Anti-blocking type spiral dewatering machine for sludge treatment
By introducing a flocculation device, a water inlet mechanism, and a cleaning device into the screw press dewatering machine, the problems of uneven flocculation and clogging are solved, achieving efficient, stable, and automated operation of sludge treatment and improving the anti-clogging performance of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- INNER MONGOLIA JINHE ENVIRONMENTAL PROTECTION TECH CO L
- Filing Date
- 2026-04-10
- Publication Date
- 2026-06-19
AI Technical Summary
Existing screw press dewatering machines suffer from uneven mixing of wastewater and flocculant during the flocculation stage, leading to sludge clumping and blockage. The water inflow cannot be dynamically adjusted, the cleaning range is limited, and the equipment is prone to malfunction due to blockage, affecting its anti-clogging performance.
The design includes a flocculation device, a water inlet mechanism, and a cleaning device. The flocculation device achieves thorough mixing of the agent and sludge through a spreading disc, a dispersing plate, and an arc-shaped mixing plate. The water inlet mechanism automatically adjusts the water inflow. The cleaning device uses high-pressure water spray and brushes for coordinated cleaning, combined with an inclined filter plate to automatically filter impurities and reduce the risk of clogging.
It improves the equipment's anti-clogging capability and operational stability, reduces the workload of manual maintenance, ensures continuous and smooth operation of the equipment, and reduces the probability of clogging and the risk of equipment failure.
Smart Images
Figure CN121990749B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of screw press dewatering technology, and in particular to an anti-clogging screw press dewatering machine for sludge treatment. Background Technology
[0002] In the fields of wastewater treatment and solid-liquid separation, sludge, as a major byproduct of wastewater treatment, contains a large amount of organic matter, heavy metals, and pathogens. Its effective treatment is a key link in achieving environmental safety and resource recycling. The core goal of sludge treatment is to achieve reduction, stabilization, harmlessness, and resource recovery. Dewatering, as the first step in sludge reduction, directly determines the efficiency and cost of subsequent sludge transportation and disposal. The screw press dewatering machine, as a core sludge dewatering equipment with a rapidly increasing popularity in recent years, has been widely used in municipal wastewater treatment, food processing, aquaculture, printing and dyeing, pharmaceuticals, petrochemicals, and other fields due to its advantages such as compact structure, low operating cost, high degree of automation, and low energy consumption. It is especially suitable for small and medium-sized wastewater treatment scenarios and renovation and expansion projects with limited land.
[0003] Chinese patent CN120192072B discloses a screw press sludge dewatering machine. Through the cooperation between the pressure device, transmission device and stirring device, the lifting height of the linkage block can be changed by the gravity of the pressure plate, thereby automatically adjusting the rotation speed of multiple second stirring elements. On the other hand, through the cooperation between the limiting device and the pressure device, the three plates can be limited by the clamping plate, thereby preventing the linkage block from being located between the two driven gears, thus preventing the second stirring elements from stopping.
[0004] The above-mentioned equipment can automatically adjust the stirring speed according to the pressure. However, in the flocculation stage, the sludge may clump together due to uneven mixing of wastewater and flocculant. These large clumps can easily cause blockages in the dewatering stage, affecting the operation of the equipment. Furthermore, the water inflow cannot be dynamically adjusted according to the sludge blockage. When the flocculated sludge water flows into the inlet structure and causes blockage, the pressure in the inlet area will continue to increase, which can easily lead to aggravated blockage and equipment failure. When cleaning the ring plate after each dewatering, it may be difficult to remove stubborn sludge fragments and flocculents in the gaps of the ring plate due to dead corners and other factors. The cleaning range is limited. If they accumulate for a long time, they will block the gaps of the ring plate, increasing the probability of blockage in the next operation. The cleaned sludge fragments are prone to fiber adhesion to the wall, which can easily lead to filter plate blockage over time, causing poor operation of the water collection tank and affecting the overall anti-clogging performance of the equipment. Summary of the Invention
[0005] To solve the above technical problems, the present invention provides the following technical solution: A clogging-resistant screw press dewatering machine for sludge treatment includes a connecting frame, a machine frame fixedly connected to the top of the connecting frame, water collection tanks fixedly connected to both sides of the inner wall of the machine frame, a screw press dewatering device fixedly connected to the top of the water collection tank, the bottom of the screw press dewatering device fixedly connected to the top of the machine frame, a sludge collection tank fixedly connected to the left side of the machine frame via a bracket, a fixed frame fixedly connected to the side of the connecting frame away from the sludge collection tank via a bracket, a flocculation device fixedly connected to the top of the fixed frame, a control box fixedly connected to the side of the flocculation device, an overflow prevention box fixedly connected to the side of the flocculation device away from the machine frame, and an overflow prevention box with a discharge port of the overflow prevention box. The screw press dewatering device, connected to a flocculation device and used to prevent overflow during flocculation, includes a dewatering tank. The rear side of the inner wall of the dewatering tank has symmetrically arranged guide grooves. A sludge discharge tank is connected to the left side of the dewatering tank. A dewatering motor is fixedly connected to the left side of the sludge discharge tank. The drive shaft of the dewatering motor passes through the sludge discharge tank and is fixedly connected to a dewatering assembly. Filtering assemblies are fixedly connected to both sides of the inner wall of the dewatering tank, and the filter assemblies are sleeved outside the dewatering assembly. A cleaning device is fixedly connected to the portion of the inner wall of the dewatering tank above the dewatering assembly. A water inlet mechanism is fixedly connected to the side of the dewatering tank away from the sludge discharge tank. The bottom of the dewatering tank is connected to a water collection tank, and the sludge outlet of the sludge discharge tank is connected to the sludge collection tank.
[0006] Preferably, the flocculation device includes a flocculation box, a support plate fixedly connected to the top of the flocculation box, a flocculation motor fixedly connected to the top of the support plate, a drive shaft of the flocculation motor passing through the top of the support plate and fixedly connected to a drive gear, a driven gear symmetrically rotatably connected to the bottom of the support plate, the side of the driven gear meshing with the side of the drive gear, a rotating shaft fixedly connected to the bottom of both the drive gear and the driven gear, an arc-shaped guide plate uniformly fixedly connected to the bottom of the side of the rotating shaft, the arc-shaped structure of the arc-shaped guide plate gradually expanding from top to bottom, an arc-shaped mixing plate uniformly fixedly connected to the part of the side of the rotating shaft above the arc-shaped guide plate, two sets of arc-shaped mixing plates symmetrically arranged on the rotating shaft, a dispersing plate uniformly fixedly connected to the part of the side of the rotating shaft above the arc-shaped mixing plate, the dispersing plate on the rotating shaft at the bottom of the drive gear and the dispersing plate on the rotating shaft at the bottom of the driven gear being staggered, and a water outlet pipe uniformly connected to the top of the side of the flocculation box away from the overflow box.
[0007] Preferably, a dosing pipe is fixedly connected to the rear side of the flocculation box via a bracket. The dosing port of the dosing pipe is connected to a connecting pipe. A spraying pipe is symmetrically connected to the side of the connecting pipe away from the dosing pipe. Spraying holes are evenly distributed at the bottom of the spraying pipe. A spreading disc is fixedly connected to the portion of the rotating shaft below the spraying pipe. An arc-shaped guide groove is evenly distributed at the top of the spreading disc. The flocculation box is fixedly connected to the top of the fixed frame. The side of the flocculation box is fixedly connected to the control box. The bottom of the side of the flocculation box is connected to an overflow prevention device. The outlet of the tank is connected, and the end of the outlet pipe away from the flocculation tank is connected to the water inlet mechanism. The connecting pipe is fixedly connected to the bottom of the support plate through the bracket. The sludge water enters the flocculation tank through the overflow prevention control. The agent is sprayed onto the rotating spreading plate through the spray hole and spread evenly along the arc-shaped guide groove. The rotating shaft drives the staggered dispersing plate to break up the sludge clumps. The arc-shaped mixing plate forms an upward and downward convection stirring. The gradually expanding arc-shaped guide plate guides the water flow upward, so that the agent and sludge are fully mixed and reacted, ensuring the flocculation effect, reducing the subsequent dewatering load, and reducing clogging.
[0008] Preferably, the water inlet mechanism includes a connecting cylinder, the top of which is connected to a water inlet cylinder. An annular sleeve is fixedly connected to the right side of the inner wall of the connecting cylinder. An adjusting plate is slidably connected to the inner wall of the annular sleeve. A first spring is uniformly fixedly connected to the right side of the inner wall of the annular sleeve. One end of the first spring is fixedly connected to the adjusting plate. A sealing plate is fixedly connected to the side of the adjusting plate away from the first spring. An adjusting rod is uniformly fixedly connected to the portion of the adjusting plate away from the sealing plate and located on the side of the first spring. The end of the adjusting rod away from the adjusting plate passes through the connecting cylinder and is fixedly connected to a connecting circular plate. Connecting frames are fixedly connected to both sides of the connecting circular plate. A sliding plate passes through and is slidably connected to the side of the water inlet cylinder away from the connecting circular plate. The side of the sliding plate away from the water inlet cylinder is fixedly connected to the connecting frame via a bracket.
[0009] Preferably, the left side of the connecting cylinder passes through the dewatering tank and is fixedly connected to it. The right side of the inner wall of the connecting cylinder is rotatably connected to the spiral shaft of the dewatering component. The side of the sealing plate passes through and is rotatably connected to the spiral shaft of the dewatering component. The left side of the adjusting plate passes through and is rotatably connected to the spiral shaft of the dewatering component. The top of the inlet cylinder is connected to the outlet pipe. The flocculated sludge water flows into the inlet cylinder. When the sludge clogs the cylinder, the pressure inside increases, squeezing the adjusting plate and causing the sliding plate to reduce the inlet cross-sectional area, thereby reducing the inlet water volume and preventing clogging. After the clogging is resolved, the spring pushes the adjusting plate to reset, restoring the normal inlet water volume. This achieves automatic adaptation and adjustment, improving equipment stability and anti-clogging capability, without the need for manual adjustment.
[0010] Preferably, the cleaning device includes a support frame, with water spray pipes rotatably connected to the top of the support frame via brackets. Nozzles are evenly connected to the bottom of the water spray pipes. One end of the water spray pipe passes through the dehydration tank and is connected to an inlet pipe. A reciprocating gear is fixedly connected to the end of the water spray pipe away from the inlet pipe. A first toothed rod meshes with the bottom of the reciprocating gear. One end of the first toothed rod passes through the dehydration tank and is fixedly connected to the movable end of an electric telescopic rod via a bracket. A gear ring is fitted and fixedly connected to the water spray pipe. A second toothed rod meshes with the side of the gear ring. A movable frame is fixedly connected to the bottom of the second toothed rod. A cleaning frame is evenly fixedly connected to the top of the movable frame. Cleaning brushes are evenly fixedly connected to the inner wall of the cleaning frame. The bottom of the cleaning frame... A symmetrically fixed touch plate is connected to the cleaning frame. An elastic touch rod is fixedly connected to the end of the touch plate away from the cleaning frame. The support frame is fixedly connected to both sides of the inner wall of the dehydration tank. One end of the first toothed rod passes through one side of the inner wall of the dehydration tank and is slidably connected to the dehydration tank. The fixed end of the electric telescopic rod is fixedly connected to the dehydration tank through a bracket. The side of the second toothed rod away from the toothed ring is slidably connected to the inner wall of the guide groove through a slider. After dehydration, high-pressure clean water is flushed through the nozzle of the spray pipe to clean the gaps of the ring plate. The electric telescopic rod drives the spray pipe to swing back and forth to expand the cleaning coverage area. At the same time, the spray pipe drives the cleaning brush to move back and forth to brush away stubborn sludge. The high-pressure water spray and the brush work together to avoid clogging of the gaps of the ring plate, reduce the amount of manual maintenance, and improve the anti-clogging ability.
[0011] Preferably, a discharge port is provided on the right side of the water collection tank, and a collection box is fixedly connected to the part of the right side of the water collection tank below the discharge port. Inclined filter plates are slidably connected to both sides of the inner wall of the water collection tank. The filter openings on the inclined filter plates have rounded corners. A second spring is fixedly connected to the bottom diagonal of each inclined filter plate. A fixing plate is fixedly connected to the bottom of the second spring. Two sets of fixing plates are symmetrically fixed to both sides of the inner wall of the water collection tank. This can filter sewage and impurities in the water collection tank. Water passes through the filter plates and is discharged and recycled. Sludge and debris slide into the collection box along the inclined surface. The cleaning frame drives the trigger rod to intermittently press down on the filter plates. In conjunction with the springs, the filter plates vibrate up and down, accelerating the sliding of debris, avoiding filter plate blockage, improving filtration efficiency, and reducing manual maintenance costs.
[0012] The beneficial effects of the technical solution provided by this invention include:
[0013] 1. This anti-clogging screw press dewatering machine for sludge treatment is equipped with a flocculation device. Through the multi-stage synergistic action of the spreading disc, dispersing plate, and arc-shaped mixing plate, it achieves thorough mixing and efficient flocculation of flocculant and sludge water, reducing the risk of clogging from the source and improving the equipment's anti-clogging capability. The agent is evenly sprayed onto the rotating spreading disc through the spray holes and spreads outwards to avoid local accumulation. The dispersing plate thoroughly breaks up clumps of sludge, ensuring full contact between the agent and the sludge. The arc-shaped mixing plate creates upward convection mixing, improving the mixing uniformity. The bottom gradually expanding guide plate guides the water flow upwards, preventing the accumulation of lower-layer sludge, reducing the risk of dewatering clogging, and improving the overall anti-clogging capability and operational stability of the equipment.
[0014] 2. This anti-clogging screw press dewatering machine for sludge treatment is equipped with a water inlet mechanism and has an automatic adaptive water inlet adjustment function. It can automatically adjust the water inlet volume according to the sludge clogging situation, thereby improving the equipment's anti-clogging capability and operational stability. After the flocculated sludge water flows into the water inlet cylinder, if clogging occurs, the pressure inside the water inlet cylinder increases, and the squeezing adjustment plate, in conjunction with the sliding plate, reduces the water inlet cross-sectional area, thereby reducing the amount of sludge entering the machine and preventing further clogging and equipment failure. After the clogging is resolved, the pressure drops, and all components automatically reset to restore the normal water inlet volume. This eliminates the need for frequent manual adjustments, ensuring continuous and smooth dewatering operations and effectively improving the equipment's anti-clogging capability.
[0015] 3. This anti-clogging screw press dewatering machine for sludge treatment is equipped with a cleaning device. Through the combined action of high-pressure water spray and brush cleaning, it effectively removes residual impurities from the gaps between the screw press rings, reducing the risk of clogging and improving the equipment's anti-clogging capability. After dewatering, sludge fragments and flocculents easily remain in the gaps between the rings. During cleaning, high-pressure water washes the gaps at high speed, and the water spray pipe swings back and forth to expand the cleaning range and reduce cleaning dead spots. At the same time, the cleaning brush adheres to the gaps between the rings to remove stubborn sludge, enhancing the cleaning effect, keeping the gaps between the rings unobstructed, preventing sludge from drying and clogging, reducing the probability of clogging in the next operation, and eliminating the need for manual disassembly of the equipment for cleaning, thus improving the equipment's anti-clogging performance.
[0016] 4. This anti-clogging screw press dewatering machine for sludge treatment is equipped with inclined filter plates and an elastic vibration structure. It can efficiently filter sewage and automatically discharge impurities, avoiding filter plate clogging and further improving the overall anti-clogging capability of the equipment. After sewage and impurities fall into the collection tank, they are filtered by the inclined filter plates. Sludge fragments slide down the inclined surface for collection. The rounded corners of the filter openings prevent fibers from sticking to the walls. The touch plate intermittently presses down on the filter plates, causing them to vibrate up and down under the action of springs, accelerating the sliding of impurities, preventing filter plate clogging, improving filtration efficiency, eliminating the need for manual cleaning of the collection tank, reducing maintenance workload, ensuring smooth operation of the collection tank, and improving the anti-clogging capability and continuous operation of the equipment. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the anti-clogging screw press dewatering machine for sludge treatment according to the present invention;
[0018] Figure 2 This is a schematic diagram of the structure of the stacked screw dehydration device of the present invention;
[0019] Figure 3 This is a schematic diagram of the connection structure of the flocculation device of the present invention;
[0020] Figure 4 This is a schematic diagram of the internal connection structure of the flocculation box of the present invention;
[0021] Figure 5 This is a schematic diagram of the bottom structure of the support plate of the present invention;
[0022] Figure 6 This is a schematic diagram of the connection structure of the water inlet mechanism of the present invention;
[0023] Figure 7 This is a schematic diagram of the internal structure of the water inlet mechanism of the present invention;
[0024] Figure 8 This is a schematic diagram of the internal connection structure of the annular sleeve of the present invention;
[0025] Figure 9 This is a schematic diagram of the connection structure of the cleaning device of the present invention;
[0026] Figure 10 This is a schematic diagram of the internal connection structure between the cleaning device and the water collection tank of the present invention.
[0027] In the diagram: 1. Connecting frame; 2. Frame; 3. Water collection tank; 4. Screw press dewatering device; 5. Sludge collection tank; 6. Fixed frame; 7. Flocculation device; 8. Control box; 9. Overflow prevention box; 10. Discharge port; 11. Sludge collection tank; 12. Inclined filter plate; 13. Second spring; 14. Fixed plate; 41. Dewatering tank; 42. Guide chute; 43. Sludge discharge tank; 44. Dewatering motor; 45. Dewatering assembly; 46. Filter assembly; 47. Cleaning device; 48. Water inlet mechanism; 71. Flocculation tank; 72. Support plate; 73. Flocculation motor; 74. Drive gear; 75. Driven gear; 76. Rotating shaft; 77. Arc-shaped guide plate; 78. Arc-shaped mixing plate; 79. Dispersing plate; 710. Water outlet pipe; 711. Chemical dosing pipe; 712. Connecting pipe; 713. Spraying pipe; 714. Spraying hole; 715. Spreading disc; 716. Arc-shaped guide trough; 481. Connecting cylinder; 482. Water inlet cylinder; 483. Annular sleeve; 484. Adjusting plate; 485. First spring; 486. Sealing plate; 487. Adjusting rod; 488. Connecting circular plate; 489. Connecting frame; 4810. Sliding plate; 471. Bearing frame; 472. Water spraying pipe; 473. Nozzle; 474. Water inlet pipe; 475. Reciprocating gear; 476. First rack; 477. Electric telescopic rod; 478. Gear ring; 479. Second rack; 4710. Moving frame; 4711. Cleaning frame; 4712. Cleaning brush; 4713. Touch plate; 4714. Elastic touch rod. Detailed Implementation
[0028] For the first embodiment, please refer to... Figures 1-5 This invention provides an anti-clogging screw press dewatering machine for sludge treatment. By incorporating a flocculation device 7, sludge water enters the flocculation tank 71 after being controlled by an overflow prevention box 9 to prevent overflow. Chemicals flow from the dosing pipe 711 into the connecting pipe 712, and are then evenly sprayed out through the spray holes 714 at the bottom of the two side spray pipes 713, falling onto the rotating spreading disc 715 below. The spreading disc 715 rotates together with the rotating shaft 76, and the sprayed chemicals spread outwards along the arc-shaped guide groove 716 at the top of the spreading disc 715, allowing the chemicals to evenly diffuse into the sludge water within the flocculation tank 71, preventing the chemicals from accumulating in one place and failing to mix thoroughly. When the rotating shaft 76 rotates, it drives the dispersing plates 79 above to rotate synchronously. The dispersing plates 79, staggered on the two rotating shafts 76, can break up the clumps of sludge entering the flocculation tank 71, allowing the chemicals to fully contact the dispersed sludge. The newly added flocculant is quickly dispersed, allowing the agent to mix evenly with the raw water rapidly, further preventing excessively high local concentrations. The symmetrically arranged arc-shaped mixing plates 78 at the bottom create an up-and-down convection stirring effect when rotating, which can drive the sludge water at different depths in the flocculation box 71 to roll and flow up and down, further improving the mixing uniformity and allowing the sludge to fully react with the agent for flocculation. The arc-shaped guide plate 77 at the bottom, being gradually expanding, guides the water flow upward when rotating, preventing the lower layer of sludge from flocculating and affecting the flocculation effect, and guiding the water flow upward to fully react with the flocculant. Finally, the fully flocculated sludge water flows smoothly and evenly to the outlet pipe 710. Through the above operations, the flocculant can be evenly mixed with the sludge, avoiding uneven flocculation, ensuring that the sludge entering the screw press dewatering device 4 meets the flocculation requirements, reducing the processing load of subsequent dewatering work, and reducing the possibility of sludge blockage.
[0029] For the second embodiment, please refer to... Figures 1-8With the water inlet mechanism 48 in place, the flocculated sludge water flows into the water inlet cylinder 482 from the water outlet pipe 710. When the sludge begins to clog, excess sludge accumulates inside the water inlet cylinder 482 at the inlet position, and the pressure inside the water inlet cylinder 482 gradually increases, gradually squeezing the adjusting plate 484. After being squeezed, the adjusting plate 484 slides along the inner wall of the annular sleeve 483, squeezing the first spring 485 to contract it. At the same time, it drives the connecting circular plate 488 and the adjusting rod 487 to move outward. When the connecting circular plate 488 moves, it drives the sliding plate 4810 to slide inward along the side wall of the water inlet cylinder 482 through the connecting frame 489. The sliding plate 4810 gradually reduces the water inlet cross-sectional area of the water inlet cylinder 482, reducing the amount of sludge water entering the dewatering tank 41 per unit time, avoiding excessive sludge intake that cannot be processed in time and causing further blockage, and also avoiding excessive pressure in the dewatering tank 41 that could cause equipment failure. Once the sludge blockage is resolved, the pressure inside the inlet cylinder 482 decreases, and the first spring 485 rebounds after losing significant pressure, pushing the adjusting plate 484 to reset. The sliding plate 4810 also resets and reopens the inlet cross-sectional area, restoring the normal inlet flow rate of the sludge water. This completes the automatic adjustment of the inlet flow rate, eliminating the need for frequent manual adjustments based on the blockage situation and improving the stability and anti-blockage capability of the equipment.
[0030] Third embodiment, please refer to Figures 1-10By incorporating a cleaning device 47, after the dewatering assembly 45 completes its dewatering process, a significant amount of attached sludge, debris, and sticky flocculents may remain on the ring plates of the filter assembly 46. If these impurities are not cleaned promptly, they will accumulate over time and clog the filter gaps between the ring plates, preventing water from filtering out properly during subsequent dewatering, increasing the probability of blockage, and also increasing the load on the screw shaft rotation. Therefore, after the dewatering operation is completed, high-pressure clean water is sent from the inlet pipe 474 into each spray pipe 472, and then sprayed at high speed from the nozzles 473 at the bottom of the spray pipes 472, washing over the gaps in the ring plates of the dewatering assembly 45. Simultaneously, the electric telescopic rod 477 begins to reciprocate, driving the first toothed rod 476 to reciprocate linearly. The reciprocating motion of the first toothed rod 476 continuously drives the meshing reciprocating gear 475 to rotate in both directions, thereby causing the entire spray pipe 472 to oscillate at small angles along its own axis, causing the nozzles 473 to continuously change their spray angle, ensuring that the high-pressure water flow covers the filter assembly 46. The ring plate reaches more areas, cleaning many dead corners that conventional fixed nozzles cannot cover, avoiding cleaning blind spots and greatly improving the cleaning coverage. At the same time, when the water spray pipe 472 rotates, it drives the fixed toothed ring 478 to rotate synchronously. After the toothed ring 478 rotates, it drives the meshing second toothed rod 479 to move back and forth in the vertical direction. The second toothed rod 479 drives the moving frame 4710, as well as the cleaning frame 4711 and cleaning brush 4712 above the moving frame 4710 to move back and forth synchronously. The cleaning brush 4712 is attached to the side of the gap of the stacked ring plate. During the movement, it can brush away the stubborn attached sludge that has been loosened by high-pressure water. Combined with high-pressure water spray cleaning, it further enhances the cleaning effect, keeps the gap of the ring plate unobstructed, and prevents the gap from shrinking or even completely blocking the gap after the residual sludge dries. This reduces the probability of clogging during the next dehydration operation and eliminates the need for staff to disassemble the equipment regularly to manually clean the gap, reducing the workload of manual maintenance and further improving the overall anti-clogging capability of the equipment.
[0031] For the fourth embodiment, please refer to [link / reference]. Figures 1-10By setting up inclined filter plates 12, the wastewater filtered from the dewatering tank 41, along with the sludge, debris, and fibers washed down, falls into the collection tank 3 below. After passing through the inclined filter plates 12, most of the sludge and debris are trapped on them. Water passes through the inclined filter plates 12 and falls to the bottom of the collection tank 3 for discharge and recycling. The trapped sludge and debris gradually slide down the inclined filter plate surface and eventually slides out from the discharge port 10 into the collection tank 11 below for collection. The rounded corners on the filter openings of the inclined filter plates 12 prevent fibers from getting caught on the filter plate surface, reducing the probability of impurity accumulation. Simultaneously, when the cleaning frame 4711 moves back and forth with the touch plate 4713, the touch plate 4713... The reciprocating movement of 713 causes the elastic actuating rod 4714 to intermittently press down on the upper surface of the inclined filter plate 12. After the inclined filter plate 12 is subjected to downward pressure, it will compress the second spring 13 at the bottom and move downward. When the actuating plate 4713 leaves, the second spring 13 rebounds and causes the inclined filter plate 12 to return to its original position. This causes the inclined filter plate 12 to vibrate up and down continuously in small amplitude. This vibration can accelerate the sliding of the sludge and debris trapped on the inclined filter plate 12, preventing the debris from getting stuck on the filter plate surface and preventing the filter plate from clogging. This improves the filtration efficiency of the inclined filter plate 12 in the water collection tank 3. It also eliminates the need for manual cleaning of the sludge and debris accumulated in the water collection tank 3, further reducing the workload of equipment maintenance.
[0032] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. The scope of protection of the present invention should be determined by the scope of the claims.
Claims
1. A clog-resistant screw press dewatering machine for sludge treatment, characterized in that: The system includes a connecting frame (1), a machine frame (2) fixedly connected to the top of the connecting frame (1), water collection tanks (3) fixedly connected to both sides of the inner wall of the machine frame (2), a screw press dewatering device (4) fixedly connected to the top of the water collection tank (3), the bottom of the screw press dewatering device (4) fixedly connected to the top of the machine frame (2), a mud collection tank (5) fixedly connected to the left side of the machine frame (2) by a bracket, a fixed frame (6) fixedly connected to the side of the connecting frame (1) away from the mud collection tank (5) by a bracket, a flocculation device (7) fixedly connected to the top of the fixed frame (6), a control box (8) fixedly connected to the side of the flocculation device (7), and an overflow prevention box (9) fixedly connected to the side of the flocculation device (7) away from the machine frame (2). The outlet of the overflow prevention box (9) is connected to the flocculation device (7) and is used to prevent the flocculation device (7) from overflowing during flocculation. The stacked screw dewatering device (4) includes a dewatering tank (41), and guide grooves (42) are symmetrically opened on the rear side of the inner wall of the dewatering tank (41). The left side of the dewatering tank (41) is connected to a mud discharge tank (43). A dewatering motor (44) is fixedly connected to the left side of the mud discharge tank (43). The drive shaft of the dewatering motor (44) passes through the mud discharge tank (43) and is fixedly connected to a dewatering component (45). Both sides of the inner wall of the dewatering tank (41) are fixedly connected to a water filter component (46). The water filter component (46) is sleeved on the outside of the dewatering component (45). A cleaning device (47) is fixedly connected to the part of the inner wall of the dewatering tank (41) above the dewatering component (45). A water inlet mechanism (48) passes through and is fixedly connected to the side of the dewatering tank (41) away from the mud discharge tank (43). The bottom of the dewatering tank (41) is connected to a water collection tank (3). The mud discharge port of the mud discharge tank (43) is connected to a mud collection tank (5). The water inlet mechanism (48) includes a connecting cylinder (481), the top of which is connected to a water inlet cylinder (482). An annular sleeve (483) is fixedly connected to the right side of the inner wall of the connecting cylinder (481). An adjusting plate (484) is slidably connected to the inner wall of the annular sleeve (483). A first spring (485) is evenly fixedly connected to the right side of the inner wall of the annular sleeve (483). One end of the first spring (485) is fixedly connected to the adjusting plate (484). A sealing plate (486) is fixedly connected to the side of the adjusting plate (484) away from the first spring (485). An adjusting rod (487) is evenly fixedly connected to the side away from the sealing plate (486) and located on the side of the first spring (485). The end of the adjusting rod (487) away from the adjusting plate (484) passes through the connecting cylinder (481) and is fixedly connected to the connecting round plate (488). Both sides of the connecting round plate (488) are fixedly connected to the connecting frame (489). The side of the water inlet cylinder (482) away from the connecting round plate (488) is slidably connected to the sliding plate (4810). The side of the sliding plate (4810) away from the water inlet cylinder (482) is fixedly connected to the connecting frame (489) through the bracket. The cleaning device (47) includes a support frame (471). A water spray pipe (472) is rotatably connected to the top of the support frame (471) via a bracket. A nozzle (473) is evenly connected to the bottom of the water spray pipe (472). One end of the water spray pipe (472) passes through the dehydration tank (41) and is connected to an inlet pipe (474). A reciprocating gear (475) is fixedly connected to the end of the water spray pipe (472) away from the inlet pipe (474). A first gear (476) meshes with the bottom of the reciprocating gear (475). One end of the rod (476) passes through the dehydration tank (41) and is fixedly connected to the movable end of the electric telescopic rod (477) via a bracket. A toothed ring (478) is sleeved on and fixedly connected to the water spray pipe (472). A second toothed rod (479) is engaged on the side of the toothed ring (478). A movable frame (4710) is fixedly connected to the bottom of the second toothed rod (479). A cleaning frame (4711) is evenly fixedly connected to the top of the movable frame (4710). A cleaning brush (4712) is evenly fixedly connected to the inner wall of the cleaning frame (4711). The bottom of the cleaning frame (4711) is symmetrically fixedly connected with a touch plate (4713). The end of the touch plate (4713) away from the cleaning frame (4711) is fixedly connected with an elastic touch rod (4714). The support frame (471) is fixedly connected to both sides of the inner wall of the dehydration tank (41). One end of the first toothed rod (476) passes through one side of the inner wall of the dehydration tank (41) and is slidably connected to the dehydration tank (41). The fixed end of the electric telescopic rod (477) is fixedly connected to the dehydration tank (41) through a bracket. The side of the second toothed rod (479) away from the toothed ring (478) is slidably connected to the inner wall of the guide groove (42) through a slider. The water collection tank (3) has a drain outlet (10) on the right side. The part of the water collection tank (3) located below the drain outlet (10) on the right side is fixedly connected to a collection box (11). Inclined filter plates (12) are slidably connected to both sides of the inner wall of the water collection tank (3). The filter openings on the inclined filter plates (12) have rounded corners. A second spring (13) is fixedly connected to the bottom diagonal of the inclined filter plates (12). A fixing plate (14) is fixedly connected to the bottom of the second spring (13). Two sets of fixing plates (14) are symmetrically fixedly connected to both sides of the inner wall of the water collection tank (3).
2. The anti-clogging screw press dewatering machine for sludge treatment according to claim 1, characterized in that: The flocculation device (7) includes a flocculation box (71), a support plate (72) is fixedly connected to the top of the flocculation box (71), a flocculation motor (73) is fixedly connected to the top of the support plate (72), the drive shaft of the flocculation motor (73) passes through the top of the support plate (72) and is fixedly connected to a drive gear (74), a driven gear (75) is symmetrically rotatably connected to the bottom of the support plate (72), the side of the driven gear (75) meshes with the side of the drive gear (74), a rotating shaft (76) is fixedly connected to the bottom of both the drive gear (74) and the driven gear (75), and an arc-shaped guide plate (77) is evenly fixedly connected to the bottom of the side of the rotating shaft (76). The arc-shaped structure gradually expands from top to bottom. The part of the side of the rotating shaft (76) above the arc-shaped guide plate (77) is uniformly fixedly connected to the arc-shaped mixing plate (78). The arc-shaped mixing plate (78) is provided in two sets and symmetrically arranged on the rotating shaft (76). The part of the side of the rotating shaft (76) above the arc-shaped mixing plate (78) is uniformly fixedly connected to the dispersing plate (79). The dispersing plate (79) on the rotating shaft (76) at the bottom of the driving gear (74) and the dispersing plate (79) on the rotating shaft (76) at the bottom of the driven gear (75) are staggered. The top of the flocculation box (71) away from the overflow box (9) is uniformly connected to the outlet pipe (710).
3. The anti-clogging screw press dewatering machine for sludge treatment according to claim 2, characterized in that: The flocculation box (71) is fixedly connected to the rear side by a bracket with a dosing pipe (711). The dosing port of the dosing pipe (711) is connected to a connecting pipe (712). The side of the connecting pipe (712) away from the dosing pipe (711) is symmetrically connected to a spraying pipe (713). The bottom of the spraying pipe (713) is evenly provided with spraying holes (714). The part of the rotating shaft (76) located below the spraying pipe (713) is fixedly connected to a spreading disc (715). The top of the spreading disc (715) is evenly provided with an arc-shaped guide groove (716).
4. The anti-blocking type decanter centrifuge for sludge treatment according to claim 3, characterized in that: The flocculation box (71) is fixedly connected to the top of the fixed frame (6). The side of the flocculation box (71) is fixedly connected to the control box (8). The bottom of the side of the flocculation box (71) is connected to the outlet of the overflow box (9). The end of the outlet pipe (710) away from the flocculation box (71) is connected to the water inlet mechanism (48). The connecting pipe (712) is fixedly connected to the bottom of the support plate (72) through the bracket.
5. The anti-clogging screw press dewatering machine for sludge treatment according to claim 1, characterized in that: The connecting cylinder (481) passes through the dehydration tank (41) on the left and is fixedly connected to the dehydration tank (41). The inner wall of the connecting cylinder (481) is rotatably connected to the spiral shaft of the dehydration assembly (45) on the right. The sealing plate (486) passes through the side and is rotatably connected to the spiral shaft of the dehydration assembly (45). The adjusting plate (484) passes through the left and is rotatably connected to the spiral shaft of the dehydration assembly (45). The top of the water inlet cylinder (482) is connected to the water outlet pipe (710).