A device for treating sludge after wastewater dewatering

Abstract

The utility model discloses a kind of sludge treatment devices after wastewater dehydration, it is related to sludge treatment equipment technical field, its technical key points include base and fixedly installed box in the top of base, the inner chamber of box is provided with pulverization drying mechanism, pulverization drying mechanism includes the first pulverizing roller of rotation connection in the upper portion of the inner chamber of box, second pulverizing roller, the first end fixedly installed with first pulverizing gear of first pulverizing roller, the utility model is crushed to sludge by the first pulverizing roller of gear diameter difference and is broken by high-efficiency shearing and extrusion, significantly reduce particle size and improve surface area, heat conduction plate heat conduction and stirring structure dynamic overturning are combined, accelerate moisture evaporation, substantially reduce sludge moisture content and transportation cost, high-temperature kill pathogen and parasitic egg simultaneously, cooperate activated carbon tail gas treatment and purify harmful gas, eliminate health and safety hazards, effectively solve the problem of high moisture content, health risk prominent and excessive energy consumption in traditional technology.

Description

Technical Field

[0001] This utility model relates to the technical field of sludge treatment equipment, specifically a sludge treatment device after wastewater dewatering. Background Technology

[0002] Sludge treatment equipment is mainly used to treat sludge generated during wastewater treatment. Its core objectives are to reduce moisture content, stabilize organic matter, and achieve harmlessness and resource recovery. After dewatering, the sludge typically has a moisture content reduced to 60%–80%, forming sludge cakes that are easier to transport and process.

[0003] However, the sludge cake still contains a large amount of water, which not only increases its weight and volume, leading to higher transportation costs and reducing the overall economic benefits of sludge treatment, but also contains a large number of pathogens and parasite eggs, posing a significant public health and safety hazard. Therefore, it is particularly necessary to develop a new type of wastewater dewatering sludge treatment device. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a sludge treatment device after wastewater dewatering, which solves the problems that sludge still contains a large amount of water after dewatering, leading to increased transportation costs, and that sludge also contains a large number of pathogens and parasite eggs, posing significant public health and safety hazards.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sludge treatment device after wastewater dewatering, comprising a base and a box fixedly installed on the top of the base, wherein the inner cavity of the box is provided with a crushing and drying mechanism.

[0006] The pulverizing and drying mechanism includes a first pulverizing roller and a second pulverizing roller rotatably connected to the upper part of the inner cavity of the box. A first pulverizing gear is fixedly installed at one end of the first pulverizing roller, and a second pulverizing gear is fixedly installed at one end of the second pulverizing roller. The diameters of the first pulverizing gear and the second pulverizing gear are different. A stirring structure is rotatably connected to the lower part of the inner cavity of the box. Inclined guide plates are provided on both sides of the stirring structure. The inclined guide plates are fixedly connected to the box body. A stirring gear is fixedly installed at one end of the stirring structure.

[0007] The inner wall of the box is symmetrically provided with heat source mounting slots, and several resistance heating wires are fixedly installed on the inner wall of the heat source mounting slots. A heat conduction plate is fixedly installed on the side of the heat source mounting slot away from the box.

[0008] Preferably, the housing is made of aluminum silicate fiber; the heat conduction plate is made of thin copper plate.

[0009] Preferably, the first crushing roller and the second crushing roller have completely identical structures, wherein both the first crushing roller and the second crushing roller are composed of a crushing shaft and several crushing rods, and the several crushing rods are fixedly installed on the outer circular surface of the crushing shaft.

[0010] Preferably, the stirring structure includes a stirring rod, a plurality of collars are fixedly installed on the outer circular surface of the stirring rod, and a plurality of stirring blocks are fixedly installed on the outer circular surface of the collars.

[0011] Preferably, a power motor is fixedly installed on the outside of the housing, and a main gear is fixedly installed on the output end of the power motor. The main gear meshes with a first crushing gear, a second crushing gear, and a stirring gear.

[0012] Preferably, a baffle plate adapted to the inner cavity of the box is slidably connected to the bottom of the box, and a feeding hopper is fixedly installed at the center of the top of the box.

[0013] Preferably, the housing is provided with an exhaust gas treatment mechanism, which includes an exhaust pipe fixedly installed on the housing and communicating with the inner cavity of the housing. An exhaust gas treatment box is fixedly installed at the outlet end of the exhaust pipe. An activated carbon plate is inserted into the top of the exhaust gas treatment box. The connection between the activated carbon plate and the exhaust gas treatment box has good sealing performance. An exhaust gas outlet pipe communicating with the inner cavity of the exhaust gas treatment box is fixedly installed on the exhaust gas treatment box.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This invention utilizes a first and second crushing roller with different gear diameters to shear and crush sludge using speed differences, significantly reducing particle size and increasing surface area. Combined with the efficient heat conduction of the heat transfer plate on the inner wall of the chamber and the dynamic tumbling of the stirring structure, the sludge moisture is rapidly evaporated, further reducing the moisture content to an optimal level, significantly reducing sludge volume and transportation costs. Simultaneously, the high-temperature environment during the drying process effectively kills pathogens and parasite eggs, and the activated carbon plate in the exhaust gas treatment mechanism adsorbs and purifies harmful gases and odors, completely eliminating public health and safety hazards. The overall device balances volume reduction, harmlessness, and environmental protection, solving the problems of high moisture content, significant hygiene risks, and excessive energy consumption in traditional technologies. Attached Figure Description

[0016] Figure 1 This is a complete structural schematic diagram of the present invention;

[0017] Figure 2 This utility model Figure 1 Another perspective structural diagram;

[0018] Figure 3 This utility model Figure 1A schematic diagram of the cross-sectional structure;

[0019] Figure 4 This utility model Figure 3 A schematic diagram of the structure from one perspective;

[0020] Figure 5 This is a schematic diagram of the exhaust gas treatment mechanism of this utility model.

[0021] In the diagram: 1. Base; 2. Box body; 3. Crushing and drying mechanism; 301. First crushing roller; 302. Second crushing roller; 303. First crushing gear; 304. Second crushing gear; 305. Stirring structure; 3051. Stirring rod; 3052. Collar; 3053. Stirring block; 306. Inclined guide plate; 307. Stirring gear; 308. Heat source mounting groove; 309. Resistance heating wire; 310. Heat conduction plate; 4. Power motor; 5. Main gear; 6. Baffle plate; 7. Feed hopper; 8. Exhaust gas treatment mechanism; 801. Exhaust pipe; 802. Exhaust gas treatment box; 803. Activated carbon plate; 804. Exhaust gas outlet pipe. Detailed Implementation

[0022] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0023] This utility model provides a technical solution:

[0024] Please see Figures 1-5 A sludge treatment device after wastewater dewatering includes a base 1 and a box 2 fixedly installed on the top of the base 1. The inner cavity of the box 2 is provided with a crushing and drying mechanism 3.

[0025] The pulverizing and drying mechanism 3 includes a first pulverizing roller 301 and a second pulverizing roller 302 rotatably connected to the upper part of the inner cavity of the box body 2. A first pulverizing gear 303 is fixedly installed at one end of the first pulverizing roller 301, and a second pulverizing gear 304 is fixedly installed at one end of the second pulverizing roller 302. The diameters of the first pulverizing gear 303 and the second pulverizing gear 304 are different. A stirring structure 305 is rotatably connected to the lower part of the inner cavity of the box body 2. Inclined guide plates 306 are provided on both sides of the stirring structure 305. The inclined guide plates 306 are fixedly connected to the box body 2. A stirring gear 307 is fixedly installed at one end of the stirring structure 305. A heat source mounting groove 308 is symmetrically opened on the inner wall of the box body 2. A number of resistance heating wires 309 are fixedly installed on the inner wall of the heat source mounting groove 308. A heat conduction plate 310 is fixedly installed on the side of the heat source mounting groove 308 away from the box body 2.

[0026] In the crushing and drying mechanism 3, the first crushing roller 301 and the second crushing roller 302 are driven by gears with different diameters, generating a speed difference to shear, squeeze, and crush the sludge, forming fine particles and increasing the surface area. Combined with the resistance heating wire 309 inside the heat source mounting slot 308, heat is transferred through the heat conduction plate 310, achieving efficient drying and reducing moisture content. The lower and middle stirring structure 305 guides the material to be evenly distributed by the inclined guide plate 306. The stirring structure 305 pushes the sludge particles into a circulating fluidized bed state, ensuring uniform heating and accelerating moisture evaporation. The entire system, through the synergistic effect of crushing, drying, and stirring, significantly reduces the sludge moisture content to below 30% and reduces its volume by 60%. Simultaneously, high-temperature inactivation of pathogens and the exhaust gas treatment box purifies the hot and humid gas through activated carbon adsorption, eliminating hygiene and safety hazards and achieving sludge reduction, stabilization, and harmless treatment.

[0027] Furthermore, the box body 2 is made of aluminum silicate fiber; the heat conduction plate 310 is made of thin copper plate. The box body 2 made of aluminum silicate fiber has excellent heat insulation properties, which can prevent heat leakage and keep the internal temperature of the box body 2 constant. The heat conduction plate 310 made of thin copper plate has excellent heat conduction performance, which can transfer heat well and facilitate the subsequent drying operation of the mud cake.

[0028] Furthermore, the first crushing roller 301 and the second crushing roller 302 have completely identical structures. Both the first crushing roller 301 and the second crushing roller 302 are composed of a crushing shaft and several crushing rods. The crushing rods are fixedly installed on the outer circular surface of the crushing shaft. The mud cake is crushed by the crushing rods on the first crushing roller 301 and the second crushing roller 302.

[0029] Furthermore, the stirring structure 305 includes a stirring rod 3051, a plurality of collars 3052 are fixedly installed on the outer circular surface of the stirring rod 3051, and a plurality of stirring blocks 3053 are fixedly installed on the outer circular surface of the collars 3052. The stirring blocks 3053 can turn over the crushed mud cake, so that the moisture in the mud cake is dried more thoroughly.

[0030] Furthermore, a power motor 4 is fixedly installed on the outside of the housing 2, and a main gear 5 is fixedly installed at the output end of the power motor 4. The main gear 5 meshes with the first crushing gear 303, the second crushing gear 304 and the stirring gear 307. The power motor 4 provides kinetic energy to drive the main gear 5 to rotate, thereby causing the main gear 5 to drive the first crushing gear 303, the second crushing gear 304 and the stirring gear 307 to rotate.

[0031] Furthermore, a baffle plate 6 adapted to the inner cavity of the box 2 is slidably connected to the bottom of the box 2, and a feed bin 7 is fixedly installed at the center of the top of the box 2. The discharge of mud cake inside the box 2 can be controlled by the baffle plate 6; the feed bin 7 is convenient for adding mud cake that needs further dehydration.

[0032] Furthermore, a tail gas treatment mechanism 8 is installed on the housing 2. The tail gas treatment mechanism 8 includes an exhaust pipe 801 fixedly installed on the housing 2 and communicating with the inner cavity of the housing 2. A tail gas treatment box 802 is fixedly installed at the outlet end of the exhaust pipe 801. An activated carbon plate 803 is inserted into the top of the tail gas treatment box 802. The connection between the activated carbon plate 803 and the tail gas treatment box 802 has good sealing performance. A tail gas outlet pipe 804 communicating with the inner cavity of the tail gas treatment box 802 is fixedly installed on the tail gas treatment box 802. The tail gas treatment mechanism 8 introduces the humid and hot gas generated during drying into the tail gas treatment box 802 through the exhaust pipe 801. The activated carbon plate 803 inside the box uses strong adsorption to filter VOCs and odor molecules in the gas. The purified gas is discharged through the tail gas outlet pipe 804. This design not only meets environmental emission standards, but also further reduces the health and safety hazards in the sludge treatment process through adsorption, providing a key guarantee for the overall device to achieve the goals of volume reduction, stabilization, and harmless treatment.

[0033] In practical use, the working principle of this utility model is as follows:

[0034] When using this sludge treatment device, the power motor 4 is started to drive the main gear 5 to rotate. The main gear 5 synchronously drives the first crushing gear 303, the second crushing gear 304, and the stirring gear 307 to operate. At the same time, the resistance heating wire 309 starts to work. After the dewatered sludge cake is fed into the housing 2 from the feed hopper 7, the first crushing roller 301 and the second crushing roller 302 form a speed difference due to the difference in gear diameter. This design allows the sludge to undergo both high-speed shearing and low-speed compression during the crushing process, significantly reducing the particle size and creating ideal conditions for subsequent rapid heat exchange.

[0035] The crushed sludge particles fall naturally to the lower middle area under gravity, and the inclined guide plate 306 guides the material to spread evenly around the mixing structure 305. Multiple sets of mixing blocks 3053 on the mixing rod 3051 generate axial thrust during rotation, causing the sludge particles to form a circulating fluidized bed. This dynamic mixing mechanism ensures that each particle is evenly exposed to the heat radiated by the heat conduction plate 310, accelerating the evaporation of moisture from the particle surface, and also enabling the high-temperature sterilization of pathogens and parasite eggs within the sludge cake.

[0036] The hot, humid gas generated during the drying process enters the exhaust gas treatment box 802 through the exhaust pipe 801. The built-in activated carbon plate 803 adsorbs and filters harmful gases and odors, effectively preventing pathogens from spreading through the air. Finally, the dried sludge blocks can be discharged by pulling out the bottom baffle plate 6.

[0037] This device achieves the goals of sludge reduction, stabilization, and harmlessness through the energy coupling of mechanical crushing and thermal drying. The exhaust gas purification design further eliminates the risk of secondary pollution, significantly optimizing the economic and environmental benefits of sludge treatment.

[0038] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A sludge treatment device after wastewater dewatering, characterized in that, It includes a base (1) and a box (2) fixedly installed on the top of the base (1), and the inner cavity of the box (2) is provided with a crushing and drying mechanism (3); The pulverizing and drying mechanism (3) includes a first pulverizing roller (301) and a second pulverizing roller (302) rotatably connected to the upper part of the inner cavity of the box (2). A first pulverizing gear (303) is fixedly installed at one end of the first pulverizing roller (301), and a second pulverizing gear (304) is fixedly installed at one end of the second pulverizing roller (302). The diameters of the first pulverizing gear (303) and the second pulverizing gear (304) are different. A stirring structure (305) is rotatably connected to the lower part of the inner cavity of the box (2). Inclined guide plates (306) are provided on both sides of the stirring structure (305). The inclined guide plates (306) are fixedly connected to the box (2). A stirring gear (307) is fixedly installed at one end of the stirring structure (305). The inner wall of the box (2) is symmetrically provided with heat source mounting slots (308), and a number of resistance heating wires (309) are fixedly installed on the inner wall of the heat source mounting slots (308). A heat conduction plate (310) is fixedly installed on the side of the heat source mounting slots (308) away from the box (2).

2. The sludge treatment device after wastewater dewatering according to claim 1, characterized in that: The housing (2) is made of aluminum silicate fiber; the heat conduction plate (310) is made of thin copper plate.

3. The sludge treatment device after wastewater dewatering according to claim 1, characterized in that: The first crushing roller (301) and the second crushing roller (302) have completely identical structures. Both the first crushing roller (301) and the second crushing roller (302) are composed of a crushing shaft and several crushing rods, and the several crushing rods are fixedly installed on the outer circular surface of the crushing shaft.

4. The sludge treatment device after wastewater dewatering according to claim 1, characterized in that: The stirring structure (305) includes a stirring rod (3051), a plurality of collars (3052) are fixedly installed on the outer circular surface of the stirring rod (3051), and a plurality of stirring blocks (3053) are fixedly installed on the outer circular surface of the collars (3052).

5. The sludge treatment device after wastewater dewatering according to claim 1, characterized in that: A power motor (4) is fixedly installed on the outside of the housing (2). A main gear (5) is fixedly installed at the output end of the power motor (4). The main gear (5) meshes with the first crushing gear (303), the second crushing gear (304), and the stirring gear (307).

6. The sludge treatment device after wastewater dewatering according to claim 1, characterized in that: The bottom of the box (2) is slidably connected to a baffle plate (6) that is adapted to the inner cavity of the box (2), and a feed hopper (7) is fixedly installed at the center of the top of the box (2).

7. The sludge treatment device after wastewater dewatering according to claim 1, characterized in that: The box (2) is provided with an exhaust gas treatment mechanism (8). The exhaust gas treatment mechanism (8) includes an exhaust pipe (801) that is fixedly installed on the box (2) and communicates with the inner cavity of the box (2). An exhaust gas treatment box (802) is fixedly installed at the outlet end of the exhaust pipe (801). An activated carbon plate (803) is inserted into the top of the exhaust gas treatment box (802). The connection between the activated carbon plate (803) and the exhaust gas treatment box (802) has good sealing performance. An exhaust gas outlet pipe (804) that communicates with the inner cavity of the exhaust gas treatment box (802) is fixedly installed on the exhaust gas treatment box (802).

Images