A sludge recovery device

Abstract

This invention relates to the field of mud recycling technology, specifically to a mud recycling device, comprising an inclined main body with a filter chamber located near the lower end; a closed annular filter screen with rolled edges integrally formed on both sides; a feed hopper located near the higher end of the main body, with a diverting block slidably fitted to the filter screen near the feed hopper inside the main body; and a filter pressing mechanism located within the filter chamber and above the material conveying surface of the filter screen. The filter pressing mechanism includes a housing slidably installed within the filter chamber, with a pressure plate and a sliding plate slidably installed inside the housing, and several extrusion rods at the bottom of the sliding plate. This invention uses the diverting block and rolled edges to gather and pre-drain mud, combined with the rigid support of the support plate and the multi-stage extrusion of the filter pressing mechanism to improve the dewatering effect. A linked backwashing mechanism automatically cleans the filter screen, resulting in a simplified overall structure and better operational stability.

Description

Technical Field

[0001] This invention relates to the field of mud recycling technology, and in particular to a mud and sludge recycling device. Background Technology

[0002] In fields such as construction, mining, and tunnel boring, a large amount of mud with high water content is generated. This type of mud needs to be dewatered before it can be stockpiled, transported, or utilized as a resource. Belt filter press is currently the mainstream mud dewatering equipment.

[0003] Existing belt filter presses mostly employ a double-layer flexible filter belt encircling the pressure rollers for extrusion, lacking an overall rigid support structure. The extrusion pressure is limited by the flexible filter belt, resulting in low dewatering efficiency, difficulty in reducing the moisture content of the filter cake, and a tendency for lateral slurry leakage and filter cake slippage. Furthermore, their feeding is often continuous, leading to uneven slurry distribution on the filter belt. During extrusion, a dense, hard surface shell easily forms, preventing the smooth discharge of internal moisture and further impacting the dewatering effect.

[0004] In addition, existing equipment lacks a targeted mud drainage structure, the mud edges are prone to loosening and overflowing, and there is no pre-set drainage channel, resulting in high resistance to water discharge during extrusion. Although some equipment attempts to add an internal extrusion structure, they mostly adopt radial expansion or air pressure and hydraulic assistance methods, which are complex in structure and have a high failure rate, and cannot meet the needs of small construction sites, mixing plants and other scenarios for equipment simplicity, stability and low cost. Summary of the Invention

[0005] The present invention provides a sludge recycling device to address the problems mentioned in the background art, such as the limited extrusion pressure, poor dewatering effect, and easy occurrence of slurry leakage and material slippage during operation; uneven slurry distribution easily forms a dense hard shell, which obstructs internal drainage; and the complex structure, poor stability, and high operating cost of conventional improvements.

[0006] To solve the above-mentioned technical problems, one technical solution adopted by the present invention is: to provide a sludge recycling device, including an inclined main body, wherein a filter press chamber is provided inside the main body near the lower end; A closed-loop filter screen, wherein both sides of the filter screen are integrally provided with rolled edges; The main body has a feed hopper at the top near the higher end, and a diversion block that slides and fits against the filter screen is located inside the main body near the feed hopper; A filter press mechanism is disposed inside the filter press chamber and located above the material conveying surface of the filter screen. The filter press mechanism includes a housing that is slidably installed in the filter press chamber. Inside the housing, a pressure plate and a slide plate are slidably installed. The bottom of the slide plate is provided with a plurality of extrusion rods. The pressure plate is provided with corresponding docking holes for the extrusion rods to pass through. An elastic element is provided between the pressure plate and the housing to provide a hard downward pressure. The slide plate can be further pressed down with the pressure plate to drive the extrusion rods to extend. A backflushing mechanism is provided inside the filter press chamber and is linked with the filter press mechanism. It can flush the mesh from the inside to the outside of the filter screen while the filter is being dewatered.

[0007] The present invention is further configured such that ear plates are symmetrically arranged on both sides of the outer side of the housing, a sliding opening is provided through the outer wall of the housing, a docking plate is slidably installed inside the housing, the two ends of the docking plate extend to the outer side of the housing via the sliding opening, the docking plate and the pressure plate are slidably connected by a connecting rod and a connecting cylinder, an elastic element is fitted on the outside of the connecting rod, an elastic element is provided between the top of the docking plate and the housing, a pushing assembly is provided on the outside of the main body, and the output end of the pushing assembly is connected to the docking plate.

[0008] The present invention is further configured such that an elastic element four is sleeved on the outside of the extrusion rod, one end of the elastic element four is connected to the pressure plate one, and the other end is connected to the slide plate one, which is used to drive the extrusion rod to retract when the filter press mechanism is reset.

[0009] The invention is further configured such that the diversion block is provided in multiple sets to gather the mud near the rolled edge inward and divide the mud into longitudinal drainage spaces. A water-permeable support plate is fixed on the inner side of the filter screen ring corresponding to the lower part of the filter pressing mechanism to support the filter screen from the inside. A water-permeable support plate is fixed on the outer side of the filter screen ring corresponding to the lower part of the backwashing mechanism to support the filter screen from the outside.

[0010] The present invention is further configured such that the backflushing mechanism includes a housing two slidably connected within the filter press chamber. Sliding openings two are provided through the outer walls of the housing two on both sides. Ear plates two are symmetrically arranged on the outer sides of the housing two. One end of each ear plate two extends to the outside of the filter press chamber. A positioning slide rod is fixed inside the filter press chamber at a position corresponding to the ear plate two. The positioning slide rod passes through and slidably connects to the ear plate two and ear plate one. An elastic element two is provided at the bottom of the ear plate two, sleeved outside the positioning slide rod. A top frame is fixed inside the housing two near the upper position. A pressure plate two is slidably installed inside the housing two below the top frame. A docking plate two is provided on both sides of the pressure plate two, extending through the sliding openings two to the outer side. The docking plate one is fixedly connected to the docking plate two via a connecting frame.

[0011] The present invention is further configured such that a water collection frame is fixed inside the filter press chamber, the water collection frame is located above the housing, a guide plate extending to the bottom of the feed hopper is fixed on the higher side of the water collection frame, a guide surface is provided at the bottom of the inner side of the water collection frame, and a drain outlet is provided on the lower side of the water collection frame; a filter plate is fixed inside the water collection frame above the guide surface.

[0012] The invention is further configured such that a plurality of water inlet holes are uniformly and through the top of the pressure plate two, and a sealing component is fixed at the bottom of the pressure plate two corresponding to the position of each water inlet hole. The sealing component includes a base two fixedly connected to the pressure plate two, a slide rod two slidably installed in the center of the interior of the base two, a water inlet two communicating with the water inlet hole is opened inside the base two, and a float plate is fixed at the bottom of the slide rod two.

[0013] The present invention is further configured such that a plurality of water outlet holes are uniformly and through the bottom of the second housing, and an opening assembly is fixed inside the second housing corresponding to the position of each water outlet hole. The opening assembly includes a base fixedly connected to the second housing, a water inlet communicating with the water outlet holes is opened inside the base, a slide rod is slidably connected inside the base, a sealing plate is fixed to the top of the slide rod, a top rod is fixed to the bottom of the slide rod, and a frame is fixed to the bottom edge of the second housing.

[0014] The invention is further configured such that a drive shaft is rotatably mounted inside the main body near both ends, the filter screen is sleeved on the outside of the drive shaft, a brush wheel is rotatably mounted inside the lower end of the main body below the filter screen, and a drive assembly is provided outside the main body, the output end of the drive assembly being connected to the drive shaft and the brush wheel respectively.

[0015] The beneficial effects of the sludge recycling device of the present invention are as follows: 1. The diversion block and the rolled edges on both sides of the filter screen work together to gather the slurry near the edge of the filter screen towards the center, while dividing the slurry into longitudinal drainage spaces. This not only avoids the problem of lateral overflow of slurry during transportation, but also releases some of the free water in the slurry in advance, significantly reducing the resistance of subsequent extrusion and dewatering.

[0016] 2. The permeable support plate on the inner side of the filter screen ring provides stable rigid support for the filter press operation. Together with the pressure plate in the filter press mechanism, which is provided with rigid downward pressure by the elastic element, it can achieve a higher extrusion pressure than conventional double-layer filter belt extrusion, and significantly improve the dewatering efficiency. The linkage structure formed by the pressure plate, the slide plate, and the extrusion rod can pierce the dense hard shell on the surface of the mud cake after the mud initially coagulates into a mud cake, cut the internal compact structure and form multiple drainage channels, so that the residual water inside the mud cake can be smoothly discharged during the subsequent pressurization process, effectively reducing the moisture content of the final mud cake.

[0017] 3. The backwashing mechanism and the filter press mechanism are synchronized through a connecting frame, eliminating the need for an additional independent drive device and simplifying the overall structure. The water collection frame can collect and filter the water that naturally seeps out of the mud and is squeezed out, providing a clean backwashing water source for the backwashing mechanism. The backwashing mechanism flushes the mesh from the inside out, effectively removing fine mud embedded in the mesh, solving the problem of poor water permeability caused by filter clogging, and extending the service life of the filter. Attached Figure Description

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, a detailed description is provided below in conjunction with the accompanying drawings.

[0019] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] Figure 1 This is a three-dimensional structural diagram of a sludge recycling device according to the present invention; Figure 2 This is a cross-sectional view of a sludge recycling device according to the present invention; Figure 3 This is a separation diagram of a sludge recycling device according to the present invention; Figure 4 This is an enlarged view of the filter press mechanism and backflushing mechanism of a sludge recycling device according to the present invention; Figure 5 This is a partial cross-sectional view of the backflushing mechanism of a sludge recycling device according to the present invention; Figure 6 This is a separation diagram of the backflushing mechanism of a sludge recycling device according to the present invention; Figure 7 This is a cross-sectional view of the sealing assembly and opening assembly of a sludge recycling device according to the present invention; Figure 8 This is a cross-sectional view of the filter press mechanism of a sludge recycling device according to the present invention; Figure 9 This is a top view of the filter press mechanism of a sludge recycling device according to the present invention. Figure 10 This is a bottom view of the separation of the filter press mechanism in a sludge recycling device according to the present invention.

[0021] The diagram is labeled as follows: 1. Main body; 11. Filter press chamber; 111. Positioning slide rod; 12. Pushing assembly; 13. Drive shaft; 131. Filter screen; 132. Edge curling; 133. Support plate; 14. Brush wheel; 141. Drive assembly; 15. Diverter block; 16. Feed hopper; 2. Filter press mechanism; 21. Shell 1; 211. Ear plate 1; 212. Slide port 1; 22. Slide plate 1; 221. Extrusion rod; 23. Connecting plate 1; 231. Connecting rod; 2311. Connecting cylinder; 232. Elastic element 1; 233. Pressure plate 1; 2331. Connecting hole; 234. Connecting frame; 235. Elastic element 3 3. Backflush mechanism; 31. Shell II; 311. Sliding port II; 312. Top frame; 313. Ear plate II; 314. Elastic element II; 315. Enclosure frame; 32. Pressure plate II; 321. Connecting plate II; 322. Water inlet; 33. Opening assembly; 331. Base I; 332. Water outlet I; 333. Sliding rod I; 334. Sealing plate; 335. Top rod; 34. Sealing assembly; 341. Base II; 342. Water outlet II; 343. Sliding rod II; 344. Float plate; 35. Water collection frame; 351. Guide surface; 352. Drain outlet; 353. Filter plate; 354. Drainage plate. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0023] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the indicated position or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a transmission connection; it can be a direct connection or an indirect connection through an intermediate medium; it can also refer to the internal communication of two elements or the interaction between two elements.

[0024] Please see Figure 1 - Figure 10 A sludge recycling device includes an inclined main body 1, and a filter press 11 is provided inside the main body 1 near the lower end. A closed ring-shaped filter screen 131 has rolled edges 132 integrally provided on both sides of the filter screen 131; A feed hopper 16 is provided at the top of the main body 1 near the higher end, and a diversion block 15 is provided inside the main body 1 near the feed hopper 16, which slides and fits against the filter screen 131. The filter press mechanism 2 is installed inside the filter press chamber 11 and is located above the material conveying surface of the filter screen 131. The filter press mechanism 2 includes a housing 21 slidably installed in the filter press chamber 11. Inside the housing 21, a pressure plate 233 and a slide plate 22 are slidably installed. The bottom of the slide plate 22 is provided with a plurality of extrusion rods 221. The pressure plate 233 is provided with corresponding docking holes 2331 for the extrusion rods 221 to pass through. An elastic element 232 that provides hard downward pressure is provided between the pressure plate 233 and the housing 21. The slide plate 22 can be further pressed down with the pressure plate 233 to drive the extrusion rods 221 to extend. Backwashing mechanism 3 is located inside the filter press chamber 11 and is linked with the filter press mechanism 2. It can flush the mesh from the inside to the outside of the filter screen 131 while dewatering. The diversion block 15 is provided with multiple sets to gather the mud near the rolled edge 132 inward and divide the mud into longitudinal drainage spaces. The inner side of the filter screen 131 is fixed with a water-permeable support plate 133 corresponding to the bottom of the filter press mechanism 2, which is used to support the filter screen 131 from the inside. The outer side of the filter screen 131 is fixed with a water-permeable support plate 133 corresponding to the bottom of the backflushing mechanism 3, which is used to support the filter screen 131 from the outside. A drive shaft 13 is rotatably mounted inside the main body 1 near both ends. A filter screen 131 is sleeved on the outside of the drive shaft 13. A brush wheel 14 is rotatably mounted inside the lower end of the main body 1 below the filter screen 131. A drive assembly 141 is provided outside the main body 1. The output end of the drive assembly 141 is connected to the drive shaft 13 and the brush wheel 14 respectively.

[0025] By adopting the above technical solution, the drive shaft 13 and the filter screen 131 form a ring transmission cooperation, which can ensure that the filter screen 131 operates smoothly and at an adjustable speed at low speed. A fixed gap is reserved between the brush wheel 14 and the outer surface of the filter screen 131 to avoid hard friction wear and ensure stable cleaning operation. The pressure plate 233 and the sliding plate 22 form a two-stage pressing cooperation based on a fixed stroke ratio to complete the dehydration and squeezing in steps. The squeezing rod 221 and the docking hole 2331 are set with a precise fit gap, and the sliding movement is smooth and without jamming. The elastic element 232 outputs a stable initial clamping force, so that the early squeezing load is uniform and controllable. The spray nozzle of the backwash mechanism 3 maintains a fixed distance from the filter screen 131 and is combined with constant water pressure to ensure a balanced and stable flushing force. The frame 315 covers a large area of ​​the working surface of the filter screen 131, restricts the diffusion of backwash water flow, and improves the cleaning coverage and flushing efficiency of the filter screen 131.

[0026] The outer sides of the housing 21 are symmetrically provided with ear plates 211. A sliding opening 212 is provided through the outer wall of the housing 21. A docking plate 23 is also slidably installed inside the housing 21. Both ends of the docking plate 23 extend to the outside of the housing 21 via the sliding opening 212. The docking plate 23 and the pressure plate 233 are slidably connected by a connecting rod 231 and a connecting cylinder 2311. An elastic element 232 is sleeved on the outside of the connecting rod 231. An elastic element 3 235 is provided between the top of the docking plate 23 and the housing 21. A pushing assembly 12 is provided on the outside of the main body 1. The output end of the pushing assembly 12 is connected to the docking plate 23. An elastic element 4 is sleeved on the outside of the extrusion rod 221. One end of the elastic element 4 is connected to the pressure plate 233, and the other end is connected to the sliding plate 22. It is used to drive the extrusion rod 221 to retract when the filter press mechanism 2 is reset.

[0027] By adopting the above technical solutions, the power transmission system relies on the push component 12, the docking plate 23, and the connecting rod 231 for stable transmission, and the sliding structure has good fit accuracy. The two-stage pressure filter mechanism 2 relies on the pressure plate 233 and the sliding plate 22 to achieve graded pressing, and the extrusion rod 221 is precisely assembled. The elastic reset system provides a stabilizing force through the elastic element 232 and the elastic element 4. The various structures cooperate with each other to ensure precise coordination between the device's pressing operation and the component reset action.

[0028] The backwashing mechanism 3 includes a housing 31 slidably connected to the filter chamber 11. Sliding openings 311 are provided on both sides of the outer wall of the housing 31. Ear plates 313 are symmetrically arranged on both sides of the outer wall of the housing 31. One end of the ear plate 313 extends to the outside of the filter chamber 11. A positioning slide rod 111 is fixed inside the filter chamber 11 at the position corresponding to the ear plate 313. The positioning slide rod 111 passes through the ear plate 313 and the ear plate 211 and is slidably connected to them. An elastic element 314 is provided at the bottom of the ear plate 313 and sleeved on the outside of the positioning slide rod 111. A top frame 312 is fixed inside the housing 31 near the top. A pressure plate 32 is slidably installed inside the housing 31 below the top frame 312. A docking plate 321 is provided on both sides of the pressure plate 32, extending outward through the sliding openings 311. The docking plate 23 is fixedly connected to the docking plate 321 through a connecting bracket 234. A water collection frame 35 is fixed inside the filter press chamber 11. The water collection frame 35 is located above the housing 31. A guide plate 354 extending to the bottom of the feed hopper 16 is fixed on the higher side of the water collection frame 35. A guide surface 351 is provided at the bottom of the inner side of the water collection frame 35. A drain outlet 352 is opened on the lower side of the water collection frame 35. A filter plate 353 is fixed inside the water collection frame 35 above the guide surface 351.

[0029] By adopting the above technical solution, the first docking plate 23 is rigidly connected to the second docking plate 321 via the connecting frame 234, which allows the filter press mechanism 2 and the backwash mechanism 3 to maintain synchronous displacement, resulting in stronger structural linkage consistency. The water collection frame 35 guides the water flow to collect in a directional manner through the guide surface 351, and together with the filter plate 353, it intercepts impurities, ensuring the cleanliness of the backwash water. The diversion plate 354 is widely distributed, which can fully collect the wastewater generated during operation as a backwash water source. The top frame 312 and the second pressure plate 32 are reserved with a reasonable compression stroke to meet the water pressure adjustment space. The sliding port 311 and the second docking plate 321 are provided with an adaptation gap to accommodate component deformation and ensure smooth and unobstructed sliding movement.

[0030] The top of the pressure plate 32 is evenly provided with several water inlet holes 322. The bottom of the pressure plate 32 is fixed with a sealing component 34 corresponding to the position of each water inlet hole 322. The sealing component 34 includes a base 341 fixedly connected to the pressure plate 32. A slide rod 343 is slidably installed in the center of the base 341. A water inlet 342 connected to the water inlet hole 322 is provided in the base 341. A float plate 344 is fixed at the bottom of the slide rod 343. The bottom of the second housing 31 is evenly provided with several water outlet holes. Inside the second housing 31, an opening assembly 33 is fixed at the position of each water outlet hole. The opening assembly 33 includes a base 331 fixedly connected to the second housing 31. A water inlet 332 communicating with the water outlet hole is opened inside the base 331. A slide rod 333 is slidably connected inside the base 331. A sealing plate 334 is fixed at the top of the slide rod 333. A top rod 335 is fixed at the bottom of the slide rod 333. A frame 315 is fixed at the bottom edge of the second housing 31.

[0031] By adopting the above technical solution, the float 344, relying on its own material properties and matching the buoyancy triggering conditions, can automatically control the closing state of the sealing component 34, realizing the autonomous opening and closing of the water path. The sealing plate 334 and the water inlet 332 fit tightly together, which can improve the contact sealing effect and effectively reduce water leakage. The top rod 335 completes the start and stop of the action by relying on the set stroke and triggering force, and the sliding rod 333 and the base 331 adopt a precision tolerance fit to ensure smooth and stable sliding operation. The frame 315 limits the spray angle by its own height dimension, which can regulate the spray range of the flushing water flow and make the cleaning operation of the filter screen 131 more uniform.

[0032] Working principle and usage process of this invention: The device uses the inclined main body 1 as the supporting foundation. During operation, it relies on the orderly linkage of various mechanisms to complete the entire process of continuous mud feeding, uniform diversion, rigid grading and filtration, mud cake crushing and water guiding, automatic cleaning of filter screen 131 and high-pressure backwash purification. It effectively improves the defects of traditional equipment such as low dewatering efficiency, easy mud leakage, easy clogging of filter screen 131 and obstruction of mud cake drainage.

[0033] During operation, slurry is continuously fed into the main body 1 through the feed hopper 16, using an intermittent feeding mode to precisely match the operating rhythm of the filter press mechanism 2, ensuring that the amount of slurry fed in each filter press operation is moderate and avoiding material accumulation and overflow. The drive assembly 141 is started, synchronously driving the drive shaft 13 and brush wheel 14 to rotate. The rotating drive shaft 13 drives the outer ring filter screen 131 to circulate and convey the slurry. The integrally formed rolled edges 132 on both sides of the filter screen 131 can gather the slurry on both sides, effectively preventing material loosening and slippage, and improving the stability of material conveying.

[0034] During the forward transport of slurry by the filter screen 131, it will pass through multiple diversion blocks 15 in sequence. The outer wall of the diversion block 15 slides and adheres to the surface of the filter screen 131, which can gather the slurry near the rolled edge 132 towards the center, and at the same time divide and comb the overall slurry, so that reasonable gaps are reserved between the slurry layers, which facilitates the early natural precipitation of free water inside the slurry and reduces the drainage load of subsequent filter press operation.

[0035] After being diverted and combed, the slurry smoothly enters the filter chamber 11 inside the main body 1 along with the filter screen 131. When the slurry is delivered to the position directly below the filter press mechanism 2, the feed hopper 16 stops feeding, and the drive shaft 13 stops rotating, keeping the filter screen 131 stationary. Subsequently, the push assembly 12 on the outside of the main body 1 is activated, pulling the docking plate 23 downward. Since the shell 21 is pressed against the upper surface of the docking plate 23, the downward movement of the docking plate 23 will drive the shell 21 to move downward synchronously until the bottom of the shell 21 is attached to the surface of the filter screen 131, completely sealing the slurry to be filtered inside the shell 21.

[0036] The support plate 133, fixedly installed inside the filter press chamber 11, has a permeable structure and can provide rigid support from the inside of the filter screen 131, preventing the filter screen 131 from collapsing and deforming under pressure, and ensuring the stability of the extrusion structure. After the shell 21 is fitted and positioned, it remains stationary, while the docking plate 23 continues to move downward, compressing the elastic element 235. Relying on the elastic force of the elastic element 235, the shell 21 and the filter screen 131 are kept in close contact, preventing mud leakage during the extrusion process. In this state, the docking plate 23 continues to move downward and pushes the pressure plate 233 downward through the elastic element 232. With the rigid pre-tightening force of the elastic element 232, rigid and stable extrusion is achieved, completing the initial dewatering of the mud. The water in the mud is discharged outward through the permeable structure of the filter screen 131 and the support plate 133, while the mud residue is trapped on the surface of the filter screen 131 and gradually solidifies.

[0037] After the initial compression reaches its limit, a dense, hard shell forms on the surface of the mud, hindering internal drainage. At this point, the docking plate 23 continues to fall and abuts against the sliding plate 22, pushing the sliding plate 22 downwards in sync. This causes multiple sets of extrusion rods 221 at the bottom to penetrate the docking holes 2331 at the top of the pressure plate 233, vertically inserting into the solidified mud cake. The extrusion rods 221 can pierce the hard surface structure of the mud cake, cutting through the dense material layer inside, forming multiple evenly distributed drainage channels inside the mud cake, opening up pathways for deep water drainage. The elastic element 4 fitted on the outside of the extrusion rods 221 provides cushioning protection, preventing structural damage caused by hard puncture. Subsequently, the docking plate 23 continues to press down, and the connecting rod 231 and the connecting cylinder 2311 cooperate to ensure the stability of the vertical movement of the pressure plate 233. Finally, deep filtration is completed through rigid direct pressure, significantly reducing the overall moisture content of the mud cake and significantly improving the dewatering effect.

[0038] After a single filter press operation is completed, the push assembly 12 pulls the docking plate 23 upward to reset, the filter press mechanism 2 is lifted as a whole and detached from the surface of the filter screen 131, the drive shaft 13 restarts, and drives the filter screen 131 to circulate, conveying the dewatered mud cake to the lower end of the equipment for automatic unloading. After the mud cake is detached, the surface of the filter screen 131 passes through the brush wheel 14 along the conveying path. The high-speed rotating brush wheel 14 can physically clean the residual floating scum on the surface of the filter screen 131, completing the basic cleaning operation.

[0039] During the filter screen 131's filtration process, fine particles can easily become embedded in the mesh, causing blockages over time. Therefore, during the synchronous downward pressing phase of the filter press mechanism 2, the connecting plate 23 will drive the backwash mechanism 3 to move downwards in sync through the fixed connecting frames 234 on both sides. The entire device has an inclined structure design, allowing the water naturally released from the sludge and the wastewater from the filter press to flow into the water collection frame 35. The guide plate 354 can guide and collect the scattered wastewater from the feeding area. The water flow first passes through the filter plate 353 to filter and intercept fine mud and impurities in the water. The filtered clean water flows along the guide surface 351 and gathers above the housing 31, providing a stable water source for the backwashing operation of the filter screen 131. The intercepted impurities can be flushed out of the drain outlet 352 periodically with the water flow, realizing the recycling of water resources and centralized treatment of impurities.

[0040] During the downward movement of the recoil mechanism 3, the shell 31 maintains its initial height through the elastic support of the elastic element 314. The pressure plate 32 moves downward synchronously with the docking plate 321, creating a relative displacement with the shell 31. As the pressure plate 32 continues to move downward, the water accumulated inside the shell 31 comes into contact with the sealing component 34. The float 344 slides upward along the slide rod 343 under the action of buoyancy, eventually fitting against the base 341 to completely seal the permeable port 342, thus combining the pressure plate 32, the sealing component 34, and the water inside the shell 31 into a single structure. Subsequently, the downward force of the docking plate 321 is transmitted to the shell 31, compressing the elastic element 314 and causing the shell 31 to move downward as a whole.

[0041] When housing 2 31 approaches the inner side of filter screen 131, the push rod 335 at the bottom of the opening assembly 33 contacts the surface of filter screen 131. Relying on the supporting reaction force of filter screen 131 and support plate 133, push rod 335 pushes slide rod 1 333 and sealing plate 334 in the opposite direction, causing sealing plate 334 to disengage from the sealing position and opening the communication channel between water inlet 1 332 and water outlet at the bottom of housing 2 31. The pressurized water inside housing 2 31 is quickly sprayed out of the water outlet at high pressure, backwashing the mesh from the inside of filter screen 131 outwards, thoroughly cleaning the fine blockage residue embedded inside. The frame 315 set at the bottom of housing 2 31 can limit the water spray range, so that the backwash water flow evenly covers the working area, improving the overall cleaning effect.

[0042] After the entire operation is completed, component 12 is pushed back to its original position, and filter press mechanism 2 and backflushing mechanism 3 move upward synchronously back to their initial positions. Elastic components such as elastic element 2 314, elastic element 1 232, and elastic element 3 235 rebound and reset in sequence, and each mechanism returns to its initial interval state. The equipment enters standby mode, waiting for the next round of mud recovery filter press operation to begin. The entire equipment relies on pure mechanical linkage to complete the operation, without the need for hydraulic or pneumatic auxiliary structures. It has a simple structure, low failure rate, and lower operating costs, and can adapt to the stable use requirements of various small and medium-sized construction scenarios.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sludge recycling device, characterized in that, include: The main body (1) is arranged at an angle, and a filter press (11) is provided inside the main body (1) near the lower end. A closed annular filter (131) has rolled edges (132) integrally provided on both sides of the filter (131). The main body (1) has a feed hopper (16) at the top near the higher end, and a diversion block (15) that slides and fits against the filter screen (131) is provided inside the main body (1) near the feed hopper (16). The filter press mechanism (2) is disposed in the filter press chamber (11) and located above the material conveying surface of the filter screen (131); The filter press mechanism (2) includes a housing (21) slidably installed in the filter press chamber (11). Inside the housing (21), a pressure plate (233) and a sliding plate (22) are slidably installed. The bottom of the sliding plate (22) is provided with a plurality of extrusion rods (221). The pressure plate (233) is provided with corresponding docking holes (2331) for the extrusion rods (221) to pass through. An elastic element (232) that provides hard downward pressure is provided between the pressure plate (233) and the housing (21). The sliding plate (22) can be further pressed down with the pressure plate (233) to drive the extrusion rods (221) to extend. The backwash mechanism (3) is located inside the filter press chamber (11) and is linked with the filter press mechanism (2). It can flush the mesh from the inside to the outside of the filter screen (131) while dewatering.

2. The sludge recycling device according to claim 1, characterized in that: The outer sides of the housing (21) are symmetrically provided with ear plates (211). The outer wall of the housing (21) is provided with a sliding opening (212). The inner side of the housing (21) is also slidably installed with a docking plate (23). The two ends of the docking plate (23) extend to the outer side of the housing (21) through the sliding opening (212). The docking plate (23) and the pressure plate (233) are slidably connected by a connecting rod (231) and a connecting cylinder (2311). The elastic element (232) is sleeved on the outside of the connecting rod (231). The top of the docking plate (23) and the housing (21) are provided with an elastic element (235). The outer side of the main body (1) is provided with a pushing component (12). The output end of the pushing component (12) is connected to the docking plate (23).

3. The sludge recycling device according to claim 2, characterized in that: The extrusion rod (221) is fitted with an elastic element four. One end of the elastic element four is connected to the pressure plate (233), and the other end is connected to the slide plate (22). It is used to drive the extrusion rod (221) to retract when the filter press mechanism (2) is reset.

4. The sludge recycling device according to claim 1, characterized in that: The diversion block (15) is provided with multiple sets for gathering the mud near the rolled edge (132) inward and dividing the mud into longitudinal drainage spaces. The inner side of the filter screen (131) is fixed with a water-permeable support plate (133) below the filter press mechanism (2) for supporting the filter screen (131) from the inside. The outer side of the filter screen (131) is fixed with a water-permeable support plate (133) below the backwash mechanism (3) for supporting the filter screen (131) from the outside.

5. A sludge recycling device according to claim 2, characterized in that: The backwashing mechanism (3) includes a housing two (31) slidably connected to the filter press chamber (11). Sliding openings (311) are provided on both sides of the outer wall of the housing two (31). Ear plates (313) are symmetrically arranged on both sides of the outer surface of the housing two (31). One end of the ear plate (313) extends to the outside of the filter press chamber (11). A positioning slide rod (111) is fixed inside the filter press chamber (11) at a position corresponding to the ear plate (313). The positioning slide rod (111) passes through the ear plate (313) and the ear plate (211) and is connected to... The sliding connection is provided with an elastic element 2 (314) at the bottom of the ear plate 2 (313) and sleeved on the outside of the positioning slide rod (111). A top frame (312) is fixed inside the housing 2 (31) near the top position. A pressure plate 2 (32) is slidably installed inside the housing 2 (31) below the top frame (312). The pressure plate 2 (32) has a docking plate 2 (321) on both sides that extends through the sliding opening 2 (311) to the outside. The docking plate 1 (23) is fixedly connected to the docking plate 2 (321) through the connecting frame (234).

6. A sludge recycling device according to claim 5, characterized in that: A water collection frame (35) is fixed inside the filter press chamber (11). The water collection frame (35) is located above the housing (31). A guide plate (354) extending to the bottom of the feed hopper (16) is fixed on the higher side of the water collection frame (35). A guide surface (351) is provided at the bottom of the inner side of the water collection frame (35). A drain outlet (352) is opened on the lower side of the water collection frame (35). A filter plate (353) is fixed inside the water collection frame (35) above the guide surface (351).

7. A sludge recycling device according to claim 6, characterized in that: The top of the pressure plate (32) is evenly provided with several water inlet holes (322). The bottom of the pressure plate (32) is fixed with a sealing component (34) corresponding to each water inlet hole (322). The sealing component (34) includes a base (341) fixedly connected to the pressure plate (32). A sliding rod (343) is slidably installed in the center of the base (341). A water inlet (342) communicating with the water inlet hole (322) is provided in the base (341). A float plate (344) is fixed at the bottom of the sliding rod (343).

8. A sludge recycling device according to claim 7, characterized in that: The bottom of the second housing (31) is evenly provided with several water outlet holes. Inside the second housing (31), an opening assembly (33) is fixed at the position of each water outlet hole. The opening assembly (33) includes a base (331) fixedly connected to the second housing (31). Inside the base (331), a water inlet (332) is opened to communicate with the water outlet holes. Inside the base (331), a sliding rod (333) is slidably connected. A sealing plate (334) is fixed at the top of the sliding rod (333). A top rod (335) is fixed at the bottom of the sliding rod (333). A frame (315) is fixed at the bottom edge of the second housing (31).

9. The sludge recycling device according to claim 1, characterized in that, The main body (1) has a drive shaft (13) rotatably mounted inside near both ends. The filter screen (131) is sleeved on the outside of the drive shaft (13). The lower end of the main body (1) has a brush wheel (14) rotatably mounted inside below the filter screen (131). The main body (1) has a drive assembly (141) outside. The output end of the drive assembly (141) is connected to the drive shaft (13) and the brush wheel (14) respectively.

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