A crushing type sludge treatment device

Abstract

This invention discloses a crushing sludge treatment device, relating to the field of sludge treatment. It includes a sludge crusher housing with a partition fixed inside, dividing the housing into a left crushing chamber and a right desludge chamber. A multi-stage crushing mechanism and a centrifugal desludge mechanism are respectively arranged in the left crushing chamber and the right desludge chamber. The centrifugal desludge mechanism includes a rotatably mounted perforated centrifuge cylinder, one end of which extends into the left crushing chamber. The multi-stage crushing mechanism includes a crushing component, a shearing component, and a grinding component arranged sequentially from top to bottom. The crushing component crushes the sand and gravel, the shearing component shears the crushed sand and gravel, and the grinding component grinds the sheared sand and gravel. This allows the multi-stage crushing mechanism to process the sand and gravel into powder, which is then mixed into the sludge. The sludge treatment system is used to purify the sand and gravel, achieving resource recycling and eliminating secondary pollution at its source.

Description

Technical Field

[0001] This invention relates to the field of sludge treatment, specifically to a crushing-type sludge treatment device. Background Technology

[0002] In the fields of municipal sewage and industrial wastewater treatment, the reduction and harmless disposal of sludge is a crucial step in environmental governance, typically requiring multiple processes such as chemical conditioning, dewatering and concentration, and drying and solidification. However, the sludge actually treated generally contains a large amount of hard impurities such as sand and gravel. The presence of these impurities poses significant technical challenges to sludge treatment, becoming a core bottleneck restricting treatment efficiency and environmental effectiveness.

[0003] The sand and gravel in the sludge are tightly mixed with the sludge itself. Due to the strong adhesion and fluidity of sludge, traditional treatment processes often use direct filtration and sieving to forcibly separate the sand and gravel from the sludge. However, this type of treatment has unavoidable drawbacks: on the one hand, a layer of polluting sludge colloid is firmly adsorbed on the surface of the sand and gravel. This adsorbed sludge is difficult to remove through simple filtration, resulting in the loss of a large amount of effective sludge with the sand and gravel. This not only reduces the efficiency of sludge collection and treatment but also wastes treatment costs such as reagent consumption and energy consumption. On the other hand, polluting water (containing heavy metals, organic matter, and other pollutants) in the sludge can seep into the internal pores of the sand and gravel during the adsorption process, forming "internal seepage pollution." Even after washing and simple desludge removal, the pollutants on the surface and inside the sand and gravel cannot be completely removed, leaving the sand and gravel still polluting. Directly recycling such contaminated sand and gravel (e.g., for building aggregates, road subbases, etc.) would cause secondary diffusion of pollutants, triggering a chain of environmental problems such as soil and groundwater pollution. Direct disposal, on the other hand, wastes this recyclable resource and increases the environmental pressure and cost of solid waste disposal. Furthermore, existing sludge treatment facilities are not specifically designed for the deep separation and purification of sand and gravel into sludge: they cannot achieve pollution-free treatment of sand and gravel, requiring specialized sand and gravel purification systems, which are large in size and costly.

[0004] In summary, existing sludge treatment technologies have prominent problems when dealing with sand-containing sludge, such as incomplete separation of sand and sludge, low sludge treatment efficiency, and secondary pollution or resource waste caused by residual sand and gravel. Moreover, existing devices lack specific solutions for these problems. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a crushing sludge treatment device that crushes sand and gravel after desliming and mixes them into the sludge for simultaneous purification treatment.

[0006] The objective of this invention is achieved through the following technical solution: a sludge crushing device, comprising a sludge crusher housing, wherein a partition is fixed inside the sludge crusher housing, the partition dividing the sludge crusher housing into a left crushing chamber and a right desludge chamber, wherein a multi-stage crushing mechanism and a centrifugal desludge mechanism are respectively arranged in the left crushing chamber and the right desludge chamber, the centrifugal desludge mechanism comprising an inclined, hollowed-out centrifugal cylinder, the hollowed-out centrifugal cylinder being rotatably mounted on the sludge crusher housing, one end of the hollowed-out centrifugal cylinder extending into the left crushing chamber, the multi-stage crushing mechanism comprising a crushing component, a shearing component, and a grinding component arranged sequentially from top to bottom, the crushing component comprising a rotatably arranged crushing cone, the diameter of the crushing cone gradually increasing from top to bottom, the crushing... The crushing cone rotates eccentrically to create a gradually changing crushing space between the crushing cone and the inner wall of the left crushing chamber. The shearing assembly includes a moving shearing disc and a fixed shearing disc. The moving shearing disc has multiple first discharge ports extending through it along its own axial direction, and the fixed shearing disc has multiple second discharge ports extending through it along its own axial direction. The moving shearing disc cooperates with the fixed shearing disc along its own axial direction to form a shearing surface. The grinding assembly includes a moving grinding ring and a fixed grinding body. The fixed grinding body is coaxially fixed to the inner ring of the moving grinding ring, and a grinding gap is formed between the inner wall of the moving grinding ring and the outer wall of the fixed grinding body. The sludge crusher housing is equipped with a sludge pump. The feed port of the sludge pump is connected to the left crushing chamber through a first pipe, and the discharge port of the sludge pump is connected to the right desludge chamber through a second pipe.

[0007] Furthermore, the hollow centrifuge cylinder includes a hollow ring and filter rods. Several filter rods are fixed at both ends of the hollow ring, and the filter rods are evenly distributed along the circumference of the hollow ring. A drive seat is fixed to the inner top wall of the right desliming chamber. The drive seat has an installation hole for the hollow centrifuge cylinder to pass through. The hollow ring is rotatably assembled into the installation hole. A mud inlet pipe is connected to the mud crusher housing, and the mud inlet pipe extends into the hollow centrifuge cylinder.

[0008] Furthermore, the drive seat is provided with a drive cavity, and a bearing is assembled in the drive cavity. The hollow ring is assembled in the inner ring of the bearing, and a driven pulley is fitted on the hollow ring. A drive shaft is rotatably mounted on the top of the sludge crusher housing, and a drive pulley is fitted on the drive shaft. The drive pulley is connected to the driven pulley via a synchronous belt drive. A motor is mounted on the top of the sludge crusher housing, and the output shaft of the motor is connected to the drive shaft via a coupling.

[0009] Furthermore, the multi-stage crushing mechanism also includes a crushing mounting shaft, which is vertically fixed in the left crushing chamber. A crushing shaft is rotatably connected to the crushing mounting shaft, and a crushing cone is eccentrically fixed at the top of the crushing shaft. The inner wall of the sludge crusher housing is inclined at the position corresponding to the crushing cone. The gap between the inclined surface and the crushing cone gradually decreases from top to bottom, and several crushing cones are densely fixed on the inclined surface.

[0010] Furthermore, the movable shearing disc is arranged below the fixed shearing disc. The movable shearing disc is movably mounted on the crushing mounting shaft, and the fixed shearing disc is fixedly mounted on the crushing mounting shaft. Multiple second discharge ports are evenly distributed along the circumference of the fixed shearing disc. A shearing blade is provided between each two adjacent second discharge ports. The shearing blade is fixed to the bottom surface of the fixed shearing disc. Multiple arc-shaped shearing plates are fixed around the circumference of the second discharge ports at the bottom of the fixed shearing disc. The inner circle of the arc-shaped shearing plates is provided with shearing serrations. Multiple first discharge ports are evenly distributed along the circumference of the movable shearing disc. Multiple shearing blades are fixed around the circumference of the first discharge ports on the top surface of the movable shearing disc. The shearing blades are located in the inner circle of the arc-shaped shearing plates. The end of the shearing blade away from the movable shearing disc is provided with a first cutting edge. The first cutting edge cooperates with the shearing blade to complete the shearing action. The side of the shearing blade near the arc-shaped shearing plate forms a second cutting edge. The second cutting edge cooperates with the shearing serrations of the arc-shaped shearing plate to complete the shearing action.

[0011] Furthermore, the arc-shaped shearing plate is inclined toward the center of the fixed shearing disc to make the distance between the second cutting edge and the shearing teeth gradually decrease from top to bottom. The shearing blade body is inclined radially toward the moving grinding ring. The top surface of the fixed shearing disc is provided with an annular guide groove, and the second discharge port is opened in the annular guide groove. The radial width of the annular guide groove gradually decreases from top to bottom.

[0012] Furthermore, the inner diameter of the moving grinding ring gradually decreases from top to bottom, and several wide blades are tightly fixed on the inner wall of the moving grinding ring along its own circumference. The fixed grinding body is fixedly mounted on the crushing mounting shaft, and a threaded cutter is fixedly installed on the fixed grinding body. The gap between the threaded cutter and the wide blades gradually decreases from top to bottom.

[0013] Furthermore, a grinding cone is fixed to the bottom of the fixed grinding body, the diameter of the grinding cone gradually increases from top to bottom, several grinding rods are fixed to the circumference of the side wall of the grinding cone, several fine blades are tightly fixed to the inner wall of the moving grinding ring along its own circumference, the gap between the fine blades and the grinding cone gradually decreases from top to bottom, the number of fine blades is greater than the number of wide blades, both the wide blades and the fine blades are inclined, the horizontal distance between the wide blades and the center of the fixed grinding body gradually decreases from top to bottom, and the horizontal distance between the fine blades and the center of the fixed grinding body gradually increases from top to bottom.

[0014] Furthermore, a shearing shoulder is formed on the moving shearing disc, and an annular shearing drive groove is formed at the position of the shearing shoulder in the left crushing chamber. A shearing gear is fitted on the shearing shoulder. A grinding shoulder is formed on the moving grinding ring, and an annular grinding drive groove is formed at the position of the grinding shoulder in the left crushing chamber. A grinding gear is fitted on the grinding shoulder, and the grinding gear meshes with a grinding main gear. The shearing gear meshes with a shearing main gear. A drive shaft is rotatably mounted on the sludge crusher housing. Both the grinding main gear and the shearing main gear are fitted on the drive shaft. The top of the drive shaft is connected to the output shaft of the drive motor via a coupling. The bottom of the drive shaft is connected to a crushing drive pulley, and the bottom of the crushing shaft is connected to a crushing driven pulley. The crushing drive pulley is connected to the crushing driven pulley via a crushing synchronous belt.

[0015] Furthermore, the moving grinding ring has the freedom to move along its own axial direction, which is used to adjust the gap between the fine blade and the fixed grinding body, and the axial length of the grinding main gear is greater than the axial length of the grinding gear.

[0016] The beneficial effects of this invention are:

[0017] 1. Adopting an integrated design of "sludge removal-crushing-simultaneous purification": The inclined hollow centrifuge first pre-de-sludges the sand and gravel-containing sludge, and then the multi-stage crushing mechanism crushes the sand and gravel and mixes it into the sludge. The sludge treatment system is used to purify the sand and gravel, completely eliminating the "internal seepage pollution" of sand and gravel. There is no need to set up an additional sand and gravel purification system, which significantly reduces the equipment size and lowers the investment cost. At the same time, the crushed sand and gravel can be used as sludge solidification aggregate to realize resource recycling and eliminate secondary pollution at the source.

[0018] 2. The multi-stage crushing mechanism employs a combination of crushing, shearing, and grinding to progressively process sand and gravel, turning them into powder. This ensures the sand and gravel are fully mixed with the sludge, preventing large-diameter sand and gravel from impacting the sludge purification system. Furthermore, the pulverized sand and gravel co-solidify with the sludge in subsequent dewatering and drying processes. The sand and gravel particles fill the pores within the sludge, enhancing the structural strength of the solidified sludge and achieving resource recycling through "waste treatment." Secondly, the device eliminates the need for separate disposal of sand and gravel, completely resolving the secondary pollution problem caused by the recycling of contaminated sand and gravel. It also avoids resource waste and solid waste disposal pressure caused by discarding sand and gravel, meeting the requirements of sludge treatment for reduction, harmlessness, and resource recovery, resulting in significant environmental benefits. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the internal structure of a crushing sludge treatment device according to the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the hollow centrifuge cylinder in a crushing sludge treatment device of the present invention;

[0021] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 4 for Figure 1 Enlarged view at point B in the middle;

[0023] Figure 5 This is a schematic diagram of the fixed shear disc in a crushing sludge treatment device of the present invention;

[0024] Figure 6 This is a schematic diagram of the moving shear disc in a crushing sludge treatment device of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of the moving grinding ring in a crushing sludge treatment device of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of the fixed grinding body in a crushing sludge treatment device of the present invention;

[0027] Figure 9 This is a schematic diagram of the structure of a crushing-type sludge treatment device according to the present invention. Figure 1 ;

[0028] Figure 10 This is a schematic diagram of the structure of a crushing-type sludge treatment device according to the present invention. Figure 2 ;

[0029] Figure 11 This is a schematic diagram of the gasket structure in a crushing sludge treatment device of the present invention;

[0030] In the diagram, 1-shredder housing, 2-partition plate, 3-left crushing chamber, 4-right desliming chamber, 5-hollow centrifuge cylinder, 6-crushing cone, 7-moving shearing disc, 8-fixed shearing disc, 9-first discharge port, 10-second discharge port, 11-moving grinding ring, 12-fixed grinding body, 13-sludge pump, 14-first pipe, 15-second pipe, 16-hollow ring, 17-filter rod, 18-drive seat, 19-sludge inlet pipe, 20-mounting hole, 21-drive chamber, 22-bearing, 23-driven pulley, 24-drive shaft, 25-drive pulley, 26-synchronous belt, 27-motor, 28-crushing mounting shaft, 29-crushing shaft, 30-crushing cone, 31-shearing blade, 3 2-Arc-shaped shearing plate, 33-Shearing blade body, 34-First cutting edge, 35-Second cutting edge, 36-Annular guide groove, 37-Wide blade, 38-Threading blade, 39-Grinding cone, 40-Grinding rod, 41-Fine blade, 42-Shearing shoulder, 43-Annular shearing drive groove, 44-Shearing gear, 45-Grinding shoulder, 46-Annular grinding drive groove, 47-Grinding gear, 48-Grinding main gear, 49-Shearing main gear, 50-Drive spindle, 51-Drive motor, 52-Crushing drive pulley, 53-Crushing driven pulley, 54-Crushing synchronous belt, 55-Large diameter ring, 56-Small diameter ring, 57-Screw, 58-Limiting disc, 59-Gasket, 60-Sealing ring. Detailed Implementation

[0031] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0032] Example 1

[0033] like Figures 1 to 11As shown, a sludge crushing device includes a sludge crusher housing 1. A partition 2 is fixed inside the sludge crusher housing 1, dividing the sludge crusher housing 1 into a left crushing chamber 3 and a right desludge chamber 4. The left crushing chamber 3 and the right desludge chamber 4 are respectively equipped with a multi-stage crushing mechanism and a centrifugal desludge mechanism. The centrifugal desludge mechanism includes an inclined, perforated centrifugal cylinder 5, which is rotatably mounted on the sludge crusher housing 1. One end of the perforated centrifugal cylinder 5 extends into the left crushing chamber 3. The multi-stage crushing mechanism includes a crushing component, a shearing component, and a grinding component arranged sequentially from top to bottom. The crushing component includes a rotatably arranged crushing cone 6, the diameter of which gradually increases from top to bottom. The crushing cone 6 rotates eccentrically to allow the crushing cone 6 to interact with the left crushing chamber 3. A gradually changing crushing space is formed between the inner walls of the stone crushing chamber 3. The shearing assembly includes a moving shearing disc 7 and a fixed shearing disc 8. The moving shearing disc 7 has multiple first discharge ports 9 extending through its own axis, and the fixed shearing disc 8 has multiple second discharge ports 10 extending through its own axis. The moving shearing disc 7 cooperates with the fixed shearing disc 8 to form a shearing surface along its own axis. The grinding assembly includes a moving grinding ring 11 and a fixed grinding body 12. The fixed grinding body 12 is coaxially fixed to the inner ring of the moving grinding ring 11. A grinding gap is formed between the inner wall of the moving grinding ring 11 and the outer wall of the fixed grinding body 12. The sludge crusher housing 1 is equipped with a sludge pump 13. The feed port of the sludge pump 13 is connected to the left stone crushing chamber 3 through a first pipe 14, and the discharge port of the sludge pump 13 is connected to the right desludge chamber 4 through a second pipe 15. Sludge is conveyed from the high end of the hollow centrifuge cylinder 5 into the cylinder. Through the high-speed rotation of the hollow centrifuge cylinder 5, the sand and sludge are separated under centrifugal force, causing the sludge to fall into the right desludge chamber 4. After centrifugation for a period of time, the hollow centrifuge cylinder 5 stops rotating, allowing the sand and gravel inside to fall from the bottom into the left crushing chamber 3. Sludge is then fed back into the hollow centrifuge cylinder 5, and the above process is repeated to effectively separate the sand and sludge, preventing the sand and gravel from adhering and forming large-diameter stones under the influence of the sludge, which would increase the burden on the multi-stage crushing mechanism. The sand and gravel entering the left crushing chamber 3 first fall into the crushing space, where the eccentric rotation of the crushing cone 6 continuously compresses the sand and gravel, breaking large-diameter stones into smaller ones that fall out. Small-diameter sand and gravel enter between the fixed shear plate 8 and the moving shear plate 7 through the second feed port 10. The rotation of the moving shear plate 7 causes the shearing surface formed by the moving shear plate 7 and the fixed shear plate 8 to cut the small-diameter sand and gravel, further reducing the particle size for easier subsequent grinding. The sheared sand and gravel fall between the fixed grinding body 12 and the moving grinding ring 11. The moving grinding ring 11 and the fixed grinding body 12 work together to grind the sand and gravel into powder. The powdered sand and gravel is then transported to the right desludge chamber 4 by the sludge pump 13, where it mixes with the sludge. The right desludge chamber 4 can be equipped with a stirring structure. By adding chemicals to the right desludge chamber 4 and coordinating with the stirring structure, the sludge and powdered sand and gravel are thoroughly mixed, achieving chemical treatment of the sludge. After mixing is complete...The sludge is transported through the discharge pipe at the top of the sludge crusher casing 1 to the next equipment for further purification. This utilizes the sludge treatment system to purify the sand and gravel, completely eliminating "internal seepage pollution" and eliminating the need for an additional sand and gravel purification system. This significantly reduces equipment size and investment costs. Furthermore, the crushed sand and gravel can be used as aggregate for sludge solidification, achieving resource recycling and preventing secondary pollution at its source.

[0034] Example 2

[0035] Based on Example 1, such as Figure 1 As shown, the multi-stage crushing mechanism also includes a crushing mounting shaft 28, which is vertically fixed in the left crushing chamber 3. A crushing shaft 29 is rotatably connected to the crushing mounting shaft 28. A crushing cone 6 is eccentrically fixed to the top of the crushing shaft 29. The inner wall of the sludge crusher housing 1 is inclined at the position corresponding to the crushing cone 6. The gap between the inclined surface and the crushing cone 6 gradually decreases from top to bottom. Several crushing cones 30 are densely fixed on the inclined surface. Since the crushing cone 6 is conical in shape, it can guide sand and gravel to fall between the inclined surface and the crushing cone 6. The crushing shaft 29 drives the crushing cone 6 to rotate eccentrically, so that the crushing cone 6 squeezes the sand and gravel towards the crushing cones 30. This can quickly and effectively crush sand and gravel, and can crush large pieces of sand and gravel into small pieces, which is convenient for subsequent shearing operations.

[0036] Example 3

[0037] Based on Example 2, such as Figures 1 to 6As shown, the movable shearing disc 7 is arranged below the fixed shearing disc 8. The movable shearing disc 7 is movably sleeved on the crushing mounting shaft 28, and the fixed shearing disc 8 is fixedly sleeved on the crushing mounting shaft 28. Multiple second discharge ports 10 are evenly distributed along the circumference of the fixed shearing disc 8. A shearing blade 31 is provided between each two adjacent second discharge ports 10. The shearing blade 31 is fixed to the bottom surface of the fixed shearing disc 8. Multiple arc-shaped shearing plates 32 are fixed around the circumference of the second discharge ports 10 at the bottom of the fixed shearing disc 8. The inner circle of the arc-shaped shearing plates 32 is provided with shearing serrations. Multiple first discharge ports 9 Multiple shear blades 33 are evenly distributed along the circumference of the moving shear disc 7. The top surface of the moving shear disc 7 is fixed around the circumference of the first discharge port 9. The shear blades 33 are located within the inner ring of the arc-shaped shear plate 32. A first cutting edge 34 is provided at the end of the shear blade 33 furthest from the moving shear disc 7. The first cutting edge 34 cooperates with the shear plate 31 to complete the shearing action. A second cutting edge 35 is formed on the side of the shear blade 33 near the arc-shaped shear plate 32. The second cutting edge 35 cooperates with the shearing teeth of the arc-shaped shear plate 32 to complete the shearing action. The crushed sand and gravel pass through the second discharge port. 10 falls into the fixed shearing disc 8, with the first cutting edge 34 parallel to the shearing blade 31. The moving shearing disc 7 then drives the shearing blade body 33 to rotate at high speed, making the shearing direction of the first cutting edge 34 perpendicular to the falling direction of the sand and gravel. This causes the sand and gravel to be subjected to the shearing force of the first cutting edge 34, thus cutting the sand and gravel. However, when encountering harder stones, the stones are not immediately cut, causing them to move radially under the impact force and eventually fall from the outside of the shearing blade body 33, resulting in poor shearing effect. Therefore, a first cutting edge is set on the outside of the stone's path. The shearing action of the shear blade 34, combined with the shearing action of the arc-shaped shear plate 32, causes the stone to enter between the second cutting edge 35 and the arc-shaped shear plate 32 under the impact of the shearing blade 33 and centrifugal force. Through the squeezing action of the shearing blade, the second cutting edge 35 and the shearing teeth simultaneously cut the stone. By cutting from both sides at the same time, the hard stone can be effectively sheared and cut into smaller sizes, which makes the subsequent grinding effect of sand and gravel better and can be fully mixed with sludge. The sheared sand and gravel fall into the grinding assembly through the first feed port 9 for grinding.

[0038] Furthermore, the arc-shaped shear plate 32 is inclined toward the center of the fixed shear plate 8, so that the distance between the second cutting edge 35 and the shearing teeth gradually decreases from top to bottom, and the maximum distance between the second cutting edge 35 and the shearing teeth is greater than the volume of the stone, so that the stone can fly into the space between the second cutting edge 35 and the shearing teeth. With the rotation and extrusion of the moving shear plate 7, the second cutting edge 35 and the shearing teeth can cut the stone into pieces. The cut stone falls from the space between the second cutting edge 35 and the shearing teeth. The shearing blade 33 is inclined radially toward the moving grinding ring 11. The top surface of the fixed shear plate 8 is provided with an annular guide groove 36. The second discharge port 10 is opened in the annular guide groove 36. The radial width of the annular guide groove 36 gradually decreases from top to bottom. The crushing space is located within the area covered by the annular guide groove 36, so that the crushed sand and gravel fall into the annular guide groove 36. Guided by the annular guide groove 36, the sand and gravel can quickly enter the shearing assembly through the second discharge port 10.

[0039] Example 4

[0040] Based on Example 3, such as Figures 1 to 8 As shown, the inner diameter of the moving grinding ring 11 gradually decreases from top to bottom. Several wide blades 37 are tightly fixed to the inner wall of the moving grinding ring 11 along its circumference. The fixed grinding body 12 is fixedly mounted on the crushing mounting shaft 28. A threaded cutter 38 is fixedly installed on the fixed grinding body 12. The gap between the threaded cutter 38 and the wide blades 37 gradually decreases from top to bottom. The inner ring of the moving grinding ring 11 is a cone with a diameter that gradually decreases from top to bottom, which guides the shredded sand and gravel into the space between the outer wall of the fixed grinding body 12 and the inner wall of the moving grinding ring 11. The initial grinding of the sand and gravel is completed by the cooperation of the threaded cutter 38 and the wide blades 37. The crushing mounting shaft 28 provides mounting support for the multi-stage crushing mechanism and protects the crushing shaft 29 from damage caused by sand and gravel impacts.

[0041] Example 5

[0042] Based on Example 4, such as Figures 1 to 8As shown, a grinding cone 39 is fixed to the bottom of the fixed grinding body 12. The diameter of the grinding cone 39 gradually increases from top to bottom. Several grinding rods 40 are fixed to the circumference of the side wall of the grinding cone 39. Several fine blades 41 are tightly fixed to the inner wall of the moving grinding ring 11 along its own circumference. The gap between the fine blades 41 and the grinding cone 39 gradually decreases from top to bottom. The number of fine blades 41 is greater than the number of wide blades 37. Both the wide blades 37 and the fine blades 41 are inclined. The horizontal distance between the wide blades 37 and the center of the fixed grinding body 12 gradually decreases from top to bottom, while the horizontal distance between the fine blades 41 and the center of the fixed grinding body 12 gradually increases from top to bottom. To avoid the blades wearing out too quickly due to the large particle size of the sand and gravel, a certain method is adopted. Using a gradual grinding method, the sand and gravel are first initially ground by the cooperation of the wide blade 37 and the threaded blade 38. The initially ground sand and gravel fall between the fine blade 41 and the grinding rod 40. The fine blade 41 and the grinding rod 40 work together to finely grind the sand and gravel, forming sand and gravel powder that can be fully mixed into the sludge. The fine blade 41 and the wide blade 37 are tilted in opposite directions, so that a grinding space with a gradually decreasing gap can be formed between the fine blade 41 and the grinding cone 39, allowing the initially ground sand and gravel to easily enter the grinding space. The ground sand and gravel fall to the bottom of the left crushing chamber 3. Because the sand and gravel are soaked in sewage, the sand and gravel powder is viscous. The sand and gravel powder can be sent into the right desludge chamber 4 by the sludge pump 13.

[0043] Example 6

[0044] Based on Example 5, such as Figures 1 to 9As shown, a shearing shoulder 42 is formed on the moving shearing disc 7, and an annular shearing drive groove 43 is formed at the position of the shearing shoulder 42 in the left crushing chamber 3. A shearing gear 44 is fitted on the shearing shoulder 42. A grinding shoulder 45 is formed on the moving grinding ring 11, and an annular grinding drive groove 46 is formed at the position of the grinding shoulder 45 in the left crushing chamber 3. A grinding gear 47 is fitted on the grinding shoulder 45, and the grinding gear 47 meshes with the grinding main gear 48. The shearing gear 44 meshes with the shearing main gear 49. A drive shaft 50 is rotatably mounted on the crusher housing 1. Both the grinding main gear 48 and the shearing main gear 49 are fitted on the drive shaft 50. The top of the drive shaft 50 is connected to the output shaft of the drive motor 51 via a coupling. The bottom of the drive shaft 50 is connected to the crushing drive pulley 52, and the bottom of the crushing shaft 29 is connected to the crushing driven pulley 53. The crushing drive pulley 52 is connected to the crushing synchronous belt. The driven pulley 53 of the crushing assembly is connected to the drive motor 51, which drives the drive shaft 50 to rotate. The drive shaft 50 simultaneously drives the shearing main gear 49, the grinding main gear 48, and the crushing drive pulley 52 to rotate. The shearing main gear 49 drives the moving shearing disc 7 to rotate through meshing with the shearing gear 44. The grinding main gear 48 drives the moving grinding ring 11 to rotate through meshing with the grinding gear 47. The crushing drive pulley 52 drives the driven pulley 53 of the crushing assembly through the crushing synchronous belt 54. The driven pulley 53 drives the crushing cone 6 to rotate through the crushing shaft 29. Thus, a single power source can simultaneously drive the crushing assembly, shearing assembly, and grinding assembly. The grinding gear 47 is protected by the annular grinding drive groove 46, and the shearing gear 44 is protected by the annular shearing drive groove 43, ensuring that the grinding gear 47 and shearing gear 44 are not affected by sand and gravel, thus ensuring stable operation. In specific implementation, the moving shearing disc 7 is mounted with bearings, and the moving grinding ring 11 is mounted with shaft bearings, allowing for adjustment of the grinding gap.

[0045] Example 7

[0046] Based on Example 6, such as Figures 1 to 11As shown, the moving grinding ring 11 has the freedom to move along its own axial direction, used to adjust the gap between the fine blade 41 and the fixed grinding body 12. The axial length of the grinding main gear 48 is greater than the axial length of the grinding gear 47. An annular stepped groove is provided at the bottom of the grinding shoulder 45, and the annular stepped groove is coaxial with the grinding shoulder 45. The annular stepped groove includes a large-diameter ring 55 and a small-diameter ring 56. The bottom of the sludge crusher housing 1 is provided with multiple support structures, including a screw 57, a limiting plate 58, and a gasket 59. 7. A threaded connection is made to the bottom of the sludge crusher housing 1. A limiting disc 58 is movably disposed within the large diameter ring 55. The outer diameter of the limiting disc 58 is smaller than the inner diameter of the large diameter ring 55. The tail of the screw 57 passes through the small diameter ring 56 and connects to the limiting disc 58. Several washers 59 are fitted on the screw 57. The washers 59 contact the bottom of the sludge crusher housing 1. By adjusting the number of washers 59 on the screw 57, the height of the tail of the screw 57 is adjusted, thereby adjusting the height position of the limiting disc 58, so that the moving grinding ring 11 can move slightly along its own axial direction. The adjustment mechanism is used to adjust the gap between the fine blade 41 and the fixed grinding body 12, thereby controlling the grinding particle size of the sand and gravel. This allows for precise control of the sand and gravel particle size based on the application scenario of the sludge, ensuring optimal performance of the sand and gravel mixture. Since the screw 57 cannot be removed, two semi-annular washers are used for the washers 59 to facilitate their installation and removal. The washers 59 can be removed by loosening the screw 57. After installation, tightening the screw 57 allows the limiting disc 58 to rotate within the large-diameter ring 55. The screw 57's rotational movement is restricted, and the height change of the screw 57 can drive the moving grinding ring 11 to move through the limiting plate 58, thereby achieving height adjustment of the moving grinding ring 11. Secondly, the axial length of the grinding main gear 48 is greater than the axial length of the grinding gear 47, so that even if the height of the moving grinding ring 11 is adjusted, the grinding main gear 48 and the grinding gear 47 can still be in a meshing state. Furthermore, the coaxial arrangement of the annular stepped groove and the grinding shoulder 45 ensures that the moving grinding ring 11 will not interfere with the support structure when it rotates.

[0047] Example 8

[0048] Based on Example 7, such as Figure 1 and Figure 2As shown, the hollow centrifuge cylinder 5 includes a hollow ring 16 and filter rods 17. Several filter rods 17 are fixed to both ends of the hollow ring 16, and are evenly distributed along the circumference of the hollow ring 16. A drive seat 18 is fixed to the inner top wall of the right desliming chamber 4. The drive seat 18 has mounting holes 20 for the hollow centrifuge cylinder 5 to pass through. The hollow ring 16 is rotatably mounted in the mounting holes 20. A mud inlet pipe 19 is connected to the sludge crusher housing 1, extending into the hollow centrifuge cylinder 5. A through hole is provided on the partition plate 2 for the bottom end of the hollow centrifuge cylinder 5 to pass through. A drive chamber 21 is provided inside the drive seat 18, and a bearing 22 is mounted inside the drive chamber 21. The hollow ring 16 is mounted on the inner ring of the bearing 22. A driven pulley 23 is fitted on the hollow ring 16. A drive shaft 24 is rotatably mounted on the top of the sludge crusher housing 1, and a drive pulley 25 is fitted on the drive shaft 24. The drive pulley 25 is connected to the same... The driven belt 26 is connected to the driven pulley 23. The top of the sludge crusher housing 1 is equipped with a motor 27. The output shaft of the motor 27 is connected to the drive shaft 24 through a coupling. The motor 27 drives the drive shaft 24 to rotate, and the drive shaft 24 drives the drive pulley 25 to rotate. The drive pulley 25 drives the driven pulley 23 to rotate through the synchronous belt 26, which in turn drives the hollow ring 16 to rotate. The hollow ring 16 drives the entire hollow centrifuge cylinder 5 to rotate, thus realizing the desliming action of sand and gravel. The sludge inlet pipe 19 is equipped with a sludge pump body, which can transport the sludge at the target location into the hollow centrifuge cylinder 5. Two sealing rings 60 are fitted on the hollow ring 16. The sealing rings 60 are interference-fitted to the inner wall of the mounting hole 20. The bearing 22 and the driven pulley 23 are both located between the two sealing rings 60, which can seal the drive cavity 21 and prevent sludge from entering the drive cavity 21 and affecting the transmission of the driven pulley 23.

Claims

1. A sludge crushing treatment device, comprising a sludge crusher housing, characterized in that, A partition plate is fixed inside the sludge crusher housing, dividing the housing into a left crushing chamber and a right desliming chamber. The left crushing chamber and the right desliming chamber are respectively equipped with a multi-stage crushing mechanism and a centrifugal desliming mechanism. The centrifugal desliming mechanism includes an inclined, perforated centrifugal cylinder rotatably mounted on the sludge crusher housing, with one end extending into the left crushing chamber. The multi-stage crushing mechanism includes a crushing component, a shearing component, and a grinding component arranged sequentially from top to bottom. The crushing component includes a rotatably mounted crushing cone with a gradually increasing diameter from top to bottom. The crushing cone rotates eccentrically to allow it to interact with the left crushing chamber. A gradually changing crushing space is formed between the inner walls of the chambers. The shearing assembly includes a moving shearing disc and a fixed shearing disc. The moving shearing disc has multiple first discharge ports extending through its own axis, and the fixed shearing disc has multiple second discharge ports extending through its own axis. The moving shearing disc cooperates with the fixed shearing disc along its own axis to form a shearing surface. The grinding assembly includes a moving grinding ring and a fixed grinding body. The fixed grinding body is coaxially fixed to the inner ring of the moving grinding ring. A grinding gap is formed between the inner wall of the moving grinding ring and the outer wall of the fixed grinding body. The sludge crusher housing is equipped with a sludge pump. The inlet port of the sludge pump is connected to the left crushing chamber through a first pipe, and the outlet port of the sludge pump is connected to the right desludge chamber through a second pipe. The multi-stage crushing mechanism further includes a crushing mounting shaft, which is vertically fixed inside the left crushing chamber. A crushing shaft is rotatably connected to the crushing mounting shaft, and a crushing cone is eccentrically fixed to the top of the crushing shaft. The inner wall of the crusher housing is inclined at the position corresponding to the crushing cone, and the gap between the inclined surface and the crushing cone gradually decreases from top to bottom. Several crushing cones are densely fixed on the inclined surface. The moving shear plate is arranged below the fixed shear plate and is movably sleeved on the crushing mounting shaft. The fixed shear plate is fixedly sleeved on the crushing mounting shaft. Multiple second discharge ports are evenly distributed along the circumference of the fixed shear plate, and a shearing device is provided between each adjacent second discharge port. A cutting blade is fixed to the bottom surface of a fixed shearing disc. Multiple arc-shaped shearing plates are fixed around the circumference of the second discharge port on the bottom of the fixed shearing disc. The inner ring of each arc-shaped shearing plate has shearing serrations. Multiple first discharge ports are evenly distributed along the circumference of a moving shearing disc. Multiple shearing blades are fixed to the top surface of the moving shearing disc around the circumference of the first discharge port. Each shearing blade is located within the inner ring of the arc-shaped shearing plates. A first cutting edge is provided at the end of each shearing blade away from the moving shearing disc. The first cutting edge cooperates with the shearing blade to complete the shredding action. A second cutting edge is formed on the side of each shearing blade near the arc-shaped shearing plates. The second cutting edge cooperates with the shearing serrations of the arc-shaped shearing plates to complete the shredding action.

2. A disintegrating sludge treatment device according to claim 1, characterized in that The hollow centrifuge cylinder includes a hollow ring and filter rods. Several filter rods are fixed at both ends of the hollow ring and are evenly distributed along the circumference of the hollow ring. A drive seat is fixed to the inner top wall of the right desliming chamber. The drive seat has an installation hole for the hollow centrifuge cylinder to pass through. The hollow ring is rotatably assembled into the installation hole. A mud inlet pipe is connected to the mud crusher housing and extends into the hollow centrifuge cylinder.

3. A disintegrating type sludge treatment device according to claim 2, wherein The drive housing has a drive cavity, and a bearing is installed in the drive cavity. A hollow ring is installed in the inner ring of the bearing, and a driven pulley is fitted on the hollow ring. A drive shaft is rotatably installed on the top of the sludge crusher housing, and a drive pulley is fitted on the drive shaft. The drive pulley is connected to the driven pulley via a synchronous belt drive. A motor is installed on the top of the sludge crusher housing, and the output shaft of the motor is connected to the drive shaft via a coupling.

4. The break-up type sludge treatment device according to claim 1, wherein The arc-shaped shearing plate is inclined toward the center of the fixed shearing disc to make the distance between the second cutting edge and the shearing teeth gradually decrease from top to bottom. The shearing blade body is radially inclined toward the moving grinding ring. The top surface of the fixed shearing disc is provided with an annular guide groove, and the second discharge port is opened in the annular guide groove. The radial width of the annular guide groove gradually decreases from top to bottom.

5. A disintegrating type sludge treatment device according to claim 4, wherein The inner diameter of the moving grinding ring gradually decreases from top to bottom. Several wide blades are tightly fixed on the inner wall of the moving grinding ring along its own circumference. The fixed grinding body is fixedly mounted on the crushing mounting shaft. A threaded cutter is fixedly installed on the fixed grinding body. The gap between the threaded cutter and the wide blades gradually decreases from top to bottom.

6. A disintegrating type sludge treatment device according to claim 5, wherein A grinding cone is fixed to the bottom of the fixed grinding body. The diameter of the grinding cone gradually increases from top to bottom. Several grinding rods are fixed to the circumference of the side wall of the grinding cone. Several fine blades are tightly fixed to the inner wall of the moving grinding ring along its own circumference. The gap between the fine blades and the grinding cone gradually decreases from top to bottom. The number of fine blades is greater than the number of wide blades. Both the wide blades and the fine blades are inclined. The horizontal distance between the wide blades and the center of the fixed grinding body gradually decreases from top to bottom, while the horizontal distance between the fine blades and the center of the fixed grinding body gradually increases from top to bottom.

7. A disintegrating type sludge treatment device according to claim 6, wherein A shearing shoulder is formed on the moving shearing disc. An annular shearing drive groove is formed at the position of the shearing shoulder in the left crushing chamber. A shearing gear is fitted on the shearing shoulder. A grinding shoulder is formed on the moving grinding ring. An annular grinding drive groove is formed at the position of the grinding shoulder in the left crushing chamber. A grinding gear is fitted on the grinding shoulder. The grinding gear meshes with a grinding main gear. The shearing gear meshes with a shearing main gear. A drive shaft is rotatably mounted on the crusher housing. Both the grinding main gear and the shearing main gear are fitted on the drive shaft. The top of the drive shaft is connected to the output shaft of the drive motor via a coupling. The bottom of the drive shaft is connected to a crushing drive pulley. The bottom of the crushing shaft is connected to a crushing driven pulley. The crushing drive pulley is connected to the crushing driven pulley via a crushing synchronous belt.

8. A disintegrating type sludge treatment device according to claim 7, wherein The moving grinding ring has the freedom to move along its own axis, which is used to adjust the gap between the fine blade and the fixed grinding body. The axial length of the grinding main gear is greater than the axial length of the grinding gear.

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