Vertical paving material feeding and discharging mechanism

Abstract

The present application belongs to the technical field of sludge treatment, and specifically discloses a vertical sludge laying in-out mechanism, which comprises a supporting platform, a cloth distribution mechanism installed on the supporting platform and used for conveying and recycling filter cloth, a sludge laying mechanism comprising a sludge laying box frame, a sludge laying box installed on the sludge laying box frame, a lifting unit for driving the sludge laying box to move up and down, and a feeding unit for feeding into the sludge laying box, two plug valves being arranged at the bottom of the sludge laying box, and a driving unit being arranged on the sludge laying box frame and used for driving the plug valves to open or close, a squeezing frame being a cavity structure with an upper opening and a lower opening and used for accommodating multiple layers of laid sludge, a pad being slidably fitted in the squeezing frame in a vertical direction, and a lifting platform being arranged below the squeezing frame and provided with a jacking unit, the jacking unit being used for driving the pad to move up and down so as to adjust the relative position between the sludge layer and the upper surface of the squeezing frame during the laying and discharging processes. The present application can improve the regularity of the filter cake shape and the uniformity of the thickness, and improve the treatment efficiency.

Description

Technical Field

[0001] This invention relates to the field of sludge treatment technology, specifically to a vertical sludge feeding and discharging mechanism. Background Technology

[0002] With the improvement of people's living standards and urbanization, the number of urban residents is increasing year by year. Against this backdrop, the discharge of domestic sewage and industrial wastewater is increasing annually, and sludge, as the main solid waste generated from sewage treatment, is also increasing accordingly. Sludge typically has a water content as high as 98%, exhibiting high fluidity and poor formability, making dewatering difficult. If not effectively treated, it will have a significant impact on the ecological environment, severely pollute limited clean water resources, and clog urban sewage treatment pipelines. Therefore, to truly solve this problem, it is necessary to actively improve urban sewage treatment systems and establish sound technological processes. However, in practice, some cities' sewage treatment systems employ relatively conservative technologies. While sewage itself is relatively easy to treat, the treatment of sludge carried in the sewage is extremely difficult and costly.

[0003] Currently, the most commonly used sludge dewatering equipment in the industry are plate and frame filter presses and screw presses. However, both of them have obvious technical defects in practical applications and are difficult to meet the requirements of efficient, stable and environmentally friendly treatment.

[0004] For plate and frame filter presses, feeding problems are common when processing sludge with high water content due to the sludge's high fluidity. If the sludge concentration is too low, insufficient feeding will result in irregularly shaped and unevenly thick filter cakes, affecting subsequent treatment. If the sludge contains many impurities, it can easily clog the feed inlet, causing equipment downtime and reducing processing efficiency. Simultaneously, unstable hydraulic system pressure can lead to excessively high feed pressure, causing the feed liquid to filter too quickly, resulting in holes and folds in the filter cloth. Screw presses, due to structural limitations, have a small single-unit processing capacity, making them unsuitable for the large-scale treatment needs of large wastewater treatment plants. Parallel operation of multiple units increases equipment costs and space requirements. More importantly, their reliance on disc slit filtration requires strict control over sludge properties, making them only suitable for sludge with low impurities and moderate viscosity. When dealing with high-sand sludge, high-viscosity slurry, or grease-containing sludge, they are prone to disc slit clogging and filtration failure, resulting in narrow applicability. Summary of the Invention

[0005] This invention provides a vertical sludge feeding and discharging mechanism, which aims to solve the defects of existing plate and frame filter presses when processing sludge with high water content. These defects include irregular filter cake shape, uneven thickness, and easy clogging of the feed inlet, which can cause equipment downtime and reduce processing efficiency.

[0006] This invention is achieved through the following technical solution: a vertical mud-laying and feeding mechanism, comprising:

[0007] Support platform;

[0008] A cloth feeding mechanism, mounted on the support platform, is used for conveying and recycling filter cloth;

[0009] The mud-laying mechanism is located above the working path of the material-laying mechanism. It includes a mud-laying box frame, a mud-laying box installed on the mud-laying box frame, a lifting unit that drives the mud-laying box to move up and down, and a feeding unit that feeds material into the mud-laying box. The bottom of the mud-laying box is provided with two slide valves, and the mud-laying box frame is provided with a driving unit that drives the slide valves to open or close.

[0010] The pressing frame is a cavity structure with openings at the top and bottom, used to accommodate multiple layers of sludge. A pad is vertically slidably fitted inside the pressing frame.

[0011] A lifting platform is located below the pressing frame, and a lifting unit is provided on the lifting platform to drive the pad plate to rise and fall.

[0012] Compared with existing technologies, this solution has the following advantages and beneficial effects:

[0013] In this solution, when the two gate valves in the sludge-laying mechanism are closed, the bottom of the sludge-laying box can be completely sealed, forming a closed sludge storage space. This not only allows the sludge to be continuously fed by the feeding unit, avoiding the problems of premature sludge leakage or scattering in traditional open sludge storage structures, but also ensures that the sludge is temporarily stored as needed. On the other hand, the closed space of the sludge-laying box reduces the contact between the sludge and the air, reducing the changes in the properties of high-moisture sludge caused by water evaporation (such as local clumping), while also preventing the spread of sludge odor, improving the operating environment around the equipment, and solving the defects of sludge loss and unstable properties during the sludge storage process of traditional equipment.

[0014] When sludge needs to be fed into the lower pressing frame, the drive unit drives two gate valves to open synchronously. The sludge temporarily stored in the sludge-laying box can fall precisely into the lower pressing frame through the bottom. Compared with the traditional method of directly feeding into the pressing frame, this device can achieve quantitative sludge dropping by controlling the opening and closing of the gate valves: the amount of sludge falling into the pressing frame can be controlled by adjusting the opening time or opening degree of the gate valves according to the volume of the pressing frame. This avoids the problem of excessive sludge overflow or insufficient sludge gaps in the filter frame caused by the uncontrollable feeding speed of traditional equipment, and provides a uniform sludge base for subsequent pressing and dewatering.

[0015] The lifting unit drives the sludge box to move towards the pressing frame. When the sludge box descends to the height set with the filter cloth, the slide valve inside the sludge box is opened, so that the sludge that has been filled with the sludge and has a regular rectangular shape is arranged on top of the filter cloth.

[0016] In this solution, the independent feeding unit first stores material into the sludge-laying box, and then discharges sludge through the bottom double slide valve. This is different from the traditional plate and frame filter press which directly feeds under high pressure. The feeding and sludge-laying are separated, and the double slide valves open and close synchronously. The sludge discharge flow rate is controllable, which effectively avoids the blockage of the feed inlet caused by the high water content sludge due to its strong fluidity and easy agglomeration, and eliminates equipment downtime caused by blockage.

[0017] The sludge laying box can be precisely adjusted in terms of the distance between itself and the filter cloth through the lifting unit. In view of the characteristics of high water content sludge with strong fluidity, the sludge laying height can be flexibly lowered to reduce the flow and diffusion of sludge during the falling process, and ensure that the single layer of sludge is laid flat and the thickness is uniform and controllable.

[0018] The dual slide valves are symmetrically arranged and synchronously driven to open and close, so that the high moisture content sludge falls evenly from the bottom of the sludge spreading box without deviation or agglomeration. This solves the problem of localized excessive or insufficient thickness of the filter cake caused by traditional single-inlet feeding, and ensures that the filter cake thickness is consistent.

[0019] In addition, the pressing frame in this solution has an upper and lower open cavity structure, which vertically supports multiple layers of sludge. The side walls of the cavity effectively constrain the sludge with high water content. Combined with the horizontal support of the pad, the lateral flow of sludge is doubly restricted, avoiding filter cake deformation and irregular shape caused by high fluidity. The pad and the pressing frame slide vertically together, which has strong load-bearing stability. For the characteristics of high water content sludge with large weight, there is no risk of sliding jamming or deformation, which ensures that the load-bearing surface is flat and provides a foundation for uniform filter cake formation.

[0020] The lifting unit on the lifting platform precisely drives the pad to rise and fall. After a single layer of sludge is laid, it descends synchronously to the corresponding height, always keeping the upper surface of the sludge flush with the upper surface of the pressing frame. Even if there is slight settling of the sludge with high water content, it can be compensated by height adjustment to ensure that the thickness of the multi-layer filter cake is uniform and consistent, solving the thickness deviation caused by the inability of traditional equipment to dynamically adjust.

[0021] During the discharge stage, the lifting unit drives the pad and filter cake to be lifted synchronously. With the help of filter cloth recycling, the filter cake is peeled off in an orderly manner. The high moisture content filter cake is not easy to stick together, with no residue or damage, avoiding downtime caused by cleaning residue and improving the continuity of operation.

[0022] In summary, this solution utilizes a feeding mechanism to transport and recycle filter cloth, providing support and isolation for high-moisture sludge, constraining sludge flow, preventing collapse and deformation, and ensuring a uniform filter cake. Simultaneously, the filter cloth is recycled, reducing cleaning residue and downtime. The double-panel valve and lifting unit at the bottom of the sludge-laying box ensure stable and uniform sludge distribution with no feed blockage. The adjustable sludge-laying height adapts to sludge flowability, ensuring uniform filter cake thickness. The lifting unit drives the pad plate in conjunction with the pressing frame to dynamically adjust the sludge layer height, constraining the flow of high-moisture sludge, ensuring no settling deviation in multi-layer stacking, and maintaining consistent filter cake thickness, thus improving dewatering efficiency. The entire mechanism is automated and interconnected, allowing for continuous operation without frequent shutdowns. The single-batch processing capacity is significantly higher than traditional plate and frame filter presses, effectively addressing the low processing efficiency of existing equipment.

[0023] Furthermore, the fabric-making mechanism includes:

[0024] frame;

[0025] A take-up and take-down platform, which is installed on top of the frame;

[0026] A track support, which is connected to one side of the frame and located on both sides of the pressing frame;

[0027] A filter cloth feeding drive unit is used to feed and flatten the filter cloth into the pressing frame;

[0028] The filter cloth winding unit is used to tighten and retract the filter cloth during discharge, thereby moving the sludge filter cake on the filter cloth for discharge, and to loosen the filter cloth during feeding.

[0029] Beneficial effects: The precise guidance of the track support and the power output of the feed filter cloth drive unit work together perfectly to ensure that the filter cloth is accurately conveyed and laid flat, ensuring that the filter cloth covers the entire bearing area of ​​the pressing frame without omission or overlap. This provides a regular foundation for the alternating stacking of multiple layers of sludge and filter cloth, avoiding problems such as sludge leakage and incomplete pressing caused by incomplete filter cloth laying.

[0030] The feeding filter cloth drive unit and the cloth winding unit form a closed-loop conveying and winding system: During feeding, the feeding filter cloth drive unit pulls the filter cloth, while the cloth winding unit simultaneously and precisely loosens the filter cloth, ensuring balanced and controllable tension. This solves the problem of sludge flow and diffusion caused by filter cloth loosening during the laying of high-moisture sludge. During discharge, the cloth winding unit tightens the filter cloth, and the feeding filter cloth drive unit coordinates the positioning to ensure that the filter cloth drives the filter cake to move smoothly, achieving integrated "laying-recycling" and improving the efficiency of the entire process. The coordinated actions are linked by automated control, eliminating the need for manual intervention, avoiding equipment downtime caused by human error, ensuring continuous operation, and solving the problem of frequent shutdowns in traditional plate and frame filter presses.

[0031] Furthermore, the feed filter cloth driving unit includes a linear drive component and a filter cloth driving frame. The linear drive component is mounted on the frame, and the filter cloth driving frame is slidably engaged with the track support. A drive roller is rotatably connected to the filter cloth driving frame. One end of the filter cloth wound on the cloth winding unit is located on the drive roller. The output end of the linear drive component is fixedly connected to the filter cloth driving frame and is used to drive the filter cloth driving frame to slide back and forth along the track support to lay the filter cloth flat.

[0032] Beneficial effects: The linear drive component is fixed to the frame, and the output end is rigidly connected to the filter cloth drive frame. It has high driving precision and stable power output, and can drive the filter cloth drive frame to slide back and forth along the track support. The filter cloth drive frame and the track support form a stable sliding pair with low sliding resistance and no jamming. With the symmetrical arrangement of the track support, the filter cloth drive frame is subjected to balanced force, avoiding unilateral deviation and tilting. This ensures that the filter cloth drive frame drives the drive roller to move smoothly along the preset trajectory, providing trajectory guarantee for the flat laying of the filter cloth.

[0033] Furthermore, the drive unit includes a power component and two sets of lead screw assemblies. The two sets of lead screw assemblies are located on both sides of the mud-laying box frame, and the power component can drive the two sets of lead screw assemblies to rotate. The lead screw assembly includes a left-hand lead screw and a right-hand lead screw with opposite helical directions connected coaxially. Both the left-hand lead screw and the right-hand lead screw are rotatably engaged with the mud-laying box frame. Both the left-hand lead screw and the right-hand lead screw are threaded with nut seats, and the two nut seats are fixedly connected to the two slide gate valves respectively.

[0034] Beneficial effects: This solution requires only one power component to drive two sets of lead screw assemblies to rotate synchronously. Through the coaxial reverse rotation design of the left-hand and right-hand lead screws in each set of lead screw assemblies, the corresponding nut seats and connected slide valves are driven to move synchronously closer or further away. Compared with the traditional dual-power component split-drive structure, no additional power component and corresponding control module are required. This not only reduces equipment purchase costs but also avoids synchronization errors caused by parameter differences between the two power components. It simplifies the control logic while improving the reliability and ease of maintenance of the drive system.

[0035] Two sets of lead screw assemblies are respectively connected to the two sides of the two slide gate valves (that is, each slide gate valve is driven by the nut seat of the lead screw assembly on both sides), forming a double-sided support drive structure: on the one hand, it can disperse the force on the slide gate valve during movement, avoid the tilting and jamming of the slide gate valve caused by traditional single-sided drive, ensure that the slide gate valve always remains horizontal when sliding along the mud-laying box frame, and reduce wear of sliding gap; on the other hand, the double-sided drive can balance the sludge resistance on the slide gate valve, prevent the slide gate valve from deforming due to excessive force on one side, extend the service life of the slide gate valve, and at the same time ensure the sealing of the bottom of the mud-laying box when it is closed, further reducing the risk of sludge leakage.

[0036] In this solution, when the gate valve opens to allow sludge to fall, a uniform sludge falling channel can be formed, avoiding excessive or insufficient sludge falling in some areas due to asynchronous opening and closing. This provides high-quality sludge substrate for subsequent pressing and dewatering, and improves the final filter cake qualification rate.

[0037] Furthermore, the power component includes a drive motor, a reducer, and two drive shafts; the drive motor is installed on one side of the mud-laying box frame, the input shaft of the reducer is connected to the output shaft of the drive motor, the reducer is a dual-shaft reducer, one end of each of the two drive shafts is connected to the two output shafts of the reducer, the drive shafts and the lead screw assembly are arranged perpendicular to each other, the other ends of the two drive shafts and the ends of the two sets of lead screw assemblies near the drive shafts are coaxially connected to helical gears, and the helical gears on the drive shafts mesh with the helical gears at the ends of the lead screw assemblies.

[0038] Beneficial Effects: In this solution, the dual-shaft reducer serves as the core of power distribution. Its input shaft is connected to the motor output shaft, and the two output shafts drive two sets of lead screw assemblies via transmission shafts. Compared to traditional single-shaft reducers, which require an additional distribution mechanism, the dual-shaft reducer can directly and evenly distribute the motor power to both transmission shafts, avoiding power loss or deviation during distribution. This ensures that the two sets of transmission shafts rotate at the same speed, thereby driving the two sets of lead screw assemblies to rotate synchronously. This guarantees the synchronicity of the opening and closing of the slide valve from the power source, further reducing problems such as mud leakage from the mud-laying box and sludge leveling deviation caused by uneven power distribution. The transmission shaft and lead screw assembly are set perpendicularly, and the two achieve power transmission through helical gear meshing. This transforms the lateral layout of the motor and reducer along one side of the mud-laying box frame into longitudinal drive of the lead screw assembly along both sides of the mud-laying box frame, avoiding spatial overlap between the power components and the lead screw assembly in the same direction.

[0039] Furthermore, the lead screw assembly also includes a connecting shaft, the two ends of which are coaxially and fixedly connected to the left-hand lead screw and the right-hand lead screw, respectively. Both ends of the left-hand lead screw and the right-hand lead screw are provided with support seats, which are fixedly connected to the outside of the mud-laying box frame. The left-hand lead screw and the right-hand lead screw are rotatably engaged with their respective support seats.

[0040] Beneficial effects: In this solution, the connecting shaft coaxially and fixedly connects the left-hand lead screw and the right-hand lead screw to form an integrated lead screw assembly. The connecting shaft can shorten the length of the entire lead screw assembly, which is convenient for production and manufacturing, saves costs, and facilitates on-site assembly, reduces the length of a single lead screw assembly, and reduces transportation difficulties.

[0041] Furthermore, the lifting unit includes a mud-laying box lifting cylinder, a top plate is connected to the top of the mud-laying box frame, the cylinder body of the mud-laying box lifting cylinder is fixedly connected to the top plate, and the output shaft of the mud-laying box lifting cylinder is fixedly connected to the mud-laying box.

[0042] Beneficial effects: In this solution, the mud-laying box is precisely raised and lowered by a lifting cylinder, which can flexibly adjust the distance between the mud-laying box and the filter cloth below to adapt to the filling needs of sludge with different moisture contents and viscosities. For highly fluid sludge with high moisture content, the distance can be reduced to shorten the sludge falling distance and avoid sludge diffusion and uneven accumulation. For sludge with higher viscosity, the distance can be increased to facilitate smooth sludge falling and improve filling uniformity. At the same time, it can adapt to different single-layer mud-laying thickness requirements, enhancing the equipment's adaptability.

[0043] Furthermore, the mud-laying box lifting cylinder in this solution can adjust the height of the mud-laying box, which facilitates the cloth-laying operation and provides more space for the operation.

[0044] Furthermore, the top of the mud-laying box is connected to multiple guide rods, which are evenly distributed around the mud-laying box, and one end of each guide rod passes through the top plate and slides vertically with the top plate.

[0045] Beneficial effects: The guide rod in this solution can guide the lifting and lowering movement of the mud-laying box, ensuring the stable lifting and lowering of the mud-laying box, providing all-round guiding constraints for the lifting and lowering of the mud-laying box, and avoiding problems such as deviation, tilting, and twisting of the mud-laying box during the lifting and lowering process.

[0046] Furthermore, the feeding unit includes a mud inlet pipe, which is a U-shaped pipe with a feed inlet at the top and both ends of the mud inlet pipe connected to the mud spreading box.

[0047] Beneficial effects: The U-shaped structure of the sludge inlet pipe in this solution allows for more uniform sludge entry into the sludge spreading box. This enables sludge to be fed simultaneously from both sides of the sludge spreading box. Compared to single-end feeding, this allows high-moisture sludge to be distributed quickly and evenly within the sludge spreading box, avoiding sludge agglomeration and localized compaction caused by single-side feeding. This ensures a level sludge level within the sludge spreading box, providing a prerequisite for subsequent simultaneous sludge discharge via dual-slide valves and uniform single-layer sludge spreading, further improving the uniformity of sludge spreading.

[0048] Furthermore, an installation plate is fixedly connected to the lifting platform, the lifting unit is installed on the installation plate, a water receiving tray is installed at the top of the lifting platform, and guide ports are opened on both sides of the water receiving tray.

[0049] Beneficial effects: The mounting plate in this solution facilitates the installation of the lifting unit, while the water receiving tray can collect the wastewater generated by the sludge entering the pressing frame and direct it to a designated location through the guide port, preventing wastewater from flowing around and polluting the environment. Attached Figure Description

[0050] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0051] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of a vertical mud-laying and material-discharging mechanism of the present invention;

[0052] Figure 2 This is a schematic diagram showing the arrangement and orientation of a single-layer filter cloth in an embodiment of a vertical mud-laying and feeding mechanism of the present invention.

[0053] Figure 3 This is a schematic diagram of the supporting platform in an embodiment of a vertical mud-laying and material-discharging mechanism of the present invention;

[0054] Figure 4 This is a schematic diagram of the material distribution mechanism in an embodiment of the vertical mud-laying and material-discharging mechanism of the present invention;

[0055] Figure 5 This is a schematic diagram of the mud-laying mechanism in an embodiment of the vertical mud-laying and feeding mechanism of the present invention;

[0056] Figure 6 This is a partial structural diagram of the mud-laying mechanism in an embodiment of the vertical mud-laying and feeding mechanism of the present invention;

[0057] Figure 7 This is a schematic diagram of the structure of the lifting platform, mounting plate and water receiving tray in an embodiment of a vertical mud-laying and material-discharging mechanism of the present invention.

[0058] The attached diagram shows the markings and corresponding component names:

[0059] Support platform 1, column 101, crossbeam 102, steel plate 103, support plate 104;

[0060] Fabric mechanism 2, end support 201, intermediate support 202, filter cloth drive frame 203, track support 204, linear drive component 205, take-up and untake-down platform 206, cloth roll support 207, cloth roll motor 208, magnetic powder clutch 209, cloth roll take-up roller 210, first roller shaft 211, second roller shaft 212, tension roller 213, third roller shaft 214, drive roller 215, slider 216;

[0061] 3. Mud-laying mechanism, 301. Vertical support frame, 302. Horizontal support frame, 303. Top plate, 304. Mud-laying box frame, 305. Mud inlet pipe, 306. Mud-laying box lifting cylinder, 307. Slide valve, 308. Mud-laying box, 309. Guide rod, 310. Drive motor, 311. Reducer, 312. Transmission shaft, 313. Helical gear, 314. Support seat, 315. Nut seat, 316. Connecting plate, 317. Connecting shaft, 318. Right-hand screw, 319. Left-hand screw, 320. Valve plate guide rail, 321. Mud-distribution pipe;

[0062] Press frame 4;

[0063] Lifting platform 5, mounting plate 501, water receiving tray 502;

[0064] Filter cake collection port 6. Detailed Implementation

[0065] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0066] As one embodiment of this application, such as Figures 1-2 As shown, this embodiment provides a vertical mud-laying and feeding mechanism, including:

[0067] Supporting platform 1, such as Figure 3 As shown, the support platform 1 in this embodiment includes columns 101, beams 102 and steel plates 103. Columns 101, beams 102 and steel plates 103 are all steel structures. Multiple columns 101 and beams 102 are provided. Columns 101 and beams 102 are welded or bolted together to form a frame structure. Steel plates 103 are laid on the upper surface of the frame structure formed by columns 101 and beams 102. Steel plates 103 serve as an important passage for workers to pass through and for equipment maintenance.

[0068] The cloth feeding mechanism 2, installed on the support platform 1, is used for conveying and recycling filter cloth;

[0069] The mud-laying mechanism 3 is located above the working path of the material-laying mechanism 2. It includes a mud-laying box frame 304, a mud-laying box 308 installed on the mud-laying box frame 304, a lifting unit that drives the mud-laying box 308 to move up and down, and a feeding unit that feeds material into the mud-laying box 308. The bottom of the mud-laying box 308 is provided with two slide valves 307, and the mud-laying box frame 304 is provided with a driving unit that drives the slide valves 307 to open or close.

[0070] The pressing frame 4 is a cavity structure with openings at the top and bottom, used to accommodate multiple layers of sludge. A pad is vertically slidable inside the pressing frame 4. The pad is initially located at the bottom of the pressing frame 4, and a limiting structure is provided at the bottom of the pressing frame 4 to prevent the pad from falling. For example, the opening at the bottom of the pressing frame 4 is smaller than the size of the pad, so that the bottom of the pressing frame 4 can support and limit the pad. In this embodiment, the pressing frame 4 is a cavity structure with openings at the top and bottom formed by welding multiple wall panels. It can process about 3 to 5 tons of sludge at a time, which is significantly higher than the processing capacity of plate and frame filter press and screw press.

[0071] The lifting platform 5 is located below the pressing frame 4. The lifting platform 5 is equipped with a lifting unit, which is used to drive the pad plate to rise and fall, so as to adjust the relative position of the sludge layer and the upper surface of the pressing frame 4.

[0072] Combination Figure 1 and 3 As shown, in this embodiment, the support platform 1 has a U-shaped structure, the pressing frame 4 is located inside the support platform 1, and a support plate 104 is fixedly connected to the inside of the support platform 1. A gap is left between the support plate 104 and the support platform 1 to form a filter cake collection port 6, which is located on the side away from the pressing frame 4.

[0073] In one embodiment, such as Figure 4 As shown, the fabric-making mechanism 2 in this embodiment includes:

[0074] The frame is located on top of the support platform 1 and is fixedly connected to the inside of the support platform 1 by bolts;

[0075] The take-up and put-down platform 206 is installed on the top of the frame. In this embodiment, the take-up and put-down platform 206 is welded and fixed to the frame or bolted to support the filter cloth.

[0076] 204 track support, combined Figure 1 and Figure 4 As shown, the track support 204 is connected to one side of the frame and located on both sides of the pressing frame 4;

[0077] A filter cloth feeding drive unit is used to feed and flatten the filter cloth into the pressing frame 4;

[0078] The filter cloth winding unit is used to tighten and retract the filter cloth during discharge, thereby moving the sludge filter cake on the filter cloth for discharge, and to loosen the filter cloth during feeding.

[0079] In this embodiment, the filter cloth feeding drive unit includes a linear drive component 205 and a filter cloth drive frame 203. The linear drive component 205 is mounted on the frame, and the filter cloth drive frame 203 is slidably engaged with the track support 204. In this embodiment, sliders 216 are fixedly connected to both ends of the filter cloth drive frame 203, and the sliders 216 are slidably engaged with the track support 204. A drive roller 215 is rotatably connected to the filter cloth drive frame 203. One end of the filter cloth wound on the cloth winding unit is located on the drive roller 215. The output end of the linear drive component 205 is fixedly connected to the filter cloth drive frame 203 and is used to drive the filter cloth drive frame 203 to slide back and forth along the track support 204 to lay the filter cloth flat. In this embodiment, the linear drive component 205 can be an existing structure such as a hydraulic cylinder, an electric push rod, or a ball screw drive assembly, and is used to drive the filter cloth drive frame 203 to slide linearly along the track support 204.

[0080] In this embodiment, the fabric winding unit includes a fabric winding motor 208, a fabric winding take-up roller 210, a fabric winding bracket 207, and a roller assembly. The roller assembly is mounted on the frame, and the fabric winding bracket 207 is located below the frame and fixed on the support plate 104 of the support platform 1. The two ends of the fabric winding take-up roller 210 are rotatably connected to the fabric winding bracket 207. The output shaft of the fabric winding motor 208 is coaxially connected to the fabric winding take-up roller 210. The fabric winding take-up roller 210 has filter cloth wound on it. After passing through the roller assembly, the filter cloth is located on the drive roller 215. The linear drive component 205 drives the filter cloth drive component to slide along the track bracket 204 and cooperates with the fabric winding motor 208 to drive the fabric winding take-up roller 210 to loosen the filter cloth, thereby guiding the filter cloth to the pressing frame 4 for flat laying.

[0081] In this embodiment, a magnetic powder clutch 209 is coaxially connected between the output shaft of the cloth winding motor 208 and the cloth winding roller 210. The magnetic powder clutch 209 ensures that the amount of filter cloth released by the feed filter cloth drive unit is the same as the amount of filter cloth arranged, preventing the cloth winding motor 208 from continuously releasing too much filter cloth and causing it to accumulate.

[0082] In one embodiment, such as Figure 4 As shown, the roller assembly includes a first roller 211, a second roller 212, a tension roller 213, and a third roller 214. The frame includes an end support 201 and an intermediate support 202, with the intermediate support 202 located between the end support 201 and the filter cloth drive frame 203. The first roller 211, second roller 212, and tension roller 213 are all rotatably connected to the end support 201, with the first roller 211 located diagonally above the second roller 212, and the tension roller 213 located directly above the first roller 211. The third roller 214 is rotatably mounted on the intermediate support 202. Figure 2 As shown, the filter cloth passes through the first roller 211, the second roller 212, the tension roller 213 and the third roller 214 in sequence and is placed on the drive roller 215. The drive roller 215 can support and guide the filter cloth. When the cloth winding motor 208 releases the filter cloth, the linear drive 205 drives the drive roller 215 to slide towards the pressing frame 4, thereby guiding the filter cloth to be laid flat in the pressing frame 4.

[0083] In one embodiment, combined Figure 1 , Figure 5 As shown, the mud-laying box 308 is located directly above the pressing frame 4. The mud-laying box 308 has a rectangular box structure. The mud-laying box frame 304 includes a vertical support frame 301 and a horizontal support frame 302. The horizontal support frame 302 is located on top of the vertical support frame 301 and is welded or fixed to the vertical support frame 301 with screws, thereby forming a frame structure.

[0084] In this embodiment, the lifting unit includes a mud-laying box lifting cylinder 306. In this embodiment, the mud-laying box lifting cylinder 306 is a hydraulic cylinder structure. A top plate 303 is connected to the top of the mud-laying box frame 304. The top plate 303 is welded or bolted to the transverse support frame 302 of the mud-laying box frame 304. The cylinder body of the mud-laying box lifting cylinder 306 is bolted to the top plate 303. The output shaft of the mud-laying box lifting cylinder 306 is fixedly connected to the mud-laying box 308. In this embodiment, there are two mud-laying box lifting cylinders 306. The two mud-laying box lifting cylinders 306 are symmetrically arranged on both sides of the mud-laying box 308. The output shaft of the mud-laying box lifting cylinder 306 is fixedly connected to the mud-laying box 308 through a flange.

[0085] In this embodiment, the top of the mud-laying box 308 is connected to multiple guide rods 309, which are evenly distributed around the mud-laying box 308. In this embodiment, four guide rods 309 are provided, and the four guide rods 309 are located at the four right angles of the mud-laying box 308. One end of the guide rod 309 passes through the top plate 303 and slides vertically with the top plate 303. The guide rods 309 can guide the lifting and lowering movement of the mud-laying box 308.

[0086] In one embodiment, combined Figure 6 As shown, in this embodiment, valve plate guide rails 320 are fixedly connected to both sides of the mud-laying box frame 304 by bolts. The two ends of the slide valve 307 are respectively slidably engaged with the two valve plate guide rails 320. The slide valve 307 slides along the valve plate guide rails 320, which can improve the smoothness and reliability of the slide valve 307.

[0087] In one embodiment, combined Figure 5 and Figure 6 As shown, in this embodiment, the feeding unit includes a sludge inlet pipe 305, which is a U-shaped pipe with a feed inlet at the top. Both ends of the sludge inlet pipe 305 are connected to the sludge spreading box 308. In this embodiment, both ends of the sludge inlet pipe 305 are connected to a sludge distribution pipe 321, which is also a U-shaped pipe and is connected to the sludge spreading box 308 at both ends. The sludge distribution pipe 321 is perpendicular to the sludge inlet pipe 305. In this embodiment, the arrangement of the sludge inlet pipe 305 and the sludge distribution pipe 321 can make the sludge entering the sludge spreading box 308 more evenly distributed.

[0088] In one embodiment, combined Figure 6As shown, in this embodiment, the drive unit that drives the slide gate valve 307 to open or close includes a power component and two sets of lead screw assemblies. The two sets of lead screw assemblies are located on both sides of the mud-laying box frame 304, and the power component can drive the two sets of lead screw assemblies to rotate. The lead screw assembly includes a left-hand lead screw 319 and a right-hand lead screw 318 with opposite helical directions connected coaxially. Both the left-hand lead screw 319 and the right-hand lead screw 318 are rotatably engaged with the mud-laying box frame 304. Both the left-hand lead screw 319 and the right-hand lead screw 318 are threadedly connected to a nut seat 315. The two nut seats 315 are fixedly connected to the two slide gate valves 307 respectively. In this embodiment, a connecting plate 316 is fixedly connected to one side of the nut seat 315. The connecting plate 316 is fixedly connected to the slide gate valve 307 by bolts.

[0089] In this embodiment, the lead screw assembly also includes a connecting shaft 317. The two ends of the connecting shaft 317 are coaxially and fixedly connected to the left-hand lead screw 319 and the right-hand lead screw 318 respectively through a coupling. Both ends of the left-hand lead screw 319 and the right-hand lead screw 318 are provided with support seats 314. The support seats 314 are fixedly connected to the outside of the mud-laying box frame 304. In this embodiment, the support seats 314 are fixed to the mud-laying box frame 304 by screws or bolts. The left-hand lead screw 319 and the right-hand lead screw 318 are respectively rotatably engaged with the corresponding support seats 314 through bearings.

[0090] In one embodiment, such as Figure 6 As shown, the power components in this embodiment include a drive motor 310, a reducer 311, and two drive shafts 312. The drive motor 310 is a servo motor, and the reducer 311 is a planetary reducer 311. The drive motor 310 is mounted on one side of the mud-laying box frame 304. The input shaft of the reducer 311 is connected to the output shaft of the drive motor 310. In this embodiment, the reducer 311 is a dual-shaft reducer 311. One end of each of the two drive shafts 312 is connected to the two output shafts of the reducer 311 via couplings. The drive shafts 312 are perpendicular to the lead screw assembly. The other ends of the two drive shafts 312 and the ends of the two sets of lead screw assemblies near the drive shafts 312 are coaxially connected with helical gears 313 (also called bevel gears). The helical gears 313 on the drive shafts 312 mesh with the helical gears 313 at the ends of the lead screw assemblies, thereby transmitting the power of the drive motor 310 to the two sets of lead screw assemblies and driving the two sets of lead screw assemblies to rotate. Since the lead screw assembly includes a left-hand lead screw 319 and a right-hand lead screw 318, during the overall rotation of the lead screw assembly, it will drive the two slide gate valves 307 to move closer to each other or move further away from each other synchronously.

[0091] In one embodiment, scraper blades (not shown in the figure) are installed on the bottom of the two slide gate valves 307 on the side closest to each other. The scraper blades are made of angle steel and one side of the scraper blades is fixedly connected to the slide gate valves 307 by bolts. Buffer pads are connected to the sides of the two scraper blades facing each other. In this embodiment, the buffer pads are fixed to the scraper blades by countersunk screws and are made of nylon material. The scraper plate installed at the bottom of the slide gate valve 307 forms a contacting motion with the upper surface of the filter frame during the opening and closing of the slide gate valve 307: when the slide gate valve 307 moves from the closed state to the open state, the scraper plate slides synchronously with the slide gate valve 307, which can initially level the sludge that has just fallen into the filter frame; when the slide gate valve 307 returns to the closed state, the scraper plate pushes the sludge in the filter frame again to level it a second time. The double leveling effect can effectively eliminate the problem of excessive local accumulation of sludge and edge depression in the filter frame, and ensure that the sludge forms a rectangular structure with small thickness deviation and regular shape in the pressing frame 4.

[0092] In one embodiment, combined Figure 7 As shown, a mounting plate 501 is fixedly connected to the lifting platform 5. The mounting plate 501 is welded or bolted to the lifting platform 5. The lifting unit is installed on the mounting plate 501. In this embodiment, the lifting unit is a lifting screw motor module (not shown in the figure), which includes a motor that outputs rotational power, a screw that converts rotational motion into linear motion, a nut seat 315 that cooperates with the screw, and a guide mechanism (such as a linear guide rail to prevent deviation during lifting) to ensure smooth lifting. After the motor starts, it drives the screw to rotate. The nut seat 315 on the screw cannot rotate with the screw under the constraint of the guide mechanism, but can only move linearly along the screw axis. This, in turn, drives the pad plate to rise and fall smoothly through the moving end of the module, achieving precise adjustment of the sludge layer position. In practice, the lifting unit can also be a linear drive mechanism such as a hydraulic cylinder or an electric push rod.

[0093] A water receiving tray 502 is installed at the top of the lifting platform 5. The pressing frame 4 is located on the water receiving tray 502. The water generated in the pressing frame 4 is collected on the water receiving tray 502. In practice, a drain hole can be opened on the water receiving tray 502. The drain hole is connected to a drain pipe, so as to guide the water on the water receiving tray 502 to a designated location and avoid the water flowing around and causing pollution.

[0094] The specific implementation process is as follows:

[0095] The overall operation of the vertical mud-laying and feeding mechanism of this invention is divided into two parts: feeding and discharging.

[0096] The feeding process is as follows: After the program starts, the lifting unit (not shown in the figure) on the lifting platform 5 will lift the pad at the bottom of the pressing frame 4, leaving a certain gap between the pad and the upper surface of the pressing frame 4. This gap is set according to the actual thickness of the filter cloth and the thickness of the sludge layer. When the pad moves to the designated position with the pressing frame 4, the linear drive 205 is activated. The linear drive 205 will push the filter cloth drive to move forward on the track support 204. At the same time, the drive roller 215 will guide the filter cloth to be laid flat above the pad of the pressing frame 4. At this time, the cloth winding motor 208 is in a relaxed state. The magnetic powder clutch 209 ensures that the amount of filter cloth laid by the drive roller 215 is released, preventing the cloth winding motor 208 from continuously releasing too much filter cloth and causing it to accumulate. After the filter cloth is laid, the linear drive 205 is driven back to the origin, and then the mud-laying box lifting cylinder 306 is activated to lower the mud-laying box 308 towards the pressing frame 4.

[0097] After the sludge-laying box 308 descends to the set height of the filter cloth, the drive motor 310 in the sludge-laying mechanism 3 is activated, causing the two gate valves 307 at the bottom of the sludge-laying box 308 to open away from each other. This allows the rectangular sludge, which is already filled inside the sludge-laying box 308, to be placed on top of the filter cloth. After the sludge-laying is completed, the sludge-laying box 308 will rise under the action of the two sludge-laying box lifting cylinders 306, returning to its initial position. At this time, the lifting unit on the lifting platform 5 will descend a certain height according to the thickness of the cloth, always ensuring that the upper surface of the sludge layer after sludge-laying is flush with the upper surface of the pressing frame 4.

[0098] After the lifting unit on the lifting platform 5 is lowered into position, the linear drive component 205 is activated to push the filter cloth drive frame 203 and the track support 204 forward to start the second layer of material. This process is repeated until the bottom pad of the pressing frame 4 is lowered back to its bottom and the pressing frame 4 is filled with sludge, or until the set number of sludge layers is reached, then the material is no longer applied and the bottom pad of the pressing frame 4 can be lowered back to the bottom.

[0099] After the fabric is finished, the pressing frame 4 can be pushed out to the designated position for pressing. After the pressing and dehydration are completed, the pressing frame 4 can be returned to the top of the lifting platform 5, and the material discharge work can begin.

[0100] The discharge process is as follows: After the pressing frame 4 retracts above the lifting platform 5, the lifting unit on the lifting platform 5, along with the pad at the bottom of the pressing frame 4 and the filtered sludge cake, lifts it up until the top layer of sludge cake is flush with the upper surface of the pressing frame 4. Then, the cloth winding motor 208 starts to rotate, tightening the filter cloth and simultaneously moving the sludge cake above the filter cloth backward, finally dropping it into the filter cake collection port 6. After the first layer of sludge filter cake is discharged, the lifting unit on the lifting platform 5 will lift another layer of sludge filter cake, always keeping the sludge filter cake flush with the upper surface of the pressing frame 4. After the lifting is completed, the second layer of sludge filter cake is discharged, and so on, until the last layer of sludge filter cake is discharged, at which point the entire discharge process ends.

[0101] This invention relates to a novel vertical sludge feeding and discharging mechanism, applicable to sludge with complex compositions, inconsistent solid sizes, and wide moisture content ranges. The thickness of a single layer of cloth can be freely adjusted between 5 and 30 mm. Sludge with different moisture content ranges is wrapped in a double layer of fine filter cloth before being pressed and dewatered. By adjusting the pressing pressure and time, sludge leakage from the edges of the filter cloth is prevented, ensuring no sludge leakage occurs throughout the dewatering process.

[0102] This new type of vertical mud-laying and feeding mechanism can process up to 3 tons of wet mud at a time. It only takes 10 to 30 minutes to lay up about 3 tons of wet mud. The time requirement can be met by adjusting the speed of the linear drive component 205 and the mud-laying box lifting cylinder 306. All the power source motors of the equipment are intermittent, and the power required for the lifting of the mud-laying device comes from the hydraulic cylinder. Therefore, the power consumption is extremely small and the equipment operating cost is low.

[0103] It should be noted that the above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vertical mud-laying and material-discharging mechanism, characterized in that, include: Support platform; A cloth feeding mechanism, mounted on the support platform, is used for conveying and recycling filter cloth; The mud-laying mechanism is located above the working path of the material-laying mechanism. It includes a mud-laying box frame, a mud-laying box installed on the mud-laying box frame, a lifting unit that drives the mud-laying box to move up and down, and a feeding unit that feeds material into the mud-laying box. The bottom of the mud-laying box is provided with two slide valves, and the mud-laying box frame is provided with a driving unit that drives the slide valves to open or close. The pressing frame is a cavity structure with openings at the top and bottom, used to accommodate multiple layers of sludge. A pad is vertically slidably fitted inside the pressing frame. A lifting platform is located below the pressing frame, and a lifting unit is provided on the lifting platform to drive the pad plate to rise and fall.

2. The vertical mud-laying and feeding mechanism according to claim 1, characterized in that, The fabric-making mechanism includes: frame; A take-up and take-down platform, which is installed on top of the frame; A track support, which is connected to one side of the frame and located on both sides of the pressing frame; A filter cloth feeding drive unit is used to feed and flatten the filter cloth into the pressing frame; The filter cloth winding unit is used to tighten and retract the filter cloth during discharge, thereby moving the sludge filter cake on the filter cloth for discharge, and to loosen the filter cloth during feeding.

3. A vertical mud-laying and material-discharging mechanism according to claim 2, characterized in that, The feed filter cloth driving unit includes a linear drive component and a filter cloth driving frame. The linear drive component is mounted on the frame, and the filter cloth driving frame is slidably engaged with the track support. A driving roller is rotatably connected to the filter cloth driving frame. One end of the filter cloth wound on the cloth winding unit is located on the driving roller. The output end of the linear drive component is fixedly connected to the filter cloth driving frame and is used to drive the filter cloth driving frame to slide back and forth along the track support to lay the filter cloth flat.

4. The vertical mud-laying and feeding mechanism according to claim 1, characterized in that, The drive unit includes a power component and two sets of lead screw assemblies. The two sets of lead screw assemblies are located on both sides of the mud-laying box frame. The power component can drive the two sets of lead screw assemblies to rotate. The lead screw assembly includes a left-hand lead screw and a right-hand lead screw with opposite helical directions connected coaxially. Both the left-hand lead screw and the right-hand lead screw are rotatably engaged with the mud-laying box frame. Both the left-hand lead screw and the right-hand lead screw are threaded with nut seats. The two nut seats are fixedly connected to the two slide valves respectively.

5. A vertical mud-laying and feeding mechanism according to claim 4, characterized in that, The power components include a drive motor, a reducer, and two drive shafts. The drive motor is mounted on one side of the mud-laying box frame. The input shaft of the reducer is connected to the output shaft of the drive motor. The reducer is a dual-shaft reducer. One end of each of the two drive shafts is connected to the two output shafts of the reducer. The drive shafts and the lead screw assembly are arranged perpendicular to each other. The other ends of the two drive shafts and the ends of the two lead screw assemblies near the drive shafts are coaxially connected to helical gears. The helical gears on the drive shafts mesh with the helical gears at the ends of the lead screw assemblies.

6. A vertical mud-laying and feeding mechanism according to claim 5, characterized in that, The lead screw assembly also includes a connecting shaft, the two ends of which are coaxially and fixedly connected to the left-hand lead screw and the right-hand lead screw, respectively. Both ends of the left-hand lead screw and the right-hand lead screw are provided with support seats, which are fixedly connected to the outside of the mud-laying box frame. The left-hand lead screw and the right-hand lead screw are rotatably engaged with their respective support seats.

7. A vertical mud-laying and material-discharging mechanism according to claim 1, characterized in that, The lifting unit includes a mud-laying box lifting cylinder, a top plate is connected to the top of the mud-laying box frame, the cylinder body of the mud-laying box lifting cylinder is fixedly connected to the top plate, and the output shaft of the mud-laying box lifting cylinder is fixedly connected to the mud-laying box.

8. A vertical mud-laying and material-discharging mechanism according to claim 7, characterized in that, The top of the mud-laying box is connected to multiple guide rods, which are evenly distributed around the mud-laying box. One end of each guide rod passes through the top plate and slides vertically with the top plate.

9. A vertical mud-laying and feeding mechanism according to claim 1, characterized in that, The feeding unit includes a mud inlet pipe, which is a U-shaped pipe with a feed inlet at the top and both ends of the mud inlet pipe connected to the mud spreading box.

10. A vertical mud-laying and feeding mechanism according to claim 1, characterized in that, An installation plate is fixedly connected to the lifting platform, the lifting unit is installed on the installation plate, a water receiving tray is installed at the top of the lifting platform, and guide ports are opened on both sides of the water receiving tray.

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