Riverway sludge multistage dewatering treatment equipment

Abstract

The application provides a river sludge multi-stage dewatering treatment equipment, which comprises a homogenizing barrel, a mesh belt water filter, a belt dewatering machine and a mud cake packing machine arranged in sequence; the bottom of the belt dewatering machine is provided with a supporting seat, the inside of the supporting seat is symmetrically provided with flow guide plates, and a water falling channel is formed between the flow guide plates; the mud cake packing machine comprises a side supporting frame, and the bottom of the side supporting frame is provided with a lower supporting part; an upper lifting assembly is installed at the output end of the water falling channel, which is used for lifting the end of the packing material belt to the output end of the belt dewatering machine, so that the mode is switched from water filtering to packing. The continuous belt structure of the packing material belt is formed by connecting belts and interval independent loading bags, the loading bags are provided with reserved operation areas and reserved rubber rings, the water filtering laying, bag opening and heat sealing requirements can be met at the same time, the water filtering element and the packing bag are not needed to be used separately, the sludge water secondary filtering and the mud cake bag sealing are completed in the same material belt in sequence, and continuous feeding, continuous water filtering and continuous packing are realized.

Description

Technical Field

[0001] This invention relates to the field of river sludge treatment technology, specifically to a multi-stage dewatering treatment device for river sludge. Background Technology

[0002] With the deepening of my country's ecological civilization construction strategy, river ecological governance has become one of the core tasks in winning the battle against pollution, improving the living environment, and ensuring water resource security. In recent years, various regions have continuously increased their efforts in river dredging, water body restoration, and comprehensive watershed management. Through a series of measures such as pollution source control, ecological bank protection, and sediment dredging, they have effectively improved river water quality and restored river ecological functions. At the same time, the large amount of river sludge generated during river dredging and sediment remediation has become an environmental problem that restricts the effectiveness of ecological governance and urgently needs to be solved.

[0003] River sludge, as a "reservoir" of water pollutants, mainly originates from industrial wastewater discharge, domestic sewage flushing, surface runoff, aquatic organism metabolism, and long-term sediment accumulation. Its composition is complex and variable, containing not only a large amount of water (usually with a water content of over 80%), undegraded organic matter, and animal and plant remains, but also heavy metals (such as lead, cadmium, mercury, etc.), recalcitrant pollutants, and large particulate impurities (such as sand, gravel, and debris).

[0004] If these sludge ...

[0005] Currently, the treatment of river sludge mainly relies on a segmented process. First, the sludge is initially dewatered using filter presses, centrifuges, or plate and frame dewatering equipment to reduce its moisture content to about 60%-80%, forming loose sludge cakes. Then, the dewatered sludge cakes are transferred to individual packaging bags for sealing by manual or mechanical means, and finally, the sludge is stored, transported, and disposed of (such as landfill, incineration, resource utilization, etc.).

[0006] However, in the dewatering stage, the industry generally uses a single mechanical squeezing method, lacking a design for precise interception and recovery of fine sludge particles in the filtrate. This results in some fine sludge being lost with the filtrate during dewatering. In the packaging stage, additional consumables such as filter cloths, woven bags, or plastic bags are required. The filter cloths serve as filtration aids, while the woven bags or plastic bags contain the sludge cake; these two consumables are used independently and are not interconnected. Although some processing systems attempt to simply connect the dewatering and packaging processes to reduce losses during sludge cake transfer, manual intervention is still required for filter cloth replacement, packaging bag replenishment, and equipment mode switching. This prevents fully automated continuous operation and can easily lead to problems such as sludge cake scattering and filtrate leakage during the connection process, affecting processing efficiency. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a multi-stage dewatering treatment device for river sludge, which solves the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: A multi-stage dewatering treatment device for river sludge includes a homogenizing tank, a mesh belt filter, a belt dewatering machine, and a sludge cake baler arranged sequentially. The belt dewatering machine has a support base at its bottom, with guide plates symmetrically installed inside the support base, forming a water-falling channel between the guide plates. A water storage tank is located at the bottom of the water-falling channel to collect the sludge water after secondary filtration. The sludge cake baler includes side support frames, a sliding plate, a lower support component, a squeezing component, an opening constraint component, and a heat-sealing component. The side support frames are symmetrically arranged at the output end of the support base, and a sliding plate is slidably installed between the two sets of side support frames. The inner wall of the sliding plate extends from top to bottom... The machine is equipped with an opening constraint component, a heat sealing component, and an extrusion component in sequence. A lower support component is installed at the bottom of the side support frame to support or release the packaging bag. A material feeding component is installed at the input end of the drainage channel for horizontally outputting the packaging material belt. The packaging material belt includes a connecting belt and loading bags. Multiple sets of independent loading bags are spaced apart on the surface of the connecting belt. The opening of the loading bags is provided with a reserved rubber ring for subsequent heat sealing. An upward lifting component is installed at the output end of the drainage channel to lift the end of the packaging material belt to the output end of the belt dewatering machine, realizing the switching from water filtration mode to packaging mode.

[0009] Compared with the prior art, the present invention has the following beneficial effects: 1. The packaging material uses a continuous strip structure with connecting belts and spaced independent loading bags. The loading bags have reserved operating areas and reserved rubber rings, which can simultaneously meet the needs of water filtration laying, bag opening and heat sealing. There is no need to use separate water filtration components and packaging bags. The same material belt completes the secondary filtration of sludge water and the bagging and sealing of mud cake in sequence. With the cooperation of various components, continuous feeding, continuous water filtration and continuous packaging are achieved. The humidified loading bags are flexible and not brittle due to the water adsorption on the surface. They can adapt to the shape of the mud cake and deform accordingly, which can both compact the mud cake and prevent damage and leakage.

[0010] 2. This invention proposes a clamping component that precisely clamps the end of the packaging material strip through the material strip inlet, and the active guide rail lifts it from the low-level filtration path to the mud cake output end, realizing a seamless switch from filtration mode to packaging mode. The continuous structure ensures reliable clamping and smooth lifting, and makes the end of the material strip accurately aligned with the mud cake falling position, solving the problems of cumbersome process connection and inaccurate positioning, and improving the continuity of operation.

[0011] 3. The bag opening is sealed by heating and fusing the pre-reserved rubber ring through the heat-sealing plate. Hot air is introduced into the connecting cover to assist in heating, which improves the sealing firmness and solves the problems of poor sealing and easy leakage by manual sealing. At the same time, the pre-reserved rubber ring design makes the heat sealing operation more convenient and efficient. Attached Figure Description

[0012] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts. Wherein: Figure 1 A schematic diagram of the overall structure proposed in one embodiment of the present invention is shown; Figure 2 A schematic diagram of the feeding assembly structure proposed in one embodiment of the present invention is shown; Figure 3 A schematic diagram of the internal structure of the water-falling channel proposed in one embodiment of the present invention is shown. Figure 1 ; Figure 4 A schematic diagram of the internal structure of the water-falling channel proposed in one embodiment of the present invention is shown. Figure 2 ; Figure 5 A schematic diagram of the mud cake packaging machine and side support frame structure proposed in one embodiment of the present invention is shown; Figure 6 A schematic diagram of the internal structure of the lifting support proposed in one embodiment of the present invention is shown; Figure 7 A schematic diagram of the internal structure of the homogenizing tank proposed in one embodiment of the present invention is shown. Figure 8 This illustrates an embodiment of the invention. Figure 2 A magnified structural diagram of part A in the diagram; Figure 9 A schematic diagram of the external structure of the mud cake packaging machine proposed in one embodiment of the present invention is shown; Figure 10 A schematic diagram of the slitting component and lifting component proposed in one embodiment of the present invention is shown; Figure 11 A schematic diagram of the slitting component structure proposed in one embodiment of the present invention is shown; Figure 12 A schematic diagram of the intermediate mounting plate and lifting assembly structure proposed in one embodiment of the present invention is shown; Figure 13 A schematic diagram of the lifting component structure proposed in one embodiment of the present invention is shown; Figure 14 A schematic diagram of the structure of the mud cake packaging machine proposed in one embodiment of the present invention is shown; Figure 15 A schematic diagram of the heat-sealing component and opening constraint component proposed in one embodiment of the present invention is shown; Figure 16 A schematic diagram of the heat-sealing component structure proposed in one embodiment of the present invention is shown; Figure 17 A schematic diagram of the appearance structure of the packaging material strip proposed in one embodiment of the present invention is shown; Figure 18 A schematic diagram of the internal structure of the packaging material strip proposed in one embodiment of the present invention is shown.

[0013] 100. Homogenizing tank; 101. Homogeneous components; 200. Mesh belt water filter; 300. Belt dewatering machine; 301. Support base; 302. Guide plate; 303. Water discharge channel; 304. Water storage tank; 305. Limiting strip; 306. Limiting port; 400. Mud cake packaging machine; 401. Side support frame; 402. Slide plate; 403. Lower support component; 431. Bracket; 432. Pallet; 433. Flip plate drive cylinder; 404. Extrusion component; 441. Inner extrusion component; 442. Outer extrusion component; 443. Extrusion drive cylinder; 444. Extrusion plate; 405. Opening constraint component; 451. Upper fixed plate; 452. Lower fixed plate; 453. Opening cylinder; 454. Constraint toothed plate; 455. Rubber anti-slip mat; 406. Heat sealing component; 461. Docking cover; 462. Heat sealing and pressing cylinder; 463. Heat sealing plate; 464. Pipe interface; 465. Exhaust port; 500. Feeding assembly; 501. Unwinding bracket; 502. Feeding roller; 503. Horizontal guide rod; 600. Packaging material strap; 601. Connecting strap; 602. Loading bag; 603. Reserved rubber ring; 604. Operating area; 700. Lifting assembly; 701. Lifting bracket; 702. Intermediate mounting plate; 703. Lifting guide seat; 705. Mounting slot; 706. Active guide rail; 704. Clamping component; 741. Clamping lifting block; 742. Clamping drive cylinder; 743. Material belt inlet; 744. Mounting cavity; 745. Clamping block; 800. Slitting assembly; 801. Slitting guide frame; 802. Slitting drive cylinder; 803. Transition guide rod; 804. Discharge guide rod; 805. Active traction roller assembly. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0015] To address the technical problems in the background section, a multi-stage dewatering treatment device for river sludge is provided as follows: Combination Figures 1-18 As shown, the present invention provides a multi-stage dewatering treatment device for river sludge, comprising a homogenizing tank 100, a mesh belt filter 200, a belt dewatering machine 300, a sludge cake baler 400, a feeding assembly 500, a packaging belt 600, a lifting assembly 700, and a cutting assembly 800 arranged sequentially. Specifically, the belt dewatering machine 300 has a support base 301 at its bottom, and guide plates 302 are symmetrically installed inside the support base 301. A water discharge channel 303 is defined between the two guide plates 302, and a water storage tank 304 is provided at the bottom of the water discharge channel 303. The feeding assembly 500 is installed at the input end of the water discharge channel 303 for horizontally outputting the packaging belt 600. The lifting assembly 700 is installed at the output end of the water discharge channel 303, and the cutting assembly 800 is installed at the bottom of the lifting assembly 700.

[0016] It should be noted that existing river sludge dewatering equipment typically uses single-pass dewatering, resulting in incomplete solid-liquid separation. Fine sludge particles are easily lost with the water, and the filtration and packaging stages require separate filter cloths and individual packaging bags, leading to high consumable consumption and frequent replacements, increasing treatment costs and maintenance workload. Generally, traditional processes require additional filtration mechanisms for secondary sludge water filtration, and sludge cake bagging also requires separate packaging bags, resulting in cumbersome procedures and complex equipment.

[0017] Based on this, as an embodiment of the present invention, the proposed packaging material belt 600 includes a connecting belt 601 and a loading bag 602. Specifically, multiple sets of independent loading bags 602 are spaced apart on the surface of the connecting belt 601 along its length direction. The three sides of each loading bag 602 are fixedly connected to the connecting belt 601, thereby forming a continuous bag-shaped unit on the connecting belt 601, so as to facilitate the subsequent sequential completion of water filtration and bagging operations.

[0018] Furthermore, each loading bag 602 has a pre-reserved rubber ring 603 at its opening. This pre-reserved rubber ring 603 consists of two rubber rings: one is located on the inner wall of the loading bag 602, and the other is located on the inner wall of the connecting belt 601, thus forming a complete annular structure. The bag opening is sealed by heating and fusion. Hot air is introduced into the connecting cover to assist heating, further improving the sealing firmness and providing a reliable fusion area for subsequent heat sealing. In addition, an operating area 604 for the loading bag 602 is reserved above the pre-reserved rubber ring 603. It is understood that this operating area 604 is not covered with adhesive, which is intended to facilitate the insertion of the opening restraint component and smoothly open the bag opening, thereby ensuring that the mud cake falls smoothly into the bag.

[0019] In actual operation, the packaging material belt 600 can switch between water filtration mode and baling mode. In water filtration mode, the feeding component 500 outputs the packaging material belt 600 horizontally. The packaging material belt 600 passes through the water discharge channel 303 and is filtered again by the belt dewatering machine 300 to achieve secondary purification of sludge water. In baling mode, the lifting component 700 clamps and lifts the end of the packaging material belt 600 to the output end of the belt dewatering machine 300. The cutting component 800 cuts the connecting belt 601 to obtain independent baling bags. The opening constraint component 405 extends into the operating area 604 and opens the top opening of the loading bag 602. The lower support component 403 lifts the baling bag, and the mud cake output by the belt dewatering machine 300 falls into the baling bag. After baling, the heat sealing component 406 heats the reserved rubber ring 603 to seal the opening of the loading bag 602, and the squeezing component 404 squeezes and straightens the baling bag.

[0020] Based on the above technical concept, the packaging material uses a continuous strip structure with connecting belts and spaced independent loading bags. The loading bags are designed with reserved operating areas and pre-reserved rubber rings, which not only meets the laying requirements during filtration but also facilitates bag opening and subsequent heat sealing, eliminating the need for separate processing of filter components and packaging bags. Simultaneously, the material strips within the same packaging material strip can sequentially complete the secondary filtration of sludge water and the bagging and sealing of the sludge cake, achieving switching between filtration and packaging modes. Combined with various components, this enables continuous feeding, continuous filtration, and continuous packaging, suitable for large-scale sludge treatment needs. Finally, the independent loading bags, after secondary filtration and humidification, have absorbed moisture on their surface, making the material more flexible and less brittle. They can adaptively deform according to compression and the shape of the sludge cake, compacting the sludge cake without causing bag damage or leakage due to compression stress.

[0021] In one embodiment of the present invention, the proposed mud cake baling machine 400 includes a side support frame 401, a sliding plate 402, a lower support component 403, a squeezing component 404, an opening constraint component 405, and a heat sealing component 406. Specifically, the side support frames 401 are symmetrically arranged at the output end of the support base 301, and vertically arranged sliding plates 402 are slidably installed between the two sets of side support frames 401. The lower support component 403 is installed at the bottom of the side support frame 401 to support the baling bag from the bottom during the bagging process, preventing the bag from tearing or shifting when the mud cake falls. The sliding plate 402 slides up and down along the side support frame 401 to adjust the working position according to the baling bag of different specifications.

[0022] Furthermore, the inner wall of the slide plate 402 is equipped with an opening constraint component 405, a heat sealing component 406, and a compression component 404 from top to bottom, which are used to open the bag opening, seal the bag opening, and compress and straighten the packaging bag, respectively, forming a continuous operation process from top to bottom.

[0023] To automate the lifting and positioning of the packaging material belt, ensuring that the loading bag can be accurately aligned with the discharge position of the mud cake.

[0024] In one embodiment of the present invention, the proposed lifting component 700 includes a lifting bracket 701, an intermediate mounting plate 702, a lifting guide seat 703, a clamping component 704, and an active guide rail 706. Specifically, the lifting bracket 701 is fixedly installed at the output end of the drainage channel 303, and an intermediate mounting plate 702 is fixedly installed inside it. The intermediate mounting plate 702 has a mounting groove 705 on its outer side, and an active guide rail 706 is fixedly installed inside the mounting groove 705. The lifting guide seat 703 is fixedly installed on the active guide rail 706. Thus, the lifting bracket, the intermediate mounting plate, the active guide rail, and the lifting guide seat together form a lifting and movable mechanism, realizing the stable lifting of the end of the packaging material belt.

[0025] Furthermore, a clamping component 704 is fixedly installed at the end of the lifting guide seat 703 for clamping and lifting the end of the packaging material belt 600 to the output end of the belt dewatering machine 300. Specifically, the clamping component 704 includes a clamping lifting block 741 and a clamping drive cylinder 742. The clamping lifting block 741 is installed at the end of the lifting guide seat 703 and has a through material strip inlet 743 for the end of the packaging material strip 600 to enter and be positioned. The clamping lifting block 741 also has an installation cavity 744 communicating with the material strip inlet 743. The clamping drive cylinder 742 is fixedly installed inside the installation cavity 744, and a clamping block 745 is fixedly installed at the output end of the clamping drive cylinder 742. During operation, when the end of the packaging material strip 600 enters the material strip inlet 743, the clamping drive cylinder 742 drives the clamping block 745 to extend, thereby achieving reliable clamping of the end of the packaging material strip and preventing loosening during the lifting process.

[0026] Understandably, the clamping component precisely clamps the end of the packaging tape through the tape inlet. Driven by the active guide rail, it lifts the packaging tape from the low-level filtration path to the mud cake output end of the belt dewatering machine, achieving a seamless switch from filtration mode to packaging mode. Utilizing the continuous structure of the packaging tape ensures reliable clamping and smooth lifting, while precisely aligning the tape end with the mud cake's falling position, thus positioning it for subsequent bagging. This solves the problems of cumbersome connection and inaccurate positioning in traditional filtration and packaging processes, achieving a seamless connection between filtration and packaging and improving operational continuity.

[0027] To achieve fixed-length cutting of continuous strip packaging materials to form individual packaging bags.

[0028] In one embodiment of the present invention, the proposed slitting assembly 800 includes a slitting guide frame 801, a slitting drive cylinder 802, a slitting blade, a plurality of guide rods, and an active traction roller group 805. Specifically, the slitting guide frame 801 is located above the water storage tank 304 and is fixedly installed on the outside of the lifting bracket 701 to provide working space and limit the slitting blade. The slitting drive cylinder 802 is fixedly installed on the top of the slitting guide frame 801, and the slitting drive cylinder 802 extends into the slitting guide frame 801. A slitting blade is fixedly installed at its output end to perform fixed-length slitting of the connecting belt.

[0029] Furthermore, a feeding guide rod is installed inside the slitting guide frame 801 on one side of the slitting blade to guide the packaging material strip entering the slitting guide frame. Transition guide rods 803 and 804 are installed inside the lifting bracket 701 to ensure straight conveying and reduce deviation and scratching. The transition guide rod 803 corresponds to the slitting guide frame 801, and the transition guide rod 804 is close to the top of the water storage tank 304. An active traction roller group 805 is fixedly installed inside the lifting bracket 701 between the slitting guide frame 801 and the transition guide rod 803. The active traction roller group 805 actively rolls and conveys the packaging material strip 600 to achieve continuous feeding and avoid slippage and jamming.

[0030] In one embodiment of the present invention, the proposed lower support component 403 includes a bracket 431, a support plate 432, and a flip-plate drive cylinder 433. Specifically, the bracket 431 is fixedly installed at the bottom of the side support frame 401, and the support plate 432 is movably hinged to the inner side of the bracket 431 so that the support plate can be smoothly flipped around the hinge point. The flip-plate drive cylinder 433 is movably installed on the inner side of the side support frame 401, and the output end of the flip-plate drive cylinder 433 is slidably hinged to both sides of the support plate 432 for driving the support plate 432 to flip up and down.

[0031] During operation, when the pallet flips upward to a horizontal position, it can lift and support the packing bag, stably receiving the falling mud cake and preventing the packaging bag from tearing due to impact. After the bagging and sealing are completed, the flipping plate drive cylinder drives the pallet to flip downward in the opposite direction, which can realize the unloading and lowering, thereby effectively improving the reliability of the bagging and unloading process.

[0032] In one embodiment of the present invention, the proposed extrusion member 404 includes an inner extruder 441 for inward operation and an outer extruder 442 for outward operation. Specifically, the outer extruder 442 is mounted on the slide plate 402, and the inner extruder 441 is mounted on the intermediate mounting plate 702. The two are arranged opposite to each other so as to apply extrusion force simultaneously from both sides of the packaging bag.

[0033] To achieve bidirectional uniform extrusion and shaping of the packaging bag, the inner extrusion component 441 includes an extrusion drive cylinder 443 and an extrusion plate 444. The extrusion drive cylinder 443 is mounted on the intermediate mounting plate 702, and the extrusion plate 444 is installed at its output end. The outer extrusion component 442 has the same structure as the inner extrusion component 441. During operation, the extrusion drive cylinders on both sides synchronously drive their respective extrusion plates to extend towards the packaging bag, extruding the bag body from both the inside and outside. This structure is simple and reliable, effectively compacting the mud cake inside the bag, flattening the bag body, and ensuring a regular shape for the packaging bag, thereby improving the convenience of subsequent transportation and stacking.

[0034] In one embodiment of the present invention, the feeding assembly 500 includes an unwinding bracket 501 and a feeding roller 502. Specifically, the unwinding bracket 501 is fixedly installed at the input end of the drainage channel 303, and a placement opening is provided on its outer side. The feeding roller 502 is hung through the placement opening, and the packaging material strip is wound on the feeding roller 502. The rotation of the feeding roller 502 achieves continuous and stable winding output.

[0035] Furthermore, a horizontal guide rod 503 is fixedly installed on the bottom inner side of the unwinding bracket 501 to guide the initial section of the packaging material strip 600, ensuring that the strip enters the drainage channel straight, reducing deviation and misalignment during the conveying process, thereby ensuring the smooth progress of subsequent water filtration and packaging operations.

[0036] In one embodiment of the present invention, such as Figure 2 , Figure 8As shown, the proposed guide plate 302 is inclined inward, with a limiting strip 305 fixedly installed at its bottom, and a limiting port 306 is provided on the inner side of the limiting strip 305. It can be understood that the inwardly inclined structure of the guide plate 302 is used to guide the dewatered water to concentrate in the central drainage channel 303, effectively reducing water overflow. The limiting strip 305 and the limiting port 306 on its inner side constrain and limit both sides of the packaging material belt 600, causing both sides of the packaging material belt 600 to extend into the limiting port 306 and output horizontally along a fixed path, ensuring that the packaging material belt always covers the falling area of ​​the dewatered water, thereby enabling sufficient secondary filtration and improving the solid-liquid separation effect.

[0037] To achieve stable opening and clamping positioning of the loading bag opening, in one embodiment of the present invention, such as... Figure 14 , Figure 15 As shown, the proposed opening constraint component 405 includes an upper fixing plate 451, a lower fixing plate 452, an opening support cylinder 453, a constraint tooth plate 454, and a rubber anti-slip pad 455.

[0038] In practice, an upper fixing plate 451 is fixedly installed on the top of the inner wall of the slide plate 402. Two sets of outwardly extending mouth-opening cylinders 453 are installed inside the upper fixing plate 451. A constraint tooth plate 454 is fixed to the output end of the mouth-opening cylinder 453. A lower fixing plate 452 is fixed to the bottom of the upper fixing plate 451. A rubber anti-slip pad 455 corresponding to the constraint tooth plate 454 is fixed to the side of the lower fixing plate 452. During operation, the mouth-opening cylinder drives the constraint tooth plate to extend into the operating area 604 of the loading bag. The rubber anti-slip pad clamps and opens the bag mouth, keeping it open to facilitate the mud cake falling in. The rubber anti-slip pad increases friction to prevent the bag mouth from slipping, ensuring stable and reliable bagging.

[0039] To achieve reliable heat sealing of the reserved adhesive ring, in one embodiment of the present invention, such as... Figure 14 , Figure 16 As shown, the proposed heat-sealing component 406 includes a docking cover 461, a heat-sealing pressing cylinder 462, and a heat-sealing plate 463. Specifically, the heat-sealing pressing cylinder 462 is fixedly installed inside the lower fixed plate 452, and its output end passes through the lower fixed plate 452 and extends into the docking cover 461 fixedly installed on the outside. The end of the output end is connected to the heat-sealing plate 463. The front of the docking cover 461 is provided with a pipe interface 464 for connecting an external hot air pipe, and the side away from the pipe interface 464 is provided with an exhaust port 465. During operation, the heat-sealing pressing cylinder 462 drives the heat-sealing plate 463 to press against the reserved rubber ring for heat sealing. The docking cover 461 forms a closed heat-sealing space. The pipe interface 464 is connected to hot air for auxiliary heating to improve the uniformity and firmness of the seal. The exhaust port 465 discharges waste gas and residual heat, improving the working environment and preventing the accumulation of hot air from affecting the equipment and operation.

[0040] In one embodiment of the present invention, a homogenizing component 101 extending into the bottom of the homogenizing tank 100 is fixedly installed. The homogenizing component 101 consists of a motor and a stirring blade. The motor is installed at the bottom of the homogenizing tank 100, and the stirring blade is installed inside the homogenizing tank 100. The output end of the motor drives the stirring blade to rotate. A filter grid plate is fixedly installed inside the homogenizing tank 100 above the stirring blade. The outlet of the homogenizing tank 100 is connected to the input end of the mesh belt filter 200. By driving the stirring blade to rotate, the sludge is stirred and homogenized, making the sludge texture uniform and improving the consistency of subsequent dewatering. The filter grid plate intercepts large particles of impurities, preventing impurities from entering the mesh belt filter and belt dewatering machine, reducing the risk of equipment blockage and damage. The outlet of the homogenizing tank is directly connected to the mesh belt filter, realizing continuous conveying of homogenized sludge and improving the overall processing continuity.

[0041] As understood in relation to the technical concept of this invention, the operating principle is as follows: S1. Homogenization and primary filtration River sludge is introduced into homogenizing tank 100, and homogenizing component 101 is activated to stir, homogenize, and break up clumps of sludge; filter grid plates intercept large particles of impurities. After homogenization, the sludge is sent to mesh belt filter 200, where the mesh belt slowly transports and uses gravity to separate the clear water, which is then collected through a guide structure.

[0042] S2, Secondary Dehydration and Cake Formation After dewatering, the sludge enters the belt dewatering machine 300, where the internal extrusion rollers extrude and dewater it to form a sludge cake. The sludge water separated by extrusion is guided by the inclined guide plate 302 to converge into the drainage channel 303, and the bottom of the drainage channel 303 is provided with a water storage tank 304. The limiting strip 305 and its limiting port 306 at the bottom of the guide plate 302 are used for limiting the conveying of the subsequent packaging material belt 600.

[0043] S3. Packaging material handling (switching between water filtration mode and packaging mode) S3.1 Filtration Mode: Continuous Feeding and Secondary Filtration The feeding roller 502 of the feeding assembly 500 outputs the packaging material belt 600, which is guided by the horizontal guide rod 503 and enters the water discharge channel 303 horizontally. The packaging material belt 600 is conveyed straight through the limiting ports 306 on both sides. The sludge water separated by the belt dewatering machine 300 drips onto the packaging material belt 600, where it undergoes secondary filtration using its own water-filtering properties, trapping fine sludge particles. The clean water falls into the water storage tank 304. After secondary filtration, the packaging material belt 600 is driven by the active traction roller group 805 and guided by the transition guide rod 803 and the discharge guide rod 804 to the lifting assembly 700.

[0044] S3.2 Packaging Mode: Automatic bagging, cutting, heat sealing and compression Lifting and positioning: The active guide rail 706 of the lifting component 700 drives the lifting guide seat 703 to move down, and the clamping drive cylinder 742 of the clamping component 704 drives the clamping block 745 to clamp the end of the packaging material belt 600, and then lifts it up to the mud cake output end of the belt dewatering machine 300.

[0045] Slitting: The slitting drive cylinder 802 of the slitting assembly 800 drives the slitting blade to slit at a fixed length at the connecting belt 601 between adjacent loading bags 602 to form independent packaging bags.

[0046] Opening the bag opening: The opening constraint component 405's opening cylinder 453 drives the constraint tooth plate 454 to extend into the operating area 604, cooperating with the rubber anti-slip pad 455 to clamp and open the top opening of the loading bag 602.

[0047] Mud cake loading: The flip-plate drive cylinder 433 of the lower support component 403 drives the support plate 432 to flip upward to support the bottom of the packing bag, and the mud cake falls into the bag.

[0048] Heat sealing edge sealing: The heat sealing component 406's heat sealing cylinder 462 drives the heat sealing plate 463 to heat the reserved rubber ring 603, thereby achieving bag mouth sealing; at the same time, the connecting cover 461 introduces hot air for assistance, and the exhaust port 465 discharges waste gas.

[0049] Extrusion and straightening: The inner extrusion member 441 and the outer extrusion member 442 of the extrusion component 404 operate synchronously, and the extrusion drive cylinder 443 drives the extrusion plate 444 to compact the mud cake in both directions, so that the shape of the packing bag is straight.

[0050] Unloading: The pallet 432 of the lower support component 403 flips downward to lower the finished product packaging bag to the conveying mechanism.

[0051] Complete the automated packaging of individual mud cakes.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-stage dewatering treatment device for river sludge, characterized in that, It includes a homogenizing tank (100), a mesh belt filter (200), a belt dewatering machine (300), and a mud cake packaging machine (400) arranged in sequence. The belt dewatering machine (300) is provided with a support base (301) at the bottom. Inside the support base (301), guide plates (302) are symmetrically installed. A water channel (303) is formed between the guide plates (302). A water storage tank (304) is provided at the bottom of the water channel (303) to collect the sludge water after secondary filtration. The mud cake packaging machine (400) includes a side support frame (401), a slide plate (402), a lower support component (403), a squeezing component (404), an opening constraint component (405), and a heat sealing component (406). The side support frame (401) is symmetrically arranged at the output end of the support base (301). The slide plate (402) is slidably installed between the two sets of side support frames (401). The opening constraint component (405), the heat sealing component (406), and the squeezing component (404) are installed sequentially from top to bottom on the inner wall of the slide plate (402). The lower support component (403) is installed at the bottom of the side support frame (401) for supporting or releasing the packaging bag. The inlet of the drainage channel (303) is equipped with a material feeding assembly (500) for horizontally outputting the packaging material belt (600). The packaging material belt (600) includes a connecting belt (601) and a loading bag (602). Multiple independent loading bags (602) are spaced apart on the surface of the connecting belt (601). The opening of the loading bag (602) is provided with a reserved rubber ring (603) for subsequent heat sealing. The output end of the water discharge channel (303) is equipped with a lifting component (700) to lift the end of the packaging material belt (600) to the output end of the belt dewatering machine (300) to realize the switching from water filtration mode to packaging mode.

2. The multi-stage dewatering treatment equipment for river sludge according to claim 1, characterized in that: The lifting assembly (700) includes a lifting bracket (701), an intermediate mounting plate (702), a lifting guide seat (703), and a clamping component (704). The lifting bracket (701) is fixedly installed at the output end of the drain channel (303), and an intermediate mounting plate (702) is fixedly installed inside it. An active guide rail (706) is installed on the intermediate mounting plate (702), and a lifting guide seat (703) is fixedly installed on the active guide rail (706). A clamping component (704) is fixedly installed at the end of the lifting guide seat (703) to move and lift the packaging material belt in the vertical direction. The clamping component (704) includes a clamping lifting block (741) and a clamping drive cylinder (742). The clamping lifting block (741) is installed at the end of the lifting guide seat (703) and has a material belt inlet (743) on it. The clamping lifting block (741) is equipped with a clamping drive cylinder (742) inside. A clamping block (745) is installed at the output end of the clamping drive cylinder (742) for clamping the end of the packaging material belt (600) entering the material belt inlet (743).

3. The multi-stage dewatering treatment equipment for river sludge according to claim 1 or 2, characterized in that: The lifting assembly (700) is equipped with a slitting assembly (800) at its bottom end, which is used to slit the connecting strip (601) to form an independent packaging bag. The slitting assembly (800) includes a slitting guide frame (801), a slitting drive cylinder (802), a slitting knife, and an active traction roller group (805). The slitting guide frame (801) is fixedly installed on the outside of the lifting bracket (701), and the slitting drive cylinder (802) is installed on its top. The slitting drive cylinder (802) extends into the slitting guide frame (801), and the slitting knife is installed at its output end. The active traction roller group (805) is installed in the lifting bracket (701) and is used to actively convey the packaging material strip (600).

4. The multi-stage dewatering treatment equipment for river sludge according to claim 1, characterized in that: The lower support component (403) includes a bracket (431), a support plate (432), and a flip-plate drive cylinder (433). The bracket (431) is fixedly installed on the bottom of the side support frame (401), and the support plate (432) is hinged to its inner side. The flip-plate drive cylinder (433) is installed on the inner side of the side support frame (401), and its output end is connected to the support plate (432) to drive the support plate (432) to flip up and down.

5. The multi-stage dewatering treatment equipment for river sludge according to claim 1, characterized in that: The extrusion component (404) includes an inner extruder (441) and an outer extruder (442) with the same structure. The outer extruder (442) is installed on the slide plate (402), and the inner extruder (441) is installed on the middle mounting plate (702) for simultaneously extruding the packaging bag from both sides.

6. The multi-stage dewatering treatment equipment for river sludge according to claim 1, characterized in that: The inlet end of the drainage channel (303) is equipped with a feeding assembly (500). The feeding assembly (500) includes an unwinding bracket (501) and a feeding roller (502). The unwinding bracket (501) is installed at the inlet end of the drainage channel (303), and the feeding roller (502) is hung on it. The packaging material strip (600) is wound on the feeding roller (502) and output from there. A horizontal guide rod (503) is installed at the bottom inside the unwinding bracket (501) to guide the packaging material strip (600) straight into the drainage channel.

7. The multi-stage dewatering treatment equipment for river sludge according to claim 1, characterized in that: The guide plate (302) is inclined inward, and a limiting strip (305) is installed at its bottom. A limiting port (306) is provided on the inner side of the limiting strip (305). The two sides of the packaging material strip (600) extend into the limiting port (306) and are output in the horizontal direction.

8. The multi-stage dewatering treatment equipment for river sludge according to claim 1, characterized in that: The opening constraint component (405) includes an upper fixed plate (451), a lower fixed plate (452), a mouth-supporting cylinder (453), a constraint toothed plate (454), and a rubber anti-slip pad (455). The upper fixed plate (451) is fixedly installed on the top of the inner wall of the slide plate (402). The mouth-supporting cylinder (453) is installed inside the upper fixed plate (452). The constraint toothed plate (454) is installed at the output end of the mouth-supporting cylinder (453). The lower fixed plate (452) is fixedly installed at the bottom of the upper fixed plate (451). The rubber anti-slip pad (455) is fixedly connected to the side of the lower fixed plate (452). The constraint toothed plate (454) is used to extend into the reserved operating area (604) above the reserved rubber ring (603) and cooperate with the rubber anti-slip pad (455) to clamp and open the opening of the loading bag (602).

9. The multi-stage dewatering treatment equipment for river sludge according to claim 1, characterized in that: The heat sealing component (406) includes a docking cover (461), a heat sealing and pressing cylinder (462), and a heat sealing plate (463). The heat sealing and pressing cylinder (462) is fixedly installed on the inner side of the lower fixed plate (452). Its output end passes through the lower fixed plate (452) and extends into the docking cover (461) fixedly installed on the outer side. The end of the output end is connected to the heat sealing plate (463). The front of the docking cover (461) is provided with a pipe interface (464) for an external hot air pipe, and an exhaust port (465) is provided on the side away from the pipe interface (464).

10. The multi-stage dewatering treatment equipment for river sludge according to claim 1, characterized in that: The homogenizing tank (100) is equipped with a homogenizing component (101) at the bottom. The homogenizing component (101) includes a motor and a stirring blade. The motor is installed at the bottom of the homogenizing tank (100), and the stirring blade is installed inside the homogenizing tank (100). A filter grid plate is installed inside the homogenizing tank (100) above the stirring blade. The outlet of the homogenizing tank (100) is connected to the input end of the mesh belt water filter (200).

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