Sewage treatment equipment with dredging function and treatment method

Abstract

The present application belongs to sewage treatment technical field, especially to a kind of sewage treatment equipment and processing method with dredging function, including sewage pool with locking valve, the bottom of the sewage pool is conical shape, the top of the sewage pool is provided with fixing frame, the middle part of the fixing frame is provided with driving machine, the bottom of the fixing frame is provided with rotatable rotating rod, the bottom of the rotating rod is installed with symmetrically arranged triangular plate, the side of the triangular plate is provided with inclined plane, the present application is monitored in real time by detector pool bottom state, intelligent identification board layer, when dredging, electric push rod pushes sharp mud scraping sharp plate and powerfully cuts into board layer, mechanical scraping is carried out using rotary force, while high-pressure water flow is preflushed from first jetting port to loosen sludge, form hydraulic flushing and mechanical stripping efficient combination, this combination completely solves the problem that traditional scraper cannot handle thick board layer and is easy to slip, and dredging is more thorough.

Description

Technical Field

[0001] This invention belongs to the technical field of wastewater treatment, and particularly relates to a wastewater treatment device and treatment method with dredging function. Background Technology

[0002] With social development, the amount of wastewater generated in production and daily life is constantly increasing. In order to ensure sustainable development and avoid environmental pollution, wastewater must be treated before being discharged. Wastewater treatment plants are equipped with wastewater treatment ponds for sedimentation and purification of wastewater. However, during the wastewater treatment process, suspended solid particles in the wastewater will gradually settle and form sludge accumulation at the bottom of the treatment pond. This will reduce the effective volume of the wastewater treatment pond and reduce the wastewater treatment efficiency. Therefore, it is necessary to design a wastewater treatment equipment with sludge removal function to solve the above problems.

[0003] In the field of wastewater treatment technology, integrated wastewater treatment equipment is widely used in small and medium-sized wastewater treatment scenarios due to its advantages such as high integration, small footprint, and convenient operation. Among them, the wastewater tank, as the core treatment unit, needs to separate suspended particles from the water through sedimentation to provide qualified supernatant for subsequent purification processes. At the same time, the sludge generated during the sedimentation process needs to be cleaned up in a timely manner to avoid problems such as accumulation leading to reduction of effective tank volume, decreased pollutant degradation efficiency, and even caking.

[0004] However, Chinese Patent Publication No. CN222082451U discloses an existing integrated sewage treatment device with sludge removal function, including a sewage tank. An arc-shaped block is integrally connected to the bottom of the inner wall of the sewage tank. A scraper is fitted onto a sliding rod through a round hole and connected to a threaded rod through a threaded hole. When the motor drives the threaded rod to rotate, the scraper slides smoothly along the sliding rod. Because the bottom of the scraper matches the arc-shaped block, starting the motor drives the threaded rod to rotate, and the scraper slides within the tank, scraping the residual sludge adhering to the tank wall and bottom to the first discharge trough. The sludge falls from the discharge trough into a sludge collection box below. The above has a defect in its use: First, the gap between the scraper and the bottom of the tank is usually 5-10mm. When the thickness of the hardened layer exceeds the gap, the scraper can only scrape off the loose sludge on the surface and cannot reach the hardened part at the bottom, resulting in hardened sludge remaining at the bottom of the tank. Long-term accumulation will reduce the effective volume of the sewage tank. Moreover, the scraper relies only on the horizontal movement force driven by the motor. When facing a hardened layer with strong adhesion, it is easy to slip. The scraper slides relative to the surface of the hardened layer and cannot effectively peel off the sludge. Second, the sludge at the corners of the bottom wall of the sewage tank is prone to hardening. This not only makes it difficult for the scraper to clean effectively, but also makes it difficult to discharge, wears down, and even hinders movement, interferes with the precision of the equipment, and affects normal use. Summary of the Invention

[0005] In view of this, the present invention aims to solve the technical problems that when cleaning sewage treatment equipment, the scraper cannot effectively remove the bottom layer of compacted sludge that is too thick to be effectively removed due to the gap between the scraper and the bottom of the tank and the fact that it can only be driven by horizontal force. At the same time, the compacted sludge at the corner of the bottom wall of the sewage tank is also difficult to clean, and it is easy to cause scraper wear and movement obstruction.

[0006] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0007] This invention discloses a sewage treatment device with sludge removal function, including a sewage tank with a locking valve. The bottom of the sewage tank is conical, and a fixed frame is provided at the top of the sewage tank. A drive motor is provided in the middle of the fixed frame, and a rotatable rotating rod is provided at the bottom of the fixed frame. Symmetrically arranged triangular plates are installed at the bottom of the rotating rod. One side of the triangular plate is provided with an inclined surface, the inclination angle of which is adapted to the inner surface of the conical sewage tank. A detector is provided in the middle of the triangular plate.

[0008] The sludge scraper assembly, located on one side of the triangular plate, is used to clean the hardened layer on the bottom wall of the sewage tank.

[0009] The high-pressure jetting assembly, located on one side of the triangular plate, is used to clean the corners of the sewage tank.

[0010] Furthermore, an electric actuator is provided at the top of the triangular plate, and the movable end of the electric actuator is mounted on the top of the rotating rod. The sludge scraping assembly includes:

[0011] The sludge scraper is in the shape of a triangular pyramid and there are two sets of them. Both sets of the sludge scraper are set on the side of the triangular plate facing the inner conical surface of the sewage tank and are arranged in a straight array. At the same time, the two sets of sludge scraper are staggered on the circumferential track of the sewage tank. The two sets of sludge scraper are arranged in opposite directions at the bottom of the triangular plate. A connecting plate is installed on the side of the sludge scraper closest to the triangular plate.

[0012] The sludge scraper tip is triangular in shape and is installed on the side of the sludge scraper seat near the triangular plate facing the conical surface inside the sewage tank. The shape of the side of the sludge scraper tip near the sewage tank is perfectly matched with the inner conical surface of the sewage tank.

[0013] There are several vertical plates of different sizes, which are installed inside the triangular plate and correspond to the mud scraper seat;

[0014] The spring rod is vertically slidably connected inside the triangular plate. One end of the spring rod passes through the vertical plate and extends to the connecting plate, forming a fixed connection.

[0015] One corner of the sludge scraper tip is set along the rotation direction of the inner side of the conical surface of the sewage tank, and the side wall of this corner is inclined downwards.

[0016] Furthermore, the high-pressure injection assembly includes:

[0017] A water storage tank is installed on top of a rotating rod and rotatably connected to a fixed frame; the fixed end of the electric actuator is installed below the water storage tank.

[0018] There are two connecting seats, which are symmetrically installed in the middle of the rotating rod. They have three water outlets and one water inlet. The water inlet is connected to the water storage tank through a pipe.

[0019] The first water outlet pipe has one end symmetrically installed on the left and right ends of the connector.

[0020] The first inlet plate has an arc-shaped structure, and the corner of the sewage tank is set as an arc surface. The first inlet plate is corresponding to the corner of the sewage tank, and a spray hole connected to the other end of the first outlet pipe is opened in the first inlet plate.

[0021] Furthermore, a baffle plate is provided on one side of the triangular plate, and an inclined plate is installed along one side of the baffle plate along the sludge scraper seat. The inclined plate is made of an elastic material, and the inclined surface of the inclined plate is arranged along the centrifugal direction of the sewage tank.

[0022] Furthermore, a second water outlet pipe is installed at the bottom water outlet end of the connecting seat, and two telescopic pipes are installed at the bottom of the second water outlet pipe. A second water inlet plate is installed on the side wall of the connecting plate. One end of one telescopic pipe is connected to one end of the second water inlet plate. A first spray nozzle is opened on one side of the sludge scraper seat. The spray direction of the first spray nozzle is arranged along one side of the sludge scraper tip and along the centrifugal direction of the sewage tank.

[0023] Furthermore, a third water inlet plate is installed on one side of the connecting plate, and one end of the other telescopic pipe is connected to one end of the third water inlet plate. A second spray nozzle is opened on the side of the third water inlet plate near the sewage tank. The spray direction of the second spray nozzle is along the inclined plate direction and along the centrifugal direction of the sewage tank.

[0024] Furthermore, a mounting plate is installed at the bottom of the triangular plate, and a telescopic spring rod is installed inside the mounting plate. The spring potential energy of the spring rod is greater than that of the telescopic spring rod. One side of the triangular plate is slidably connected to the shielding plate via a slide rail. The telescopic end of the telescopic spring rod is fixedly connected to one end of the shielding plate. A first drive plate is installed at the top of the shielding plate. A limit groove is formed in a vertical plate located on one side of the top of the first drive plate. A vertical block fixedly connected to the spring rod is installed in the limit groove. A second drive plate is installed at the bottom of the vertical block. The first drive plate and the second drive plate have inclined surfaces that contact each other.

[0025] A wastewater treatment method using a wastewater treatment device with sludge removal function includes the following steps:

[0026] First, open the sewage tank locking valve, start the drive motor and water tank pump, and put the electric actuator on standby.

[0027] Second, the electric actuator extends and pushes the triangular plate downward, so that the two sets of staggered sludge scraper seats and triangular sludge scraper tips fit into the inner wall of the conical sewage tank. The sludge scraper tips cut into the hardened layer with sharp angles facing the direction of rotation, and peel off the hardened sludge and loose sludge as the triangular plate rotates.

[0028] Third, the high-pressure water flows through the connecting seat to flush the corners, clean the sludge scraper and loosen the sludge, and flush the pool wall and inclined plate under the pressure of the baffle plate.

[0029] Fourth, the spring rod releases potential energy to trigger the telescopic spring rod to push the baffle plate and the elastic inclined plate upward. The inclined plate deforms and fits against the concave and convex parts of the pool wall, guiding the sludge to the bottom discharge port of the pool in a centrifugal direction; when the electric push rod retracts, the inclined plate moves down and resets, further scraping away the residual sludge.

[0030] Fifth, after the dredging is completed, the electric actuator retracts, causing the sludge scraping assembly to detach from the pool wall. The spring rod and telescopic spring rod reset, the equipment stops running, and the locking valve closes.

[0031] Compared to existing technologies, the wastewater treatment equipment and method with dredging function described in this invention have the following advantages:

[0032] 1. This invention uses a detector to monitor the bottom of the pool in real time and intelligently identify the compacted layer. During sludge removal, the electric actuator pushes the sharp scraper blade to forcefully cut into the compacted layer and uses rotational force for mechanical scraping. At the same time, high-pressure water flow pre-washes away loose sludge from the first jet nozzle, forming a highly efficient combination of hydraulic flushing and mechanical stripping. This combination completely solves the problems of traditional scrapers being unable to handle thick compacted layers and being prone to slipping, resulting in more thorough sludge removal.

[0033] 2. To address blind spots in cleaning, this invention features an arc-shaped high-pressure jet plate that precisely matches the shape of the corner at the bottom of the pool. It rotates synchronously with the rotating rod and sprays high-pressure water jets diagonally downwards, dynamically covering and flushing every point of the entire circumferential corner. The high-pressure water jets can penetrate deep into crevices, thoroughly loosening and peeling away stubborn sludge, perfectly solving the problem that traditional scrapers cannot clean corners due to limitations in shape and movement.

[0034] 3. The invention features a spring rod that allows the sludge scraping assembly to adapt to uneven pool walls, protecting the equipment and ensuring effective sludge removal. High-pressure water flow automatically washes the scraper tip and inclined plate during sludge removal, preventing clogging and slippage, thus achieving self-cleaning. The combined force of the water flow impact and the centrifugal force of the rotating equipment, along with the conical pool bottom structure, greatly accelerates the accumulation and discharge of sludge to the bottom, significantly improving efficiency. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 This is another schematic diagram of the overall structure of the present invention;

[0037] Figure 3 This is a schematic diagram of the sludge scraping assembly of the present invention;

[0038] Figure 4 This is a front view of the sludge scraping assembly of the present invention;

[0039] Figure 5 This is another schematic diagram of the sludge scraping assembly of the present invention;

[0040] Figure 6 yes Figure 5 A magnified view of part A in the image;

[0041] Figure 7 This is a schematic diagram of the scraper seat and scraper tip of the present invention;

[0042] Figure 8 This is a top view of the sludge scraping assembly of the present invention;

[0043] Figure 9 yes Figure 3 A magnified view of part B in the image;

[0044] Figure 10 yes Figure 4 A magnified view of part C.

[0045] The markings in the diagram are as follows:

[0046] 1. Sewage tank; 12. Fixing frame; 13. Drive motor; 14. Rotating rod; 15. Triangular plate; 16. Detector; 17. Electric actuator; 2. Sludge scraper assembly; 21. Sludge scraper seat; 22. Sludge scraper tip; 23. Vertical plate; 24. Spring rod; 25. Baffle plate; 26. Inclined plate; 27. Mounting plate; 28. Telescopic spring rod; 29. ​​First drive plate; 291. Limiting groove; 2911. Vertical block; 292. Second drive plate; 2100. High-pressure jet assembly; 2101. Water storage tank; 2102. Connecting seat; 2103. First water outlet pipe; 2104. First water inlet plate; 211. Second water outlet pipe; 212. Telescopic pipe; 213. Second water inlet plate; 214. First jet nozzle; 215. Third water inlet plate; 216. Second jet nozzle. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0048] See Figures 1-4 As shown, the present invention provides a sewage treatment device with sludge removal function, including a sewage tank 1 with a locking valve. The bottom of the sewage tank 1 is conical, and a fixed frame 12 is provided at the top of the sewage tank 1. A drive motor 13 is provided in the middle of the fixed frame 12, and a rotatable rotating rod 14 is provided at the bottom of the fixed frame 12. The drive motor 13 is a motor used to drive the rotating rod 14 to rotate. A triangular plate 15 is symmetrically arranged at the bottom of the rotating rod 14. One side of the triangular plate 15 is provided with an inclined surface. The inclination angle of the inclined surface is adapted to the inner surface of the cone of the sewage tank 1. The main body of the triangular plate 15 is symmetrically spliced ​​from two congruent right-angled triangular plate units. The right-angled sides of the two right-angled triangular plate units are attached and fixed to each other. The inclined sides of the two units together form the inclined working surface of the triangular plate. Its top is integrated as the connecting end of the rotating rod 14. A detector 16 and a sludge scraping assembly 2 are provided in the middle of the triangular plate 15. The sludge scraping assembly 2 is provided on one side of the triangular plate 15 and is used to clean the hardened layer on the bottom wall of the sewage tank 1.

[0049] It should be noted that when the triangular plate 15 rotates with the rotating rod 14, the detector 16 can emit a detection signal to the inner surface of the cone of the sewage tank 1 in real time. By the change in signal reflection time or intensity, it can be determined whether there is a hardened layer between the detection point and the tank wall (the density and hardness of the hardened layer are significantly different from those of loose sludge or water, which will result in different signal reflection characteristics). If a hardened layer is detected, the detector 16 can transmit the signal to the equipment control system to trigger the operation of the sludge scraping assembly 2 to ensure that the hardened layer is effectively removed.

[0050] When the triangular plate 15 is stirred in the sewage tank 1, it can keep the sewage in a flowing state. Under the action of the flow, the suspended particles in the sewage are difficult to quickly and in large quantities accumulate at the bottom of the tank and gradually harden. Through continuous stirring, the particles can be prevented from sticking together tightly due to long-term static sedimentation, reducing the possibility of hardening layer formation from the source, ensuring the effective volume of sewage tank 1, and maintaining the efficient operation of sewage treatment.

[0051] If a hardened layer has formed at the bottom of the pool, after entering the sludge removal mode, the triangular plate 15 can drive the sludge scraper 2 and other related structures to act on the hardened layer. The sludge scraper 2, with the help of the force generated by the rotation of the triangular plate 15, can scrape and peel off the hardened layer, break up and clean the hardened sludge, restore the effective space of the sewage pool 1, and ensure that the subsequent sewage treatment process is not affected by the hardened layer.

[0052] See Figures 3-8 As shown, an electric actuator 17 is installed at the top of the triangular plate 15. The moving end of the electric actuator 17 is installed at the top of the rotating rod 14. The sludge scraping assembly 2 is located on one side of the triangular plate 15 and is used to clean the hardened layer on the bottom wall of the sewage tank 1. The sludge scraping assembly 2 includes a sludge scraping seat 21, which is triangular pyramidal in shape and is used to clean the loose sludge on the surface of the sewage tank 1. There are two sets of sludge scraping seats 21. Both sets of sludge scraping seats 21 are located on the side of the triangular plate 15 facing the inner conical surface of the sewage tank 1 and are arranged in a straight array. At the same time, on the circumferential track of the sewage tank 1, the two sets of sludge scraping seats 21 are staggered and arranged in opposite directions at the bottom of the triangular plate 15. A connecting plate 210 is installed on the side near the triangular plate 15; a scraper tip 22, which is triangular in shape, is installed on the side of the scraper seat 21 near the triangular plate 15 facing the inner conical surface of the sewage tank 1, and is used to clean the hardened layer on the surface of the sewage tank 1. The shape of the side of the scraper tip 22 near the sewage tank 1 is perfectly matched with the inner conical surface of the sewage tank 1; there are several vertical plates 23 of different sizes, which are installed inside the triangular plate 15 and correspond to the scraper seat 21; a spring rod 24 is a compression spring, which is vertically slidably connected inside the triangular plate 15, and one end of which passes through the vertical plate 23 and extends to the connecting plate 210, forming a fixed connection.

[0053] It should be noted that when the detector 16 detects a crusty layer on the inner wall of the sewage tank 1 or when the equipment enters the sludge removal mode, the output end of the drive motor 13 is rigidly connected to the fixed end of the electric push rod 17 via a coaxial coupling. The electric push rod 17 rotates synchronously with the output shaft of the drive motor 13. Simultaneously, the drive motor 13 is fixed to the center of the mounting bracket 12, ensuring that its output shaft coincides with the central axis of the sewage tank 1, providing a stable rotation reference for the rotating rod 14. The moving end (telescopic shaft) of the electric push rod 17 is connected via a spline. In conjunction with the top of the rotating rod 14, after the drive motor 13 starts, its output shaft drives the electric push rod 17 to rotate as a whole. The telescopic shaft of the electric push rod 17 drives the rotating rod 14 to rotate synchronously through a spline connection, ultimately driving the triangular plate 15 and the sludge scraping assembly 2 to rotate along the circumferential track of the sewage tank 1, completing the scraping action. Then, the system starts the electric push rod 17, and the moving end of the electric push rod 17 pushes the rotating rod 14 and the triangular plate 15 to move downward as a whole, so that the inclined surface of one side of the triangular plate 15 fits against the inner conical surface of the sewage tank 1, while simultaneously driving the sludge scraping assembly 2 to approach the tank wall. At this time, the sludge scraping tip 22 on the sludge scraping seat 21 contacts the inner wall of the sewage tank 1. The drive motor 13 drives the rotating rod 14 to rotate, and the triangular plate 15 rotates along the circumferential track of the sewage tank 1 with the rotating rod 14. The sludge scraping tip 22 scrapes and peels off the solidified layer of the tank wall, while the triangular cone-shaped sludge scraping seat 21 simultaneously cleans the loose sludge on the surface.

[0054] Because the two sets of scraper seats 21 are arranged in a straight array along the inner side of the triangular plate 15, and are staggered on the circumferential track with their bottoms facing opposite directions, when the triangular plate 15 rotates, the two sets of scraper tips 22 and scraper seats 21 form an alternating rotational trajectory, covering the entire area of ​​the inner wall of the sewage tank 1, avoiding any omissions and improving the thoroughness of sludge removal. At the same time, the spring rod 24 compensates for minor displacements during the scraping process through elastic extension and contraction, ensuring that the scraper tips 22 are always in close contact with the tank wall. Combined with the stable rotation of the triangular plate 15 against the tank wall, this achieves effective peeling of the strongly adhered hardened layer. Under the centrifugal force generated by the rotation, the cleaned sludge is discharged towards the bottom along the conical inner wall of the sewage tank 1. The centrifugal force accelerates the discharge of sludge, and the staggered rotational trajectory reduces repetitive work, significantly shortening the sludge removal time. Furthermore, the stable rotation of the triangular plate 15 against the tank wall prevents slippage and ensures continuous and efficient operation.

[0055] The scraper tip 22 of this invention is used to specifically peel off the hardened layer, and the triangular cone-shaped scraper seat 21 quickly cleans loose sludge. The two work together to solve the problem that traditional scrapers cannot handle thick hardened layers, and the effect is particularly significant on peeling hardened sludge with strong adhesion.

[0056] The present invention utilizes the elastic extension and contraction characteristics of the spring rod 24 to automatically compensate for displacement deviations during the sludge scraping process, ensuring that the sludge scraping tip 22 is in close contact with the pool wall while reducing equipment wear and pool wall damage caused by hard contact.

[0057] See Figure 1 and Figure 3 As shown, one corner of the sludge scraper 22 is set along the rotation direction of the inner conical surface of the sewage tank 1.

[0058] It should be noted that the scraper tip 22 contacts the hardened layer with one corner facing the direction of rotation, forming a sharp cutting end of the blade. The rotational power is concentrated at the tip, which can quickly penetrate the surface structure of the hardened layer. The side wall of this corner is inclined downward, which is conducive to the formation of a guide slope. Combined with the centrifugal force generated by the rotation of the triangular plate 15, impurities can slide quickly along the inclined surface to the bottom of the sewage tank 1, avoiding accumulation on the surface of the scraper tip 22.

[0059] See Figure 1 , Figure 3 and Figure 9As shown, the high-pressure jet assembly 2100 is located on one side of the triangular plate 15 and is used to clean the corner of the sewage tank 1. The high-pressure jet assembly 2100 includes: a water storage tank 2101, which is installed on the top of the rotating rod 14 and rotatably connected to the fixing frame 12; the fixed end of the electric push rod 17 is installed below the water storage tank 2101; and two connecting seats 2102, which are symmetrically installed in the middle of the rotating rod 14. Each connecting seat has three outlets and one inlet. The inlet is connected to the water storage tank 2101 via a pipe. An internal water pump is installed to pump water from the storage tank 2101 through pipes along the direction of the connector 2102, and then through the three outlets of the connector 2102. The first outlet pipe 2103 is symmetrically installed at one end on the left and right sides of the connector 2102. The first inlet plate 2104 has an arc-shaped plate structure, and the corner of the sewage tank 1 is set as an arc surface. The first inlet plate 2104 is located at the corner of the sewage tank 1. The first inlet plate 2104 has a spray hole that is connected to the other end of the first outlet pipe 2103.

[0060] It should be noted that when silt accumulates or forms hard crusts at the arc-shaped corner of the sewage tank 1, the high-pressure jet assembly 2100 starts working: the water pump in the water storage tank 2101 pressurizes the water and then delivers it through the pipeline to the two symmetrical connecting seats 2102 (inlet end) in the middle of the rotating rod 14. The water flow is split through the connecting seats 2102 to three outlet ends, and the outlet ends at the left and right ends guide the high-pressure water flow into the first inlet plate 2104 through the first outlet pipe 2103.

[0061] At this time, the drive motor 13 drives the rotating rod 14 and the triangular plate 15 to rotate, and simultaneously drives the connecting seat 2102, the first water outlet pipe 2103 and the first water inlet plate 2104 to move along the circumferential trajectory of the sewage tank 1. Since the first water inlet plate 2104 is an arc-shaped plate structure and precisely corresponds to the arc-shaped surface at the corner of the sewage tank 1, it always fits the corner area during the rotation. At the same time, the spray holes in the first water inlet plate 2104 spray high-pressure water (pressure controlled by the water pump) to the silt or hardened layer at the corner. The water flow impact force loosens and peels off the stubborn deposits. With the rotation of the first water inlet plate 2104, the corner area is thoroughly flushed and cleaned.

[0062] It is worth noting that the jet holes are arranged at an angle downwards in the first water inlet plate 2104. The downward water flow impact can directly act on the root of the sediment layer, and quickly loosen the hardened silt through hydraulic shear force. In particular, for dead corners and gaps where the pool bottom connects, water can be jetted into the gaps to peel off stubborn attachments.

[0063] The present invention features a first water inlet plate 2104 that rotates synchronously with the rotating rod 14, completing dynamic flushing of the entire corner circumference during movement. Compared with fixed-position spraying, the coverage is more comprehensive, and a single rotation can complete the overall cleaning of the corner area, reducing repetitive work. The arc-shaped structure of the first water inlet plate 2104 is precisely matched with the arc-shaped surface at the corner of the sewage tank 1, solving the problem that traditional scrapers are difficult to reach corner gaps due to shape limitations, ensuring that there are no blind spots in the corner area.

[0064] See Figure 5 and Figure 6 As shown, a baffle plate 25 is provided on one side of the triangular plate 15, and an inclined plate 26 is installed along one side of the baffle plate 25 along the sludge scraper seat 21. The inclined plate 26 is made of an elastic material, and the inclined surface of the inclined plate 26 is arranged along the centrifugal direction of the sewage tank 1.

[0065] It should be noted that the inner wall of sewage tank 1 may develop slight unevenness due to long-term use. The triangular plate 15 rotates with the rotating rod 14. After the scraper tip 22 and scraper seat 21 clean the hardened layer and loose sludge on the inner wall of sewage tank 1, the elastic inclined plate 26 conforms to the tank wall and the slight uneven surface through its own deformation, guiding the sludge to the bottom discharge port of the tank in the centrifugal direction, avoiding the sludge from remaining in the gaps and forming new accumulation blind areas, and further improving the sludge removal effect.

[0066] See Figure 5 and Figure 6 As shown, a second water outlet pipe 211 is installed at the bottom water outlet end of the connecting seat 2102. Two telescopic pipes 212 are installed at the bottom of the second water outlet pipe 211. A second water inlet plate 213 is installed on the side wall of the connecting plate 210. One end of one of the telescopic pipes 212 is connected to one end of the second water inlet plate 213. A first spray nozzle 214 is opened along one side of the sludge scraper seat 21. The spray direction of the first spray nozzle 214 is along one side of the sludge scraper tip plate 22 and along the centrifugal direction of the sewage tank 1.

[0067] It should be noted that when the equipment enters the sludge removal mode, the water pump in the water storage tank 2101 starts, delivering high-pressure water through the pipeline to the connecting seat 2102. The water flows into the second outlet pipe 211 through the bottom outlet of the connecting seat 2102, and then is split through two telescopic pipes 212. One of the water flows into the second inlet plate 213 on the side wall of the connecting plate 210. Subsequently, the high-pressure water is sprayed out from the second inlet plate 213 along the first spray nozzle 214 opened on one side of the sludge scraper seat 21. The spray from the first spray nozzle 214... The direction of the water jet is both aligned with one side of the scraper tip 22 and arranged along the centrifugal direction of the sewage tank 1, so that the high-pressure water jet can be precisely applied to the working area of ​​the scraper tip 22. On the one hand, it directly washes away the sludge attached to the surface of the scraper tip 22, avoiding the accumulation of impurities that affect the scraping effect; on the other hand, the water jet impacts the hardened layer between the scraper tip 22 and the inner wall of the sewage tank 1 in the centrifugal direction, helping to loosen the stubborn sludge. Combined with the mechanical scraping of the scraper tip 22, it achieves a dual sludge removal action of hydraulic flushing and mechanical stripping.

[0068] This invention uses the first spray nozzle 214 to precisely target the working area of ​​the scraper tip 22. The high-pressure water flow loosens the hardened layer and destroys the adhesion of the sludge, making the mechanical scraping of the scraper tip 22 less labor-intensive. This effectively solves the problem that it is difficult to peel off stubborn hardened layers by mechanical scraping alone, improving the thoroughness of sludge removal. Moreover, the water flow directly washes the surface of the scraper tip 22, promptly removing the attached sludge debris and avoiding scraping slippage or blade dulling caused by the accumulation of impurities, ensuring that the scraper tip 22 always maintains a highly efficient working state.

[0069] See Figure 5 and Figure 6 As shown, a third water inlet plate 215 is installed on one side of the connecting plate 210, and one end of another telescopic pipe 212 is connected to one end of the third water inlet plate 215. A second spray nozzle 216 is opened on the side of the third water inlet plate 215 near the sewage tank 1. The spray direction of the second spray nozzle 216 is along the direction of the inclined plate 26 and along the centrifugal direction of the sewage tank 1.

[0070] It should be noted that during the dredging operation, the high-pressure water flow diverted by the connecting seat 2102 enters the third water inlet plate 215 through the telescopic pipe 212, and forms a directional water flow through the second spray nozzle 216. The water flow is sprayed along the direction of the inclined plate 26, directly washing away the silt attached to the surface of the inclined plate 26, preventing the elastic inclined plate 26 from losing its guiding function due to the accumulation of impurities. Due to the blocking effect of the baffle plate 25, the water flow is restricted to the bottom wall area of ​​the sewage tank 1, forming a local high-pressure environment, which enhances the scouring force of the water flow on the tank wall.

[0071] Meanwhile, the second jet nozzle 216 is in the opposite direction to the first jet nozzle 214 (the first jet nozzle 214 points in the centrifugal direction along the scraper tip 22, and the second jet nozzle 216 forms a complementary angle in opposite directions along the inclined plate 26). The two sets of water flow form a cross-flushing zone around the scraper assembly 2, realizing multi-angle stripping and pushing of sludge. Moreover, the arrangement of water flow in the centrifugal direction and the centrifugal force generated by the rotation of the equipment form a combined force, which, together with the stirring effect of the reverse water flow, makes the sludge gather towards the bottom discharge port of the pool more quickly, greatly improving the discharge efficiency.

[0072] See Figure 1 , Figure 3 , Figure 4 and Figure 10 As shown, a mounting plate 27 is installed at the bottom of the triangular plate 15, and a telescopic spring rod 28 is installed inside the mounting plate 27. One side of the triangular plate 15 is slidably connected to the cover plate 25 via a slide rail. The telescopic end of the telescopic spring rod 28 is fixedly connected to one end of the cover plate 25. A first drive plate 29 is installed at the top of the cover plate 25. A limit groove 291 is opened in the vertical plate 23 located on the top side of the first drive plate 29. A vertical block 2911 fixedly connected to the spring rod 24 is installed in the limit groove 291. A second drive plate 292 is installed at the bottom of the vertical block 2911. The first drive plate 29 and the second drive plate 292 have inclined surfaces that contact each other.

[0073] It should be noted that when the electric actuator 17 extends, it pushes the triangular plate 15 downward, causing the scraper seat 21 and the scraper tip 22 to fit tightly against the inner side of the sewage tank 1, entering the scraping operation state. At this time, the lower end of the spring rod 24 abuts against the sewage tank 1, thereby driving the internal rod of the spring rod 24 to move upward. The spring in the spring rod 24 is stretched and stores energy. When the internal rod of the spring rod 24 moves upward along the vertical plate 23, it drives the vertical block 2911 to move upward synchronously within the limiting groove 291. The vertical block 2911 drives the second drive plate 292 to move upward. The first drive plate 29 loses the restraint of the second drive plate 292. The telescopic spring rod 28 releases the spring potential energy and pushes the baffle plate 25 to slide upward along the inclined surface of the sewage tank 1. Then, the electric actuator 17 retracts and pulls the triangular plate 15 upward. The scraper seat 21 and the scraper tip 22 separate from the tank wall. The spring rod 24 and the telescopic spring rod 28 reset under the action of elastic force. The vertical block 2911 moves upward along the limiting groove 291. The slot 291 moves downward, and the second drive plate 292 pushes the first drive plate 29 in the opposite direction through the inclined plane, causing the baffle plate 25 and the inclined plate 26 to slide back to their initial positions along the inclined plane. When the inclined plate 26 moves upward, the rebound force generated by the elastic deformation will form a continuous slight pressure on the sludge on the pool wall. With the guiding effect of the inclined plane, the loose sludge is peeled off from the pool wall and pushed upward. When it moves downward, the elastic force causes the edge of the inclined plate 26 to stick tightly to the pool wall, further scraping off the sludge that was not completely peeled off during the upward movement and guiding it to the bottom of the pool, thereby enhancing the sludge scraping effect.

[0074] A wastewater treatment method using a wastewater treatment device with sludge removal function includes the following steps:

[0075] First, open the locking valve of sewage tank 1, start the drive motor 13 (driving the rotating rod 14 and triangular plate 15 to rotate) and the water pump of water storage tank 2101, and keep the electric push rod 17 on standby.

[0076] Second, the electric actuator 17 extends and pushes the triangular plate 15 down, so that the two sets of staggered sludge scraper seats 21 and sludge scraper tips 22 fit into the inner wall of the conical sewage tank 1. The sludge scraper tips 22 cut into the hardened layer with sharp angles facing the direction of rotation, and peel off the hardened sludge and loose sludge as the triangular plate 15 rotates.

[0077] Third, the high-pressure water flows through the connector 2102 to flush the corners, clean the sludge scraper 22 and loosen the sludge, and flush the pool wall and inclined plate 26 under the pressure of the baffle plate 25.

[0078] Fourth, the spring rod 24 releases potential energy to trigger the telescopic spring rod 28 to push the baffle plate 25 and the elastic inclined plate 26 upward. The inclined plate 26 deforms and fits against the concave and convex parts of the pool wall, guiding the sludge to the bottom discharge port of the pool in the centrifugal direction. When the electric push rod 17 retracts, the inclined plate 26 moves downward to reset, further scraping away the residual sludge.

[0079] Fifth, after dredging is completed, the electric actuator 17 retracts, causing the sludge scraping assembly 2 to detach from the pool wall. The spring rod 24 and the telescopic spring rod 28 reset, the equipment stops operating, and the locking valve closes. The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art, under the guidance of this application, can make many other modifications without departing from the spirit and scope of the claims, all of which fall within the protection scope of this application.

Claims

1. A sewage treatment device with dredging function, comprising a sewage tank (1) with a locking valve, characterized in that... The bottom of the sewage tank (1) is conical. A fixed frame (12) is provided at the top of the sewage tank (1). A drive motor (13) is provided in the middle of the fixed frame (12). A rotatable rotating rod (14) is provided at the bottom of the fixed frame (12). A triangular plate (15) is symmetrically arranged at the bottom of the rotating rod (14). One side of the triangular plate (15) is provided with an inclined surface. The inclination angle of the inclined surface is adapted to the inner surface of the cone of the sewage tank (1). A detector (16) is provided in the middle of the triangular plate (15). The sludge scraper assembly (2) is set on one side of the triangular plate (15) and is used to clean the hardened layer on the bottom wall of the sewage tank (1); A high-pressure jet assembly (2100) is installed on one side of the triangular plate (15) for cleaning the corner of the sewage tank (1); The sludge scraping assembly (2) includes: The sludge scraper (21) is in the shape of a triangular cone and is used to clean the loose sludge on the surface of the sewage tank (1). There are two sets of the sludge scraper (21). Both sets of the sludge scraper (21) are set on the side of the triangular plate (15) facing the inner conical surface of the sewage tank (1) and arranged in a straight array. At the same time, on the circumferential track of the sewage tank (1), the two sets of the sludge scraper (21) are staggered. The two sets of the sludge scraper (21) are arranged in opposite directions at the bottom of the triangular plate (15). A connecting plate (210) is installed on the side of the sludge scraper (21) close to the triangular plate (15). The sludge scraper tip (22) is triangular in shape and is installed on the side of the sludge scraper seat (21) near the triangular plate (15) facing the inner conical surface of the sewage tank (1). It is used to clean the hardened layer on the surface of the sewage tank (1). The shape of the side of the sludge scraper tip (22) near the sewage tank (1) is perfectly matched with the inner conical surface of the sewage tank (1). There are several vertical plates (23) of different sizes, which are installed inside the triangular plate (15) and correspond to the mud scraper seat (21); The spring rod (24) is vertically slidably connected inside the triangular plate (15), and one end of it passes through the vertical plate (23) and extends to the connecting plate (210) to form a fixed connection; One corner of the scraper tip (22) is set along the rotation direction of the inner conical surface of the sewage tank (1), and the side wall of the corner is inclined downward. An electric actuator (17) is mounted on the top of the rotating rod (14), and the high-pressure injection assembly (2100) includes: A water storage tank (2101) is installed on the top of the rotating rod (14) and is rotatably connected to the fixing frame (12). The fixed end of the electric push rod (17) is installed below the water storage tank (2101). There are two connecting seats (2102), which are symmetrically installed in the middle of the rotating rod (14). They have three water outlets and one water inlet. The water inlet is connected to the water storage tank (2101) through a pipe. The first water outlet pipe (2103) is symmetrically installed at both ends of the connecting seat (2102); The first inlet plate (2104) has an arc-shaped plate structure. The corner (3) of the sewage tank (1) is set as an arc surface. The first inlet plate (2104) is located at the corner of the sewage tank (1). The bottom outlet end of the connecting seat (2102) is equipped with a second water outlet pipe (211), and the bottom of the second water outlet pipe (211) is equipped with two telescopic pipes (212). The side wall of the connecting plate (210) is equipped with a second water inlet plate (213). One end of one telescopic pipe (212) is connected to one end of the second water inlet plate (213). The second water inlet plate (213) has a first spray port (214) along one side of the sludge scraper seat (21). The spray direction of the first spray port (214) is arranged along one side of the sludge scraper tip plate (22) and along the centrifugal direction of the sewage tank (1).

2. The sewage treatment equipment with dredging function according to claim 1, characterized in that, A shielding plate (25) is provided on one side of the triangular plate (15), and an inclined plate (26) is installed on one side of the shielding plate (25) along the sludge scraper seat (21). The inclined surface of the inclined plate (26) is arranged along the centrifugal direction of the sewage tank (1).

3. A sewage treatment device with dredging function according to claim 1, characterized in that, A third water inlet plate (215) is installed on one side of the connecting plate (210). One end of another telescopic pipe (212) is connected to one end of the third water inlet plate (215). A second spray port (216) is provided on the side of the third water inlet plate (215) near the sewage tank (1). The spray direction of the second spray port (216) is along the direction of the inclined plate (26) and along the centrifugal direction of the sewage tank (1).

4. A sewage treatment device with dredging function according to claim 2, characterized in that, The bottom of the triangular plate (15) is equipped with an installation plate (27), and a telescopic spring rod (28) is installed inside the installation plate (27). One side of the triangular plate (15) is slidably connected to the shield plate (25) via a slide rail. The telescopic end of the telescopic spring rod (28) is fixedly connected to one end of the shield plate (25). The top of the shield plate (25) is equipped with a first drive plate (29). A limiting groove (291) is opened in the vertical plate (23) located on the top side of the first drive plate (29). A vertical block (2911) fixedly connected to the spring rod (24) is installed in the limiting groove (291). A second drive plate (292) is installed at the bottom of the vertical block (2911). The first drive plate (29) and the second drive plate (292) have inclined surfaces that contact each other.

5. A wastewater treatment method with dredging function, employing a wastewater treatment device with dredging function as described in any one of claims 1-4, characterized in that: The specific steps are as follows: S1: Open the sewage tank (1), lock the valve, start the drive motor (13) and water tank (2101) water pump, and put the electric actuator (17) on standby; S2: The electric push rod (17) extends and pushes the triangular plate (15) down, so that the two sets of staggered sludge scraper seats (21) and the triangular plate (15) shaped sludge scraper tip (22) fit into the conical inner wall of the sewage tank (1). The sludge scraper tip (22) cuts into the hardened layer with the sharp angle facing the direction of rotation, and peels off the hardened sludge and loose sludge as the triangular plate (15) rotates. S3: High-pressure water flows through the connector (2102) and is divided to flush the corners, clean the sludge scraper (22) and loosen the sludge, and flush the pool wall and inclined plate (26) under the pressure of the baffle plate (25). S4: The spring rod (24) releases potential energy to trigger the telescopic spring rod (28) to push the baffle plate (25) and the elastic inclined plate (26) upward. The inclined plate (26) deforms and fits the concave and convex parts of the pool wall, guiding the sludge to the bottom discharge port of the pool in the centrifugal direction. When the electric push rod (17) retracts, the inclined plate (26) moves down to reset, further scraping away the residual sludge. S5: After the dredging is completed, the electric push rod (17) retracts to disengage the sludge scraping assembly (2) from the pool wall, the spring rod (24) and the telescopic spring rod (28) reset, the equipment stops running and the locking valve is closed.

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