Municipal sludge treatment equipment

Abstract

The invention relates to the technical field of water pollution control and treatment, and discloses municipal sludge treatment equipment which comprises a sludge dewatering machine, a water filtering box and a flocculation box, the water filtering box and the flocculation box are arranged in the sludge dewatering machine, and high-pressure flushing assemblies for conducting two-axis moving type high-pressure spraying on a stacked spiral body in the water filtering box are arranged on the outer walls of the two sides of the water filtering box. The top of the flocculation box is provided with a multi-layer and multi-direction dosing assembly; the dosing assembly comprises two rotary dosing pipes which penetrate through and are rotationally connected to the top of the flocculation box. According to the device, the medicine feeding nozzle can be rotated into the shielding frame to block the end of the medicine feeding nozzle, sludge on the surface of the medicine feeding nozzle and the arc-shaped inner wall of the shielding frame is scraped and removed through cooperation of the sludge scraping assembly, and the situation that sludge exists at the positions, making contact with the medicine feeding nozzle, of the medicine feeding nozzle and the shielding frame, and consequently the sludge enters the medicine feeding nozzle in the blocking process is prevented; the blockage of the chemical feeding nozzle caused by drying and curing of the sludge can be prevented, and the maintenance frequency of the chemical feeding nozzle is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of water pollution control and treatment technology, and more specifically to a municipal sludge treatment device. Background Technology

[0002] With my country's increasing emphasis on ecological and environmental protection, water pollution control and treatment have become an important part of the national strategy. Against this backdrop, municipal sludge is an inevitable byproduct of urban sewage treatment. It has a complex composition, high water content, and large volume, and must be effectively reduced in volume and stabilized before it can be disposed of.

[0003] Sludge dewatering is a crucial step in sludge treatment processes, and its effectiveness directly determines sludge transportation costs, final disposal methods, and environmental risks. Among various dewatering equipment, the screw press sludge dewatering machine is widely used due to its compact structure, continuous operation, and high degree of automation.

[0004] Traditional screw press sludge dewatering machines primarily use a screw shaft to push conditioned sludge through an annular filter gap formed by stacked fixed and moving rings, achieving dewatering through compression as the pressure gradually increases. However, in practical large-scale, long-term municipal sludge treatment applications, the following drawbacks still exist: 1. Traditional dosing methods mostly involve intermittent injection of chemicals through pipes and nozzles. The pipes and nozzles are always placed in the flocculation box. During the flocculation process, a large amount of flocculent material is generated. These flocculent material and sludge are prone to clogging the nozzles during the intervals between drug injection stops.

[0005] 2. The gap between the main body of the pressurized screw is easily clogged by sticky sludge or excessive chemicals. Once clogged, the dewatering efficiency drops sharply. Traditional fixed spray cleaning is not effective. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a municipal sludge treatment device to solve the problem that the traditional dosing method is to intermittently inject the agent through the pipeline and nozzle, and the pipeline and nozzle are always placed in the flocculation box. During the flocculation process, a large amount of flocculent material is generated. These flocculent material and sludge are prone to clogging the nozzle during the intervals between dosing.

[0007] The present invention provides the following technical solution: a municipal sludge treatment device, including a sludge dewatering machine, and a filter tank and a flocculation tank inside the sludge dewatering machine. The outer walls on both sides of the filter tank are provided with a high-pressure flushing assembly for two-axis moving high-pressure spraying of the main body of the stacked screw in the filter tank. The top of the flocculation tank is provided with a multi-layer, multi-directional dosing assembly. The dosing assembly includes two rotating dosing pipes that penetrate and are rotatably connected to the top of the flocculation box. Each rotating dosing pipe has a dosing tube rotatably connected to its top end via a rotary joint. Four rows of dosing nozzles are fixedly connected to the outer circumference of the rotating dosing pipe within the flocculation box, and the four rows of dosing nozzles are arranged in a ring array on the outer circumference of the rotating dosing pipe. The other end of the dosing tube is connected to an external dosing device via a flexible hose. The top inner wall of the flocculation box is provided with a blocking component extending into the cavity of the flocculation box, which is used to clean the sludge at the end of the drug inlet nozzle.

[0008] As a further embodiment of the present invention, the high-pressure flushing assembly includes multiple sets of L-shaped brackets fixedly connected to both sides of the filter tank. Each set of L-shaped brackets has a sliding table fixedly connected to its top. A connecting frame spanning the filter tank is fixedly connected to the upper surface of the sliding parts of the multiple sliding tables. Two sliding frames are slidably connected to the connecting frame. Two water pipe frames corresponding to the main body of the stacked screw are fixedly connected to the bottom of the two sliding frames. Multiple high-pressure nozzles with equal intervals are fixedly connected to the outer circumference of the water pipe frames, and the multiple high-pressure nozzles are all perpendicular to the main body of the stacked screw. The water inlet end of the water pipe frame is connected to an external water supply device through a hose.

[0009] As a further embodiment of the present invention, a second set of L-shaped brackets is fixedly connected to one side of the water filter tank and located between the two sets of L-shaped brackets. A linear motor module is fixedly connected to the top of the second set of L-shaped brackets. A connecting block is fixedly connected to the upper surface of the mover of the linear motor module. The top of the connecting block is fixed to the connecting frame, which is used to make the connecting frame slide vertically along the slide table.

[0010] As a further embodiment of the present invention, a vertical connecting plate is fixedly connected at one end between the two sliding frames, and an electric push rod is fixedly connected to one side of the outer wall of the connecting frame. The telescopic end of the electric push rod passes through the connecting frame and is fixed to one side of the vertical connecting plate, so as to make the sliding frame slide laterally along the connecting frame.

[0011] As a further embodiment of the present invention, the interval between any two adjacent high-pressure nozzles on the same water pipe rack is a distance equal to the width of three high-pressure nozzles.

[0012] As a further embodiment of the present invention, the blocking assembly includes pulleys one installed on the outer circumference of the two rotating drug inlet pipes and protruding from the flocculation box. The two pulleys one are connected by a synchronous belt. Two cylindrical blocking frames are fixedly connected inside the top of the flocculation box. The two blocking frames are respectively sleeved on the outside of the two rotating drug inlet pipes. A sludge scraping assembly is provided between the inner wall of the blocking frame and the drug inlet nozzle to clean the contact area between the drug inlet nozzle and the blocking frame. The sludge scraping assembly includes multiple rubber blocks that are bonded to the inner circumference of the shielding frame and used in conjunction with the drug inlet nozzle. One side of the rubber block is arc-shaped and coaxial with the arc-shaped surface inside the shielding frame. A rubber cleaning ring is sleeved on the outer circumference of the end of the drug inlet nozzle, and the rubber cleaning ring and the end of the drug inlet nozzle are arc-shaped and used in conjunction with the shielding frame.

[0013] As a further embodiment of the present invention, one of the rotating drug inlet pipes is fixedly connected to an L-shaped frame on the outer circumference of the outer part of the flocculation box. The top of the flocculation box is rotatably connected to an electric push rod two via a mounting seat, and the telescopic end of the electric push rod two is rotatably connected to the end of the L-shaped frame. When the electric push rod two is fully retracted, the shielding frame completely blocks the drug inlet nozzle. A feed hopper connected to the flocculation box is installed on one side of the flocculation box.

[0014] As a further embodiment of the present invention, the blocking assembly includes two sets of guide rods fixedly connected to the inner wall of the top of the flocculation box, and each set of guide rods consists of four rods arranged in a circular array around the rotating drug inlet pipe. Each set of guide rods is slidably connected to a slip ring that coincides with the axis of the rotating drug inlet pipe. The bottom of the slip ring is hinged to four rotating plates arranged in a circular array. The inner walls on both sides of the flocculation box are fixedly connected to bottom ring frames, and the circular part of the bottom ring frame coincides with the axis of the rotating drug inlet pipe. The upper surface of the circular part of the bottom ring frame is rotatably connected to four arc-shaped blocking plates arranged in a circular array. The positions of the four arc-shaped blocking plates correspond to the four rotating plates. The top of each of the four arc-shaped blocking plates is fixedly connected to a square frame, and the top of the square frame is rotatably connected to the bottom of the rotating plate through a bearing. A horizontal plate is fixedly connected between two slip rings. An electric telescopic rod is fixedly connected to the outer wall of the top of the flocculation box, and the telescopic end of the electric telescopic rod passes through the flocculation box and is fixed to the horizontal plate. When the electric telescopic rod is fully extended, its bottom end does not contact the water in the flocculation box.

[0015] As a further embodiment of the present invention, an ultrasonic cleaning assembly for ultrasonically cleaning the interior of the flocculation box is provided at the top of the flocculation box and on one side of the dosing component. The ultrasonic cleaning assembly includes a vertical slide that runs through and is slidably connected to the top of the flocculation box, and the vertical slide is inverted U-shape. A downwardly extending support plate is fixedly connected to the inner wall of the top of the vertical slide. At least three ultrasonic vibrating rods are fixedly connected to the lower surface of the support plate. A drain pipe is passed through and fixedly connected to one side of the flocculation box. A rotating baffle plate is hinged to the outer wall of the top of the flocculation box at the passage of the support plate and the ultrasonic vibrating rods to cover the passage. Multiple recesses are fixedly connected to the upper surface of the rotating baffle plate to support the bottom of the ultrasonic vibrating rods.

[0016] As a further embodiment of the present invention, the flocculation box is provided with a dual-shaft stirring assembly for fully mixing the medicinal liquid in the flocculation box. The dual-shaft stirring assembly includes two rotating disks rotatably connected to the inner wall of the bottom of the flocculation box by bearing seats. Multiple rotating plates in a ring array are fixedly connected to the upper surface of the two rotating disks. The rotating shaft of the rotating disk extends downward through the flocculation box. The outer circumference of the extended end of the rotating shaft of the two rotating disks is fixedly connected to a pulley. The two pulleys are connected by a synchronous belt. A motor base is fixedly connected to the lower surface of the flocculation box and located below one of the pulleys. A drive motor for rotating the corresponding pulley along the axial direction is fixedly connected to the lower surface of the motor base.

[0017] The technical effects and advantages of this invention are as follows: 1. When it is not necessary to feed chemicals into the flocculation box, the present invention can rotate the chemical inlet pipe to rotate the chemical inlet nozzle into the shield to seal the end of the chemical inlet nozzle. With the cooperation of the sludge scraping component, the sludge on the surface of the chemical inlet nozzle and the inner wall of the shield is scraped away, preventing the presence of sludge in the chemical inlet nozzle and the part of the shield that contacts the chemical inlet nozzle, which would cause sludge to enter the chemical inlet nozzle during the sealing process. It can also prevent the sludge from drying and solidifying and causing blockage of the chemical inlet nozzle, which greatly reduces the frequency of maintenance of the chemical inlet nozzle.

[0018] 2. This invention achieves full coverage of the screw press body along its length by moving the high-pressure nozzle four times along the X-axis. After pausing at each X-axis, it then swings back and forth along the Y-axis, thus enabling full coverage cleaning of the screw press body along the diameter of the ring plates. Therefore, the combination of four movements along the X-axis and the back-and-forth swing along the Y-axis completes the high-pressure rinsing of the screw press body, effectively removing stubborn sludge between adjacent ring plates.

[0019] 3. The regular and thorough flushing and cleaning of this invention can effectively prevent wear and performance degradation of key components caused by sludge caking and corrosion, keep the equipment in good working condition for a long time, reduce downtime due to failure and the frequency of expensive component replacement, thereby reducing the total life cycle maintenance cost of the equipment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the front three-dimensional structure of Embodiment 1 of the present invention.

[0021] Figure 2 This is Embodiment 1 of the present invention. Figure 1 A schematic diagram of the rear three-dimensional structure.

[0022] Figure 3 This is an enlarged structural schematic diagram of the water filter tank according to Embodiment 1 of the present invention.

[0023] Figure 4 This is a schematic diagram of the high-pressure flushing assembly according to Embodiment 1 of the present invention.

[0024] Figure 5 This is a schematic diagram of a linear motor module according to Embodiment 1 of the present invention.

[0025] Figure 6 This is an enlarged schematic diagram of the flocculation box in Embodiment 1 of the present invention.

[0026] Figure 7 This is a schematic diagram of the internal structure of the flocculation box in Embodiment 1 of the present invention.

[0027] Figure 8 This is a schematic diagram of the dual-shaft stirring assembly structure according to Embodiment 1 of the present invention.

[0028] Figure 9 This is a schematic diagram of the dosing component structure according to Embodiment 1 of the present invention.

[0029] Figure 10 This is a schematic diagram of the shielding frame and the drug delivery nozzle structure according to Embodiment 1 of the present invention.

[0030] Figure 11 This is a schematic diagram of the ultrasonic cleaning assembly structure according to Embodiment 1 of the present invention.

[0031] Figure 12 This is Embodiment 1 of the present invention. Figure 9 A magnified structural diagram of part A.

[0032] Figure 13 This is a schematic diagram of the interior of the flocculation box in Embodiment 2 of the present invention.

[0033] Figure 14 This is a schematic diagram of the slip ring, arc-shaped shield, and rotating plate in Embodiment 2 of the present invention.

[0034] Figure 15 This is the second embodiment of the present invention. Figure 14 A magnified structural diagram of part B.

[0035] The attached figures are labeled as follows: 1. Sludge dewatering machine; 2. Water filter tank; 3. High-pressure flushing assembly; 301. L-shaped bracket one; 302. Slide table; 303. Connecting frame; 304. Sliding frame; 305. Water pipe bracket; 306. High-pressure nozzle; 307. Electric push rod one; 308. L-shaped bracket two; 309. Linear motor module; 310. Connecting block; 4. Flocculation box; 5. Dosing assembly; 501. Rotating inlet tube; 502. Dosing tube; 503. Inlet nozzle; 504. Pulley 1; 505. Synchronous belt 1; 506. Shielding frame; 507. Rubber cleaning ring; 508. Rubber block; 509. Rotating shielding plate; 510. Concave block; 511. L-shaped frame; 512. Electric push rod 2; 6. Ultrasonic cleaning assembly; 601. Vertical carriage; 602. Support plate; 603. Ultrasonic vibrator; 604. Drain pipe; 7. Dual-shaft stirring assembly; 701. Rotary disc; 702. Paddle plate; 703. Second pulley; 704. Second synchronous belt; 705. Motor base; 706. Drive motor; 8. Feed hopper; 9. Opening; 1001. Guide rod; 1002. Slip ring; 1003. Electric telescopic rod; 1004. Horizontal plate; 1005. Bottom ring frame; 1006. Arc-shaped cover plate; 1007. Rotating plate; 1008. Square frame. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example 1 Reference Figures 1-12 The present invention provides a municipal sludge treatment equipment, including a sludge dewatering machine 1, a filter tank 2 and a flocculation tank 4 inside the sludge dewatering machine 1. The outer walls on both sides of the filter tank 2 are provided with a high-pressure flushing assembly 3 for two-axis moving high-pressure spraying of the main body of the stacked screw in the filter tank 2. The top of the flocculation tank 4 is provided with a multi-layer multi-directional dosing assembly 5. The dosing assembly 5 includes two rotating dosing pipes 501 that pass through and are rotatably connected to the top of the flocculation box 4. The top of each rotating dosing pipe 501 is rotatably connected to a dosing pipe 502 via a rotary joint. The rotating dosing pipe 501 is located on the outer circumference of the inner circumference of the flocculation box 4 and is fixedly connected to four rows of dosing nozzles 503 by bolts. The four rows of dosing nozzles 503 are arranged in a ring array on the outer circumference of the rotating dosing pipe 501. The other end of the dosing pipe 502 is connected to an external dosing device via a hose. During dosing, the flocculant solution is transported through the dosing pipe 502 and the rotating dosing pipe 501, and the solution is sprayed out through the four rows of dosing nozzles 503 arranged in a ring array. The top inner wall of the flocculation box 4 is provided with a blocking component that extends into the cavity of the flocculation box 4, which is used to clean the sludge at the end of the drug inlet nozzle 503.

[0038] The sludge slurry to be dewatered enters the flocculation box 4 through the feed hopper 8. At the same time, the dosing component 5 injects flocculant into the flocculation box 4. Under the rotation of the twin-shaft stirring component 7, the agent and sludge are quickly and evenly mixed to form a firm and large floc. Since there is a height difference between the flocculation box 4 and the feed inlet of the screw press body in the filter tank 2 and the two are connected by a pipe, the conditioned sludge flows into the pipe due to gravity and flows into the screw press body in the filter tank 2. Under the pushing of the screw shaft and the squeezing and shearing action of the gap between the moving and stationary ring plates, the mud and water are separated. The separated filtrate is filtered out from the gap between the ring plates, and the dewatered mud cake is discharged from the end of the dewatering machine. At the same time, the screw press body is cleaned regularly by the high-pressure flushing component 3 and the ultrasonic cleaning component 6.

[0039] Existing fixed cleaning methods are ineffective. If each ring of the screw press body is assigned a separate water nozzle, two problems arise: first, insufficient water pressure; second, water waste. Therefore, to thoroughly rinse the outer surface of the screw press body... Figures 3-4 As shown, the present invention employs a high-pressure flushing assembly 3, which includes multiple sets of L-shaped brackets 301 fixedly connected to both sides of the filter tank 2 by bolts. Each set of L-shaped brackets 301 has a slide table 302 fixedly connected to its top by bolts. The upper surface of the slide table 302 has a connecting frame 303 spanning the filter tank 2 fixedly connected by bolts. Two sliding frames 304 are slidably connected to the connecting frame 303. The bottom of the two sliding frames 304 has two water pipe frames 305 corresponding to the main body of the stacked screw press fixedly connected by bolts. Multiple high-pressure nozzles 306 with the same spacing are fixedly connected to the outer circumference of the water pipe frame 305 by bolts. All the high-pressure nozzles 306 are perpendicular to the main body of the stacked screw press. The water inlet end of the water pipe frame 305 is connected to an external water supply device.

[0040] Furthermore, in order to enable the rinsing part to move along the X-axis, a set of L-shaped brackets 308 is fixedly connected to one side of the filter tank 2 and located between the two sets of L-shaped brackets 301 by bolts. A linear motor module 309 is fixedly connected to the top of the L-shaped brackets 308 by bolts. A connecting block 310 is fixedly connected to the upper surface of the mover of the linear motor module 309 by bolts. The top of the connecting block 310 is fixed to the connecting frame 303, which is used to make the connecting frame 303 slide vertically along the slide table 302 to rinse the screw press body along the X-axis.

[0041] Specifically, the high-pressure flushing assembly 3 performs high-pressure flushing on the main body of the stacked screw, and moves in the X-axis direction: the linear motor module 309 drives the entire connecting frame 303 to move along the slide table 302 in the X-axis direction through the connecting block 310, thereby driving the water pipe frame 305 with the high-pressure nozzle 306 installed to move in the X-axis direction.

[0042] It should be noted that the linear motor module 309 is an RXP45 synchronous belt linear module. By controlling the current of the input coil, a moving magnetic field is generated. This moving magnetic field interacts with the magnetic field of the fixed permanent magnet, thus directly converting electrical energy into mechanical energy for linear motion. In conjunction with the E3S-GS15N slot-type photoelectric induction switch, precise positioning is achieved. At the same time, the linear motor module 309 integrates an electromagnetic brake. When the mover stops, the spring force inside the brake pushes the friction plate, firmly clamping the mover onto the guide rail or a specific locking surface. When the mover needs to move, the electromagnetic force overcomes the spring force, releasing the mover to allow movement. This achieves four precise movements and locking of the high-pressure flushing component on the X-axis. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0043] The interval between any two adjacent high-pressure nozzles 306 on the same water pipe rack 305 is the distance of three high-pressure nozzles 306 widths. The high-pressure nozzles 306 move precisely four times in the X-axis direction through the self-locking function of the linear motor module 309.

[0044] like Figure 4 As shown, in order to enable the rinsing part to move along the Y-axis, a vertical connecting plate is fixedly connected to one end of the two sliding frames 304 by bolts. An electric push rod 307 is fixedly connected to one side of the outer wall of the connecting frame 303 by bolts. The telescopic end of the electric push rod 307 passes through the connecting frame 303 and is fixed to one side of the vertical connecting plate, so as to make the sliding frame 304 slide laterally along the connecting frame 303.

[0045] It should be noted that the electric linear actuator 307 is existing technology and can be used with magnetic switches, proximity switches or photoelectric switches to achieve precise control of the extension and retraction displacement of the actuator. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0046] Specifically, after the position of each movement in the X-axis direction is fixed, the movement in the Y-axis direction is: the electric push rod 307 telescopically drives the sliding frame 304 to slide along the connecting frame 303 in the X-axis direction, thereby adjusting the Y-axis position of the two water pipe frames 305.

[0047] By moving the high-pressure nozzle 306 four times along the X-axis, the entire length of the screw press body is fully covered. After pausing at each X-axis, it then swings back and forth along the Y-axis, thus enabling full-coverage cleaning of the diameter of the screw press body's rings. The combination of four movements along the X-axis and the back-and-forth swing along the Y-axis completes the high-pressure rinsing of the screw press body, effectively removing stubborn sludge between adjacent rings.

[0048] like Figure 7-10As shown, in order to enable the two rotating drug inlet pipes 501 to rotate synchronously and ensure that the ends are not blocked when not in the drug inlet state, the present invention adopts a blocking component including pulleys 504 respectively installed on the two rotating drug inlet pipes 501 and protruding from the outer circumference of the flocculation box 4. The two pulleys 504 are connected by a synchronous belt 505. Two cylindrical blocking frames 506 are fixedly connected to the inside of the top of the flocculation box 4 by bolts. The two blocking frames 506 are respectively sleeved on the outside of the two rotating drug inlet pipes 501. A sludge scraping component is provided between the inner wall of the blocking frame 506 and the drug inlet nozzle 503 to clean the contact part between the drug inlet nozzle 503 and the blocking frame 506. The sludge scraping assembly includes multiple rubber blocks 508 bonded to the inner circumference of the shielding frame 506 and used in conjunction with the drug inlet nozzle 503. One side of the rubber block 508 is arc-shaped and coaxial with the inner arc surface of the shielding frame 506. A rubber cleaning ring 507 is sleeved on the outer circumference of the end of the drug inlet nozzle 503. The rubber cleaning ring 507 and the end of the drug inlet nozzle 503 are arc-shaped and used in conjunction with the shielding frame 506. The drug solution can be dispersed and administered in multiple layers and directions in the flocculation box 4, avoiding the problem of local over-dosing or under-dosing.

[0049] When the dosing is stopped, rotate the inlet pipe 501 to make the inlet nozzle 503 screw into the shield 506. The rubber cleaning ring 507 cooperates with the rubber block 508 to scrape off the sludge on the surface of the inlet nozzle 503 and the sludge attached to the shield 506, so as to prevent the inlet nozzle 503 from being blocked.

[0050] like Figure 9 As shown, one of the rotating drug inlet pipes 501 is located on the outer circumferential wall of the flocculation box 4 and is fixedly connected to an L-shaped frame 511 by bolts. The top of the flocculation box 4 is rotatably connected to an electric push rod 512 by a mounting base, and the telescopic end of the electric push rod 512 is rotatably connected to the end of the L-shaped frame 511. When the electric push rod 512 is fully retracted, the shielding frame 506 completely blocks the drug inlet nozzle 503. A feed hopper 8 connected to the flocculation box 4 is installed on one side of the flocculation box 4.

[0051] It should be noted that the electric push rod 2512 is existing technology and can be used with magnetic switches, proximity switches or photoelectric switches to achieve precise control of the push rod's extension and retraction displacement. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0052] like Figure 11As shown, when the equipment operates for a long time, stubborn dirt accumulates on the inner wall of the flocculation box 4 and in the gaps of the baffle plate 702. To facilitate the treatment of the sludge that is difficult to clean in these gaps, the present invention provides an ultrasonic cleaning component 6 for ultrasonic cleaning of the interior of the flocculation box 4 at the top of the flocculation box 4 and on one side of the dosing component 5. The ultrasonic cleaning component 6 includes a vertical slide 601 that runs through and is slidably connected to the top of the flocculation box 4, and the vertical slide 601 is inverted U-shaped. The inner wall of the top of the vertical slide 601 is fixedly connected by bolts. A downward-extending support plate 602 is provided, and at least three ultrasonic vibrating rods 603 are fixedly connected to the lower surface of the support plate 602 by bolts. A drain pipe 604 is installed through one side of the flocculation box 4 and fixedly connected by bolts. A rotating baffle plate 509 is rotatably connected to the top outer wall of the flocculation box 4 at the passage of the support plate 602 and the ultrasonic vibrating rods 603 by a hinge to cover the passage. Multiple recesses 510 are fixedly connected to the upper surface of the rotating baffle plate 509 by bolts to support the bottom end of the ultrasonic vibrating rods 603.

[0053] At the same time, the ultrasonic cleaning component 6 can also thoroughly clean the drug inlet nozzle 503 and the blocking component, effectively improving the spraying effect of the drug inlet nozzle 503 and the blocking effect of the blocking component.

[0054] It should be noted that the ultrasonic vibrator 603 model is the FKD-103 simple immersion ultrasonic vibrator, which utilizes the "cavitation effect" in liquids to generate powerful physical cleaning force. Cavitation bubbles grow and collapse instantly in a very short time. The powerful force can impact and peel off stubborn sludge and dirt adhering to the inner wall of the flocculation box 4, the deflector plate 702, and other corners, achieving a deep cleaning effect without dead angles that cannot be achieved by manual or ordinary water rinsing. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0055] like Figure 11 As shown, first close the drain pipe 604, then inject clean water into the flocculation box 4 until the liquid level is above the top of the inlet nozzle 503. Next, lift the vertical slide 601 and remove the ultrasonic vibrator 603 from the recess 510. Then, rotate the baffle 509 to expose the opening 9 located at the top of the flocculation box 4 and below the rotating baffle 509. Then, lower the vertical slide 601 to immerse the ultrasonic vibrator 603 in the clean water in the flocculation box 4. Start the ultrasonic vibrator 603 to generate high-frequency vibration, forming countless tiny cavitation bubbles in the clean water. When the bubbles burst, they generate strong local shock waves and micro-jet streams, which can effectively peel off and crush the dirt adhering to the inner wall of the flocculation box 4, the baffle plate 702, and all other parts, achieving deep cleaning without dead angles. The wastewater after cleaning is discharged through the drain pipe 604.

[0056] Furthermore, when not in use, the ultrasonic cleaning assembly 6 is supported. In this invention, a rotating baffle 509 is rotatably connected to the passage of the support plate 602 and the ultrasonic vibrator 603 on the top outer wall of the flocculation box 4 via a hinge, which is used to cover the passage. Multiple recesses 510 are fixedly connected to the upper surface of the rotating baffle 509 by bolts, which are used to support the bottom end of the ultrasonic vibrator 603.

[0057] After cleaning, lift the vertical slide 601 until the ultrasonic vibrator 603 is raised above the flocculation box 4. Then rotate the baffle 509 to cover the opening 9. Then lower the vertical slide 601 until the bottom of the ultrasonic vibrator 603 is inserted into the recess 510.

[0058] like Figure 8 As shown, in order to fully mix the reagent and the sludge solution, the flocculation tank 4 in this invention is equipped with a dual-shaft stirring assembly 7 to fully mix the reagent solution in the flocculation tank 4. The dual-shaft stirring assembly 7 includes two rotating disks 701 rotatably connected to the inner wall of the bottom of the flocculation tank 4 by bearing seats. Multiple paddles 702 arranged in a ring array are fixedly connected to the upper surface of the two rotating disks 701 by bolts. The rotating shaft of the rotating disk 701 passes through the flocculation tank 4 and is rotatably connected to the flocculation tank 4 by a mechanical seal (preferably M37G series). The bottom end of the rotating shaft of the rotating disk 701 extends downward. The outer circumference of the extended end of the rotating shaft of the two rotating disks 701 is fixedly connected to the second pulley 703 by bolts. The two second pulleys 703 are connected by a synchronous belt 704. A motor base 705 is fixedly connected to the lower surface of the flocculation tank 4 and located below one of the second pulleys 703 by bolts. A drive motor 706 that causes the corresponding second pulley 703 to rotate axially is fixedly connected to the lower surface of the motor base 705 by bolts.

[0059] While adding chemicals, the dual-shaft mixing assembly 7 achieves uniform mixing. During mixing, the drive motor 706 drives the two pulleys 703 to rotate synchronously in opposite directions via the synchronous belt 704, thereby driving the two rotating disks 701 and the baffles 702 on them to rotate, ensuring that the sludge and the chemicals come into full and uniform contact in a short time to form ideal flocs.

[0060] It should be noted that the drive motor 706 is existing technology. It is a servo motor with an encoder. The number of rotations and rotation angle of the motor output shaft are controllable and highly accurate. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0061] It should be noted that the sludge dewatering machine 1 also includes a drive unit, a screw press body (core dewatering unit), a filtrate collection component, a frame and cover, and a control component. During operation, the raw sludge with extremely high water content is fully mixed with flocculant in the mixing reaction tank. The fine particles in the sludge agglomerate into larger and stronger flocs, creating conditions for solid-liquid separation. It should be noted that the main body of the screw press (core dewatering unit) can refer to a screw press sludge dewatering machine with publication number CN210313972U, which includes fixed rings, gaskets, moving rings, screw shaft, back pressure plate, etc. The screw shaft passes through the center hole of all fixed rings and moving rings. All fixed rings are fixedly installed on the frame in sequence and locked in position. All moving rings are floatingly sleeved on the screw shaft in sequence. The lug of each moving ring is embedded in the guide rod of the frame or cooperates with the anti-rotation pin, so that it can only move slightly axially. The back pressure plate is installed on the frame at the sludge outlet and its position is adjustable. The screw shaft is driven to rotate at low speed through the drive shaft and eccentric mechanism. When the screw shaft rotates, its variable pitch blades push the sludge from the wide feed end to the narrow discharge end. The space volume is continuously compressed, generating huge axial extrusion force on the sludge. The water in the sludge is squeezed out and filtered out through the fixed gap between the rings. Driven by the friction of the sludge moving forward, the floating moving ring attempts to follow the movement, but is restricted by the anti-rotation pin, thus generating continuous and minute axial shear between it and the stationary fixed ring. This shear serves two purposes: first, to continuously scrape the gaps between the ring plates to prevent sludge blockage; and second, to knead the sludge flocs and squeeze out more internal bound water. Finally, the highly compressed sludge is blocked by the back pressure plate at the outlet, forming the final pressing zone. Adjusting the gap of the back pressure plate precisely controls the dryness of the final sludge output. This is existing technology, and those skilled in the art can set it according to actual needs, so it will not be elaborated here.

[0062] The present invention is used in the following steps: S1: First, the high-pressure flushing assembly 3 performs high-pressure flushing on the main body of the screw press. X-axis movement: The linear motor module 309 drives the entire connecting frame 303 to move along the slide table 302 in the X-axis direction via the connecting block 310, thereby driving the water pipe frame 305, which is equipped with high-pressure nozzles 306, to move along the X-axis direction. Each time it moves along the X-axis direction, the linear motor module 309 and its self-locking function precisely move and lock the position, ensuring that the high-pressure water jet is accurately and stably aligned with the flushing area. After fixing the position in each X-axis direction movement, Y-axis movement: The electric push rod 307 extends and retracts to drive the sliding frame 302. 4. Slide the connecting frame 303 along the X-axis direction to adjust the Y-axis position of the two water pipe frames 305, and perform biaxial high-pressure flushing on the entire outer surface of the screw press body to remove stubborn sludge clogging between the ring plates. Therefore, by moving the high-pressure nozzle 306 four times along the X-axis, the screw press body is fully covered in the length direction. After each X-axis pause, it swings back and forth in the Y-axis direction, thus enabling full-coverage cleaning of the screw press body in the diameter direction of the ring plates. Thus, the high-pressure flushing of the screw press body is completed by the four movements of the X-axis and the back-and-forth swing of the Y-axis, effectively removing stubborn sludge between two adjacent ring plates. S2: During dosing, the flocculant solution is delivered through the dosing tube 502 and the rotating inlet tube 501. The solution is sprayed out through the inlet nozzle 503. Since the four nozzles are arranged in a ring array and the two rotating inlet tubes 501 can rotate synchronously through the pulley 504 and the synchronous belt 505, the solution can be dispersed and administered in multiple layers and directions within the flocculation box 4, avoiding the problem of local over-dosing or under-dosing. When dosing is stopped, the rotating inlet tube 501 is rotated, causing the inlet nozzle 503 to be screwed into the shield 506. The rubber cleaning ring 507 cooperates with the rubber block 508 to scrape off the sludge on the surface of the inlet nozzle 503 and the sludge attached to the shield 506, preventing the inlet nozzle 503 from being blocked. S3: While adding the medicine, the dual-shaft stirring assembly 7 achieves uniform mixing. During stirring, the drive motor 706 drives the two pulleys 703 to rotate synchronously in opposite directions through the synchronous belt 704, thereby driving the two rotating disks 701 and the baffles 702 on them to rotate, ensuring that the sludge and the medicine come into full and uniform contact in a short time to form ideal flocs. S4: When stubborn dirt accumulates on the inner wall of the flocculation box 4 and in the gaps of the baffle plate 702 after long-term operation, first close the drain pipe 604, then inject clean water into the flocculation box 4 until the liquid level is above the top of the inlet nozzle 503. Next, lift the vertical slide 601 and remove the ultrasonic vibrator 603 from the recess 510. Then, rotate the baffle plate 509 so that it rotates along the rotating connection, exposing the baffle plate 509 located at the top of the flocculation box 4. The opening 9 below 9 is then lowered, followed by the vertical slide 601, which immerses the ultrasonic vibrator 603 in the clean water inside the flocculation tank 4. The ultrasonic vibrator 603 is then activated to generate high-frequency vibration, forming countless tiny cavitation bubbles in the clean water. When the bubbles burst, they generate strong local shock waves and micro-jet streams, which can effectively peel off and pulverize the dirt adhering to the inner wall of the flocculation tank 4, the surface of the baffle plate 702, and all other components, achieving deep cleaning without dead angles. The wastewater after cleaning is discharged through the drain pipe 604.

[0063] Example 2 Reference Figures 13-15As another implementation of the blocking component: the blocking component includes two sets of guide rods 1001 fixedly connected to the inner wall of the top of the flocculation box 4 by bolts, and each set of guide rods 1001 consists of four rods arranged in a ring array around the rotating drug inlet pipe 501. Each set of guide rods 1001 is slidably connected to a slip ring 1002 that coincides with the axis of the rotating drug inlet pipe 501. Four rotating plates 1007 arranged in a ring array are hinged to the bottom of the slip ring 1002. Bottom ring frames 1005 are fixedly connected to the inner walls of both sides of the flocculation box 4 by bolts, and the ring portion of the bottom ring frame 1005 coincides with the axis of the rotating drug inlet pipe 501. Four arc-shaped baffles 1006 arranged in a ring are rotatably connected to the upper surface of the annular part of the frame 1005. The positions of the four arc-shaped baffles 1006 correspond to the four rotating plates 1007. The top of each of the four arc-shaped baffles 1006 is fixedly connected to a square frame 1008 by bolts. The top of the square frame 1008 is rotatably connected to the bottom of the rotating plate 1007 by bearings. A horizontal plate 1004 is fixedly connected between two slip rings 1002 by bolts. An electric telescopic rod 1003 is fixedly connected to the top outer wall of the flocculation box 4 by bolts. The telescopic end of the electric telescopic rod 1003 passes through the flocculation box 4 and is fixed to the horizontal plate 1004.

[0064] When the electric telescopic rod 1003 is fully extended, its bottom end does not contact the water in the flocculation box 4. When using this method, the rotating inlet pipe 501 is fixed to the flocculation box 4 by bolts, and no rotation is required. In this method, the arc-shaped inner wall of the arc-shaped baffle 1006 also has a rubber block 508 embedded to protect the inlet nozzle 503.

[0065] Specifically, initially, the rotating plate 1007 and the arc-shaped shield 1006 form an obtuse angle. When spraying is required using this method, the electric telescopic rod 1003 is first activated to retract, the horizontal plate 1004 and the slip ring 1002 move upward, and the four rotating plates 1007 pull the tops of the four arc-shaped shields 1006 outward, while the bottoms of the arc-shaped shields 1006 rotate, thereby increasing the obtuse angle between the rotating plate 1007 and the arc-shaped shield 1006. The arc-shaped shield 1006 and the spray nozzle 5... 03 Separate, then add the medicine. After the medicine is added, start the electric telescopic rod 1003 to extend, the horizontal plate 1004 and the slip ring 1002 move down, and then pull the top of the four arc-shaped baffles 1006 inward through the four rotating plates 1007, and the bottom of the arc-shaped baffles 1006 rotates in the opposite direction, thereby reducing the obtuse angle between the rotating plates 1007 and the arc-shaped baffles 1006, and the arc-shaped baffles 1006 approach the medicine inlet nozzle 503 to block the end of the medicine inlet nozzle 503.

[0066] When in use, the sludge liquid level inside the flocculation box 4 should only cover the topmost inlet nozzle 503 and not exceed the square frame 1008, which can effectively improve the service life of the rotating position of the square frame 1008.

[0067] It should be noted that the electric telescopic rod 1003 is existing technology and can be used with magnetic switches, proximity switches or photoelectric switches to achieve precise control of the telescopic displacement of the rod. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0068] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change. The electronic components and modules used in this invention can all be commonly used parts on the market that can achieve the specific functions in this case, and the specific models and sizes can be selected and adjusted according to actual needs; The accompanying drawings of the embodiments disclosed in this invention only involve structures relevant to the embodiments disclosed in this invention. Other structures can be referred to with common designs. Unless otherwise specified, the same embodiment and different embodiments of this invention can be combined with each other.

Claims

1. A municipal sludge treatment device, comprising a sludge dewatering machine (1), and a filter tank (2) and a flocculation tank (4) inside the sludge dewatering machine (1), characterized in that: The outer walls on both sides of the filter tank (2) are provided with a high-pressure flushing assembly (3) for two-axis moving high-pressure spraying of the main body of the stacked screw inside the filter tank (2), and the top of the flocculation box (4) is provided with a multi-layer multi-directional drug dosing assembly (5). The dosing assembly (5) includes two rotating dosing pipes (501) that pass through and are rotatably connected to the top of the flocculation box (4). The top of each rotating dosing pipe (501) is rotatably connected to a dosing pipe (502) via a rotary joint. At least four rows of dosing nozzles (503) are installed on the outer circumference of the rotating dosing pipe (501) and the four rows of dosing nozzles (503) are arranged in a ring array on the outer circumference of the rotating dosing pipe (501). The top inner wall of the flocculation box (4) is provided with a blocking component extending into the cavity of the flocculation box (4), and the blocking component is used to block the end of the drug inlet nozzle (503).

2. The municipal sludge treatment equipment according to claim 1, characterized in that: The high-pressure flushing assembly (3) includes multiple sets of L-shaped brackets (301) fixedly connected to both sides of the filter tank (2). Each set of L-shaped brackets (301) has a slide table (302) fixedly connected to its top. The upper surface of the slide table (302) has a connecting frame (303) spanning the filter tank (2). Two sliding frames (304) are slidably connected to the connecting frame (303). The bottom of the two sliding frames (304) has two water pipe frames (305) corresponding to the main body of the stacked screw. Multiple high-pressure nozzles (306) with the same intervals are fixedly connected to the outer circumference of the water pipe frame (305). The multiple high-pressure nozzles (306) are all perpendicular to the main body of the stacked screw. The water inlet end of the water pipe frame (305) is connected to an external water supply device through a hose.

3. The municipal sludge treatment equipment according to claim 2, characterized in that: A set of L-shaped brackets (308) is fixedly connected to one side of the water filter tank (2) and between the two sets of L-shaped brackets (301). A linear motor module (309) is fixedly connected to the top of the L-shaped brackets (308). A connecting block (310) is fixedly connected to the upper surface of the mover of the linear motor module (309). The top of the connecting block (310) is fixed to the connecting frame (303) to make the connecting frame (303) slide vertically along the slide (302).

4. A municipal sludge treatment device according to claim 2, characterized in that: A vertical connecting plate is fixedly connected at one end between the two sliding frames (304). An electric push rod (307) is fixedly connected to one side of the outer wall of the connecting frame (303). The telescopic end of the electric push rod (307) passes through the connecting frame (303) and is fixed to one side of the vertical connecting plate, so as to make the sliding frame (304) slide laterally along the connecting frame (303).

5. A municipal sludge treatment device according to claim 3, characterized in that: The interval between any two adjacent high-pressure nozzles (306) on the same water pipe rack (305) is the distance of three high-pressure nozzles (306).

6. A municipal sludge treatment device according to claim 1, characterized in that: The blocking assembly includes pulleys (504) installed on the two rotating drug inlet pipes (501) and protruding from the outer circumference of the flocculation box (4). The two pulleys (504) are connected by a synchronous belt (505). Two cylindrical shields (506) are fixedly connected inside the top of the flocculation box (4). The two shields (506) are respectively sleeved on the outside of the two rotating drug inlet pipes (501). A sludge scraping assembly is provided between the inner wall of the shield (506) and the drug inlet nozzle (503) to clean the contact area between the drug inlet nozzle (503) and the shield (506). The sludge scraping assembly includes multiple rubber blocks (508) bonded to the inner circumference of the shielding frame (506) for use with the drug inlet nozzle (503). One side of the rubber block (508) is arc-shaped and coaxial with the inner arc surface of the shielding frame (506). A rubber cleaning ring (507) is sleeved on the outer circumference of the end of the drug inlet nozzle (503). The rubber cleaning ring (507) and the end of the drug inlet nozzle (503) are arc-shaped and used in conjunction with the shielding frame (506).

7. A municipal sludge treatment device according to claim 6, characterized in that: One of the rotating drug inlet pipes (501) is located on the outer circumferential outer wall of the flocculation box (4) and is fixedly connected to an L-shaped frame (511). The top of the flocculation box (4) is rotatably connected to an electric push rod (512) via a mounting seat. The telescopic end of the electric push rod (512) is rotatably connected to the end of the L-shaped frame (511). When the electric push rod (512) is fully retracted, the shielding frame (506) completely blocks the drug inlet nozzle (503). A feed hopper (8) connected to the flocculation box (4) is installed on one side of the flocculation box (4).

8. A municipal sludge treatment device according to claim 1, characterized in that: The blocking assembly includes two sets of guide rods (1001) fixedly connected to the inner wall of the top of the flocculation box (4), and each set of guide rods (1001) consists of four rods arranged in a ring array around the rotating drug inlet pipe (501). Each set of guide rods (1001) is slidably connected to a slip ring (1002) that coincides with the axis of the rotating drug inlet pipe (501). The bottom of the slip ring (1002) is hinged to four rotating plates (1007) arranged in a ring array. The inner walls of both sides of the flocculation box (4) are fixedly connected to bottom ring frames (1005), and the ring portion of the bottom ring frame (1005) coincides with the axis of the rotating drug inlet pipe (501). The upper surface of the ring portion of the bottom ring frame (1005) is rotatably connected to four rotating plates (1007) arranged in a ring array. The circular array of arc-shaped baffles (1006) has four arc-shaped baffles (1006) and four rotating plates (1007) in corresponding positions. The top of each of the four arc-shaped baffles (1006) is fixedly connected to a square frame (1008), and the top of the square frame (1008) is rotatably connected to the bottom of the rotating plate (1007) through a bearing. A horizontal plate (1004) is fixedly connected between the two slip rings (1002). An electric telescopic rod (1003) is fixedly connected to the top outer wall of the flocculation box (4), and the telescopic end of the electric telescopic rod (1003) passes through the flocculation box (4) and is fixed to the horizontal plate (1004). When the electric telescopic rod (1003) is fully extended, its bottom end does not contact the water in the flocculation box (4).

9. A municipal sludge treatment device according to claim 1, characterized in that: The top of the flocculation box (4) and on one side of the dosing assembly (5) is provided with an ultrasonic cleaning assembly (6) for ultrasonic cleaning of the interior of the flocculation box (4). The ultrasonic cleaning assembly (6) includes a vertical slide (601) that runs through and is slidably connected to the top of the flocculation box (4). The vertical slide (601) is inverted U-shaped. A downwardly extending support plate (602) is fixedly connected to the inner wall of the top of the vertical slide (601). At least three ultrasonic vibrating rods (603) are fixedly connected to the lower surface of the support plate (602). A drain pipe (604) runs through and is fixedly connected to one side of the flocculation box (4). A rotating baffle plate (509) is rotatably connected to the outer wall of the top of the flocculation box (4) by a hinge. An opening (9) is opened at the top of the flocculation box (4) and below the rotating baffle plate (509). Multiple recesses (510) are fixedly connected to the upper surface of the rotating baffle plate (509) for supporting the bottom of the ultrasonic vibrating rods (603).

10. A municipal sludge treatment device according to claim 1, characterized in that: The flocculation box (4) is equipped with a dual-shaft stirring assembly (7) for fully mixing the liquid in the flocculation box (4). The dual-shaft stirring assembly (7) includes two rotating disks (701) rotatably connected to the inner wall of the bottom of the flocculation box (4) by bearing seats. Multiple paddles (702) arranged in a ring array are fixedly connected to the upper surface of the two rotating disks (701). The rotating shaft of the rotating disk (701) extends downward through the flocculation box (4). The outer circumference of the extended end of the rotating shaft of the two rotating disks (701) is fixedly connected to the second pulley (703). The two second pulleys (703) are connected by a synchronous belt (704). A motor seat (705) is fixedly connected to the lower surface of the flocculation box (4) and located below one of the second pulleys (703). A drive motor (706) for rotating the corresponding second pulley (703) axially is fixedly connected to the lower surface of the motor seat (705).

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