Sludge recycling filter pressing equipment and method

Abstract

The invention belongs to the field of sludge dewatering, and particularly relates to sludge recycling filter pressing equipment and method.The sludge recycling filter pressing equipment comprises a rack, a dewatering mechanism is arranged above the rack, and the dewatering mechanism comprises a gravity dewatering assembly, a pre-pressing dewatering assembly, a rolling dewatering assembly, an upper filter belt and a lower filter belt; a first cut-off assembly is arranged at the position, close to the pre-pressing dewatering mechanism, of the rack, and a water storage tank with an upward opening is fixedly arranged at the position, close to the lower side, of the rack. The gravity dewatering assembly is arranged above the rack and is matched with the upper filter belt through gravity to automatically filter most sewage. Sewage extruded from the surface of the upper filter belt can be effectively prevented from transversely flowing, and the sewage is forced to longitudinally move along the upper filter belt to be intensively discharged, so that the sewage is prevented from being retained on the upper filter belt to influence the dehydration quality. Meanwhile, sewage on the surface of the upper filter belt and retained in the low-lying position of the continuous V-shaped area can be actively scraped and discharged, and the dehydration efficiency and quality are remarkably improved.

Description

Technical Field

[0001] The invention belongs to the field of sludge dewatering, and in particular relates to a sludge resource filter press device and method. Background Art

[0002] Sludge resource recovery filter press equipment is an environmentally friendly machine used to treat industrial or municipal sludge. It separates water from the sludge through filter pressing technology and recovers usable solid matter (such as organic matter, inorganic particles or heavy metals) to achieve sludge reduction, stabilization and resource utilization.

[0003] The belt filter press is a continuously operating sludge dewatering device widely used in municipal wastewater treatment, chemical, food, mining and other industries. During operation, the sludge is transported by the filter belt and enters the gravity dewatering zone, wedge pre-pressing zone and roller press zone successively for deep dewatering.

[0004] The traditional belt filter press has the following defects when dewatering sludge: 1) Since both the upper and lower filter belts have filter holes, sewage will also flow out from the outside of the upper filter belt during squeezing. This sewage will not only flow longitudinally along the outside of the upper filter belt and fall off the upper filter belt, but also flow laterally along the upper filter belt. In particular, the upper and lower filter belts are guided by guide rollers to move in a wave-like shape. Under the action of gravity, the sewage will move along the length direction of the upper filter belt surface, thereby affecting the efficiency of the upper filter belt in filtering sewage. Especially in the middle and late stages of dewatering, the water content of the sludge itself decreases, and the sewage filtered out by the upper filter belt itself is greatly reduced. At this time, if the sewage on the surface of the upper filter belt is not discharged in time, this part of the sewage may flow back through the filter holes on the surface of the upper filter belt, thereby affecting the quality of sludge dewatering.

[0005] 2) The existing filter press is equipped with a flushing system for flushing the upper and lower filter belts. The existing flushing system mainly consists of two sets of flushing nozzles, which are installed above and below the filter press, facing the upper and lower filter belts respectively. Due to the narrow space below the filter press, not only is it difficult to install the flushing nozzles, but it is also more inconvenient to subsequently inspect and repair the flushing nozzles. Summary of the Invention

[0006] In order to solve the above problems, the present invention provides a sludge resource filter press device and method for solving the problems mentioned in the above background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solutions: The present invention provides a sludge resource recovery filter press apparatus, comprising a frame, a dewatering mechanism disposed above the frame, the dewatering mechanism comprising a gravity dewatering assembly, a pre-pressure dewatering assembly, a roller dewatering assembly, an upper filter belt, and a lower filter belt. A first interception assembly is disposed on the frame near the pre-pressure dewatering mechanism, and a water storage tank with an upward opening is fixedly disposed on the frame near the bottom. The gravity dewatering assembly is disposed above the frame and automatically filters the majority of the wastewater through gravity in conjunction with the upper filter belt. The pre-pressure dewatering assembly is disposed above the frame near the rear, controlling the upper and lower filter belts to gradually press against the sludge for initial dewatering. The roller dewatering assembly comprises a plurality of first and second guide rollers rotatably disposed on the frame, with adjacent first and second guide rollers arranged alternately above and below. The upper and lower filter belts are each sequentially sleeved on the first and second guide rollers, forming a continuous V-shaped region. The second interception assembly is disposed within the V-shaped region. A plurality of water storage slots extending along the length direction are evenly opened on the two circumferential sides of the guide roller. A water receiving frame with an upward opening is movably provided in the guide roller. A drainage pipe 1 connected to the water receiving frame is fixedly provided on the lower side of the water receiving frame. Both ends of the drainage pipe 1 respectively pass through the corresponding ends of the corresponding guide roller 2 and are fixedly connected to the frame through a fixed frame. The guide roller 2 rotates to intercept the sewage retained at the lower end of the V-shaped area through the water storage slot and pours the sewage into the water receiving frame maintained in a stationary state as it rotates.

[0008] According to a favorable embodiment, the upper side of the frame is rotatably provided with an upper active roller and an upper driven roller distributed front and back through a connecting plate 1, and the upper filter belt is movably sleeved on the upper active roller and the upper driven roller; the frame is also rotatably provided with a lower active roller, and two lower driven rollers distributed front and back are rotatably provided near the lower side of the frame through a connecting plate 2, and the lower filter belt is movably sleeved on the surfaces of the lower active roller and the lower driven roller, and any same end of the upper active roller and the lower active roller is connected through a sprocket set for transmission, and a drive motor is provided on the frame, and the output shaft of the drive motor is fixedly connected to the corresponding end of the lower active roller.

[0009] According to a favorable embodiment, the gravity dehydration assembly includes four support plates fixedly arranged on the upper side of the frame and distributed in a rectangular shape, the upper sides of the four support plates are commonly fixedly connected to a U-shaped outer frame, two baffles symmetrically arranged front and back are fixedly arranged inside the outer frame, the bottom of the baffle is fixedly connected to the inner wall of the lower side of the horizontal section of the outer frame, the upper active roller and the upper driven roller are both rotatably connected to the outer frame and are located on the front and rear sides of the outer frame, the upper filter belt moves horizontally through the outer frame, a plurality of material leveling rakes are fixedly arranged inside the outer frame along its length direction, and two L-shaped drainage pipes are fixedly arranged on the left and right side walls of the outer frame and near the lower side.

[0010] According to a favorable embodiment, two guide rollers three and two guide rollers four are rotatably provided inside the outer frame, and the adjacent guide rollers three and four are staggered up and down to form a V-shaped washing area. The upper filter belt is sequentially sleeved on the surfaces of the guide rollers three and four. A water pipe is fixedly provided inside the outer frame above the washing area, and a plurality of washing nozzles inclined downward are fixedly provided on the water pipe. The water pipe and the plurality of washing nozzles constitute a washing assembly.

[0011] According to a favorable embodiment, the pre-pressure dehydration assembly includes an arc-shaped material guide plate fixedly arranged between two rear connecting plates, a wedge-shaped pre-pressure plate is slidably arranged between two rear support plates, the wedge-shaped pre-pressure plate is movably in contact with the upper filter belt, and the wedge-shaped pre-pressure plate is connected to an external tensioning device, and two triangular material guide plates are fixedly arranged on the inside of the outer frame near the rear side with left and right symmetrical positions.

[0012] According to a favorable embodiment, the shut-off assembly includes an inverted U-shaped mounting plate fixedly arranged on the upper side of the frame, a slide groove is provided on the lower side of the horizontal section of the mounting plate, a compression spring is fixedly arranged on the upper inner wall of the slide groove, the lower end of the compression spring is fixedly connected to the shut-off plate, and the shut-off plate is slidably connected to the slide groove.

[0013] According to an advantageous embodiment, strip-shaped overflow holes are provided on both the left and right sides of the water storage tank, and the strip-shaped overflow holes are located above the lower driven roller and below the second guide roller.

[0014] According to a favorable embodiment, the intercepting assembly 2 includes two connecting plates 3 fixedly arranged on the frame and symmetrically arranged on the left and right, and two fixed plates distributed up and down are fixedly arranged between the two corresponding connecting plates 3 on the left and right, and a slide groove 2 is provided on both sides of the fixed plate, and a compression spring 2 is fixedly arranged in the slide groove 2, and an intercepting plate 2 is fixedly arranged at one end of the two compression springs 2 away from each other, and a guide groove is provided on the upper side of the intercepting plate 2 and away from the corresponding fixed plate.

[0015] According to an advantageous embodiment, two left-right symmetrical anti-deflection plates are fixedly provided on the second intercepting plate, and a blanking plate for assisting the mud cake to fall is fixedly provided on the front side of the frame, and the blanking plate is in active contact with the lower filter belt.

[0016] This solution also provides a sludge resource recovery filter pressing method, which is completed using the above-mentioned sludge resource recovery filter pressing equipment, including the following steps: S1, loading, the sludge is fed into the upper filter belt at the position of the gravity dehydration component through an external conveying device.

[0017] S2, dehydration, the upper filter belt drives the sludge to move and pass through the gravity dehydration component area, pre-pressure dehydration component area and roller dehydration component area on the frame in turn for dehydration to form a mud cake.

[0018] S3, unloading, the mud cake is separated from the lower filter belt with the help of the unloading plate and falls to the designated position.

[0019] S4, the upper filter belt and the lower filter belt are cleaned. The upper filter belt separated from the mud cake moves toward the area of the gravity dewatering component and is reset. In the process, it is cleaned by the flushing component. The lower filter belt separated from the mud cake moves toward the water tank under the frame, is immersed in the water inside the water tank for cleaning, and moves toward the position of the pre-pressure flushing component. This cycle is repeated.

[0020] Compared with existing technologies, the sludge resource recovery filter press equipment and method provided by the present invention have the following beneficial effects: 1. By providing interception components 1 and 2, the lateral flow of sewage squeezed from the upper filter belt is effectively prevented, and the sewage is forced to move longitudinally along the upper filter belt for centralized discharge, preventing sewage from being retained on the upper filter belt and affecting dewatering quality. Furthermore, the water storage slot design of guide roller 2 actively scrapes and discharges sewage trapped in low-lying areas of the continuous V-shaped area, significantly improving dewatering efficiency and quality.

[0021] 2. The flushing assembly adopts a V-shaped flushing area design, ensuring that the flushing wastewater flows only vertically and is collected centrally, avoiding lateral splashing and facilitating cleaning operations. For cleaning the lower filter belt, no additional flushing assembly is required. The lower filter belt is immersed in the wastewater in the water storage tank, softening residual mud and reducing filter pore blockage, while also simplifying subsequent maintenance and inspection.

[0022] 3. The anti-deflection plate design of the interception component 2 can restrict the left and right movement of the upper and lower filter belts to avoid the filter belt deviation during the extrusion process. The compression spring 2 applies a supporting force to the upper filter belt to prevent the filter belt from deforming in the V-shaped area (similar to the slope protection effect), ensuring the stability of extrusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a first-view stereoscopic structural diagram of the external structure of the present invention.

[0024] Figure 2 This is a second-view perspective stereoscopic structural diagram of the external whole of the present invention.

[0025] Figure 3 It is a partial cross-sectional three-dimensional structural diagram of the frame of the present invention.

[0026] Figure 4 It is the overall main view and cross-sectional plan view of the present invention.

[0027] Figure 5 It is a partial cross-sectional plan view of the gravity dehydration component of the present invention.

[0028] Figure 6 This is a main sectional plan view of the roller dehydration assembly of the present invention.

[0029] Figure 7 for Figure 6 Enlarged structural diagram of the local structure plane.

[0030] Figure 8 This is an external three-dimensional structural diagram of the intercepting component 2 in the present invention.

[0031] Figure 9 This is a schematic diagram of the connection between the guide roller and the drainage pipe in the present invention.

[0032] Reference numerals in the figure: 1, frame; 2, dewatering mechanism; 21, gravity dewatering assembly; 211, support plate; 212, outer frame; 213, baffle; 214, material leveling rake; 215, drain pipe 2; 22, pre-pressing dewatering assembly; 221, arc-shaped guide plate; 222, wedge-shaped pre-pressing plate; 223, triangular guide plate; 23, roller dewatering assembly; 231, guide roller 1; 232, guide roller 2; 2321, water storage trough; 233, intercepting assembly 2; 2331, connecting plate 3; 2332, fixing plate; 23 33. Compression spring 2; 2334. Interceptor plate 2; 2335. Guide trough; 2336. Anti-deflection plate; 3. Upper filter belt; 4. Lower filter belt; 5. Interceptor assembly 1; 51. Mounting plate; 52. Compression spring 1; 53. Interceptor plate 1; 6. Water storage tank; 61. Strip overflow hole; 7. Water receiving frame; 8. Drain pipe 1; 9. Fixed frame; 10. Upper active roller; 11. Upper driven roller; 12. Lower active roller; 13. Lower driven roller; 14. Guide roller 3; 15. Guide roller 4; 16. Flushing assembly; 17. Blanking plate. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1 -Attached Figure 9 This application is described in further detail.

[0034] Please refer to Figure 1 and Figure 2 A sludge resource recovery filter press includes a frame 1, with a dewatering mechanism 2 disposed above the frame 1. The dewatering mechanism 2 includes a gravity dewatering assembly 21, a pre-pressure dewatering assembly 22, a roller dewatering assembly 23, an upper filter belt 3, and a lower filter belt 4. A water storage tank 6, with an upward opening, is fixedly disposed on the frame 1 near its lower side.

[0035] See Figure 1 and Figure 4The upper side of the frame 1 is provided with an upper active roller 10 and an upper driven roller 11 that are distributed front and back through a connecting plate 1, and the upper filter belt 3 is movably mounted on the upper active roller 10 and the upper driven roller 11; the frame 1 is also provided with a lower active roller 12 that is rotatable, and two lower driven rollers 13 that are distributed front and back are rotatable on the frame 1 near the lower side through a connecting plate 2, and the lower filter belt 4 is movably mounted on the surface of the lower active roller 12 and the lower driven roller 13. Any common end of the upper active roller 10 and the lower active roller 12 are connected by a sprocket group. A drive motor is provided on the frame 1, and the output shaft of the drive motor is fixedly connected to the corresponding end of the lower active roller 12. The drive motor cooperates with the sprocket group to simultaneously drive the upper active roller 10 and the lower active roller 12. The upper active roller 10 drives the upper filter belt 3, and the lower active roller 12 drives the lower filter belt 4, ensuring that the upper filter belt 3 and the lower filter belt 4 move synchronously.

[0036] See Figure 1 、 Figure 3 and Figure 4 The gravity dewatering assembly 21 includes four support plates 211 fixedly arranged on the upper side of the frame 1 and distributed in a rectangular shape. The upper sides of the four support plates 211 are fixedly connected to a U-shaped outer frame 212. Two baffles 213 symmetrically arranged front and back are fixedly provided inside the outer frame 212. The bottom of the baffle 213 is fixedly connected to the inner wall of the lower side of the horizontal section of the outer frame 212. The upper active roller 10 and the upper driven roller 11 are both rotatably connected to the outer frame 212 and are located on the front and rear sides of the outer frame 212. The upper filter belt 3 moves horizontally through the outer frame 212. A plurality of material leveling rakes 214 are fixedly provided inside the outer frame 212 along its length direction. The left and right side walls of the outer frame 212 and near the lower side are fixedly provided with an L-shaped drainage pipe 215 that passes through the interior thereof. The external sludge is transported from front to back through the outer frame 212 by the upper filter belt 3. In the process of passing through the outer frame 212, the moisture in the sludge passes through the filter holes on the surface of the upper filter belt 3 under the action of gravity and falls onto the lower inner wall of the outer frame 212. The two baffles 213 and the inner wall of the outer frame 212 form a water receiving trough with an upward opening, which can collect sewage and discharge it through the drain pipe 215 into the water storage tank 6.

[0037] See 1. Figure 3 and Figure 4 The pre-pressing and dehydration assembly 22 includes an arc-shaped material guide plate 221 fixedly arranged between the two rear connecting plates, a wedge-shaped pre-pressing plate 222 is slidably arranged between the two rear support plates 211, the wedge-shaped pre-pressing plate 222 is in active contact with the upper filter belt 3, and the wedge-shaped pre-pressing plate 222 is connected to an external tensioning device (not shown in the figure, specifically a hydraulic tensioning device), and two triangular material guide plates 223 symmetrical on the left and right are fixedly arranged near the rear side of the outer frame 212.

[0038] During operation, to prevent the sludge from excessively moving toward the edges of the upper filter belt 3 and the lower filter belt 4 due to the squeezing force during initial squeezing, which could cause sludge leakage, an external tensioning device is first used to drive the wedge-shaped pre-compression plate 222 to tension the upper filter belt 3. After being dehydrated by gravity, the sludge is guided by the triangular guide plate 223, where it shrinks and approaches the middle, then slides along the upper filter belt 3 and the arc-shaped guide plate 221, ultimately moving into the gradually narrowing pre-compression area formed between the upper filter belt 3 and the lower filter belt 4. At this point, the sludge is mostly located in the middle between the upper filter belt 3 and the lower filter belt 4. The gradually narrowing upper filter belt 3 and the lower filter belt 4 allow for initial squeezing to further dehydrate the sludge, reducing its fluidity.

[0039] See Figure 1 、 Figure 4 and Figure 6 A cutoff assembly 5 is disposed on the frame 1 near the pre-pressing and dewatering mechanism 2. This cutoff assembly 5 comprises an inverted U-shaped mounting plate 51 fixedly mounted on the upper side of the frame 1. A chute 1 is defined on the lower side of the horizontal section of the mounting plate 51. A compression spring 52 is fixedly mounted on the upper inner wall of the chute 1. The lower end of the compression spring 52 is fixedly connected to a cutoff plate 53, which is slidably connected to the chute 1. The cutoff plate 53 is constantly in contact with the upper filter belt 3 via the compression spring 52. When the upper filter belt 3, under the action of the wedge-shaped pre-pressing plate 222, cooperates with the lower filter belt 4 to pre-press and dewater the sludge, the sewage flowing from the surface of the upper filter belt 3 is intercepted by the cutoff plate 53. While preventing lateral movement, the cutoff plate 53 forces the sewage to flow longitudinally along the upper filter belt 3 and into the water storage tank 6 below.

[0040] See Figure 2 and Figure 4 The roller dewatering assembly 23 includes multiple guide rollers 1 231 and multiple guide rollers 232 rotatably mounted on the frame 1. Adjacent guide rollers 1 231 and 232 are staggered vertically. The upper filter belt 3 and the lower filter belt 4 are sequentially mounted on the guide rollers 1 231 and 232, forming a continuous V-shaped region. The interception assembly 233 is located within the V-shaped region. The upper filter belt 3 and the lower filter belt 4 jointly squeeze the sludge and drive it along the guide rollers 1 231 and 232, continuously squeezing and dewatering the sludge.

[0041] See Figure 4 、 Figure 6 and Figure 8The second interception assembly 233 includes two symmetrical connecting plates 2331 fixed to the frame 1. Two fixed plates 2332, located vertically above and below, are fixedly mounted between the two corresponding connecting plates 2331. Two slide slots are defined on both sides of the fixed plates 2332. A second compression spring 2333 is fixedly mounted within the second slide slots. A second interception plate 2334 is fixedly mounted on the ends of the two compression springs 2333 that are spaced apart from each other. A guide groove 2335 is defined above the second interception plate 2334, spaced apart from the corresponding fixing plate 2332. Two symmetrical anti-deflection plates 2336 are fixedly mounted on the second interception plate 2334.

[0042] During operation, to prevent the sewage in the V-shaped area from following the movement of the upper filter belt 3, the second interceptor plate 2334 is constantly pressed against the surface of the upper filter belt 3 by the second compression spring 2333. Most of the sewage squeezed out of the surface of the upper filter belt 3 is intercepted by the second interceptor plate 2334 and diverted into the guide groove 2335. The sewage then moves along the guide groove 2335 toward the left and right edges of the upper filter belt 3 and is carried out into the water storage tank 6. Simultaneously, the second interceptor plate 2334 exerts pressure and support on the upper filter belt 3 in the V-shaped area by the second compression spring 2333, thus preventing deformation of the upper filter belt 3 (similar to a slope protection effect). Meanwhile, the anti-deflection plate 2336 is pressed against the left and right edges of the upper and lower filter belts 3 and 4, preventing them from interlacing and deviating during squeezing.

[0043] See Figure 1 、 Figure 7 and Figure 9 A plurality of water storage slots 2321 extending along the length direction are evenly opened on the circumference of the guide roller 232. A water receiving frame 7 with an upward opening is movably provided in the guide roller 232. A drainage pipe 8 connected to the water receiving frame 7 is fixedly provided on the lower side of the water receiving frame 7. The two ends of the drainage pipe 8 respectively pass through the corresponding ends of the corresponding guide roller 232 and are fixedly connected to the frame 1 through the fixing frame 9. The end of the drainage pipe 8 is fixedly passed through the fixing frame 9 and is exposed to the outside. During the rotation of the guide roller 232, the sewage retained at the lower end of the V-shaped area is intercepted through the water storage slot 2321 and poured into the water receiving frame 7 which remains stationary as it rotates.

[0044] During operation, to prevent sewage from accumulating on the surface of the upper filter belt 3 at the lowest point of the V-shaped area and affecting dewatering, the upper filter belt 3 and the lower filter belt 4 move along the guide roller 232, driving the guide roller 232 to rotate. The guide roller 232 rotates at the low-lying area of the upper filter belt 3, and the water storage slot 2321 on the surface of the guide roller 232 scrapes the sewage at this location and enters the water storage slot 2321. As the guide roller 232 rotates, the water storage slot 2321 gradually tilts and eventually tilts downward, causing the sewage to pour out of the water storage slot 2321 and fall into the water receiving frame 7 inside the guide roller 232. The sewage then flows into the drain pipe 1 8, exits the guide roller 232 through the two ports of the drain pipe 1, and finally falls into the water storage tank 6 below. This improves the sewage discharge rate of the upper filter belt 3 in the low-lying area, thereby improving the sludge dewatering quality.

[0045] See Figure 1 、 Figure 4 and Figure 5 Two guide rollers 3 14 and two guide rollers 4 15 are rotatably disposed within the outer frame 212. Adjacent guide rollers 3 14 and 4 15 are staggered vertically to form a V-shaped flushing area. The upper filter belt 3 is sequentially sleeved on the surfaces of the guide rollers 3 14 and 4 15. A water pipe is fixedly disposed within the outer frame 212 above the flushing area. A plurality of downwardly inclined flushing nozzles are fixedly disposed on the water pipe. The water pipe and the plurality of flushing nozzles constitute a flushing assembly 16. When the flushing nozzles flush the upper filter belt 3, due to the V-shaped flushing area, the generated sewage does not move horizontally, but only moves horizontally and vertically to fall into the water storage tank 6, facilitating cleaning of the upper filter belt 3.

[0046] See Figure 2 and Figure 4 A discharge plate 17 is fixed to the front of the frame 1 to assist in the removal of the mud cake. This plate 17 flexibly contacts the lower filter belt 4. Strip overflow holes 61 are provided on both the left and right sides of the water tank 6. These overflow holes 61 are located above the lower driven roller 13 and below the second guide roller 232. Once the water level reaches these overflow holes 61, it automatically drains. This ensures that the wastewater in the water tank 6 remains submerged in the lower filter belt 4 without affecting the upper and lower filter belts 3 and 4, which are operating on the second guide roller 232.

[0047] During operation, after the upper filter belt 3 and the lower filter belt 4 are removed from the roller dewatering assembly 23, the lower filter belt 4 and the upper filter belt 3 are gradually separated. The mud cake on the lower filter belt 4 is scraped off by the discharge plate 17 and then moves along the discharge plate 17 to the designated position. The lower filter belt 4 moves along the lower driven roller 13 inside the water storage tank 6. The lower filter belt 4 can be immersed in the sewage inside the water storage tank 6, so that the hard and relatively dry mud residue that may be stuck on the upper filter belt 3 is softened and falls off after being soaked in the sewage.

[0048] This solution also provides a sludge resource recovery filter press method, which is completed by the above-mentioned filter press equipment, including the following steps: S1, loading, the sludge is fed into the upper filter belt 3 at the position of the gravity dehydration component 21 through an external sludge pump.

[0049] S2, dehydration, the upper filter belt 3 drives the sludge to move and pass through the gravity dehydration component 21 area, the pre-pressure dehydration component 22 area and the roller dehydration component 23 area on the frame 1 in turn to be dehydrated to form a mud cake, and at the same time cooperates with the interception component 1 5 and the interception component 2 233 to prevent the sewage squeezed out of the surface of the upper filter belt 3 from moving with the upper filter belt 3.

[0050] S3, unloading, the mud cake is separated from the lower filter belt 4 with the assistance of the unloading plate 17 and falls to the designated position.

[0051] S4, the upper filter belt 3 and the lower filter belt 4 are cleaned, the upper filter belt 3 separated from the mud cake moves toward the area of the gravity dehydration component 21 and is reset, and is cleaned by the flushing component 16 during this process, and the lower filter belt 4 separated from the mud cake moves toward the water tank 6 under the frame 1, and is immersed in the water inside the water tank 6 for cleaning and moves toward the position of the pre-pressure dehydration component 22, and the cycle is repeated.

[0052] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A sludge resource filter press device, comprising a frame, a dehydration mechanism is arranged above the frame, and the dehydration mechanism includes a gravity dehydration component, a pre-pressure dehydration component, a roller dehydration component, an upper filter belt and a lower filter belt, characterized in that: A cut-off assembly 1 is provided on the frame near the pre-pressing and dehydrating mechanism, and a water storage tank with an upward opening is fixedly provided on the frame near the lower side; The gravity dewatering assembly is arranged above the frame and automatically filters most of the sewage by gravity in conjunction with the upper filter belt; The pre-pressing and dehydrating assembly is arranged above the frame and near the rear side, and controls the upper filter belt and the lower filter belt to gradually fit and squeeze the sludge for preliminary squeezing and dehydration; The roller dehydration assembly includes a plurality of guide rollers 1 and 2 that are rotatably mounted on a frame, wherein adjacent guide rollers 1 and 2 are staggered in an upper and lower arrangement, and the upper filter belt and the lower filter belt are sequentially sleeved on the guide rollers 1 and 2 and together form a continuous V-shaped area, wherein the interception assembly 2 is disposed within the V-shaped area; A plurality of water storage slots extending along the length direction are evenly opened on the two circumferential sides of the guide roller. A water receiving frame with an upward opening is movably provided in the guide roller. A drainage pipe 1 connected to the water receiving frame is fixedly provided on the lower side of the water receiving frame. Both ends of the drainage pipe 1 respectively pass through the corresponding ends of the corresponding guide roller 2 and are fixedly connected to the frame through a fixed frame. The guide roller 2 rotates to intercept the sewage retained at the lower end of the V-shaped area through the water storage slot and pours the sewage into the water receiving frame maintained in a stationary state as it rotates.

2. The sludge resource filter press equipment according to claim 1, characterized in that: The upper side of the frame is rotatably provided with an upper active roller and an upper driven roller distributed front and back through a connecting plate 1, and the upper filter belt is movably sleeved on the upper active roller and the upper driven roller; the frame is also rotatably provided with a lower active roller, and two lower driven rollers distributed front and back are rotatably provided on the frame near the lower side through a connecting plate 2, and the lower filter belt is movably sleeved on the surface of the lower active roller and the lower driven roller, and any same end of the upper active roller and the lower active roller is connected through a sprocket set for transmission, and a driving motor is provided on the frame, and the output shaft of the driving motor is fixedly connected to the corresponding end of the lower active roller.

3. The sludge resource filter press equipment according to claim 2, characterized in that: The gravity dewatering assembly includes four support plates fixedly arranged on the upper side of the frame and distributed in a rectangular shape, and the upper sides of the four support plates are commonly fixedly connected to a U-shaped outer frame, and two baffles symmetrically arranged front and back are fixedly arranged inside the outer frame, and the bottom of the baffle is fixedly connected to the inner wall of the lower side of the horizontal section of the outer frame, and the upper active roller and the upper driven roller are both rotatably connected to the outer frame and are located at the front and rear sides of the outer frame, and the upper filter belt moves horizontally through the outer frame, and a plurality of material leveling rakes are fixedly arranged inside the outer frame along its length direction, and two L-shaped drainage pipes are fixedly arranged on the left and right side walls of the outer frame and near the lower side thereof.

4. The sludge resource filter press equipment according to claim 3, characterized in that: Two guide rollers three and two guide rollers four are rotatably provided inside the outer frame. Adjacent guide rollers three and four are staggered up and down to form a V-shaped washing area. The upper filter belt is sequentially sleeved on the surface of guide rollers three and four. A water pipe is fixedly provided inside the outer frame above the washing area. A plurality of washing nozzles tilted downward are fixedly provided on the water pipe. The water pipe and the plurality of washing nozzles constitute a washing assembly.

5. The sludge resource filter press equipment according to claim 3, characterized in that: The pre-pressing and dehydration assembly includes an arc-shaped material guide plate fixedly arranged between two connecting plates on the rear side, a wedge-shaped pre-pressing plate slidingly arranged between two supporting plates on the rear side, the wedge-shaped pre-pressing plate movably contacts the upper filter belt, and the wedge-shaped pre-pressing plate is connected to an external tensioning device, and two triangular material guide plates symmetrical on the left and right are fixedly arranged near the rear side of the inner part of the outer frame.

6. The sludge resource filter press equipment according to claim 1, characterized in that: The intercepting assembly includes an inverted U-shaped mounting plate fixedly arranged on the upper side of the frame, a slide groove is provided on the lower side of the horizontal section of the mounting plate, a compression spring is fixedly arranged on the upper inner wall of the slide groove, the lower end of the compression spring is fixedly connected to the intercepting plate, and the intercepting plate is slidably connected to the slide groove.

7. The sludge resource filter press equipment according to claim 1, characterized in that: Strip overflow holes are provided on the left and right sides of the water storage tank, and the strip overflow holes are located above the lower driven roller and below the second guide roller.

8. The sludge resource filter press equipment according to claim 1, characterized in that: The intercepting assembly 2 includes two connecting plates 3 fixedly arranged on the frame and symmetrically arranged on the left and right. Two fixed plates distributed up and down are fixedly arranged between the two corresponding connecting plates 3 on the left and right. A slide groove 2 is provided on both sides of the fixed plate. A compression spring 2 is fixedly arranged in the slide groove 2. An intercepting plate 2 is fixedly arranged on one end of the two compression springs 2 away from each other. A guide groove is provided on the upper side of the intercepting plate 2 and away from the corresponding fixed plate.

9. The sludge resource filter press equipment according to claim 8, characterized in that: Two anti-deflection plates are fixedly provided on the second intercepting plate and are symmetrical with respect to the left and right. A blanking plate for assisting the mud cake to fall is fixedly provided on the front side of the frame, and the blanking plate is in active contact with the lower filter belt.

10. A sludge resource filter press method, characterized in that: The sludge resource filter press equipment according to claim 4 is used to complete the process, comprising the following steps: S1, loading, the sludge is fed into the upper filter belt at the gravity dewatering component through an external conveying device; S2, dehydration, the upper filter belt drives the sludge to move and pass through the gravity dehydration component area, pre-pressure dehydration component area and roller dehydration component area on the frame in turn to be dehydrated to form a mud cake; S3, unloading, the mud cake is separated from the lower filter belt with the help of the unloading plate and falls to the designated position; S4, the upper filter belt and the lower filter belt are cleaned. The upper filter belt separated from the mud cake moves toward the area of the gravity dewatering component and is reset. In the process, it is cleaned by the flushing component. The lower filter belt separated from the mud cake moves toward the water tank under the frame, is immersed in the water inside the water tank for cleaning, and moves toward the position of the pre-pressure flushing component. This cycle is repeated.

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