Spiral dewatering, drying and crushing equipment for sludge treatment
By introducing a pre-screening and dual-stage crushing system into the spiral dewatering equipment, the problem of large sludge blockage was solved, achieving uniform sludge feeding and efficient dewatering, and improving the stability and processing efficiency of the equipment operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-25
- Publication Date
- 2026-04-14
AI Technical Summary
Existing spiral dewatering equipment lacks pre-treatment crushing components in the feeding system, which makes large sludge pieces prone to clogging, affecting the continuous operation of the equipment. Furthermore, the water inside the large sludge pieces is difficult to squeeze out, resulting in large fluctuations in moisture content after drying and increased equipment wear.
The design incorporates a pre-screening and two-stage crushing feeding pretreatment system, including a feeding frame, a cutting roller, and a feeding rod frame. Driven by feeding motors and cutting motors, it pre-screens large pieces of sludge and crushes them to prevent clogging and ensure that the sludge enters the cone screen cylinder evenly for dewatering.
It effectively eliminates the risk of material blockage, improves equipment operation stability and capacity, shortens the processing cycle, reduces equipment maintenance costs, and improves sludge treatment efficiency.
Smart Images
Figure CN121850309A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of sludge drying equipment technology, and in particular to a spiral dewatering, drying and pulverizing sludge treatment equipment. Background Technology
[0002] In the fields of municipal sewage treatment, industrial wastewater treatment, and environmental solid waste disposal, sludge, as a major byproduct, has a high water content, large volume, is easily perishable, and contains harmful substances, posing significant challenges to its storage, transportation, and final disposal. Sludge drying, as a core step in sludge treatment, uses technologies such as thermal evaporation or enhanced mechanical dewatering to reduce the water content of sludge, thereby achieving sludge reduction, stabilization, harmlessness, and resource recovery.
[0003] In mechanical dewatering and drying technology, spiral dewatering equipment has become the mainstream sludge drying equipment in the industry due to its advantages such as compact structure, stable operation, and high dewatering efficiency. Its core working principle is to use the rotation of a variable pitch spiral shaft inside the filter cylinder to propel the sludge. The compression effect generated by the gradual reduction of the spiral cavity volume, combined with the resistance formed by the back pressure plate, squeezes the water in the sludge out of the filter holes of the filter cylinder, realizing the solid-liquid separation and drying of the sludge. During the sedimentation and storage process, raw sludge is very prone to forming large agglomerates of varying particle sizes due to gravity compression and microbial action.
[0004] Existing spiral dewatering equipment often uses a direct open feeding system, lacking pre-treatment crushing components for large sludge pieces. This leads to frequent blockages in the feed channel, where large sludge pieces easily get stuck in the narrow passage between the feed hopper and the spiral shaft inlet. This obstructs the sludge's flow, requiring manual cleaning and shutdown, severely impacting continuous operation and significantly reducing production efficiency. Furthermore, the internal moisture of large sludge pieces is difficult to directly squeeze out; the spiral shaft's squeezing action only affects the surface, resulting in large fluctuations in the moisture content of the dried sludge. Some large sludge pieces remain moist internally, failing to meet the moisture content requirements for subsequent resource recovery. Finally, the stuck sludge pieces cause impact and friction on the spiral shaft blades and filter screen, accelerating wear on vulnerable parts and increasing maintenance costs and failure rates. Summary of the Invention
[0005] This invention solves the problems in related technologies and proposes a spiral dewatering, drying and pulverizing equipment for sludge treatment.
[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: a spiral dewatering, drying and pulverizing equipment for sludge treatment, including a support, a dewatering component and a feeding component. The support includes a bracket, and the dewatering component is arranged above the bracket. The dewatering component includes a housing, and a conical screen cylinder is horizontally fixed inside the housing. A discharge port is opened through the upper side of the feed end of the conical screen cylinder. A feeding component is vertically arranged above the discharge port of the conical screen cylinder on the top surface of the housing. The feeding component includes a feeding frame, which is fixed through the top surface of the housing. The bottom end of the feeding frame is inserted into the discharge port of the conical screen cylinder. A feeding frame box is inserted into the top of the feeding frame, and a frame plate is horizontally fixed on the bottom surface of the feeding frame box. The frame plate is used to filter large sludge blocks into the feeding frame. Slot blocks are symmetrically fixed on the lower side of the inner walls on both sides of the feeding frame. Two cutting rollers are horizontally rotatably connected inside the feeding frame, and the two cutting rollers are engaged with the slot blocks.
[0007] As a preferred embodiment, cutting motors are horizontally fixed on both sides of the outer wall of the feed frame, and the output end of the cutting motor is fixed to the end of the two cutting rollers.
[0008] As a preferred embodiment, rotating plates are horizontally fixed on both sides of the top surface of the feeding frame box, and feeding rods are vertically rotatably connected to the rotating plates of the feeding frame box.
[0009] As a preferred embodiment, a feeding motor is vertically fixed to the top of the rotating plate of the feeding frame box, and the output end of the feeding motor is fixed to the top surface of the feeding rod frame.
[0010] As a preferred option, multiple support plates are fixed horizontally and vertically on the outer wall of the cone mesh cylinder, and the multiple support plates are fixed on the inner wall of the machine casing.
[0011] As a preferred embodiment, an output screw is horizontally installed inside the cone-shaped mesh cylinder, and both ends of the output screw are rotatably connected to the two end faces of the machine housing. A dehydration motor is horizontally fixed on the top surface of the bracket, and the output end of the dehydration motor is fixed to the end of the output screw.
[0012] As a preferred embodiment, a discharge frame is vertically fixed through the bottom surface of the casing at the end away from the feed component, and the discharge frame is used to guide the mud material to fall and be discharged from the casing.
[0013] As a preferred embodiment, multiple support springs are vertically fixed on the bottom surface of the bracket, and the bottom ends of the multiple support springs are fixed with supports. A vibration motor is horizontally fixed on the bottom surface of the bracket.
[0014] Compared with existing technologies, the advantages of this invention are as follows: This invention eliminates the risk of material blockage at the source by designing a pre-screening and dual-stage crushing feeding pretreatment system. Pre-screening intercepts large pieces of sludge. After entering the feeding frame, the sludge first falls into the feeding box. The feeding motor drives the feeding rod to separate small pieces of sludge from the gaps in the frame plates, while large pieces of sludge are intercepted on the frame plates, preventing them from directly entering the narrow feeding channel and forming a blockage bridge. This reduces the blockage rate of the feeding channel and eliminates downtime for cleaning due to material blockage. After being continuously agitated by the feeding rod, the intercepted large pieces of sludge, along with the falling small pieces, enter between two opposing rotating cutting rollers. The cutting motor drives the rollers to create a shearing and squeezing action, crushing the sludge into uniform particles. The crushed sludge can then smoothly enter the conical screen cylinder, avoiding the problem of large pieces of sludge getting stuck on the spiral shaft in traditional equipment. By optimizing the feeding and dewatering processes, the sludge treatment cycle is significantly shortened and the unit time capacity is increased. The vibration motor on the feeding process support drives the support to shake at high frequency under the action of the support spring, which quickly shakes the crushed sludge to the discharge port of the cone screen cylinder, avoiding the accumulation of sludge at the feed port. The feeding speed is improved compared with traditional equipment. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention;
[0016] Figure 2 This is an exploded structural diagram of the present invention;
[0017] Figure 3 This is a schematic diagram of the dehydration component in the decomposed state in an embodiment of the present invention;
[0018] Figure 4 This is a schematic diagram of the feed component in a disassembled state in an embodiment of the present invention;
[0019] Figure 5 This is a structural schematic diagram of the support member in an exploded state according to an embodiment of the present invention.
[0020] In the diagram: 1. Support component; 11. Bracket; 12. Support spring; 13. Vibration motor; 2. Dewatering component; 21. Machine housing; 22. Conical mesh cylinder; 23. Support plate; 24. Output screw; 25. Dewatering motor; 26. Discharge frame; 3. Feeding component; 31. Feeding frame; 32. Feeding frame box; 33. Frame plate; 34. Feeding motor; 35. Feeding rod frame; 36. Slot block; 37. Cutting motor; 38. Cutting roller. Detailed Implementation
[0021] 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 some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0022] like Figures 1 to 5 As shown, a sludge treatment spiral dewatering, drying, and pulverizing device includes a support 1, a dewatering component 2, and a feeding component 3. The support 1 includes a bracket 11, and the dewatering component 2 is arranged above the bracket 11. The dewatering component 2 includes a casing 21, and a conical screen cylinder 22 is horizontally fixed inside the casing 21. A discharge port is provided through the upper side of the feed end of the conical screen cylinder 22. The feeding component 3 is vertically arranged through the top surface of the casing 21 near the discharge port of the conical screen cylinder 22. The feeding component 3 includes a feeding frame 31, which is through the... The feed frame 31 is fixed to the top surface of the housing 21, and its bottom end is inserted into the discharge port of the cone screen cylinder 22. A feeding frame box 32 is inserted into the top of the feed frame 31, and a frame plate 33 is horizontally fixed on the bottom surface of the feeding frame box 32. The frame plate 33 is used to filter large sludge blocks into the feed frame 31. The lower sides of the inner walls of the feed frame 31 are symmetrically fixed with slot blocks 36, and two cutting rollers 38 are horizontally rotatably connected inside the feed frame 31. The two cutting rollers 38 are engaged with the slot blocks 36. Cutting motors 37 are horizontally fixed on both sides of the outer wall of the feed frame 31, and the output end of the cutting motors 37 is fixed to the ends of the two cutting rollers 38. By setting the feed frame 31 and the cutting motors 37, the feed frame 31 can filter large sludge blocks into the feed frame 31, thus preventing large sludge blocks from directly entering the dewatering unit 2, thereby evenly distributing the material and avoiding clogging of the cone screen cylinder 22. Therefore, the working principle of the feed frame 31 is to perform preliminary screening and filtration of sludge through the frame plate 33, ensuring that the volume of sludge entering the cone screen cylinder 22 is relatively moderate, reducing large sludge lumps entering the equipment. The cutting roller 38 is set to engage with the slot block 36, allowing the cutting roller 38 to cut back and forth on the sludge within the feed frame 31, thereby crushing the sludge entering the feed frame 31. Therefore, the working principle of the cutting roller 38 is to utilize its rotary cutting function to further crush the incoming sludge particles, making them more suitable for filtration through the cone screen cylinder 22. This equipment can effectively filter and crush large sludge lumps, ensuring that the sludge entering the dewatering unit 2 is relatively uniform and does not clog the equipment. Therefore, a more efficient sludge treatment and dewatering process can be achieved, thereby reducing maintenance needs and failure rates during equipment operation and improving overall processing efficiency.
[0023] In one embodiment, such asFigure 4 As shown, rotating plates are horizontally fixed on both sides of the top surface of the feeding frame box 32, and a feeding rod frame 35 is vertically rotatably connected to the rotating plates of the feeding frame box 32. A feeding motor 34 is vertically fixed to the top of the rotating plates of the feeding frame box 32, and the output end of the feeding motor 34 is fixed to the top surface of the feeding rod frame 35. This design allows the feeding rod frame 35 to rotate via a motor drive. The working principle of the feeding motor 34 is to convert electrical energy into mechanical energy, and through its output end connected to the feeding rod frame 35, to achieve the precise rotational movement of the feeding rod frame 35, which agitates the sludge on the frame plate 33. The agitated sludge falls from the frame plate 33, and large volumes of sludge remain on the frame plate 33, preventing large volumes of sludge from falling and clogging the feed frame 31, thus affecting the sludge falling efficiency.
[0024] In one embodiment, such as Figure 3 As shown, multiple support plates 23 are horizontally and vertically fixed on the outer wall of the cone mesh cylinder 22, and these support plates 23 are fixed to the inner wall of the housing 21. An output screw 24 is horizontally arranged inside the cone mesh cylinder 22, and both ends of the output screw 24 are rotatably connected to the two end faces of the housing 21. A dewatering motor 25 is horizontally fixed on the top surface of the bracket 11, and the output end of the dewatering motor 25 is fixed to the end of the output screw 24. By setting rotating plates horizontally fixed on both sides of the top surface of the material feeding frame box 32, and vertically rotatably connecting a material feeding rod frame 35 to the rotating plates of the material feeding frame box 32, this technical feature significantly improves the material handling efficiency and stability. Specifically, the design of the rotating plates fixed on both sides of the material feeding frame box 32 ensures the structural robustness and stability, providing a reliable foundation for subsequent material handling. The material feeding rod frame 35, through its rotatable connection on the rotating plates, can flexibly move materials at various angles, improving the convenience and accuracy of operation.
[0025] In one embodiment, such as Figure 3 As shown, a discharge frame 26 is vertically fixed to the bottom surface of the casing 21 at the end away from the feed member 3. The discharge frame 26 is used to guide the mud material to fall and exit the casing 21. By setting the technical features of the discharge frame 26, it is vertically fixed to the bottom surface of the casing 21 at the end away from the feed member 3, and is used to guide the mud material to fall and exit the casing 21. After the mud material has been processed or treated inside the casing, it falls naturally onto the discharge frame 26 under gravity. Through the guiding action of the discharge frame, the mud material can be smoothly discharged from the casing. The purpose of this design is to provide an effective mud material discharge path, ensuring that the mud material can be discharged from the casing in a timely and smooth manner, avoiding blockage or accumulation, and maintaining the continuous production efficiency of the equipment.
[0026] In one embodiment, such as Figure 5As shown, multiple support springs 12 are vertically fixed on the bottom surface of the support 11, and the bottom ends of the multiple support springs 12 are fixed with supports. A vibration motor 13 is horizontally fixed on the bottom surface of the support 11. In order to quickly allow the sludge to fall into the cone-shaped screen cylinder 22, the vibration motor 13 on the support 11 is started, which causes the support 11 to shake under the deformation of the support springs 12, thereby accelerating the sludge to fall into the cone-shaped screen cylinder 22.
[0027] The working principle of this invention is as follows:
[0028] First, during the dewatering and drying of sludge, the sludge is added from the top opening of the feed frame 31 of the feed unit 3. The sludge falls into the feeding frame box 32. The feeding motor 34 is started to drive the feeding rod frame 35 to rotate on the rotating plate, which pushes the sludge on the frame plate 33. The sludge falls up and down from the frame plate 33. Large volumes of sludge remain on the frame plate 33, which avoids large volumes of sludge falling and clogging the feed frame 31, thus affecting the sludge falling efficiency. The falling sludge falls into the two cutting rollers 38 inside the feed frame 31. The cutting motor 37 is started to drive the cutting rollers 38 to rotate. The rotating cutting rollers 38 squeeze and cut the sludge in opposite directions, further crushing the sludge blocks.
[0029] Then, the crushed sludge blocks fall into the discharge port of the cone-shaped screen cylinder 22 inside the casing 21. The dewatering motor 25 is started to drive the output screw 24 to rotate in the cone-shaped screen cylinder 22. The inner wall of the cone-shaped screen cylinder 22 is fixed with a mesh cloth. The output screw 24 squeezes the sludge in the cone-shaped screen cylinder 22 and discharges it towards the discharge port at the other end. The water in the squeezed sludge enters the casing 21 through the cone-shaped screen cylinder 22 and is discharged from the drain port on the bottom of the casing 21. The sludge with squeezed water is discharged from the discharge port and falls out of the casing 21 from the discharge frame 26.
[0030] Finally, in order to quickly allow the sludge to fall into the cone-shaped cylinder 22, the vibration motor 13 on the support 11 is activated, which causes the support 11 to shake under the deformation of the support spring 12, thus accelerating the sludge to fall into the cone-shaped cylinder 22.
[0031] The above are preferred embodiments of the present invention. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims
1. A spiral dewatering, drying, and pulverizing device for sludge treatment, characterized in that, The device includes a support (1), a dewatering component (2), and a feeding component (3). The support (1) includes a bracket (11), and the dewatering component (2) is disposed above the bracket (11). The dewatering component (2) includes a housing (21), and a conical mesh cylinder (22) is horizontally fixed inside the housing (21). A discharge port is provided through the upper side of the feeding end of the conical mesh cylinder (22). The feeding component (3) is vertically disposed above the discharge port of the conical mesh cylinder (22) on the top surface of the housing (21). The feeding component (3) includes a feeding frame (31), and the feeding frame (31) is fixed through the support (1). On the top surface of the housing (21), and the bottom end of the feed frame (31) is inserted into the discharge port of the cone mesh cylinder (22), a feeding frame box (32) is inserted into the top of the feed frame (31), and a frame plate (33) is horizontally fixed on the bottom surface of the feeding frame box (32), and the frame plate (33) is used to filter large volume sludge blocks into the feed frame (31). The inner walls of both sides of the feed frame (31) are symmetrically fixed with slot blocks (36), and two cutting rollers (38) are horizontally rotatably connected inside the feed frame (31), and the two cutting rollers (38) are engaged with the slot blocks (36).
2. The sludge treatment spiral dewatering, drying, and pulverizing equipment according to claim 1, characterized in that: Both sides of the outer wall of the feed frame (31) are horizontally fixed with cutting motors (37), and the output end of the cutting motors (37) is fixed at the ends of the two cutting rollers (38).
3. The sludge treatment spiral dewatering, drying, and pulverizing equipment according to claim 1, characterized in that: The top surface of the feeding frame box (32) is horizontally fixed with rotating plates on both sides, and the feeding rod frame (35) is vertically rotatably connected to the rotating plate of the feeding frame box (32).
4. The sludge treatment spiral dewatering, drying, and pulverizing equipment according to claim 3, characterized in that: The top of the rotating plate of the feeding frame box (32) is vertically fixed with a feeding motor (34), and the output end of the feeding motor (34) is fixed on the top surface of the feeding rod frame (35).
5. The sludge treatment spiral dewatering, drying, and pulverizing equipment according to claim 1, characterized in that: Multiple support plates (23) are fixed horizontally and vertically on the outer wall of the cone mesh cylinder (22), and the multiple support plates (23) are fixed on the inner wall of the casing (21).
6. The sludge treatment spiral dewatering, drying, and pulverizing equipment according to claim 5, characterized in that: The cone-shaped cylinder (22) has an output screw (24) horizontally arranged inside, and both ends of the output screw (24) are rotatably connected to the two end faces of the housing (21). The top surface of the bracket (11) is horizontally fixed with a dehydration motor (25), and the output end of the dehydration motor (25) is fixed to the end of the output screw (24).
7. The sludge treatment spiral dewatering, drying, and pulverizing equipment according to claim 1, characterized in that: A discharge frame (26) is vertically fixed at the bottom of the casing (21) away from the feed member (3), and the discharge frame (26) is used to guide the mud material to fall and discharge from the casing (21).
8. The sludge treatment spiral dewatering, drying, and pulverizing equipment according to claim 1, characterized in that: Multiple support springs (12) are vertically fixed on the bottom surface of the bracket (11), and the bottom ends of the multiple support springs (12) are fixed with supports. A vibration motor (13) is horizontally fixed on the bottom surface of the bracket (11).