A vacuum siphon-based sludge discharge device for a sedimentation tank

Abstract

The application discloses a vacuum siphon-based sludge discharge device for a sedimentation tank, and relates to the technical field of sewage treatment. The sedimentation tank is provided with a sludge discharge track. A plurality of sludge discharge racks are arranged on the sludge discharge track. The sludge discharge racks are embedded in the sedimentation tank. Each sludge discharge rack is fixedly connected to the sedimentation tank through fastening screws. A plurality of sludge discharge plates are arranged on the sludge discharge racks. A plurality of sludge discharge ports are arranged at the bottom of the sedimentation tank. Vacuum water guiding devices are arranged at the two sides of the sedimentation tank. A sludge discharge cavity is arranged on the sludge discharge port. The sludge discharge cavity is communicated with the vacuum water guiding devices through a vacuum conduit. A sludge discharge auxiliary rack is arranged on the sludge discharge rack. An inclined plate is arranged on the sludge discharge auxiliary rack. The inclined plate is slidably connected to the sludge discharge auxiliary rack. A sludge discharge valve is arranged on the sludge discharge port. A traction rod is arranged on the sludge discharge rack. The traction rod is rotatably connected to the sludge discharge plates through connecting shafts. The traction rod is slidably connected to the sludge discharge rack. The sludge discharge device has the functions of automatic extrusion and automatic adjustment of negative pressure.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a sludge removal device for sedimentation tanks based on vacuum siphon. Background Technology

[0002] Water resources are the most indispensable resource for us, and wastewater treatment is a crucial aspect that requires great attention. Currently, there are many wastewater treatment devices available, among which sedimentation tanks are the most commonly used. Sedimentation tanks are structures that use sedimentation to remove suspended solids from water, purifying water quality. They utilize the natural sedimentation or coagulation sedimentation of water to remove suspended solids. This sedimentation method not only allows for large-scale sludge removal operations but also offers high reliability. The sedimentation effect depends on the water flow rate and residence time in the sedimentation tank. It can be divided into static sludge removal and flowing sludge removal, each with different treatment methods.

[0003] Most sedimentation tanks are typically constructed using concrete and reinforced steel, and are usually equipped with a hydrophobic membrane. This structure not only maintains stability but also allows for multi-stage treatment of wastewater. Depending on the process layout, sedimentation tanks can be divided into primary sedimentation tanks and secondary sedimentation tanks. Primary sedimentation tanks are the main treatment structures in primary wastewater treatment plants or serve as pretreatment structures in secondary wastewater treatment plants, located before biological treatment structures. However, during use, problems such as sludge blockage and the inability to discharge sludge in a timely manner often occur. Furthermore, some sludge not only cannot be discharged in time but also adheres to the bottom of the sedimentation tank. Summary of the Invention

[0004] The purpose of this invention is to provide a sludge removal device for sedimentation tanks based on vacuum siphon, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a sedimentation tank sludge discharge device based on vacuum siphon.

[0006] The sludge removal equipment is installed on the sedimentation tank, which contains a sludge removal track. Multiple sludge removal frames are mounted on the track and embedded within the sedimentation tank. Each frame is fixed to the tank with fastening screws. Each frame has multiple sludge removal plates. Multiple sludge discharge ports are located at the bottom of the sedimentation tank. Vacuum water intake devices are installed on both sides of the tank. Each discharge port has a sludge discharge chamber connected to the vacuum water intake device via a vacuum conduit. A secondary sludge removal frame is mounted on the sludge removal frame, and an inclined plate is slidably connected to it. A sludge discharge valve is located at each discharge port. The sludge removal frame is equipped with… The system includes a traction rod, which is rotatably connected to the sludge discharge plate via a connecting shaft. The traction rod is also slidably connected to the sludge discharge frame. During sedimentation, wastewater is loaded into the sedimentation tank. After prolonged settling, the sludge will gradually separate into layers. When the sludge accumulation at the bottom of the sedimentation tank reaches the discharge requirement, a water head pressure of 5-6 meters is used to force the sludge from the bottom of the tank into the perforated suction pipe and then into the collection pipe for discharge. After discharge, the sludge discharge valve is closed. A DN400 valve can be selected for this purpose. Then, the vacuum water intake device is activated, which generates a vacuum. This vacuum will send the sludge and water into the sludge discharge chamber. Subsequently, the water is pressurized, and excess water is discharged into the sedimentation tank. This structure also has a rapid sludge removal mechanism. After the sewage is sent into the sedimentation tank, the traction rod is activated, which will drive the sludge discharge plate to swing, thereby rapidly settling the sludge in the sewage and sending it to the sludge discharge port. At the same time, the tilting plate is activated, causing it to move as well, ultimately causing the sludge to gather and be discharged from the sludge discharge port into the sludge discharge chamber and finally out of the equipment.

[0007] The sludge discharge frame is a grooved metal frame. The sludge discharge sub-frame is set vertically to the sludge discharge frame. The sludge discharge plate is equipped with a mounting frame, which is embedded in the groove on the sludge discharge frame and slidably connected to the mounting frame. The sludge discharge plate and the mounting frame are rotatably connected via a rotating shaft. The traction frame is equipped with a traction frame, which is sleeved on the traction rod and slidably connected to the traction rod. A swing assembly is installed in the sedimentation tank. The swing assembly is connected to the traction rod. During rapid sludge removal, the traction rod will drive the traction frame to move. Through the transmission of the traction frame, the sludge discharge plate will swing, thereby causing the sludge discharge plate to collect the sludge at the bottom of the sedimentation tank and send it to the vicinity of the sludge discharge port. With the activation of the vacuum water priming device, the sludge will be sucked out of the sedimentation tank. The sludge discharge sub-frame provides a restriction on the movement path of the inclined plate.

[0008] The oscillating assembly includes an oscillating motor and an anti-interference box. The anti-interference box is fixedly connected to the bottom of the sedimentation tank. The oscillating motor is installed inside the anti-interference box, and an oscillating gear is installed on the output end of the oscillating motor. The traction rod is equipped with teeth, and the teeth on the traction rod mesh with the oscillating gear. The anti-interference box is equipped with a cleaning thread, and the traction rod meshes with the cleaning thread and is slidably connected to the anti-interference box. The movement of the traction rod can adopt various traction methods. The motor-driven method is more suitable for the current oscillation of the traction rod. The oscillating motor drives the oscillating gear to rotate. Through the meshing of the teeth between the oscillating gear and the traction rod, the traction rod can be moved. At the same time, the threaded meshing between the anti-interference box and the traction rod will make the traction rod rotate on the anti-interference box, thereby avoiding excessive sludge adhering to the traction rod.

[0009] Each mud discharge plate has multiple mud discharge holes, and each mud discharge hole contains a guide vane. The guide vane is at an angle of 60°≤α≤80° to the plane of the mud discharge plate. Multiple mud-gathering turbines are mounted on the mud discharge frame and are rotatably connected to it. The mud-gathering turbines are positioned above the mud discharge ports and have a transmission shaft. A one-way gear is mounted on the transmission shaft and rotatably connected to it. A blocking spring is installed inside the one-way gear, abutting against a one-way groove on the transmission shaft. A moving strip is mounted on the mud discharge plate, sliding against the outer wall of the one-way gear. In the dynamic contact process, the sludge discharge plate will swing during the sludge discharge process. Water will flow through the sludge discharge hole, and under the action of the guide plate, the sludge can be effectively blocked at the bottom of the sedimentation tank. At the same time, the angle setting can effectively prevent the sludge from becoming turbulent here, allowing the water to be discharged in a more stable direction. During the swinging process of the sludge discharge plate, the moving bar on the sludge discharge plate will drive the one-way gear to rotate. Through the cooperation between the blocking spring and the one-way groove on the transmission shaft, the sludge-gathering turbine will rotate in one direction, thereby fully settling and accumulating the sludge at the sludge discharge port.

[0010] An extrusion screw assembly is installed inside the sludge discharge chamber. The extrusion screw assembly includes a first screw, a second screw, and a third screw. The first screw, the second screw, and the third screw are rotatably connected to the sludge discharge chamber. A drive fan blade is rotatably connected to the sludge discharge port and is connected to the first screw. The end of the first screw away from the drive fan blade has teeth. The first and third screws have teeth at their beginning and end, respectively. The teeth on the first screw mesh with the teeth on the second screw near the first screw. The teeth on the third screw near the second screw mesh with the teeth on the second screw. When the sludge enters the sludge discharge chamber, the extrusion screw assembly will operate. The sludge drives the drive fan blades to rotate, and the rotation of the drive fan blades, through tooth meshing, drives the first screw to rotate. After the first screw rotates, it drives the second screw to rotate through tooth meshing, and similarly, the third screw also rotates, thereby extruding the sludge and fully squeezing out the water in the sludge, which is then discharged into the sedimentation tank for recycling. At the same time, a motor can be added to drive the drive fan blades to rotate, thereby avoiding the problem of clogging.

[0011] The sludge discharge chamber includes a first drainage chamber, a second drainage chamber, and a third drainage chamber. The first, second, and third screws are respectively installed in the first, second, and third drainage chambers. The first and second drainage chambers, and the second and third drainage chambers, are connected through drainage compartments. A return water pipe is installed on the drainage compartment and is connected to the sedimentation tank. As the screws squeeze against each other, the water in the sludge is fully squeezed out. Each drainage chamber cooperates with its corresponding screw, and the sewage is squeezed out and sent to the drainage compartment. The return water pipe on the drainage compartment sends the water to the sedimentation tank. A water pump and other related structures can be added to the return water pipe to make the drainage faster and reduce the possibility of blockage.

[0012] A filter ring is installed in the third drainage chamber, which is fitted onto the third screw and fixedly connected to the third drainage chamber. The thread density on the first, second, and third screws is arranged in an increasing pattern. A booster motor is installed in the drainage chamber, and a buffer ring is installed on the drainage chamber. The inner edge of the buffer ring is slidably connected to the filter ring, and the outer edge of the buffer ring is slidably connected to the third drainage chamber. Sludge enters the third drainage chamber of the large plate. This chamber is the final drainage chamber. Through the gradually tightening thread arrangement, the sludge will feel sufficient pressure and discharge water from the third screw into the drainage chamber. As the water flow increases, the buffer ring will slide in the drainage chamber, thereby sensing the drainage volume. Under the action of the vacuum water intake device, the sludge will be sucked into the vacuum water intake device and discharged from the sedimentation tank.

[0013] A buffer spring is installed at the bottom of the buffer ring, with its two ends abutting against the buffer ring and the third drainage chamber, respectively. A pressurizing air gun is installed at one end of the third drainage chamber, which has both suction and blowing functions. Multiple spring switches are installed near the buffer ring in the third drainage chamber, each of which is electrically connected to the pressurizing air gun via a wire. During the sludge discharge process, the buffer ring will sense the weight of the sewage and slide between the spring switches. The opening and closing states and opening and closing frequencies of the spring switches fully reflect the amount and speed of sewage discharge. When the sewage discharge is too fast, the pressurizing air gun will suction, thereby generating an interaction force with the vacuum water priming device to reduce the sludge discharge speed and fully recover the sewage. When the sewage discharge is too slow, the pressurizing air gun will blow, causing pressurization in the third drainage chamber and accelerating the sludge discharge speed.

[0014] The inclined plate is equipped with multiple flow stabilizing grooves, each of which is rotatably connected to a flow stabilizing plate via a spring shaft. Sliding blocks are rotatably connected to the top and bottom of the inclined plate, and each sliding block is embedded in and slidably connected to the sludge discharge sub-frame. A sliding hydraulic rod is installed inside the sludge discharge sub-frame, and the output end of the sliding hydraulic rod is fixedly connected to the sliding block at the bottom. During rapid sludge removal, the sliding hydraulic rod inside the sludge discharge sub-frame will drive the inclined plate to move, and under the restraint of the sliding block, the inclined plate will deflect. During the deflection process, the sludge attached to the inclined plate can be detached in time. At the same time, it can also bring the sludge that cannot be reached by the suction of the sludge-gathering turbine closer to the sludge-gathering turbine, so that the sludge can be discharged more smoothly from the sludge discharge port.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: 1. The present invention adopts a structural component with vacuum suction, which can fully remove sludge from the sedimentation tank, increase the sludge removal speed, and the strong negative pressure can also effectively remove sludge, reduce the occurrence of clogging problems. At the same time, the internal water circulation system can also fully reduce the waste of water resources and achieve the effect of efficient recycling.

[0016] 2. This invention employs a structural component with automatic oscillation and automatic aggregation, which is fully adaptable to high-speed flowing sewage, reducing the problem of sludge flowing with the flow. Simultaneously, the automatic aggregation structural component also significantly reduces the problem of sludge clumping due to prolonged adhesion, thus enhancing the sludge removal effect.

[0017] 3. This invention adopts a structural component with automatic negative pressure adjustment. By detecting the sludge drainage volume, it can fully adapt to the current water flow rate. At the same time, it can automatically adjust the negative pressure state according to the current water content in the sludge. This can reduce clogging, accommodate different sludge contents, increase water discharge efficiency, and assist the sludge removal process, making the equipment operation more stable. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the sedimentation tank of the present invention;

[0021] Figure 3 This is a schematic diagram of the mud discharge plate structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the sludge discharge port structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the transmission shaft structure of the present invention;

[0024] Figure 6 This is a schematic diagram of the mud discharge chamber structure of the present invention;

[0025] Figure 7 yes Figure 6 A magnified schematic diagram of structure A in the middle section;

[0026] Figure 8 This is a schematic diagram of the swing component structure of the present invention;

[0027] Figure 9 This is a schematic diagram of the inclined plate and mud discharge subframe structure of the present invention;

[0028] In the diagram: 1. Sludge discharge track; 2. Sludge discharge frame; 3. Sludge discharge plate; 301. Mounting frame; 302. Traction frame; 303. Guide lever; 304. Sludge gathering turbine; 305. Transmission shaft; 306. One-way gear; 307. Blocking spring; 308. Moving bar; 4. Sludge discharge port; 401. Transmission fan blade; 5. Vacuum water priming device; 6. Sludge discharge chamber; 601. First drainage chamber; 602. Second drainage chamber; 603. Third drainage chamber; 604. Drainage bin; 605. Return water pipe; 606. Filter ring. 607. Buffer ring; 608. Buffer spring; 609. Pressurized air gun; 610. Spring switch; 7. Vacuum conduit; 8. Sludge discharge sub-frame; 9. Inclined plate; 901. Flow stabilizing trough; 902. Flow stabilizing plate; 903. Sliding block; 904. Sliding hydraulic rod; 11. Traction rod; 12. Swing assembly; 1201. Swing motor; 1202. Anti-interference box; 1203. Swing gear; 13. Extrusion screw assembly; 1301. First screw; 1302. Second screw; 1303. Third screw. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] The sludge removal equipment is installed on the sedimentation tank. A sludge removal track 1 is installed inside the sedimentation tank, and multiple sludge removal frames 2 are installed on the track 1. Each sludge removal frame 2 is embedded in the sedimentation tank and fixedly connected to the sedimentation tank by fastening screws. Multiple sludge removal plates 3 are installed on the sludge removal frame 2. Multiple sludge discharge ports 4 are located at the bottom of the sedimentation tank. Vacuum water intake devices 5 are installed on both sides of the sedimentation tank. A sludge discharge chamber 6 is installed on each sludge discharge port 4, and the sludge discharge chamber 6 is connected to the vacuum water intake device 5 via a vacuum conduit 7. A secondary sludge removal frame 8 is installed on the sludge removal frame 2, and an inclined plate 9 is installed on the secondary sludge removal frame 8. The inclined plate 9 is slidably connected to the secondary sludge removal frame 8. A sludge discharge port 4 is provided with… The sludge discharge valve and sludge discharge frame 2 are equipped with a traction rod 11. The traction rod 11 is rotatably connected to the sludge discharge plate 3 via a connecting shaft, and the traction rod 11 is slidably connected to the sludge discharge frame 2. During sedimentation, wastewater is loaded into the sedimentation tank. After the wastewater enters the sedimentation tank, the sludge will gradually stratify as it sits for a long time. When the amount of sludge accumulated at the bottom of the sedimentation tank reaches the discharge requirement, the sludge at the bottom of the sedimentation tank is forced into the perforated sludge suction pipe and then into the sludge collection pipe by a water head pressure of 5m~6m in the tank, thus discharging the sludge. After discharge, the sludge discharge valve is closed. The sludge discharge valve can be a DN400 valve. Then, the vacuum water intake device is activated, which generates a vacuum. This vacuum will send the sludge and water into the sludge discharge chamber. Subsequently, the water is pressurized, and excess water is discharged into the sedimentation tank. This structure also has a rapid sludge removal mechanism. After the sewage is sent into the sedimentation tank, the traction rod is activated, which will drive the sludge discharge plate to swing, thereby rapidly settling the sludge in the sewage and sending it to the sludge discharge port. At the same time, the tilting plate is activated, causing it to move as well, ultimately causing the sludge to gather and be discharged from the sludge discharge port into the sludge discharge chamber and finally out of the equipment.

[0031] The sludge discharge frame 2 is a metal frame with a groove. The sludge discharge sub-frame 8 is set perpendicularly to the sludge discharge frame 2. The sludge discharge plate 3 is provided with a mounting frame 301, which is embedded in the groove on the sludge discharge frame 2 and slidably connected to the mounting frame 301. The sludge discharge plate 3 and the mounting frame 301 are rotatably connected by a rotating shaft. The sludge discharge plate 3 is provided with a traction frame 302, which is sleeved on the traction rod 11 and slidably connected to the traction rod 11. The sedimentation tank is provided with a swing assembly 12, which is connected to the traction rod 11. During rapid sludge removal, the traction rod will drive the traction frame to move. Through the transmission of the traction frame, the sludge discharge plate will swing, thereby causing the sludge discharge plate to collect the sludge at the bottom of the sedimentation tank and send it to the vicinity of the sludge discharge port. With the activation of the vacuum water priming device, the sludge will be sucked out of the sedimentation tank. The sludge discharge sub-frame provides a restriction on the movement path of the inclined plate.

[0032] The swing assembly 12 includes a swing motor 1201 and an anti-interference box 1202. The anti-interference box 1202 is fixedly connected to the bottom of the sedimentation tank. The swing motor 1201 is installed inside the anti-interference box 1202. A swing gear 1203 is provided on the output end of the swing motor 1201. The traction rod 11 is provided with teeth. The teeth on the traction rod 11 mesh with the swing gear 1203. The anti-interference box 1202 is provided with a cleaning thread. The traction rod 11 meshes with the cleaning thread and is slidably connected to the anti-interference box 1202. The movement of the traction rod can adopt various forms of traction. The motor-driven method is more suitable for the swing of the current traction rod. The swing motor drives the swing gear to rotate. Through the meshing of the teeth between the swing gear and the traction rod, the traction rod can be moved. At the same time, the thread meshing between the anti-interference box and the traction rod will make the traction rod rotate on the anti-interference box, thereby avoiding excessive sludge adhering to the traction rod.

[0033] Each mud discharge plate 3 is provided with multiple mud discharge holes, and each mud discharge hole is provided with a guide plate 303. The guide plate 303 is at an angle of 60°≤α≤80° with the plane of the mud discharge plate 3. The mud discharge frame 2 is provided with multiple mud gathering turbines 304, which are rotatably connected to the mud discharge frame 2. The mud gathering turbines 304 are located above the mud discharge port 4. The mud gathering turbines 304 are provided with a transmission shaft 305, and the transmission shaft 305 is provided with a one-way gear 306. The one-way gear 306 is sleeved on the transmission shaft 305 and rotatably connected to the transmission shaft 305. The one-way gear 306 is provided with a blocking spring 307, which abuts against the one-way groove on the transmission shaft 305. The sludge discharge plate 3 is equipped with a movable strip 308, which slides in contact with the outer wall of the one-way gear 306. During the sludge discharge process, the sludge discharge plate will swing, and the water will flow through the sludge discharge hole. Under the action of the guide plate, the sludge can be fully blocked at the bottom of the sedimentation tank. At the same time, the angle setting can effectively prevent the sludge from getting tangled here, so that the water can be discharged in a more stable direction. During the swinging process of the sludge discharge plate, the movable strip on the sludge discharge plate will drive the one-way gear to rotate. Through the cooperation between the blocking spring and the one-way groove on the transmission shaft, the sludge turbine rotates in one direction, thereby fully settling and accumulating the sludge at the sludge discharge port.

[0034] A screw assembly 13 is installed inside the mud discharge chamber 6. The screw assembly 13 includes a first screw 1301, a second screw 1302, and a third screw 1303. The first screw 1301, the second screw 1302, and the third screw 1303 are rotatably connected to the mud discharge chamber 6. A drive blade 401 is rotatably connected to the mud discharge port 4. The drive blade 401 is connected to the first screw 1301. The end of the first screw 1301 away from the drive blade 401 is provided with teeth. The first and second screws 1302 and 1303 are provided with teeth at their beginning and end, respectively. The teeth on the first screw 1301 are close to the teeth on the second screw 1302. The teeth of the third screw 1303, near the end of the second screw 1302, mesh with the teeth of the second screw 1302. When the sludge enters the sludge discharge chamber, the extrusion screw assembly will operate. The sludge drives the transmission fan blades to rotate, and the rotation of the transmission fan blades, through tooth meshing, drives the first screw to rotate. After the first screw rotates, it drives the second screw to rotate through tooth meshing. Similarly, the third screw also rotates, thereby extruding the sludge and fully squeezing out the water in the sludge, which is then discharged into the sedimentation tank for recycling. At the same time, a motor can be added to drive the transmission fan blades to rotate, thereby avoiding the problem of clogging.

[0035] The sludge discharge chamber 6 includes a first drainage chamber 601, a second drainage chamber 602, and a third drainage chamber 603. A first screw 1301, a second screw 1302, and a third screw 1303 are respectively installed in the first drainage chamber 601, the second drainage chamber 602, and the third drainage chamber 603. The first drainage chamber 601 and the second drainage chamber 602, and the second drainage chamber 602 and the third drainage chamber 603 are respectively connected through a drainage chamber 604. A return water pipe 605 is installed on the drainage chamber 604 and is connected to a sedimentation tank. Through mutual compression within the screw assembly, the water in the sludge is fully squeezed out. Each drainage chamber cooperates with its corresponding screw, squeezing out wastewater and sending it to the drainage chamber. The return water pipe on the drainage chamber sends the water to the sedimentation tank. A water pump or other related structures can be added to the return water pipe to make drainage faster and reduce the possibility of blockage.

[0036] A filter ring 606 is installed in the third drainage chamber 603. The filter ring 606 is sleeved on the third screw 1303 and fixedly connected to the third drainage chamber 603. The thread density on the first screw 1301, the second screw 1302, and the third screw 1303 is arranged in an increasing pattern. A booster motor is installed in the drainage chamber 604. A buffer ring 607 is installed on the drainage chamber 604. The inner edge of the buffer ring 607 is slidably connected to the filter ring 606, and the outer edge of the buffer ring 607 is slidably connected to the third drainage chamber 603. Sludge enters the third drainage chamber of the large plate. This chamber is the final drainage chamber. Through the gradually tightening thread arrangement, the sludge will feel sufficient pressure and discharge water from the third screw and into the drainage chamber. As the water flow increases, the buffer ring will slide in the drainage chamber, thereby sensing the drainage volume. Under the action of the vacuum water intake device, the sludge will be sucked into the vacuum water intake device and discharged from the sedimentation tank.

[0037] A buffer spring 608 is installed at the bottom of the buffer ring 607. The two ends of the buffer spring 608 abut against the buffer ring 607 and the third drainage chamber 603, respectively. A pressurizing air gun 609 is installed at one end of the third drainage chamber 603. The pressurizing air gun 609 has the functions of suction and blowing air. Multiple spring switches 610 are installed near the buffer ring 607 in the third drainage chamber 603. Each spring switch 610 is electrically connected to the pressurizing air gun 609 through a wire. During the sludge discharge process, the buffer ring will sense the weight of the sewage and slide between the spring switches. The closing state and switching frequency of the spring switches at different positions fully reflect the discharge volume and discharge speed of the sewage. When the sewage is discharged too fast, the pressurizing air gun will perform suction, thereby generating an interaction force with the vacuum water priming device, reducing the discharge speed of sludge and fully recovering the sewage. When the sewage is discharged too slowly, the pressurizing air gun will perform blowing, causing pressurization in the third drainage chamber and accelerating the discharge speed of sludge.

[0038] Multiple flow stabilizing grooves 901 are provided on the inclined plate 9. Each flow stabilizing groove 901 is rotatably connected to a flow stabilizing plate 902 via a spring shaft. Sliding blocks 903 are rotatably connected to the top and bottom of the inclined plate 9. Each sliding block 903 is embedded in the sludge discharge sub-frame 8 and slidably connected to the sludge discharge sub-frame 8. A sliding hydraulic rod 904 is provided in the sludge discharge sub-frame 8. The output end of the sliding hydraulic rod 904 is fixedly connected to the sliding block 903 at the bottom. During rapid sludge removal, the sliding hydraulic rod in the sludge discharge sub-frame will drive the inclined plate to move. Under the restriction of the sliding block, the inclined plate will deflect. During the deflection process, the sludge attached to the inclined plate can be removed in time. At the same time, the sludge that cannot be reached by the suction of the sludge-gathering turbine can be brought closer to the sludge-gathering turbine, so that the sludge can be discharged from the sludge discharge port more smoothly.

[0039] The working principle of this invention: This sedimentation tank has two sludge removal methods: static sedimentation sludge removal and oscillating pressurized sludge removal. During static sedimentation, wastewater is loaded into the sedimentation tank. After prolonged settling, the sludge will gradually separate into layers. Then, the vacuum water intake device 5 is activated, creating a vacuum that draws the sludge and water into the sludge discharge chamber 6. Subsequently, pressurization is applied to discharge excess water into the sedimentation tank, significantly reducing the time required for sludge removal. When oscillating pressurized sludge removal is performed, the system connects... Upon receiving the sludge discharge command, the vacuum water intake device is activated for 5 seconds, then the sludge discharge valve is opened. The vacuum water intake device 5 first applies negative pressure to the sludge discharge chamber 6. After the vacuum water intake device 5 runs for 30 seconds, the sludge discharge valve is closed, stopping the vacuum water intake device 5. Then, the sludge discharge valve is opened again. At this time, the sludge at the bottom of the sedimentation tank is forced into the perforated sludge discharge port 4 by the water head pressure of 5m~6m within the tank. Simultaneously, the swing motor 1201 is activated, driving the traction rod 11 to move. The traction rod 11 will then drive the sludge discharge plate 3 to swing, and the traction rod 11 will also rotate accordingly, preventing the traction rod from... Excessive sludge adhering to the sludge discharge plate 3 will also drive the sludge-gathering turbine 304 to rotate, thereby rapidly depositing and aggregating the sludge in the sewage and sending it to the sludge discharge port 4. At the same time, the tilting plate 9 will be activated, causing it to move, ultimately causing the sludge to gather. With the gravity of the sludge and the flow of sewage, the drive fan blade 401 will rotate. The rotation of the drive fan blade 401 will drive the first screw 1301 to rotate. Alternatively, a motor pressurization method can be used, depending on the specific sewage flow rate. The second screw 1302 and the third screw 130... 3. The system rotates and is pressurized in multiple stages. The buffer ring 607 detects the discharged water and adjusts the working state of the booster air gun 609 based on the feedback from the spring switch 610. The sludge discharged into the sludge discharge chamber 6 is finally discharged out of the equipment. If the sludge discharge chamber is blocked, the vacuum water priming device 5 is forcibly started, the sludge discharge valve is opened, and forced suction is performed through the pipeline. After suctioning for 15 minutes, the vacuum water priming device 5 is stopped, the sludge discharge valve is closed, and the gravity sludge discharge is observed to see if it is unobstructed. If it is not unobstructed, the vacuum water priming device 5 is restarted repeatedly. After multiple executions, the blockage of the sludge discharge port 4 can be resolved.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 sludge removal device for a sedimentation tank based on vacuum siphon, wherein the sludge removal device is installed on the sedimentation tank, characterized in that: The sedimentation tank is equipped with a sludge discharge track (1), and multiple sludge discharge racks (2) are installed on the sludge discharge track (1). The sludge discharge racks (2) are embedded in the sedimentation tank, and each sludge discharge rack (2) is fixedly connected to the sedimentation tank by fastening screws. Multiple sludge discharge plates (3) are installed on the sludge discharge racks (2). Multiple sludge discharge ports (4) are installed at the bottom of the sedimentation tank. Vacuum water intake devices (5) are installed on both sides of the sedimentation tank. A sludge discharge chamber (6) is installed on each sludge discharge port (4). The sludge discharge frame (2) is connected to the vacuum water supply device (5) through a vacuum conduit (7). A sludge discharge sub-frame (8) is provided on the sludge discharge frame (2). An inclined plate (9) is provided on the sludge discharge sub-frame (8). The inclined plate (9) is slidably connected to the sludge discharge sub-frame (8). A sludge discharge valve is provided on the sludge discharge port (4). A traction rod (11) is provided on the sludge discharge frame (2). The traction rod (11) is rotatably connected to the sludge discharge plate (3) through a connecting shaft. The traction rod (11) is slidably connected to the sludge discharge frame (2). The sludge discharge chamber (6) is provided with an extrusion screw assembly (13), which includes a first screw (1301), a second screw (1302), and a third screw (1303); The sludge discharge chamber (6) includes a third drainage chamber (603), in which a filter ring (606) is provided. The filter ring (606) is sleeved on the third screw (1303) and fixedly connected to the third drainage chamber (603). The thread density on the first screw (1301), the second screw (1302), and the third screw (1303) is arranged in an increasing pattern. A booster motor is provided in the drainage chamber (604). A buffer ring (607) is provided on the drainage chamber (604). The inner edge of the buffer ring (607) is slidably connected to the filter ring (606), and the outer edge of the buffer ring (607) is slidably connected to the third drainage chamber (603). A buffer spring (608) is provided at the bottom of the buffer ring (607). The two ends of the buffer spring (608) abut against the buffer ring (607) and the third drainage chamber (603) respectively. A booster air gun (609) is provided at one end of the third drainage chamber (603). The booster air gun (609) has the functions of inhaling and blowing air. A plurality of spring switches (610) are provided near the buffer ring (607) in the third drainage chamber (603). Each spring switch (610) is electrically connected to the booster air gun (609) through a wire.

2. The sludge removal device for a sedimentation tank based on vacuum siphon according to claim 1, characterized in that: The sludge discharge frame (2) is a metal frame with a groove. The sludge discharge sub-frame (8) is set perpendicular to the sludge discharge frame (2). The sludge discharge plate (3) is provided with a mounting frame (301). The mounting frame (301) is embedded in the groove on the sludge discharge frame (2) and is slidably connected to the mounting frame (301). The sludge discharge plate (3) and the mounting frame (301) are rotatably connected by a rotating shaft. The sludge discharge plate (3) is provided with a traction frame (302). The traction frame (302) is sleeved on the traction rod (11) and is slidably connected to the traction rod (11). The sedimentation tank is provided with a swing assembly (12). The swing assembly (12) is connected to the traction rod (11).

3. The sludge removal device for a sedimentation tank based on vacuum siphon according to claim 2, characterized in that: The swing assembly (12) includes a swing motor (1201) and an anti-interference box (1202). The anti-interference box (1202) is fixedly connected to the bottom of the sedimentation tank. The swing motor (1201) is installed inside the anti-interference box (1202). A swing gear (1203) is provided on the output end of the swing motor (1201). The traction rod (11) is provided with teeth. The teeth on the traction rod (11) mesh with the swing gear (1203). A cleaning thread is provided inside the anti-interference box (1202). The traction rod (11) meshes with the cleaning thread and is slidably connected to the anti-interference box (1202).

4. The sludge removal device for a sedimentation tank based on vacuum siphon according to claim 3, characterized in that: Each of the mud discharge plates (3) is provided with multiple mud discharge holes, and each mud discharge hole is provided with a guide plate (303). The guide plate (303) and the plane of the mud discharge plate (3) are at an angle of 60°≤α≤80°. The mud discharge frame (2) is provided with multiple mud-gathering turbines (304). The mud-gathering turbines (304) are rotatably connected to the mud discharge frame (2). The mud-gathering turbines (304) are located above the mud discharge port (4). The mud-gathering turbines (304) are provided with a transmission mechanism. A transmission shaft (305) is provided with a one-way gear (306), which is sleeved on the transmission shaft (305) and rotatably connected to the transmission shaft (305). A blocking spring (307) is provided inside the one-way gear (306), which abuts against the one-way groove on the transmission shaft (305). A moving strip (308) is provided on the mud discharge plate (3), which slides in contact with the outer wall of the one-way gear (306).

5. The sludge removal device for a sedimentation tank based on vacuum siphon according to claim 1, characterized in that: The first screw (1301), the second screw (1302), and the third screw (1303) are rotatably connected to the mud discharge chamber (6). A transmission fan blade (401) is rotatably connected to the mud discharge port (4). The transmission fan blade (401) is connected to the first screw (1301). The end of the first screw (1301) away from the transmission fan blade (401) is provided with teeth. The first screw (1302) and the third screw (1303) are provided with teeth at their beginning and end. The teeth on the first screw (1301) mesh with the teeth on the second screw (1302) near the first screw (1301). The teeth on the third screw (1303) near the second screw (1302) mesh with the second screw (1302).

6. A sludge removal device for a sedimentation tank based on vacuum siphon according to claim 5, characterized in that: The sludge discharge chamber (6) further includes a first drainage chamber (601) and a second drainage chamber (602). The first screw (1301), the second screw (1302), and the third screw (1303) are respectively disposed on the first drainage chamber (601), the second drainage chamber (602), and the third drainage chamber (603). The first drainage chamber (601) and the second drainage chamber (602), and the second drainage chamber (602) and the third drainage chamber (603) are respectively connected through a drainage chamber (604). A return water pipe (605) is disposed on the drainage chamber (604), and the return water pipe (605) is connected to the sedimentation tank.

7. The sludge removal device for a sedimentation tank based on vacuum siphon according to claim 1, characterized in that: The inclined plate (9) is provided with a plurality of flow stabilizing grooves (901), and each flow stabilizing groove (901) is rotatably connected to a flow stabilizing plate (902) via a spring shaft. The top and bottom ends of the inclined plate (9) are respectively rotatably connected to sliding blocks (903). Each sliding block (903) is embedded in the sludge discharge sub-frame (8) and slidably connected to the sludge discharge sub-frame (8). The sludge discharge sub-frame (8) is provided with a sliding hydraulic rod (904), and the output end of the sliding hydraulic rod (904) is fixedly connected to the sliding block (903) at the bottom end.

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