chamber arranged side by side. The bottom of the flow guide chamber is separated from the air chamber. The bottom of the stirrer body is open. Wastewater enters the air chamber through the flow guide chamber. The top of the air chamber is connected to an air inlet pipe for supplying air to the air chamber. The gas can return to the regulating tank through the flow guide chamber, forming a gas release and stirring the water.

[0008] Optionally, the regulating tank is a horizontal cylinder with an inlet pipe at the top of the upstream end. The outlet of the inlet pipe is located above the grid cylinder, and the part of the inlet pipe inside the regulating tank is inclined downward, which helps to increase the initial velocity of the incoming water.

[0009] Optionally, the primary filtration unit includes a grid cylinder, a support platform, and at least one guide rod. The grid cylinder is a vertical cylindrical shape with a closed bottom. The side of the support platform is fixedly connected to the side of the upstream end of the regulating tank, and the upper surface of the support platform can support the bottom of the grid cylinder, thereby limiting the lower limit position of the grid cylinder.

[0010] The second guide rod is set vertically, with its bottom end fixed to the upper surface of the first support platform and its top end protruding through the regulating pool; a guide ring is provided at the top of the outer side of the grid cylinder, and the guide ring corresponds one-to-one with the second guide rod. The guide ring is sleeved on the outside of the second guide rod and plays a positioning role, so that the grid cylinder moves up and down along the second guide rod.

[0011] Optionally, at least one lifting chain II is connected to the top of the grid cylinder. The top end of the lifting chain II extends out of the regulating pool and is then connected to an external fixed pulley and a winch. The grid cylinder rises and falls by winding and unwinding the lifting chain II. When the grid cylinder moves, a guide ring is sleeved on a guide rod II to ensure that the grid cylinder moves along the guide rod II.

[0012] Optionally, the primary filtration unit further includes a cleaning device, which includes a cleaning head and a lifting rod. The cleaning head is shaped like a triangular prism and has an arc in the lateral direction, so that the cleaning head is concentrically arranged with the grid cylinder. The longitudinal section of the cleaning head is similar to a right triangle, with one right-angled side horizontal and the other right-angled side vertical, and the side is an arc protruding into the cleaning head.

[0013] The bottom of the lifting rod connects to the center of the top surface of the cleaning head, and the top of the lifting rod extends out of the adjustment pool. The lifting rod can move the cleaning head up and down and left and right.

[0014] Optionally, the secondary filtration unit includes a grid plate, a drive unit, and a cleaning unit. The grid plate is circular and has uniformly densely distributed through holes. The grid plate is concentrically arranged with the regulating tank. The drive unit includes a support component, a hydraulic cylinder, and a traction rod. The traction rod is vertically arranged and its top is connected to the telescopic end of the hydraulic cylinder, and its bottom is connected to the downstream side of the grid plate. The hydraulic cylinder is mounted on the support component and can move along the support component. The support component and the hydraulic cylinder drive the grid plate to rotate through the traction rod.

[0015] One end of the cleaning section is connected to the support component, and the other end contacts the upstream side of the bar screen. The support component drives the cleaning section to move, which can clean the dirt attached to the upstream side of the bar screen and improve the filtration efficiency.

[0016] Further optionally, the support component is located above the regulating pool and includes a horizontally arranged and parallel intermediate track, an upstream track, and a downstream track. The intermediate track is directly above the grid plate and perpendicular to the central axis of the regulating pool. The downstream track is directly above the traction rod and is slidably connected to the downstream track by a hydraulic cylinder. The upstream track is directly above the cleaning section and is slidably connected to the upstream track.

[0017] A control block is slidably connected on the middle track. The control block is connected to the hydraulic cylinder through connecting rod one, and to the cleaning part through connecting rod two, so that the control block drives the hydraulic cylinder and the cleaning part to move synchronously.

[0018] Optionally, the top of the regulating pool is provided with a slot corresponding to the upstream and downstream tracks, and the inside of the regulating pool at the slot is connected to the outside, so that the telescopic end of the hydraulic cylinder and the traction rod can move back and forth along the corresponding slot, and the cleaning part can move back and forth along the corresponding slot.

[0019] Alternatively, the traction rod is always kept vertical, and the bottom end of the traction rod is detachably connected to at least one through hole of the grid plate, with the position of the bottom end of the traction rod connected to the grid plate located on the radius of the grid plate.

[0020] Optionally, the outer shell of the stirrer body is cubic in shape, with the bottom of the outer shell open. The upper middle part of the upstream side of the outer shell is the upstream side of the guide cavity, the downstream side of the guide cavity is the upstream side of the air chamber, and the downstream side of the air chamber is the downstream side of the outer shell.

[0021] The top surface of the outer shell covers the rear half of the top of the guide cavity (i.e., the downstream side part) and the top of the air chamber cavity. A partition is provided between the upstream side and the downstream side of the guide cavity. One end of the top surface of the outer shell is connected to the top of the partition, and the other end is connected to the downstream side of the outer shell, so that the front half of the top of the guide cavity (i.e., the upstream side part) is open, and the rear half of the top of the guide cavity is connected to the top of the air chamber cavity.

[0022] An air inlet is provided on the top surface of the outer casing corresponding to the air chamber, for connecting the air inlet pipe.

[0023] Optionally, the bottom of the partition plate is spaced from the bottom surface of the flow guide cavity, so that the internal space of the flow guide cavity is divided into two regions by the partition plate, forming a baffle channel.

[0024] Optionally, at least one limiting plate is provided on the exterior of the downstream side of the housing. The limiting plate has a through hole, through which a guide rod is sleeved. A lifting chain is connected to the top surface of the housing. When the lifting chain raises and lowers the agitator body, the agitator body moves up and down along the guide rod via the limiting plate. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the pulse-stirred wastewater equalization tank.

[0026] Figure 2 This is a schematic diagram of the stirrer body;

[0027] Figure 3 This is a schematic diagram of a grid cylinder;

[0028] Figure 4 This is a schematic diagram of the cleaning device;

[0029] Figure 5 A schematic diagram showing the fit between the support component and the grating plate;

[0030] Figure 6 A top view of the slots at the top of the regulating pool corresponding to the upstream and downstream tracks.

[0031] In the attached diagram, 1-grid cylinder, 2-support platform one, 3-guide rod one, 4-guide rod two, 5-lifting chain one, 6-lifting chain two, 7-water inlet pipe, 8-grid plate, 9-agitator body, 10-guide cavity, 11-air chamber, 12-guide ring, 13-cleaning head, 14-lifting rod, 15-support component, 16-hydraulic cylinder, 17-traction rod, 18-cleaning section, 19-intermediate track, 20-upstream track, 21-downstream track, 22-control block, 23-connecting rod one, 24-connecting rod two, 25-grooving, 26-connecting rod three, 27-cleaning rake, 28-static pressure level gauge, 29-outer shell, 30-partition plate, 31-air inlet, 32-purge port, 33-air inlet pipe, 34-limiting plate, 35-support platform two, 36-purge pipe. Detailed Implementation

[0032] This embodiment provides a pulse-stirred wastewater equalization tank, such as... Figures 1-6As shown, from upstream to downstream, the system includes a primary filtration unit, a secondary filtration unit, and several pulse stirring devices. The primary filtration unit includes a liftable bar screen 1 with an open top for receiving wastewater entering the equalization tank. The sidewall of the bar screen 1 is evenly covered with through holes for filtering wastewater. The secondary filtration unit includes a bar screen 8, which is perpendicular to the horizontal central axis of the equalization tank for further filtering of wastewater.

[0033] The pulse stirring device includes a guide rod 3, a lifting chain 5, and a stirrer body 9. The stirrer body 9 is slidably connected to the guide rod 3 and is lifted by the lifting chain 5. The stirrer body 9 includes a guide cavity 10 and an air chamber 11 arranged side by side. The bottom of the guide cavity 10 is separated from the air chamber 11. The bottom of the stirrer body 9 is open. Wastewater enters the air chamber 11 through the guide cavity 10. The top of the air chamber 11 is connected to an air inlet pipe 33 for supplying air to the air chamber 11. The gas can return to the regulating tank through the guide cavity 10, forming gas release and stirring the water.

[0034] Optionally, the regulating tank is a horizontal cylinder with a horizontal central axis. An inlet pipe 7 is provided at the top of the upstream end of the regulating tank. The outlet end of the inlet pipe 7 is located above the bar screen 1. The part of the inlet pipe 7 inside the regulating tank is inclined downward, which helps to increase the initial velocity of the inlet water and ensures that even with a small amount of water, the sewage can flow smoothly into the bar screen 1. For example, the inclination angle is 5-10 degrees.

[0035] Optionally, the primary filtration unit includes a grid cylinder 1, a support platform 2, and at least one guide rod 4. The grid cylinder 1 is a vertical cylindrical shape with a closed bottom. The side of the support platform 2 is fixedly connected to the side of the upstream end of the regulating tank, and the upper surface of the support platform 2 can support the bottom of the grid cylinder 1, thereby limiting the lower limit position of the grid cylinder 1.

[0036] The second guide rod 4 is set vertically, with its bottom end fixed to the upper surface of the first support platform 2 and its top end protruding through the adjustment pool; the top of the outer side of the grid cylinder 1 is provided with a guide ring 12, which corresponds one-to-one with the second guide rod 4. The guide ring 12 is sleeved on the outer side of the second guide rod 4 and plays a positioning role, so that the grid cylinder 1 moves up and down along the second guide rod 4.

[0037] Further optionally, the central axis of the bar screen 1 is vertical and is on the same vertical plane as the central axis of the regulating tank; the outlet end of the water inlet pipe 7 is retractable, so that when the bar screen 1 is raised or lowered, the outlet end can retract to avoid obstructing the raising or lowering of the bar screen 1.

[0038] Optionally, at least one lifting chain 6 is connected to the top of the grid cylinder 1. The top end of the lifting chain 6 passes through the adjustment pool and is then connected to an external fixed pulley and a winch. The grid cylinder 1 rises and falls by winding and unwinding the lifting chain 6. When the grid cylinder 1 moves, the guide ring 12 is sleeved on the guide rod 4 to ensure that the grid cylinder 1 moves along the guide rod 4.

[0039] Preferably, the grid cylinder 1 is equipped with two lifting chains, each lifting chain being equipped with a fixed pulley and a winch. The two lifting chains lift synchronously, smoothly pulling the grid cylinder 1 up and down.

[0040] An opening is provided at the top of the regulating pool corresponding to the position of the grid cylinder 1 and the guide rod 4, allowing the grid cylinder 1, the lifting chain 6 and the guide rod 4 to pass through the regulating pool. An openable cover can also be provided at this opening.

[0041] The liftable screen cylinder 1 of the present invention has oblong or round holes evenly distributed on its sidewalls as a coarse filter to intercept larger solid debris in sewage. When the intercepted debris fills the screen cylinder 1, it can be lifted for cleaning. Preferably, two parallel guide rods and two guide rings are provided, with the guide rings positioned on both sides of the screen cylinder and opposite to each other, which facilitates the smooth lifting and lowering of the screen cylinder.

[0042] When filtering wastewater, if solid debris covers the side of the screen cylinder 1, it will block the side openings, slowing down the filtration speed. If the influent flow rate is not reduced, wastewater may overflow the screen cylinder 1. Frequently raising the screen cylinder 1 not only increases the workload but also reduces the working time. To solve the above problems, the present invention provides the following solution.

[0043] Optionally, the primary filtration unit further includes a cleaning device, which includes a cleaning head 13 and a lifting rod 14. The cleaning head 13 is shaped like a triangular prism and has an arc in the horizontal direction (i.e., the horizontal direction), so that the cleaning head 13 is concentrically arranged with the grid cylinder 1. The longitudinal section of the cleaning head 13 is similar to a right triangle, with one right-angled side horizontal and the other right-angled side vertical, and the side is an arc protruding into the cleaning head 13.

[0044] The bottom of the lifting rod 14 is connected to the center of the horizontal top surface of the cleaning head 13, and the top of the lifting rod 14 extends out of the adjustment pool. The lifting rod 14 can drive the cleaning head 13 to move up and down and left and right.

[0045] Because the cleaning head 13 is concentrically positioned with the bar screen 1, its vertical side can fit against the inner wall of the bar screen 1. By controlling the lifting rod 14 outside the regulating tank, the cleaning head 13 can be moved up and down and rotated along the inner wall of the bar screen 1. A level gauge is installed inside the bar screen 1. During normal filtration, the inflow rate of the bar screen 1 equals the outflow rate, and the liquid level inside the bar screen 1 remains essentially constant. When a solid layer (usually thin flakes or clumps of fibrous debris) covers a portion of the inner wall of the bar screen 1, the liquid level rises rapidly. At this time, the cleaning head 13 can be controlled to clean the inner wall of the bar screen 1. The cleaning head 13 descends close to the inner wall of the bar screen 1. The bottom edge of the cleaning head 13 removes the debris adhering to the inner wall of the bar screen 1. Some debris is pressed and moved by the cleaning head 13, changing its attachment state; some debris moves along the curved, inclined side of the cleaning head 13, that is, from the inner wall of the bar screen 1, into the interior of the screen, and re-enters the wastewater. The shape of the cleaning head 13 not only facilitates the cleaning of dirt adhering to the inner wall of the cylinder, but also makes it less prone to dirt accumulation. By lifting the cleaning head 13 with the lifting rod 14, the water force washes the cleaning head 13 downwards, and the cleaning head 13, which is wider at the top and narrower at the bottom, is easily cleaned. Even if a small amount of dirt is carried, it can be easily cleaned after the cleaning head 13 is lifted to the outside of the equalization tank.

[0046] Optionally, the secondary filtration unit includes a grid plate 8, a drive unit, and a cleaning unit 18. The grid plate 8 is circular and has uniformly densely distributed through holes. The grid plate 8 is concentrically arranged with the regulating tank. The drive unit includes a support component 15, a hydraulic cylinder 16, and a pulling rod 17. The pulling rod 17 is vertically arranged and its top is connected to the telescopic end of the hydraulic cylinder 16, and its bottom is connected to the downstream side of the grid plate 8. The hydraulic cylinder 16 is mounted on the support component 15 and can move along the support component 15. The support component 15 and the hydraulic cylinder 16 drive the grid plate 8 to rotate through the pulling rod 17.

[0047] One end of the cleaning section 18 is connected to the support member 15, and the other end contacts the upstream side of the grid plate 8. The support member 15 drives the cleaning section 18 to move, which can clean the dirt attached to the upstream side of the grid plate 8 and improve the filtration efficiency.

[0048] Further optionally, the inner wall of the regulating pool is provided with a groove corresponding to the position of the grid plate 8, and the edge of the grid plate 8 is engaged in the groove to fix the grid plate 8, so that the grid plate 8 can rotate about the central axis of the regulating pool.

[0049] On the upstream side of the grating plate 8, a rubber gasket is provided along the edge of the grating plate 8. The rubber gasket is circular, with its outer side fixed to the inner wall of the regulating pool and its inner side pointing towards the central axis of the regulating pool. The upstream side of the rubber gasket receives the incoming water, and its downstream side is attached to the upstream side of the edge of the grating plate 8. The sheet-like rubber gasket prevents a large amount of incoming water from entering the groove, ensuring that the grating plate 8 rotates smoothly.

[0050] The bar screen 8 covers the longitudinal section of the equalization tank. The wastewater filtered by the bar screen cylinder 1 flows horizontally and undergoes fine filtration through the bar screen 8, intercepting smaller solid debris. The bar screen 8 can rotate, preventing excessive dirt from adhering to the upstream side of the bar screen 8 and extending the cleaning cycle.

[0051] Further optionally, the support component 15 is located above the regulating pool and includes a horizontally arranged and parallel intermediate track 19, an upstream track 20, and a downstream track 21. The intermediate track 19 is located directly above the grid plate 8 and perpendicular to the central axis of the regulating pool. The downstream track 21 is located directly above the traction rod 17. The hydraulic cylinder 16 is slidably connected to the downstream track 21. The upstream track 20 is located directly above the cleaning section 18 and is slidably connected to the upstream track 20.

[0052] A control block 22 is slidably connected on the intermediate track 19. The control block 22 is connected to the hydraulic cylinder 16 through a connecting rod 1 23, and the control block 22 is connected to the cleaning part 18 through a connecting rod 24, so that the control block 22 drives the hydraulic cylinder 16 and the cleaning part 18 to move synchronously.

[0053] The movement of the control block 22 on the intermediate track 19 can be electromagnetically controlled. The movement of the hydraulic cylinder 16 on the downstream track 21 and the movement of the cleaning unit 18 on the upstream track 20 can be directly driven by the control block 22 through connecting rod 1 23 and connecting rod 24 without additional drive devices, thus saving energy. Both ends of the intermediate track 19, the upstream track 20 and the downstream track 21 are supported by support columns. The bottom of the support columns can be supported on the side wall of the regulating pool or on the ground outside the regulating pool.

[0054] Optionally, the top of the regulating pool is provided with a slot 25 corresponding to the upstream track 20 and the downstream track 21 respectively. The inside of the regulating pool at the slot 25 is connected to the outside, so that the telescopic end of the hydraulic cylinder 16 and the traction rod can move back and forth along the corresponding slot 25, and the cleaning part 18 can move back and forth along the corresponding slot 25.

[0055] Optionally, the traction rod 17 is always kept vertical, and the bottom end of the traction rod 17 is detachably connected to at least one through hole of the grid plate 8. The position where the bottom end of the traction rod 17 is connected to the grid plate 8 is on the radius of the grid plate 8. The straight distance from the center of the grid plate 8 to the bottom end of the traction rod 17 is reasonably designed according to the actual size of the grid plate 8 and the force required for the rotation of the grid plate 8.

[0056] In this invention, the rotation of the grating plate 8 abandons the traditional motor-driven method, where the motor is submerged in sewage, making it inconvenient to use and maintain, and resulting in a short lifespan. This invention uses a mechanical drive system, where the control block 22 adjusts the horizontal position of the traction rod via the connecting rod 23 and the hydraulic cylinder 16, while the hydraulic cylinder 16 adjusts the vertical position of the traction rod. These two directions work together to cause the bottom end of the traction rod to rotate in a circle around the center of the grating plate 8, thereby driving the grating plate 8 to rotate.

[0057] Further optionally, the cleaning section 18 includes a connecting rod 26 and a plurality of cleaning rakes 27. The connecting rod 26 is vertically arranged, with its top end slidably connected to the upstream track 20 and its bottom end connected in parallel with a plurality of cleaning rakes 27. The cleaning rakes 27 can move back and forth along the length of the upstream track 20 to clean the dirt attached to the upstream side of the grid plate 8.

[0058] The cleaning rake 27 includes a main rod and several rake teeth evenly distributed on the main rod. The rake teeth are horizontal or inclined and face the upstream side of the cleaning grid plate 8. The bottom end of the connecting rod 26 is connected to the middle of the main rod.

[0059] In a specific implementation, the main rod is inclined, and several main rods are reasonably and evenly arranged on the upstream side of the grid plate 8. Since the cleaning part 18 has a limited range of movement along the upstream track 20 (it needs to be coordinated with the movement of the traction rod), one cleaning rake 27 cannot clean the entire grid plate 8. Therefore, multiple cleaning rakes 27 are set. The main rod of the cleaning rake 27 has a certain inclination angle (but all are parallel to the upstream side), which makes it easy to reasonably arrange the positions of multiple cleaning rakes 27. Thus, the cleaning of the entire upstream side can be completed with a small range of movement of the cleaning part 18, and the cycle of downtime cleaning of the grid plate 8 is extended.

[0060] Optionally, a hydrostatic level gauge 28 is installed on the upstream and downstream sides of the grating plate 8 to measure the liquid level height on both the upstream and downstream sides of the grating plate 8. When the grating plate 8 becomes blocked, the liquid level difference between the upstream and downstream sides will change. When the liquid level difference reaches a set value, the alarm connected to the hydrostatic level gauge 28 will sound, indicating that the machine needs to be stopped and the grating plate 8 needs to be cleaned.

[0061] Optionally, the outer shell 29 of the stirrer body 9 is cubic in shape, the bottom of the outer shell 29 is open, the upper middle part of the upstream side of the outer shell 29 is the upstream side of the guide cavity 10, the downstream side of the guide cavity 10 is the upstream side of the air chamber 11, and the downstream side of the air chamber 11 is the downstream side of the outer shell 29.

[0062] The top surface of the outer shell 29 covers the rear half of the top of the guide cavity 10 (i.e., the downstream side part) and the top of the air chamber 11. A partition 30 is provided between the upstream side and the downstream side of the guide cavity 10. One end of the top surface of the outer shell 29 is connected to the top of the partition 30, and the other end is connected to the downstream side of the outer shell 29, so that the front half of the top of the guide cavity 10 (i.e., the upstream side part) is open, and the rear half of the top of the guide cavity 10 is connected to the top of the air chamber 11.

[0063] The top surface of the outer casing 29 is provided with an air inlet 31 corresponding to the air chamber 11, which is used to connect the air inlet pipe 33.

[0064] The upstream side of the outer casing 29 faces the inlet pipe 7, and the downstream side of the outer casing 29 faces the downstream end of the regulating tank.

[0065] The air inlet pipe 33 extends out of the regulating pool and is then connected to an external air supply device. The air inlet pipe 33 is equipped with a flow regulating valve to regulate the amount of air entering the air chamber 11 and control the pulse operation time.

[0066] Optionally, there is a gap between the bottom of the partition 30 and the bottom surface of the flow guiding cavity 10, so that the internal space of the flow guiding cavity 10 is divided into two regions by the partition 30, forming a baffle channel.

[0067] Further optionally, at least one limiting plate 34 is provided on the exterior of the downstream side of the outer shell 29. The limiting plate 34 is provided with a through hole, and the through hole is connected to the guide rod 3. The lifting chain 5 is connected to the top surface of the outer shell 29. When the lifting chain 5 lifts and lowers the agitator body 9, the agitator body 9 is lifted and lowered along the guide rod 3 through the limiting plate 34.

[0068] The bottom of the guide rod 3 is connected to the bottom of the regulating tank, and the top of the guide rod 3 protrudes through the top of the regulating tank. An opening is provided at the top of the regulating tank corresponding to the position of the pulse stirring device, allowing the guide rod 3, the lifting chain 5 and the stirrer body 9 to pass through the regulating tank. An openable cover can also be provided at this opening.

[0069] Optionally, the bottom of the guide rod 3 is provided with a support platform 35 for supporting the bottom of the downstream side of the outer shell 29 of the stirrer body 9.

[0070] Alternatively, the top end of the lifting chain 5 extends out of the regulating pool and is then connected to an external fixed pulley and winch. The lifting chain 5 is wound up and unwound to raise and lower the agitator body 9.

[0071] The agitator body 9 of this invention descends to the bottom of the regulating tank. Initially, the interior of the outer shell 29 is completely submerged in sewage, and both the guide chamber 10 and the air chamber 11 are filled with sewage. Upon startup, the air inlet 31 slowly introduces air. The upper part of the air chamber 11, where the air inlet 31 is located, is occupied by gas, as is the upper part of the downstream region of the guide chamber 10. The liquid levels in both the air chamber 11 and the downstream region of the guide chamber 10 gradually decrease. When the liquid level drops to the lower edge of the baffle 30, gas enters the upstream region of the guide chamber 10 from the lower edge of the baffle 30. At this point, the density of the gas-water mixture in the upstream region of the guide chamber 10 decreases, disrupting the original pressure balance. The downstream region of the guide chamber 10... High-pressure gas in the region moves rapidly along the lower edge of the baffle 30 to the upstream area of ​​the guide cavity 10. At this time, the two sides of the baffle 30 are connected to form a siphon channel. Under the action of water pressure, the gas in the downstream area of ​​the guide cavity 10 is continuously and rapidly released through the siphon channel. In a short period of time, a large amount of gas is released from the top opening of the guide cavity 10, which gathers into large bubbles and rises rapidly, causing strong agitation of the water body. This causes the sewage at the bottom of the regulating tank to rise and the sewage at the top of the regulating tank to fall, forming a water circulation and achieving the effect of stirring and homogenization.

[0072] The flow rate regulating valve in the air inlet pipe 33 controls the amount of air entering the agitator body 9 and the pulse running time, achieving the ideal pulse agitation effect, which saves air and provides strong agitation. Several pulse agitation devices are evenly arranged along the length of the central axis of the regulating tank.

[0073] Optionally, the bottom of the flow guiding cavity 10 is provided with a purge port 32, the bottom end of the purge pipe 36 is connected to the purge port 32, the top end is connected to an external air supply device, and the purge pipe is provided with a purge valve.

[0074] When the siphon channel becomes blocked, open the purge valve to guide the gas to the bottom of the guide chamber 10 (i.e., below the baffle 30) to clear the area below the baffle 30.

[0075] Optionally, at least one sewage lift pump is provided on the downstream side of the equalization tank to lift the sewage in the sewage equalization tank to the next process.

Claims

1. A pulsed in-line sewage conditioning tank, characterized in that From upstream side to downstream side, the adjusting pool comprises a primary filter unit, a secondary filter unit and a plurality of pulse stirring devices, the primary filter unit comprises a liftable grid cylinder, the top of the grid cylinder is open, used for receiving sewage entering the adjusting pool, the side wall of the grid cylinder is uniformly and densely provided with through holes, used for filtering sewage; the secondary filter unit comprises a grid plate, the grid plate is perpendicular to the horizontal center axis of the adjusting pool, used for filtering sewage again; The pulse stirring device comprises a guide rod one, a lifting chain one and a stirrer body, the stirrer body is slidably connected with the guide rod one, and the stirrer body is lifted by the lifting chain one; the stirrer body comprises a flow guide cavity and a gas chamber cavity arranged side by side, the bottom of the flow guide cavity is separated from the gas chamber cavity, the bottom of the stirrer body is open, sewage enters the gas chamber cavity through the flow guide cavity, the top of the gas chamber cavity is connected with an air inlet pipe, used for supplying air to the gas chamber cavity, and the gas can return to the adjusting pool through the flow guide cavity to form gas release and stir water body.

2. The pulsed in- situ mixing sewage lagoon according to claim 1, wherein, The adjusting pool is a horizontal cylinder, the top of the upstream end of the adjusting pool is provided with a water inlet pipe, the water outlet end of the water inlet pipe is above the grid cylinder, and the part of the water inlet pipe in the adjusting pool is inclined downward, which is beneficial to increase the initial water inlet speed.

3. The pulsed in- situ mixing sewage lagoon of claim 1 wherein, The primary filter unit comprises a grid cylinder, a support table one and at least one guide rod two, the grid cylinder is a vertical cylinder, and the bottom is closed; the side surface of the support table one is fixedly connected with the side surface of the upstream end of the adjusting pool, and the upper surface of the support table one can support the bottom of the grid cylinder, so as to limit the lower limit position of the grid cylinder; The guide rod two is vertically arranged, the bottom end is fixed on the upper surface of the support table one, and the top end penetrates out of the adjusting pool; the top of the outer side of the grid cylinder is provided with a guide ring, the guide ring corresponds to the guide rod two one by one, the guide ring is sleeved on the outer side of the guide rod two, and the guide ring plays a positioning role, so that the grid cylinder moves up and down along the guide rod two.

4. The pulsed in- situ mixing lagoon of claim 3 wherein, The top of the grid cylinder is connected with at least one lifting chain two, the top end of the lifting chain two penetrates out of the adjusting pool, and an external fixed pulley and a winch are further connected, so that the lifting chain two is wound and unwound to realize the lifting and lowering of the grid cylinder.

5. The pulse-mixing sewage lagoon of claim 3 wherein, The primary filter unit further comprises a cleaning device, the cleaning device comprises a cleaning head and a lifting rod, the cleaning head is similar to a triangular prism in shape, and the cleaning head has an arc in the transverse direction, so that the cleaning head is arranged concentrically with the grid cylinder; the longitudinal section of the cleaning head is similar to a right-angled triangle, one right-angled side is horizontal, the other right-angled side is vertical, and the side is a circular arc line protruding to the inside of the cleaning head; The bottom of the lifting rod is connected with the center of the top surface of the cleaning head, the top of the lifting rod penetrates out of the adjusting pool, and the lifting rod can drive the cleaning head to move up and down and left and right.

6. The pulse-mixing sewage lagoon of claim 1 wherein, The secondary filter unit comprises a grid plate, a driving part and a cleaning part, the grid plate is circular and uniformly and densely provided with through holes, and the grid plate is arranged concentrically with the adjusting pool; the driving part comprises a support component, a hydraulic cylinder and a pulling rod; the pulling rod is vertically arranged, the top end is connected with the telescopic end of the hydraulic cylinder, and the bottom end is connected with the downstream side of the grid plate; the hydraulic cylinder is arranged on the support component and can move along the support component; the support component and the hydraulic cylinder drive the grid plate to rotate through the pulling rod; One end of the cleaning part is connected with the support component, the other end contacts the upstream side of the grid plate, the support component drives the cleaning part to move, can clean the dirt attached to the upstream side of the grid plate, and improves the filtering efficiency.

7. The pulse-mixing sewage lagoon of claim 6, wherein, The support component is above the adjusting pool, comprising horizontal and parallel intermediate rail, upstream rail and downstream rail, the intermediate rail is directly above the grid plate and perpendicular to the central axis of the adjusting pool, the downstream rail is directly above the pulling rod, the hydraulic cylinder is slidingly connected to the downstream rail, and the upstream rail is directly above the cleaning part which is slidingly connected to the upstream rail; The control block is slidingly connected to the intermediate rail, the control block is connected to the hydraulic cylinder through connecting rod one, and the control block is connected to the cleaning part through connecting rod two, so that the control block drives the hydraulic cylinder and the cleaning part to move synchronously.

8. The pulse-mixing sewage lagoon of claim 7, wherein, The top of the adjusting pool is provided with a groove corresponding to the positions of the upstream rail and the downstream rail, respectively, the inside of the adjusting pool at the groove is in communication with the outside, so that the extension end of the hydraulic cylinder and the pulling rod can move back and forth along the corresponding groove, and the cleaning part can move back and forth along the corresponding groove; The pulling rod always maintains a vertical state, the bottom end of the pulling rod is detachably connected to at least one through hole of the grid plate, and the position where the bottom end of the pulling rod is connected to the grid plate is on the radius of the grid plate.

9. The pulse-mixing sewage lagoon of claim 1 wherein, The shell of the stirrer body is in a cubic shape, the bottom of the shell is open, the middle-upper part of the upstream side of the shell is the upstream side of the flow guide cavity, the downstream side of the flow guide cavity is the upstream side of the air chamber cavity, and the downstream side of the air chamber cavity is the downstream side of the shell; The top surface of the shell covers the rear half of the top of the flow guide cavity and the top of the air chamber cavity, a partition plate is arranged between the upstream side and the downstream side of the flow guide cavity, one end of the top surface of the shell is connected to the top of the partition plate, and the other end is connected to the downstream side of the shell, so that the front half of the top of the flow guide cavity is open, and the rear half of the top of the flow guide cavity is in communication with the top of the air chamber cavity; The part of the top surface of the shell corresponding to the air chamber cavity is provided with an air inlet for connecting an air inlet pipe.

10. The pulse-mixing sewage lagoon of claim 9, wherein, The bottom of the partition plate is spaced apart from the bottom surface of the flow guide cavity, so that the internal space of the flow guide cavity is divided into two areas by the partition plate to form a baffle channel; The downstream side of the shell is provided with at least one limiting plate outside, the limiting plate is provided with a through hole, the through hole is sleeved with a guide rod one, and a lifting chain one is connected to the top surface of the shell, when the lifting chain one lifts the stirrer body, the stirrer body is lifted along the guide rod one through the limiting plate.

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