Full-automatic cloth clamping sludge paving machine
By combining the rolling sludge guiding mechanism and the flat-laying pressing mechanism, the problem of sludge adhesion on the filter cloth surface is solved, achieving uniform sludge spreading and effective cleaning of the filter cloth, improving dewatering efficiency and filter cloth service life, and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-06
- Publication Date
- 2026-04-03
AI Technical Summary
In existing technologies, sludge tends to adhere to the surface of the filter cloth during the spreading process, especially in the edge areas, which leads to clogging of the filter cloth pores, reduced dewatering efficiency, and frequent cleaning damages the filter cloth, increasing maintenance costs.
The system employs a rolling sludge guiding mechanism that includes irregularly shaped scrapers and contoured heated scrapers, combined with a flat-laying and pressing mechanism and spray rinsing, to achieve dynamic cleaning and anti-adhesion of the filter cloth surface, ensuring uniform sludge spreading and filter cloth permeability.
It significantly improves dewatering efficiency, extends filter cloth lifespan, reduces maintenance costs, enables continuous automated sludge leveling, and enhances the continuity and stability of the production line.
Smart Images
Figure CN121778960A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of sludge treatment technology, and specifically discloses a fully automatic cloth-inserted sludge leveling machine. Background Technology
[0002] With the rapid urbanization and increasingly stringent environmental protection requirements in my country, the amount of sludge generated by municipal sewage treatment plants and various industrial wastewater treatment facilities has increased dramatically. Sludge is a byproduct of water treatment processes, and its composition is complex, typically containing large amounts of water, colloids, organic matter, and microbial communities. It is characterized by high water content, high viscosity, and strong thixotropy. In mechanical dewatering processes, this highly viscous sludge easily adheres to various contact surfaces, especially the filter cloth, which serves as the core filtration medium.
[0003] In actual production, sludge is fed onto continuously running filter cloth via conveying equipment. Due to the inherently high adhesive properties of sludge, during the spreading process, it not only accumulates in the pre-designed flat area but also adheres in large quantities and unevenly to the surface of the filter cloth, especially at the edges along the running direction. This adhesion is not simple but forms a difficult-to-remove adhesive layer, causing rapid blockage of the effective filtration pores of the filter cloth and a sharp decrease in permeability. The direct consequence is a significant reduction in dewatering efficiency and an increase in the moisture content of the dewatered cake. More seriously, the adhering sludge accumulates and hardens at the edges of the filter cloth, altering the local tension and running trajectory of the filter cloth, indirectly inducing problems such as filter cloth misalignment and accelerated wear. To restore equipment performance, frequent high-intensity manual or chemical cleaning is necessary, but this damages the filter cloth fibers, leading to a decrease in mechanical strength, a significant reduction in service life, and an increase in replacement frequency. This not only directly increases operating and maintenance costs but also affects the continuity and stability of the dewatering production line.
[0004] Current technologies for sludge conveying and spreading mainly focus on solving the problem of fabric uniformity. However, there is a lack of effective and targeted solutions to prevent harmful adhesion of highly viscous sludge to the filter cloth surface (especially critical edge areas) during the spreading process. Conventional scraper or vibratory spreading methods often exacerbate sludge compaction and adhesion during contact.
[0005] Therefore, there is an urgent need to develop a dedicated automated device that can efficiently connect with dewatering equipment, actively intervene during the sludge transport and initial laying stages, effectively prevent sludge from adhering to the filter cloth surface, and especially ensure the cleanliness and flatness of the edge areas. Summary of the Invention
[0006] The purpose of this invention is to solve the problems existing in the background art, and to propose a fully automatic sludge spreading machine with filter cloth, including a support frame, a sludge spreading and feeding hopper, a mounting frame, a spreading feeder, a screw conveyor, and a filter cloth conveyor. The sludge spreading and feeding hopper is located above the support frame, and the screw conveyor is installed inside the lower part of the sludge spreading and feeding hopper for conveying sludge. An mounting frame is provided on the outside of the sludge spreading and feeding hopper, and the spreading feeder is fixedly installed inside the mounting frame. The mounting frame is located below one side of the sludge spreading and feeding hopper, and the filter cloth conveyor is located inside the mounting frame. Multiple sets of spreading and pressing mechanisms are provided inside the mounting frame and above the end near the filter cloth conveyor. A box is provided inside the mounting frame and below the filter cloth conveyor, and a scraping mechanism is provided inside the box.
[0007] In the above technical solution, further, the multiple sets of flat pressing mechanisms include mounting seats symmetrically arranged on both sides of the upper surface of the mounting frame. Each of the two mounting seats is equipped with a first cylinder, and the extension and retraction ends of the two first cylinders are jointly mounted with pressing rollers through a fixed connecting rod.
[0008] In the above technical solution, the scraping mechanism further includes an installation shell that is installed at an angle inside the box and near the top. A support plate is fixedly installed on the upper surface of the installation shell and near the middle. The support plate corresponds to the center of the filter cloth conveying machine below the filter cloth conveyor. Rolling mud guiding mechanisms are provided on both sides of the outer wall of the support plate.
[0009] In the above technical solution, the rolling mud guiding mechanism further includes a U-shaped frame fixedly installed on one side of the outer wall of the support plate. A fixed ring rod is rotatably arranged inside the U-shaped frame. The lower end of the fixed ring rod extends to the lower part of the mounting shell. A limit member is provided at the lower end of the fixed ring rod. A motor is fixedly installed inside the upper part of the fixed ring rod. A roller is fixedly installed on the output shaft of the motor. A rectangular channel is opened inside the roller. Wear-resistant plates with a corresponding curvature to the outer surface of the roller are installed on both sides of the outer surface of the roller and near the rectangular channel. Inclined irregular scrapers are fixedly installed on the outer surface of the wear-resistant plates. The irregular scrapers are in contact with the outer surface of the conveying filter cloth.
[0010] In the above technical solution, the limiting component further includes a rotating shell rotatably installed on the lower part of the fixed ring rod. The outer surface of the rotating shell is provided with limiting shells at equal intervals along the circumferential direction. An L-shaped rod is fixedly installed on one side of the fixed ring rod, and a limiting slide cylinder is slidably sleeved on the lower part of the L-shaped rod.
[0011] In the above technical solution, a fixing plate is fixedly installed on one side of the outer wall of the mounting shell, a second cylinder is fixedly installed on the outside of the fixing plate, a slide rod is fixedly installed on the telescopic end of the second cylinder, a fixing shell is sleeved on the upper part of the slide rod, the inside of the fixing shell is fixedly connected to the upper part of the slide rod by a fixed bolt, both ends of the bolt are threaded with nuts, and the two nuts abut against the outer surfaces of both sides of the fixing shell, a sliding shell is slidably installed on the upper part of the fixing shell, and a contour heating scraper is fixedly installed on one side of the outer side of the sliding shell.
[0012] In the above technical solution, furthermore, a suspension seat is fixedly installed on the lower surface of both sides of the mounting bracket and near the top. A third cylinder is fixedly installed on the lower surface of both suspension seats. Guide rods are fixedly installed on the telescopic ends of the two third cylinders. An adjusting roller is rotatably installed inside the two guide rods. The outer edge of one side of the contour heating scraper is set to correspond to the outer arc of the adjusting roller.
[0013] In the above technical solution, a material guiding conveyor is further provided inside the box and near the bottom of the filter cloth conveyor. A receiving pipe is connected to the inside of the box and near the side of the filter cloth conveyor. One end of the receiving pipe is connected to a spray pipe. Nozzles are installed at equal intervals along the horizontal direction on both sides inside the spray pipe. The spray direction of the nozzles is close to the bottom of the conveyed filter cloth. Tensioning rollers are rotatably installed inside the filter cloth conveyor and near the corresponding pressure rollers. Both ends of multiple tensioning rollers are connected to the lower surface of the mounting frame through a set bearing seat. Multiple tensioning rollers are all located in the middle of the conveyed filter cloth and are used to cooperate with the pressure rollers to compress and flatten the sludge on the conveyed filter cloth. A drain pipe is connected to the bottom of the inside of the box. A pump body is connected to the end of the receiving pipe away from the spray pipe. An external water pipe is connected to the end of the pump body away from the receiving pipe. The pump body is located on the outside side of the box.
[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention, by incorporating a rolling sludge guiding mechanism with irregularly shaped scrapers and a contour-following heated scraper, enables dynamic and flexible contact cleaning of the filter cloth surface during operation. The irregularly shaped scrapers can promptly remove initially adhered sludge, while the heated scraper softens and removes stubborn adhered layers. Combined with the rinsing effect of spraying, this effectively prevents and removes sludge adhesion from the filter cloth surface (especially the edge areas) at the source, ensuring the permeability of the filter cloth pores and thus significantly improving subsequent dewatering efficiency and sludge cake quality. The scraped sludge can be discharged outside the housing.
[0015] 2. This invention utilizes an adjustable pressure roller in the flattening and pressing mechanism, in conjunction with a tension roller beneath the filter cloth, to controllably compress and initially level the spread sludge. Simultaneously, the coordinated operation of the screw conveyor and the flattening feeder ensures the uniformity and controllability of sludge feeding. This mechanical synergy effectively confines and spreads the sludge evenly within the effective width of the filter cloth, preventing abnormal accumulation or excessively thin spreading of sludge at the edges, thus laying the foundation for uniform dewatering.
[0016] 3. The scraping, cleaning, and adjusting mechanisms of this invention are all driven by cylinders, motors, etc., and can be automated through a control system. For example, the pressure of the pressure roller, the position of the heating scraper, and the height of the adjusting roller can all be automatically adjusted to adapt to different sludge properties and processing requirements. The entire structure can realize continuous automated operation from sludge receiving, leveling, anti-sticking cleaning to waste collection, greatly reducing manual intervention and improving the continuity and stability of the dewatering production line.
[0017] 4. This invention effectively solves the core problem of sludge adhesion to the filter cloth, directly reducing the frequency of high-intensity cleaning or chemical cleaning required due to filter cloth clogging and contamination, thereby reducing damage to the filter cloth fibers. Simultaneously, uniform flattening and pressure distribution prevent excessive stress or misalignment of the filter cloth, extending its service life in multiple ways, reducing equipment maintenance costs and spare parts consumption, resulting in significant economic benefits. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention from another angle; Figure 3 This is a schematic diagram of the connection structure of the inner side of the box of the present invention; Figure 4 This is a schematic diagram of the connection structure between the filter cloth conveyor and the adjustment mechanism of the present invention; Figure 5 This is another schematic diagram of the connection structure between the filter cloth conveyor and the adjustment mechanism of the present invention; Figure 6 This is a schematic diagram of the connection structure between the mounting shell and the scraping mechanism of the present invention; Figure 7 This is a schematic diagram of the overall structure of the drum of the present invention; Figure 8 This is a schematic diagram of the connection structure between the support plate and the U-shaped frame of the present invention; Figure 9 This is a schematic diagram of the connection structure between the fixing ring rod and the limiting member of the present invention; Figure 10 This is a schematic diagram showing the structural breakdown of the fixing ring rod and the limiting component of the present invention.
[0019] In the diagram: 1. Support frame; 2. Sludge spreading and feeding hopper; 3. Mounting frame; 4. Housing; 5. Material guide conveyor; 6. First cylinder; 7. Mounting base; 8. Tensioning roller; 9. Sludge spreading and feeding device; 10. Screw conveyor; 11. Mounting frame; 12. External water pipe; 13. Pressure roller; 14. Filter cloth conveyor; 15. Drain pipe; 16. Pump body; 17. Incoming pipe; 18. Limiting slide; 19. Adjusting roller; 20. Mounting shell; 21. Suspension seat; 22. Nozzle; 23. Spray pipe; 24. Guide rod; 25. Second cylinder; 26. Fixing ring rod; 27. Third cylinder; 28. Limiting shell; 29. Sliding shell; 30. Bolt; 31. Motor; 32. U-shaped frame; 33. Contour heating scraper; 34. Fixing shell; 35. Sliding rod; 36. Roller; 37. Wear-resistant sheet; 38. Support plate; 39. Irregularly shaped scraper; 40. L-shaped rod; 41. Rotating shell. Detailed Implementation
[0020] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0021] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.
[0022] like Figures 1-10 The fully automatic sludge spreading machine shown includes a support frame 1, a sludge spreading hopper 2, a mounting frame 3, a spreading feeder 9, a screw conveyor 10, and a filter cloth conveyor 14. The sludge spreading hopper 2 is located above the support frame 1. The screw conveyor 10 is installed inside the lower part of the sludge spreading hopper 2 for conveying sludge. An mounting frame 11 is provided on the outside of the sludge spreading hopper 2. The spreading feeder 9 is fixedly installed inside the mounting frame 11. The mounting frame 3 is located below one side of the sludge spreading hopper 2, and the filter cloth conveyor 14 is located inside the mounting frame 3. Multiple sets of spreading and pressing mechanisms are provided inside the mounting frame 3 and above one end near the filter cloth conveyor 14. A box 4 is provided inside the mounting frame 3 and below the filter cloth conveyor 14. A scraping mechanism is provided inside the box 4. In this embodiment, the main body of the equipment consists of a support frame 1 and a mounting frame 3. A sludge spreading hopper 2 is mounted on the support frame 1, and its internal screw conveyor 10 pushes the sludge to the spreading feeder 9. Below the spreading feeder 9 is a filter cloth conveyor 14 within the mounting frame 3, used to carry and transport the filter cloth. Above the feed end of the filter cloth conveyor 14, multiple sets of spreading and pressing mechanisms are provided to level and compact the sludge spread on the filter cloth. Below the carrying section of the filter cloth conveyor 14, a housing 4 is provided, inside which a scraping mechanism is installed for contact cleaning of the lower surface of the filter cloth. Specifically, the sludge is conveyed by the screw conveyor 10 and initially spread onto the continuously operating filter cloth by the leveling feeder 9. Subsequently, the leveling and pressing mechanism mechanically spreads and pre-compresses the wet sludge, forming a uniform material layer on the filter cloth. At the same time, the scraping mechanism located below the filter cloth starts working, actively scraping off any sludge that may adhere to the filter cloth, maintaining the filter cloth's permeability. The entire process achieves continuous automated operation from material spreading and leveling to cleaning. It should be noted that the flat-lay feeder 9 includes a distribution bin, adjustable baffles, and a vibrating motor. The top of the distribution bin is connected to the discharge port of the sludge flat-lay feed hopper 2. Multiple sets of parallel distribution baffles are installed inside the distribution bin to divide the sludge into multiple streams. An adjustable baffle is installed at the discharge port at the bottom of the distribution bin. A vibrating motor is installed on the outer wall of the distribution bin to prevent sludge from clogging inside and ensure continuous feeding. The flat-lay feeder 9 is existing technology and will not be described in detail.
[0023] The multiple sets of flat-laying and pressing mechanisms include mounting seats 7 symmetrically arranged on both sides of the upper surface of the mounting frame 3. Each mounting seat 7 is equipped with a first cylinder 6. The extension and retraction ends of the two first cylinders 6 are connected to the pressing rollers 13 through fixed connecting rods. Tensioning rollers 8 are rotatably installed inside the filter cloth conveyor 14 and near the corresponding pressing rollers 13. The two ends of the multiple tensioning rollers 8 are connected to the lower surface of the mounting frame 3 through the bearing seats. The multiple tensioning rollers 8 are all located in the middle of the conveyed filter cloth and are used to cooperate with the pressing rollers 13 to compress the sludge on the flat-laying and conveyed filter cloth. In this embodiment, the pressure applied by the pressure roller 13 to the conveying filter cloth and sludge by the symmetrically arranged cylinders on both sides can be ensured to be uniform and controllable, thereby effectively preventing the sludge from shifting to one side or the conveying filter cloth from running off-center due to uneven pressure on one side, and achieving a more precise flatness effect. The tension roller 8 and the pressure roller 13 are vertically aligned and work together to squeeze the sludge during the flattening stage. Throughout the process, it also helps to maintain the tension and stability of the filter cloth in the clean area. Specifically, when the filter cloth carrying sludge passes under the pressure roller 13, the first cylinder 6 pushes the pressure roller 13 down, cooperating with the tension roller 8 in the filter cloth conveyor 14 to roll the sludge layer in the middle. The synchronous action of the first cylinders 6 on both sides ensures that the pressure is evenly distributed along the axial direction of the roller body, thereby confining the sludge flatly within the effective width of the filter cloth.
[0024] The scraping mechanism includes a mounting shell 20 that is installed at an angle inside the housing 4 and near the top. A support plate 38 is fixedly installed on the upper surface of the mounting shell 20 and near the middle. The support plate 38 corresponds to the center of the filter cloth conveying machine 14. Rolling mud guiding mechanisms are provided on both sides of the outer wall of the support plate 38. In this embodiment, the design of the support plate 38 enables the symmetrically arranged rolling mud guiding mechanism on both sides to cover from the central area of the conveying filter cloth to both sides, while the symmetrically arranged rolling mud guiding mechanism on both sides can simultaneously carry out key cleaning of the two edge areas on both sides of the filter cloth running direction and the heavily affected areas of sludge adhesion. Specifically, the support plate 38 provides a stable mounting base for the rolling sludge guiding mechanism. Two sets of rolling sludge guiding mechanisms are positioned below, corresponding to the two side edges of the conveyed filter cloth. When the filter cloth is being conveyed, the rolling sludge guiding mechanisms on both sides operate simultaneously, using rotation to remove the adhering sludge from the surface of the filter cloth on their respective sides.
[0025] The rolling mud guiding mechanism includes a U-shaped frame 32 fixedly installed on one side of the outer wall of the support plate 38. A fixed ring rod 26 is rotatably installed inside the U-shaped frame 32. The lower end of the fixed ring rod 26 extends to the lower part of the mounting shell 20. A limit member is provided at the lower end of the fixed ring rod 26. A motor 31 is fixedly installed inside the upper part of the fixed ring rod 26. A roller 36 is fixedly installed on the output shaft of the motor 31. A rectangular channel is opened inside the roller 36. Wear-resistant plates 37 with corresponding curvature to the outer surface of the roller 36 are installed on both sides of the outer surface of the roller 36 and near the rectangular channel. Inclined irregular scrapers 39 are fixedly installed on the outer surface of the wear-resistant plates 37. The irregular scrapers 39 are in contact with the outer surface of the conveying filter cloth. In this embodiment, the roller 36 driven by the motor 31 rotates the irregularly shaped scraper 39, changing the contact between the irregularly shaped scraper 39 and the conveying filter cloth from static sliding friction to dynamic, intermittent contact, thus reducing wear on the scraper itself and damage to the filter cloth. The inclined design of the irregularly shaped scraper 39 facilitates guiding the scraped sludge to both sides for discharge. Specifically, motor 31 starts, driving drum 36 and the irregularly shaped scraper 39 mounted on it to rotate. The rotating irregularly shaped scraper 39 continuously cleans the surface of the conveying filter cloth by scraping. The scraped sludge is thrown away by centrifugal force and the guidance of the inclined scraper.
[0026] The limiting component includes a rotating shell 41 rotatably mounted on the outside of the fixed ring rod 26. Limiting shells 28 are provided at equal intervals along the circumferential direction on the outer surface of the rotating shell 41. An L-shaped rod 40 is fixedly mounted on one side of the fixed ring rod 26. A limiting slide cylinder 18 is slidably sleeved on the outside of the L-shaped rod 40. In this embodiment, a sliding limiting cylinder 18 is sleeved at the lower end of the L-shaped rod 40. By selectively inserting the lower end of the limiting cylinder 18 into different limiting shells 28, the rotation angle of the fixing ring rod 26 can be limited. Specifically, under normal operating conditions, the fixing ring rod 26 can adapt to the conveying of the filter cloth within a certain angle. When the width of the conveyed filter cloth changes, the limiting slide cylinder 18 is slid upwards, disengaging from a certain limiting shell 28, allowing the fixing ring rod 26 to rotate. Similarly, when locking the fixing ring rod 26, the limiting slide cylinder 18 is pushed down and engaged with a certain limiting shell 28 to fix its angle. The sliding of the limiting slide cylinder 18 on the L-shaped rod 40 provides height adjustment to accommodate different locking positions.
[0027] A fixing plate is fixedly installed on one side of the outer wall of the mounting shell 20. A second cylinder 25 is fixedly installed on the outside of the fixing plate. A slide rod 35 is fixedly installed on the telescopic end of the second cylinder 25. A fixing shell 34 is sleeved on the upper part of the slide rod 35. The inside of the fixing shell 34 is fixedly connected to the upper part of the slide rod 35 by a fixed bolt 30. Both ends of the bolt 30 are threaded with nuts, and the two nuts abut against the outer surfaces of both sides of the fixing shell 34. A slide shell 29 is slidably installed on the upper part of the fixing shell 34. A contour heating scraper 33 is fixedly installed on one side of the slide shell 29. In this embodiment, the contour heating scraper 33 assembly functions to remove stubbornly adhered sludge. For heavily adhered layers that are difficult to remove, the contour heating scraper 33 softens the sludge through electric heating. Specifically, the contour heating scraper 33 is equipped with an electric heating element (such as a resistance wire or PTC heating element), powered by an external power source. During operation, the scraper body and cutting edge area are heated to a preset temperature. After heating, the moisture in the highly viscous, high-moisture sludge adhering to the filter cloth surface evaporates, the colloidal structure softens, and the viscosity is significantly reduced, thereby weakening the adhesion between the sludge and the filter cloth fibers. In the heated state, the contour heating scraper 33 mechanically scrapes the softened sludge layer with its precisely contoured cutting edge, achieving deep cleaning of stubborn adhered substances. The second cylinder 25 drives the contour heating scraper 33 to perform a transverse reciprocating linear motion, achieving deep cleaning by heating and softening the stubborn sludge blocks on the surface of the conveyed filter cloth, scraping them off, and then scraping them with its precisely contoured cutting edge. The second cylinder 25 drives the contour heating scraper 33 to perform reciprocating linear motion, thereby scraping off stubborn sludge blocks on the surface of the conveying filter cloth. Specifically, the second cylinder 25 pushes the entire scraper assembly laterally, causing it to scrape against the outer surface of the conveying filter cloth. The contour-following heated scraper 33 is heated by electricity, softening the stubborn sludge in its contact area. The height of the contour-following heated scraper 33 can be finely adjusted by adjusting the fixing position of the adjusting bolt 30 on the slide rod 35. It should be noted that the contour-following heated scraper 33 is equipped with an electric heating element inside, which can be heated from the inside by connecting to an external power source through an external connecting wire.
[0028] Hanging seats 21 are fixedly installed on both sides of the lower surface and near the top of the mounting bracket 3. Third cylinders 27 are fixedly installed on the lower surface of both hanging seats 21. Guide rods 24 are fixedly installed at the telescopic ends of the two third cylinders 27. Adjusting rollers 19 are installed inside the two guide rods 24 and rotate together. The outer edge of one side of the contour heating scraper 33 is set to correspond to the outer arc of the adjusting roller 19. In this embodiment, by adjusting the lifting and lowering of the roller 19, the curvature and tension of the local conveying filter cloth can be actively changed, so that it forms a raised arc surface that is more conducive to scraping when passing through the conformal heating scraper 33, while tightening the conveying filter cloth, thereby improving scraping efficiency and cleanliness. Specifically, the third cylinder 27 actuates to raise or lower the adjusting roller 19. When the adjusting roller 19 presses down, it presses the conveyed filter cloth down from the middle. At this time, the cutting edge of the contour heating scraper 33 fits precisely against this arc surface, efficiently scraping the taut conveyed filter cloth.
[0029] Inside the housing 4 and near the bottom of the filter cloth conveyor 14, a material guide conveyor 5 is installed. Inside the housing 4 and near the side of the filter cloth conveyor 14, a receiving pipe 17 is connected and installed. One end of the receiving pipe 17 is connected to a spray pipe 23. Inside the spray pipe 23, nozzles 22 are installed at equal distances along the horizontal direction on both sides. The spray direction of the nozzles 22 is close to the bottom of the conveyed filter cloth. Inside the housing 4, a drain pipe 15 is connected and installed at the bottom. The end of the receiving pipe 17 away from the spray pipe 23 is connected and installed with a pump body 16. The end of the pump body 16 away from the receiving pipe 17 is connected and installed with an external water pipe 12. The pump body 16 is located on the outside side of the housing 4. In this embodiment, the material conveyor 5 is responsible for collecting the scraped sludge; the spray pipe 23 and multiple sets of nozzles 22 use water flow to rinse the scraped conveyor filter cloth, remove residual particles, and cool the filter cloth area that may be heated due to the heated scraper, ensuring thorough cleaning without damaging the conveyor filter cloth. Specifically, scraped sludge falls into the housing 4 and is transported out by the conveyor 5. The pump 16 pumps water from the external water pipe 12, which is then sprayed evenly onto the lower surface of the conveying filter cloth through the nozzle 22 for rinsing and cooling. The rinsing wastewater falls into the housing 4 and is discharged from the drain pipe 15.
[0030] Working principle: The sludge is first conveyed to the sludge spreading hopper 2 located above the support frame 1. The screw conveyor 10 installed inside the lower part of the sludge spreading hopper 2 is activated to convey the sludge evenly and controllably towards the outlet. The sludge then falls into the spreading feeder 9 fixed inside the mounting frame 11, which is responsible for initially spreading the sludge onto the conveying filter cloth of the continuously running filter cloth conveyor 14 below it; The filter cloth conveyor 14 carries the initial sludge material on the conveyed filter cloth. To spread the sludge evenly and control it within an effective width, this invention employs multiple sets of flattening and pressing mechanisms. The first cylinder 6, symmetrically mounted on both sides of the mounting frame 3 within the mounting base 7, actuates, driving its telescopic end to press down on the pressing roller 13 via the connecting rod. The pressing roller 13 cooperates with the tension roller 8 at the corresponding position inside the filter cloth conveyor 14, applying controllable pressure to the filter cloth covered with sludge. This process not only compresses and flattens the sludge but also, through the synergistic action of multiple sets of rollers, effectively constrains the sludge to be evenly distributed in the central area of the filter cloth, preventing it from accumulating at the edges. During and after flattening and compaction, to prevent highly viscous sludge from adhering to the filter cloth surface, especially the edges, this invention activates the scraping mechanism inside the housing 4. The rolling sludge guiding mechanism located on both sides of the support plate 38 begins operation. The motor 31 starts, driving the roller 36 on the output shaft to rotate. The irregularly shaped scraper 39, fixed to the wear-resistant plate 37 on the outer surface of the roller 36, rotates accordingly. Since the roller 36 is angle-adjustable, the two sets of rollers 36 are positioned on either side of the support plate 38, thus covering the wide surface of the conveying filter cloth. They laterally span the outer surface of the conveying filter cloth at an angle, maintaining contact with the lower surface of the moving conveying filter cloth during rotation. The rotating irregularly shaped scraper 39 effectively peels off or removes sludge clumps that are initially adhered to or about to fall off the filter cloth surface through dynamic scraping. The irregularly shaped scraper 39 is arranged in inclined segments, effectively and thoroughly scraping away sludge. For more stubborn adhesion layers, the contour heating scraper 33 plays a crucial role. The second cylinder 25 adjusts the lateral position of the contour heating scraper 33 via the slide rod 35 and the fixed housing 34, ensuring that its cutting edge, in conjunction with the adjusting roller 19, is at the lower end of the conveying filter cloth, maintaining optimal contact with the conveying filter cloth. The contour-following heated scraper 33 activates its heating function to soften stubborn sludge. Combined with its precise blade shape, it achieves fine scraping of the filter cloth surface, especially the area corresponding to the curvature of the adjusting roller 19. The adjusting roller 19 is height-controlled by the third cylinder 27 via the guide rod 24, thereby changing the curvature and tension of the filter cloth above it, creating optimal contact conditions for the heated scraper. The scraped sludge falls into the lower housing 4 and is then collected and discharged by the conveyor 5. To further maintain the cleanliness of the conveyed filter cloth, a spraying operation is initiated. The pump 16 pumps the rinsing water supplied by the external water pipe 12 through the delivery pipe 17 to the spray pipe 23, where multiple nozzles 22 spray the water onto the lower surface of the filter cloth for a final rinse, removing residual fine particles. The rinsing wastewater is collected in the housing 4 and discharged through the drain pipe 15, ensuring the long-term use of the conveyed filter cloth.
[0031] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.
Claims
1. A fully automatic sludge cloth spreading machine, comprising a support frame (1), a sludge spreading hopper (2), a mounting frame (3), a spreading feeder (9), a screw conveyor (10), and a filter cloth conveyor (14), characterized in that: The sludge spreading hopper (2) is located above the support frame (1). The screw conveyor (10) is installed inside the sludge spreading hopper (2) and below it for conveying sludge. An installation frame (11) is provided on the outside of the sludge spreading hopper (2). The spreading feeder (9) is fixedly installed inside the installation frame (11). The installation frame (3) is located below one side of the sludge spreading hopper (2). The filter cloth conveyor (14) is installed inside the installation frame (3). Multiple sets of spreading and pressing mechanisms are provided inside the installation frame (3) and above one end near the filter cloth conveyor (14). A box (4) is provided inside the installation frame (3) and below the filter cloth conveyor (14). A scraping mechanism is provided inside the box (4).
2. The fully automatic cloth-clamping sludge leveling machine according to claim 1, characterized in that: The multiple sets of flat pressing mechanisms include mounting seats (7) symmetrically arranged on both sides of the upper surface of the mounting frame (3). Each of the two mounting seats (7) is equipped with a first cylinder (6). The extension and retraction ends of the two first cylinders (6) are jointly mounted with pressing rollers (13) through fixed connecting rods.
3. The fully automatic cloth-clamping sludge leveling machine according to claim 1, characterized in that: The scraping mechanism includes an installation shell (20) that is inclinedly installed inside the housing (4) and near the top. A support plate (38) is fixedly installed on the upper surface of the installation shell (20) and near the middle. The support plate (38) corresponds to the center of the filter cloth conveying machine (14) below. Rolling mud guiding mechanisms are provided on both sides of the outer wall of the support plate (38).
4. The fully automatic cloth-clamping sludge leveling machine according to claim 3, characterized in that: The rolling mud guiding mechanism includes a U-shaped frame (32) fixedly installed on one side of the outer wall of the support plate (38). A fixed ring rod (26) is rotatably installed inside the U-shaped frame (32). The lower end of the fixed ring rod (26) extends to the lower part of the mounting shell (20). A limit member is provided at the lower end of the fixed ring rod (26). A motor (31) is fixedly installed on the upper part of the fixed ring rod (26). A roller (36) is fixedly installed on the output shaft of the motor (31). A rectangular channel is opened inside the roller (36). Wear-resistant plates (37) with corresponding arcs to the outer surface of the roller (36) are installed on both sides of the outer surface of the roller (36) and near the rectangular channel. An inclined irregular scraper (39) is fixedly installed on the outer surface of the wear-resistant plate (37). The irregular scraper (39) is in contact with the outer surface of the conveying filter cloth.
5. The fully automatic cloth-embedded sludge leveling machine according to claim 4, characterized in that: The limiting component includes a rotating shell (41) rotatably mounted on the outside of the fixed ring rod (26). Limiting shells (28) are provided at equal intervals along the circumferential direction on the outer surface of the rotating shell (41). An L-shaped rod (40) is fixedly mounted on one side of the fixed ring rod (26). A limiting slide cylinder (18) is slidably sleeved on the outside of the L-shaped rod (40).
6. The fully automatic cloth-clamping sludge leveling machine according to claim 4, characterized in that: A fixing plate is fixedly installed on one side of the outer wall of the mounting shell (20). A second cylinder (25) is fixedly installed on the outside of the fixing plate. A slide rod (35) is fixedly installed on the telescopic end of the second cylinder (25). A fixing shell (34) is sleeved on the upper part of the slide rod (35). The inside of the fixing shell (34) is fixedly connected to the upper part of the slide rod (35) by a bolt (30) that is fixedly inserted. Both ends of the bolt (30) are threaded with nuts, and the two nuts abut against the outer surfaces of both sides of the fixing shell (34). A sliding shell (29) is slidably installed on the upper part of the fixing shell (34). A contour heating scraper (33) is fixedly installed on one side of the sliding shell (29).
7. The fully automatic cloth-clamping sludge leveling machine according to claim 6, characterized in that: The mounting bracket (3) has a suspension seat (21) fixedly installed on both sides of the lower surface and near the top. The two suspension seats (21) have a third cylinder (27) fixedly installed on the lower surface. The two third cylinders (27) have guide rods (24) fixedly installed at their telescopic ends. The two guide rods (24) have an adjusting roller (19) installed inside them. The outer edge of the contour heating scraper (33) is set to correspond to the outer arc of the adjusting roller (19).
8. The fully automatic cloth-clamping sludge leveling machine according to claim 1, characterized in that: Inside the housing (4) and near the bottom of the filter cloth conveyor (14), a guide conveyor (5) is provided. Inside the housing (4) and near the side of the filter cloth conveyor (14), a receiving pipe (17) is connected and installed. One end of the receiving pipe (17) is connected to a spray pipe (23). Inside the spray pipe (23), nozzles (22) are installed at equal distances along the horizontal direction on both sides. The spray direction of the nozzles (22) is close to the bottom of the conveyed filter cloth. Inside the filter cloth conveyor (14) and near the corresponding pressure roller (13), tension rollers (8) are rotatably installed. The tension rollers (8) are connected to the lower surface of the mounting frame (3) through bearing seats at both ends. Multiple tension rollers (8) are located in the middle of the conveying filter cloth and are used to cooperate with the pressure rollers (13) to compress the sludge on the conveying filter cloth. A drain pipe (15) is installed inside the lower part of the box (4). A pump body (16) is installed at the end of the receiving pipe (17) away from the spray pipe (23). An external water pipe (12) is installed at the end of the pump body (16) away from the receiving pipe (17). The pump body (16) is located on the outside side of the box (4).