A water conservancy project sludge dewatering and solidification treatment equipment

Abstract

This invention provides a sludge dewatering and solidification treatment device for hydraulic engineering, belonging to the field of sludge treatment technology. It includes a treatment tank, and further comprises a sludge input component, a solidified material input component, a control component, a centrifugal mixing component, and a pneumatic turning and stirring component. The sludge input component and the solidified material input component are installed opposite each other on the upper part of the treatment tank. The control component is installed on the treatment tank and is used to control the horizontal movement of the sludge input component and the solidified material input component. The centrifugal mixing component is sleeved on the outside of the discharge end of the sludge input component and the solidified material input component. The pneumatic turning and stirring component is installed on the lower inner side of the treatment tank and is used to pneumatically turn and secondary stir the material discharged from the centrifugal mixing component. This invention adjusts the feeding distance through the control component and combines centrifugal mixing and pneumatic turning to achieve multi-stage powerful stirring, effectively solving the problem of uneven mixing of sludge and solidified material, and significantly improving the solidification efficiency and strength.

Description

Technical Field

[0001] This invention relates to the field of sludge treatment technology, and more specifically, to a device for dewatering and solidifying sludge in water conservancy projects. Background Technology

[0002] In the fields of water conservancy engineering and environmental governance, the dewatering and solidification treatment of sludge is a crucial step in achieving resource utilization and volume reduction. Traditional sludge treatment equipment often employs simple mechanical stirring or gravity thickening methods, which not only have low mixing efficiency but also fail to ensure uniform contact between the sludge and solidifying agents (such as cement, lime, and fly ash), leading to incomplete solidification reactions and ultimately affecting the strength and stability of the solidified soil. Furthermore, existing equipment lacks flexibility in feed control, failing to dynamically adjust material ratios and mixing modes based on the actual moisture content and composition fluctuations of the sludge. This easily results in reagent waste or substandard solidification effects, making it difficult to meet the demands of modern engineering for efficient and high-quality sludge treatment.

[0003] Meanwhile, with the tightening of environmental standards and the shortening of construction cycles, the traditional extensive model of "mixing first, then stockpiling, and then curing" has gradually revealed its drawbacks. Especially in the synergistic reaction of multi-component materials, uneven initial mixing directly affects the progress of cement hydration and alkali-activated reactions, leading to slow early strength development of the solidified body, and even quality problems such as localized softening and mudding. Therefore, there is an urgent need for a sludge dewatering and solidification treatment equipment that can achieve on-demand material feeding, multi-stage efficient mixing, and good adaptability to overcome the technical bottlenecks of uneven mixing, delayed reaction, and unstable strength in existing technologies. Summary of the Invention

[0004] The purpose of this invention is to provide a dewatering and solidification treatment device for silt in water conservancy projects, which aims to solve the problems mentioned in the background art.

[0005] The present invention is implemented as follows: a sludge dewatering and solidification treatment device for water conservancy projects, including a treatment box, a discharge pipe provided in the middle of the bottom of the treatment box, and a support frame fixed at the bottom of the treatment box; it also includes a sludge input component, a solidified material input component, a control component, a centrifugal mixing component, and a pneumatic material turning and stirring component; The sludge input component and the solidified material input component are installed opposite each other on the upper part of the processing box, with the end of the two closest to each other being the discharge end; The control component is installed on the processing box and is used to control the horizontal movement of the sludge input component and the solidified material input component, and to adjust the horizontal distance between their discharge ends. The centrifugal mixing component is sleeved on the outside of the discharge end of the sludge input component and the solidified material input component, and is used to perform centrifugal initial mixing of the material discharged from the discharge end. The pneumatic material turning and mixing component is installed inside the lower part of the processing box and is used to pneumatically turn and secondary stir and mix the material discharged from the centrifugal mixing component.

[0006] Optionally, the sludge input assembly includes a sludge inlet cylinder, a sludge conveying shaft, a sludge conveying auger, a first power source, and a sludge feeding hopper; the sludge inlet cylinder is horizontally arranged and slidably connected to the side wall of the treatment tank, with the inner end of the sludge inlet cylinder serving as the discharge end; the sludge conveying shaft is coaxially mounted on the inner side of the sludge inlet cylinder, and the sludge conveying auger is fixed to the sludge conveying shaft; the first power source is mounted on the outer end of the sludge inlet cylinder and is drively connected to the sludge conveying shaft; the sludge feeding hopper is mounted on the upper side of the outer end of the sludge inlet cylinder.

[0007] Optionally, the sludge conveying auger has a variable pitch spiral blade structure, with the pitch gradually decreasing from the feed end to the discharge end, and the blade edges are provided with arc-shaped scraping teeth.

[0008] Optionally, the curing material input assembly includes a curing material inlet cylinder, a curing material conveying shaft, a curing material conveying auger, a second power source, and a curing material dispensing hopper; the curing material inlet cylinder is horizontally arranged and slidably connected to the side wall of the processing tank, with the inner end of the curing material inlet cylinder serving as the discharge end; the curing material conveying shaft is coaxially mounted on the inner side of the curing material inlet cylinder, and the curing material conveying auger is fixed on the curing material conveying shaft; the second power source is mounted on the outer end of the curing material inlet cylinder and is drively connected to the curing material conveying shaft; the curing material dispensing hopper is mounted on the upper side of the outer end of the curing material inlet cylinder.

[0009] Optionally, the solidified material conveying auger has a two-section structure, with a constant pitch conveying section at the front end and a variable diameter crushing section at the rear end. Replaceable carbide crushing blades are arranged alternately on the spiral blades of the crushing section.

[0010] Optionally, the control component includes a first telescopic drive and a second telescopic drive; the first telescopic drive and the second telescopic drive are horizontally fixed on both sides of the processing box, and their output ends are fixedly connected to the outer ends of the sludge inlet cylinder and the solidified material inlet cylinder, respectively.

[0011] Optionally, the centrifugal mixing assembly includes a centrifuge cylinder, a central mixing rod, mixing teeth, side mixing rods, a rotating ring seat, a positioning ring seat, a driven gear ring, a third power source, and a main gear. The centrifuge cylinder is a double-frustum docking structure with an annular constriction in the middle, sleeved on the outside of the discharge end of the sludge input assembly and the solidified material input assembly, and coaxial with both. The central mixing rods are circumferentially distributed and fixed in the middle of the inner side of the centrifuge cylinder, with the inner ends of multiple central mixing rods fixedly connected to each other, and multiple mixing teeth fixed on both sides of the central mixing rods. The side mixing rods are staggered and fixed to the inner walls of both sides of the centrifuge cylinder. The rotating ring seat is fixedly connected to the outer wall of the centrifuge cylinder through a fixing rod, and the rotating ring seat is rotatably mounted on the positioning ring seat. The positioning ring seat is fixed to the inner wall of the treatment box through an external support arm. The driven gear ring is fixed to the outside of the rotating ring seat, the third power source is fixed to the top of the treatment box, and the main gear is fixed to the output end of the third power source and meshes with the driven gear ring.

[0012] Optionally, the annular constriction angle of the centrifuge tube is 30°-60°, and the cone angles on both sides of the double frustum docking structure are 15°-30°.

[0013] Optionally, the pneumatic material turning and turbulence assembly includes a guide cone plate, a third telescopic drive component, an air push box, an air push plate, a vertical support column, a rotating cylinder, a discharge mandrel, a discharge lever, a bushing, and a fourth power source; the guide cone plate is slidably disposed on the lower inner side of the processing box and has a conical structure with a discharge port in the middle; the third telescopic drive component is circumferentially distributed and fixed on the lower outer side of the guide cone plate, and the cylinder body is fixed to the inner wall of the processing box; the air push box is disposed on both lower sides of the guide cone plate, the air push plate is slidably disposed on the inner side of the air push box, and the lower end of the vertical support column is fixed to the bottom of the processing box. The upper end is fixed to the air push plate; the guide cone plate has a push hole that communicates with the inner cavity of the air push box, and a first one-way valve is installed in the push hole. An auxiliary air passage is opened in the vertical support, and a second one-way valve is installed at the upper end of the auxiliary air passage; the rotating cylinder is rotatably installed on the lower side of the material outlet of the guide cone plate, the discharge mandrel is coaxially set on the inner side of the rotating cylinder, the discharge lever is circumferentially fixed to the lower end of the discharge mandrel and the outer end is fixed to the inner wall of the rotating cylinder; the upper part of the discharge mandrel is a prism structure and a bushing is slidably fitted on it, and the fourth power source is fixed on the lower side of the positioning ring seat and is connected to the bushing for transmission.

[0014] The present invention provides a dewatering and solidification treatment device for silt in water conservancy projects, which has the following beneficial effects: By setting up relatively arranged sludge input components and solidified material input components, and coordinating with control components to adjust the horizontal distance between their discharge ends, the drop position and initial mixing state of sludge and solidified material can be flexibly controlled. Further, combined with a centrifugal mixing component, the centrifugal force generated by high-speed rotation is used to perform preliminary strong shearing and mixing of the material, ensuring uniform discharge from both ends of the centrifuge. Finally, a pneumatic turning and mixing component is used to pneumatically turn and secondary stir the discharged material, realizing a multi-stage mixing process from controllable feeding to centrifugal initial mixing and then to pneumatic remixing. This effectively solves the problems of low solidification strength and insufficient reaction caused by uneven mixing of sludge and solidifying agent in traditional equipment, significantly improving the treatment efficiency and final solidification quality of sludge dewatering and solidification in water conservancy projects.

[0015] In summary, this invention effectively solves the problem of uneven mixing of sludge and solidified material by adjusting the feeding spacing through control components and combining centrifugal mixing and pneumatic turning to achieve multi-stage powerful stirring, thus significantly improving the curing efficiency and strength.

[0016] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0018] Figure 1 A schematic diagram of the overall structure of the sludge dewatering and solidification treatment equipment for water conservancy projects provided in an embodiment of the present invention; Figure 2 Axonometric drawing of a sludge dewatering and solidification treatment device for water conservancy projects provided in an embodiment of the present invention; Figure 3 for Figure 2 A magnified structural diagram of part A in the middle; Figure 4 for Figure 2 A magnified structural diagram of part B in the middle section; Figure 5 This is a schematic diagram of the structure of the removal and treatment box of the sludge dewatering and solidification treatment equipment for water conservancy projects provided in an embodiment of the present invention; Figure 6 for Figure 5 A schematic diagram of the structure viewed from below.

[0019] In the diagram: 1-First power source, 2-Sludge feeding hopper, 3-Sludge inlet cylinder, 4-First telescopic drive component, 5-Second power source, 6-Solidified material feeding hopper, 7-Solidified material inlet cylinder, 8-Second telescopic drive component, 9-Processing box, 10-Discharge pipe, 11-Supporting legs, 12-Sludge conveying shaft, 13-Sludge conveying auger, 14-Solidified material conveying shaft, 15-Solidified material conveying auger, 16-Centrifuge cylinder, 17-Guide cone plate, 18-Third telescopic drive component. 19-Central mixing rod, 20-Mixing tooth, 21-Side mixing rod, 22-Fixed rod, 23-Rotating ring seat, 24-Positioning ring seat, 25-Main gear, 26-Third power source, 27-Driven gear ring, 28-Air push box, 29-Air push plate, 30-Vertical support column, 31-Auxiliary air passage, 32-Rotating cylinder, 33-Discharge lever, 34-Discharge mandrel, 35-Busset, 36-Fourth power source, 37-Push hole, 38-Transmission port, 39-External support arm. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] like Figure 1-6 As shown, an embodiment of the present invention provides a sludge dewatering and solidification treatment device for water conservancy projects, including a treatment box 9. The bottom of the treatment box 9 is conical, and a discharge pipe 10 is provided in the middle of the bottom of the treatment box 9 to facilitate the discharge of the treated sludge, that is, to discharge the uniformly mixed mud material, which can be directly piled into a trapezoidal pile. The process is as follows: natural curing at room temperature for 1-3 days, the sludge contains moisture, triggering cement hydration + lime-alkali activation of fly ash, the material automatically changes from thin mud to hard blocks, not scattered or muddy; it basically reaches the landfill strength in 7 days, and the strength is completely stable in 28 days.

[0023] The lower part of the processing box 9 is also circumferentially fixed with support legs 11, which can stably support the device and facilitate the transfer of discharged mud. It also includes: The sludge input component and the solidified material input component are installed opposite each other on the upper part of the processing box 9. The end of the sludge input component and the solidified material input component that is close to each other is the discharge end. The processing box 9 is also equipped with a control component for controlling the horizontal movement of the sludge input component and the solidified material input component. A centrifugal mixing component is provided, wherein a centrifugal mixing component is sleeved and installed on the outside of the discharge end of the sludge input component and the solidified material input component, and the centrifugal mixing component is used to mix the materials discharged from the discharge end of the sludge input component and the solidified material input component evenly. A pneumatic material turning and mixing component is installed on the lower inner side of the processing box 9. The pneumatic material turning and mixing component is used to pneumatically turn and stir the materials discharged from both ends of the centrifugal mixing component.

[0024] This invention, by setting up a sludge input component and a solidified material input component arranged in opposite directions, and coordinating with a control component to adjust the horizontal distance between their discharge ends, can flexibly control the drop position and initial mixing state of the sludge and solidified material. Furthermore, by combining a centrifugal mixing component, the centrifugal force generated by high-speed rotation is used to perform preliminary strong shearing and mixing of the material, allowing the material to be evenly discharged from both ends of the centrifuge cylinder 16. Finally, a pneumatic turning and mixing component is used to pneumatically turn and secondary stir the discharged material, realizing a multi-stage mixing process from controllable feeding to centrifugal initial mixing to pneumatic remixing. This effectively solves the problems of low solidification strength and insufficient reaction caused by uneven mixing of sludge and solidifying agent in traditional equipment, significantly improving the treatment efficiency and final solidification quality of sludge dewatering and solidification in water conservancy projects.

[0025] like Figure 1-2 As shown in Figures 5-6, in one embodiment, the sludge input component includes a horizontally arranged sludge inlet cylinder 3, the inner end of which is the discharge end. The sludge inlet cylinder 3 is slidably connected to the side wall of the processing box 9. A sludge conveying shaft 12 is coaxially installed on the inner side of the sludge inlet cylinder 3. A sludge conveying auger 13 is fixed on the sludge conveying shaft 12. A first power source 1, which is connected to the sludge conveying shaft 12, is installed at the outer end of the sludge inlet cylinder 3. A sludge feeding hopper 2 for holding sludge is installed on the upper side of the outer end of the sludge inlet cylinder 3.

[0026] The solidified material input assembly includes a horizontally arranged solidified material inlet cylinder 7, with its inner end serving as the outlet. The solidified material inlet cylinder 7 is slidably and sealed to the side wall of the processing tank 9. A solidified material conveying shaft 14 is coaxially mounted on the inner side of the solidified material inlet cylinder 7, and a solidified material conveying auger 15 is fixed to the solidified material conveying shaft 14. A second power source 5, which is drively connected to the solidified material conveying shaft 14, is installed at the outer end of the solidified material inlet cylinder 7. A solidified material feeding hopper 6 for holding the solidified material is installed on the upper side of the outer end of the solidified material inlet cylinder 7. The solidified material can be a composite solidified material such as a cement, lime, and fly ash composite. These three materials are mixed into a uniform composite dry powder and then added to the solidified material feeding hopper 6. A commonly used ratio is 30% cement, 20% lime, and 50% fly ash. Generally, the solidified material and sludge are added at a 1:1 ratio.

[0027] The control component includes a first telescopic drive 4 and a second telescopic drive 8. The first telescopic drive 4 and the second telescopic drive 8 are respectively horizontally fixed on both sides of the processing box 9. The output ends of the first telescopic drive 4 and the second telescopic drive 8 are respectively fixedly connected to the outer ends of the sludge inlet cylinder 3 and the solidified material inlet cylinder 7.

[0028] The sludge input component and the solidified material input component can be used to control the conveying of sludge and solidified material to the inside of the treatment box 9, respectively. The superimposed control component can adjust the horizontal movement of the sludge inlet cylinder 3 and the solidified material inlet cylinder 7 through the first telescopic drive component 4 and the second telescopic drive component 8, thereby adjusting the distance between the discharge ends of the sludge input component and the solidified material input component, adjusting the coordination effect with the centrifugal mixing component and the initial mixing effect.

[0029] In a preferred embodiment, the sludge conveying auger 13 on the sludge conveying shaft 12 adopts a variable pitch spiral blade structure, with the pitch gradually decreasing from the feed end to the discharge end, and arc-shaped scraping teeth added to the edge of the blades; this design can compress the sludge volume step by step, break up large-diameter clumps, and at the same time clean the residue on the cylinder wall through the scraping teeth, reducing the risk of blockage and improving conveying efficiency.

[0030] The curing material conveying auger 15 on the curing material conveying shaft 14 is divided into two sections: the front end is a constant pitch conveying section and the rear end is a variable diameter crushing section (the outer diameter of the auger gradually decreases). Replaceable carbide crushing blades are arranged alternately on the spiral blades of the crushing section to efficiently disperse and crush agglomerated particles in the curing material, ensuring the uniformity of the dry powder. The blade surface is coated with a nano-ceramic coating to enhance wear resistance and anti-adhesion ability.

[0031] The control component adjusts the horizontal distance between the sludge input component and the solidified material input component's discharge end based on the real-time moisture content or viscosity of the sludge. Specifically, when the sludge moisture content is higher than a first threshold (e.g., 80%) or the viscosity is lower than a second threshold, the first telescopic drive component 4 and the second telescopic drive component 8 are controlled to shorten the horizontal distance, allowing the sludge and solidified material to directly contact each other after discharge and form a local high-concentration mixing zone. The water absorption of the solidified material is used to quickly reduce the local sludge moisture content, preventing low-viscosity sludge from directly falling into the centrifugal mixing component and causing splashing or mixing failure. When the sludge moisture content is lower than a third threshold (e.g., 60%) or the viscosity is higher than a fourth threshold, the first telescopic drive component 4 and the second telescopic drive component 8 are controlled to increase the horizontal distance, allowing the sludge and solidified material to achieve a longer dispersion and mixing stroke within the centrifugal mixing component. Through this adaptive adjustment of the distance, compatible processing of sludge with different properties is achieved, avoiding waste of solidified material or uneven mixing.

[0032] like Figure 1-3 As shown in Figure 5, in one embodiment, the centrifugal mixing assembly includes a centrifugal cylinder 16 sleeved at the discharge end of the sludge inlet cylinder 3 and the solidified material inlet cylinder 7. The centrifugal cylinder 16 is a double frustum docking structure with an annular constriction in the middle. The centrifugal cylinder 16 is coaxially arranged with the sludge inlet cylinder 3 and the solidified material inlet cylinder 7. Multiple central mixing rods 19 are circumferentially fixed in the middle of the inner side of the centrifugal cylinder 16. The inner ends of the multiple central mixing rods 19 are fixedly connected to each other. Multiple mixing teeth 20 are also fixed on both sides of the central mixing rods 19. Several side mixing rods 21 are also staggered on the inner walls of both sides of the centrifugal cylinder 16. The side mixing rods 21 are perpendicular to the inner walls of the centrifugal cylinder 16, and the inner ends of the side mixing rods 21 are equidistant from the axis of the centrifugal cylinder 16.

[0033] A rotating ring seat 23 is provided on the outer side of the middle part of the centrifuge cylinder 16. Multiple fixing rods 22 are fixedly distributed circumferentially on the inner side of the rotating ring seat 23. The inner end of the fixing rod 22 is fixedly connected to the outer wall of the centrifuge cylinder 16. The rotating ring seat 23 is rotatably mounted on the positioning ring seat 24. An external support arm 39 is fixed on the outer side of the positioning ring seat 24. The outer end of the external support arm 39 is fixedly connected to the inner wall of the processing box 9. A driven gear ring 27 is also fixed on the outer side of the rotating ring seat 23. A third power source 26 is fixed on the inner top of the processing box 9. A main gear 25 that meshes with the driven gear ring 27 is fixed at the output end of the third power source 26. A transmission port 38 is also provided on the positioning ring seat 24. The main gear 25 can be inserted into the inner side of the positioning ring seat 24 and mesh with the driven gear ring 27 through the transmission port 38.

[0034] By setting up the centrifugal mixing component, the main gear 25 is driven to rotate by the third power source 26, and the main gear 25 is meshed with the driven gear ring 27, which can drive the rotating ring seat 23 to rotate stably, thereby driving the centrifugal cylinder 16 to rotate. By utilizing the structure of the centrifugal cylinder 16 and the central mixing rod 19 and mixing teeth 20 set inside it, the materials discharged from the discharge end of the sludge inlet cylinder 3 and the solidified material inlet cylinder 7 can be mixed. Then, the side mixing rod 21 is used in conjunction with the conical structure of the centrifugal cylinder 16 for centrifugal mixing, and the materials are discharged from both ends of the centrifugal cylinder 16.

[0035] In a preferred embodiment, the centrifuge cylinder 16 has an annular constriction design with a gradually narrowing flow channel structure. The constriction angle is adjustable from 30° to 60° (preferably 45°) and is determined through CFD fluid simulation optimization. This design creates a local turbulent zone when the material passes through the constriction, enhancing shearing and radial mixing. The cone angles on both sides of the double-frustum docking structure are 15° to 30° (preferably 22.5°), which promotes the flow and mixing of the material in the centrifugal force field and shortens the mixing time.

[0036] Among the various parameters, when the constriction angle is less than 30°, material is prone to clogging at the constriction; when it is greater than 60°, sufficient local turbulence and shear force cannot be generated. When the cone angle is less than 15°, the material stays in the centrifuge for too long, reducing processing efficiency; when it is greater than 30°, the material discharge speed is too fast, resulting in insufficient mixing time. Through CFD simulation optimization, a 45° constriction angle and a 22.5° cone angle are found to be the optimal combination, achieving the best balance between mixing intensity and processing efficiency.

[0037] like Figure 1 , 2As shown in Figures 4 and 6, in one embodiment, the pneumatic material turning and mixing assembly includes a guide cone plate 17 slidably disposed on the lower inner side of the processing chamber 9. The guide cone plate 17 is a conical structure with a discharge port in the middle. A third telescopic drive member 18 is circumferentially fixed on the lower outer side of the guide cone plate 17. The cylinder of the third telescopic drive member 18 is fixedly connected to the inner wall of the processing chamber 9. An air push box 28 is respectively provided on the lower sides of the guide cone plate 17 along the length direction of the centrifuge cylinder 16. An air push plate 29 is slidably disposed on the inner side of the air push box 28. A vertical support column 30 is fixed on the lower side of the air push plate 29. The lower end of column 30 is fixedly connected to the bottom of processing box 9. The guide cone plate 17 has a push hole 37 communicating with the inner cavity of the air push box 28. A first one-way valve (not shown) is installed on the push hole 37. The first one-way valve allows air inside the air push box 28 to be discharged from the push hole 37 and is closed in the reverse direction. An auxiliary air passage 31 is provided inside the vertical support column 30. The air push box 28 is also connected to the outside through the auxiliary air passage 31. A second one-way valve (not shown) is installed at the upper end of the auxiliary air passage 31. The second one-way valve allows outside air to enter the inner cavity of the air push box 28 through the auxiliary air passage 31 and is closed in the reverse direction. When the guide cone plate 17 moves downward, the air push plate 29 can squeeze the air in the inner cavity of the air push box 28 out through the push hole 37. When the guide cone plate 17 moves upward, outside air can enter the inner cavity of the air push box 28 through the auxiliary air passage 31.

[0038] A rotating cylinder 32 is rotatably mounted on the lower side of the discharge port of the guide cone plate 17. A discharge mandrel 34 is coaxially provided on the inner side of the rotating cylinder 32. Multiple discharge levers 33 are circumferentially fixed at the lower end of the discharge mandrel 34. The outer ends of the discharge levers 33 are fixedly connected to the inner wall of the rotating cylinder 32. The upper part of the discharge mandrel 34 is a prismatic structure. A bushing 35 is slidably provided on the upper part of the discharge mandrel 34. A fourth power source 36 is fixed on the lower side of the positioning ring seat 24 and is connected to the bushing 35 for transmission.

[0039] With the pneumatic material turning and mixing component, the third telescopic drive 18 can drive the guide cone plate 17 to vibrate up and down, which is conducive to the material gathering at the downward feed port. During this process, the air push plate 29 and the vertical support column 30 remain stationary, while the air push box 28 moves up and down, so that compressed air can be intermittently discharged through the push hole 37. The push holes 37 arranged on both sides can push the material to turn over in the middle of the guide cone plate 17, so that the material discharged from both ends of the centrifuge cylinder 16 is turned over and mixed again through the structure of the guide cone plate 17, and then falls to the discharge port and is agitated and mixed by the discharge lever 33. The rotating cylinder 32 can improve the mixing effect and prevent the material from flowing out from the side. The structure of the discharge mandrel 34 and the bushing 35 can be adapted to the up and down movement of the guide cone plate 17.

[0040] The present invention provides a sludge dewatering and solidification treatment device for water conservancy projects in the above embodiments, the working principle of which is as follows: During operation, sludge and solidified material are stored in sludge feeding hopper 2 and solidified material feeding hopper 6, respectively. Driven by the first power source 1 and the second power source 5, they are conveyed to the discharge end via sludge conveying auger 13 and solidified material conveying auger 15. During this process, the first telescopic drive component 4 and the second telescopic drive component 8 can adjust the horizontal distance between the sludge inlet cylinder 3 and the solidified material inlet cylinder 7, thereby controlling the material drop point and initial mixing state, allowing both materials to smoothly enter the centrifuge cylinder 16.

[0041] The third power source 26 drives the main gear 25 to rotate, which in turn drives the driven gear ring 27 and the rotating ring seat 23 to rotate at high speed, thereby driving the centrifuge cylinder 16 to rotate. Inside the centrifuge cylinder 16, the material is subjected to centrifugal and shearing actions by the central mixing rod 19, the mixing teeth 20 and the side mixing rods 21, resulting in thorough high-speed mixing. Finally, the mixed material is thrown out from both ends of the centrifuge cylinder 16 and falls into the area of ​​the guide cone plate 17 below.

[0042] The third telescopic drive component 18 drives the guide cone plate 17 to vibrate up and down. The air push box 28 and the push hole 37 work together to intermittently spray airflow, which turns the falling material towards the center and gathers it. At the same time, the fourth power source 36 drives the discharge mandrel 34 and the discharge lever 33 to rotate, which performs a final disturbance and mixing on the material gathered in the rotating drum 32. After ensuring that the material is uniform, it is discharged through the discharge pipe 10, completing the entire dehydration and solidification process.

[0043] The control of each component can be achieved using a PLC controller disclosed in existing technology. The model and circuit connection of each component are not specifically limited and can be flexibly configured in practical applications. For example, conventional motors can be used for the first power source 1, the second power source 5, the third power source 26, and the fourth power source 36; hydraulic cylinders or electric telescopic cylinders can be used for the first telescopic drive component 4, the second telescopic drive component 8, and the third telescopic drive component 18.

[0044] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this invention does not involve any improvement to the software and methods.

[0045] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] In the description of this specification, references to terms such as "embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A sludge dewatering and solidification treatment device for water conservancy projects, comprising a treatment tank (9), wherein a discharge pipe (10) is provided in the middle of the bottom of the treatment tank (9), and a support frame (11) is fixed to the lower part of the treatment tank (9), characterized in that, It also includes a sludge input component, a solidified material input component, a control component, a centrifugal mixing component, and a pneumatic material turning and stirring component; The sludge input component and the solidified material input component are installed opposite each other on the upper part of the processing box (9), and the end of the two that is close to each other is the discharge end; The control component is installed on the processing box (9) and is used to control the horizontal movement of the sludge input component and the solidified material input component, and to adjust the horizontal distance between their discharge ends; The centrifugal mixing component is sleeved on the outside of the discharge end of the sludge input component and the solidified material input component, and is used to perform centrifugal initial mixing of the material discharged from the discharge end. The pneumatic material turning and mixing component is installed on the lower inner side of the processing box (9) and is used to pneumatically turn and secondary stir and mix the material discharged from the centrifugal mixing component.

2. The sludge dewatering and solidification treatment equipment for water conservancy projects according to claim 1, characterized in that, The sludge input assembly includes a sludge inlet cylinder (3), a sludge conveying shaft (12), a sludge conveying auger (13), a first power source (1), and a sludge feeding hopper (2). The sludge inlet cylinder (3) is horizontally set and is slidably connected to the side wall of the treatment box (9), with the inner end of the sludge inlet cylinder (3) being the discharge end; The sludge conveying shaft (12) is coaxially installed inside the sludge inlet cylinder (3), and the sludge conveying auger (13) is fixed on the sludge conveying shaft (12); The first power source (1) is installed at the outer end of the sludge inlet cylinder (3) and is connected to the sludge conveying shaft (12) for transmission. The sludge feeding hopper (2) is installed on the upper side of the outer end of the sludge inlet cylinder (3).

3. The sludge dewatering and solidification treatment equipment for water conservancy projects according to claim 2, characterized in that, The sludge conveying auger (13) has a variable pitch spiral blade structure, with the pitch gradually decreasing from the feed end to the discharge end, and the blade edge is provided with arc-shaped scraping teeth.

4. The sludge dewatering and solidification treatment equipment for water conservancy projects according to claim 2, characterized in that, The curing material input assembly includes a curing material inlet cylinder (7), a curing material conveying shaft (14), a curing material conveying auger (15), a second power source (5), and a curing material dispensing hopper (6). The curing material inlet cylinder (7) is horizontally arranged and is slidably connected to the side wall of the processing box (9), with the inner end of the curing material inlet cylinder (7) being the discharge end; The curing material conveying shaft (14) is coaxially installed inside the curing material inlet cylinder (7), and the curing material conveying auger (15) is fixed on the curing material conveying shaft (14); The second power source (5) is installed at the outer end of the curing material inlet cylinder (7) and is connected to the curing material conveying shaft (14) for transmission. The solidified material feeding hopper (6) is installed on the upper side of the outer end of the solidified material inlet cylinder (7).

5. The sludge dewatering and solidification treatment equipment for water conservancy projects according to claim 4, characterized in that, The solidified material conveying auger (15) has a two-section structure, with an equal pitch conveying section at the front end and a variable diameter crushing section at the rear end. Replaceable carbide crushing blades are arranged alternately on the spiral blades of the crushing section.

6. The sludge dewatering and solidification treatment equipment for water conservancy projects according to claim 4 or 5, characterized in that, The control component includes a first telescopic drive (4) and a second telescopic drive (8). The first telescopic drive component (4) and the second telescopic drive component (8) are fixed horizontally on both sides of the processing box (9), and their output ends are fixedly connected to the outer ends of the sludge inlet cylinder (3) and the solidified material inlet cylinder (7), respectively.

7. The sludge dewatering and solidification treatment equipment for water conservancy projects according to any one of claims 1-5, characterized in that, The centrifugal mixing assembly includes a centrifugal cylinder (16), a central mixing rod (19), mixing teeth (20), a side mixing rod (21), a rotating ring seat (23), a positioning ring seat (24), a driven gear ring (27), a third power source (26), and a main gear (25). The centrifuge tube (16) is a double frustum docking structure with an annular constriction in the middle, which is sleeved on the outside of the discharge end of the sludge input component and the solidified material input component and is coaxial with both of them. The central mixing rod (19) is circumferentially distributed and fixed in the middle of the inner side of the centrifuge tube (16). The inner ends of multiple central mixing rods (19) are fixedly connected to each other, and multiple mixing teeth (20) are fixed on both sides of the central mixing rod (19). The side mixing rods (21) are staggered and fixed to the inner walls of both sides of the centrifuge tube (16); The rotating ring seat (23) is fixedly connected to the outer wall of the centrifuge tube (16) through the fixing rod (22), and the rotating ring seat (23) is rotatably installed on the positioning ring seat (24). The positioning ring seat (24) is fixed to the inner wall of the processing box (9) through the external support arm (39). The toothed ring (27) is fixed to the outside of the rotating ring seat (23); The third power source (26) is fixed to the top of the processing box (9), and the main gear (25) is fixed to the output end of the third power source (26) and meshes with the driven gear ring (27).

8. The sludge dewatering and solidification treatment equipment for water conservancy projects according to claim 7, characterized in that, The annular constriction angle of the centrifuge tube (16) is 30°-60°, and the cone angles on both sides of the double frustum docking structure are 15°-30°.

9. The sludge dewatering and solidification treatment equipment for water conservancy projects according to claim 7, characterized in that, The pneumatic material turning and turbulence assembly includes a guide cone plate (17), a third telescopic drive component (18), an air push box (28), an air push plate (29), a vertical support column (30), a rotating cylinder (32), a discharge mandrel (34), a discharge lever (33), a bushing (35), and a fourth power source (36). The guide cone plate (17) is slidably disposed on the lower inner side of the processing box (9), and is a cone-shaped structure with a discharge port in the middle. The third telescopic drive component (18) is circumferentially distributed and fixed on the lower outer side of the guide cone plate (17), and the cylinder body is fixed to the inner wall of the processing box (9). The air push box (28) is located on the lower part of both sides of the guide cone plate (17), the air push plate (29) is slidably located inside the air push box (28), the lower end of the vertical support column (30) is fixed to the bottom of the processing box (9), and the upper end is fixed to the air push plate (29); The guide cone plate (17) has a push hole (37) that communicates with the inner cavity of the air push box (28). A first one-way valve is installed on the push hole (37). An auxiliary air passage (31) is opened in the vertical support (30). A second one-way valve is installed at the upper end of the auxiliary air passage (31). The rotating cylinder (32) is rotatably installed on the lower side of the discharge port of the guide cone plate (17), the discharge mandrel (34) is coaxially arranged on the inner side of the rotating cylinder (32), and the discharge lever (33) is circumferentially fixed to the lower end of the discharge mandrel (34) and its outer end is fixed to the inner wall of the rotating cylinder (32); The upper part of the discharge mandrel (34) is a prism structure and a bushing (35) is slidably fitted on it. The fourth power source (36) is fixed to the lower side of the positioning ring seat (24) and is connected to the bushing (35) for transmission.

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