A sludge treatment and recycling production device

Abstract

The utility model provides a kind of sludge treatment recycling production device, belong to sludge treatment equipment technical field, including dehydrator, pulverizer and granulator, be provided with granulating disc on granulator, first screen and second screen are provided inside granulating disc, first gear, first motor are provided below first screen, second gear, second motor are provided below second screen, rotating motor is provided below granulating disc, first screen is connected with first motor by first gear, second screen is connected with second motor by second gear, rotating motor output shaft is fixedly connected with granulating disc.The utility model uses above-mentioned a kind of sludge treatment recycling production device, solved the existing device product uniformity, high risk of hole blockage, granulating efficiency is low, it is difficult to meet the problem of high-precision resource utilization and large-scale industrial production demand.

Description

Technical Field

[0001] This utility model relates to the field of sludge treatment equipment technology, and in particular to a production device for sludge treatment and reuse. Background Technology

[0002] With increasingly stringent environmental standards and a surge in demand for resource recycling, the transformation of sludge treatment towards high-precision resource recovery has become an inevitable trend. However, traditional granulation equipment suffers from two major technological bottlenecks that severely restrict its industrial application value.

[0003] At the grading control level, existing technologies generally employ a single-screen design with a fixed aperture, which cannot achieve precise grading of particles with multiple sizes. Typical drawbacks include: a single screen aperture diameter (e.g., a conventional 8mm aperture), which not only fails to meet the requirement of simultaneous grading of fine and coarse particles, but also results in a wide particle size distribution with uniformity fluctuations exceeding ±15%, far below the particle size consistency requirements for fertilizer pellets (NYP standard) and fuel pellets (RDF standard). Furthermore, single-screen clogging can easily reduce the effective filtration area by more than 30%, requiring frequent shutdowns for cleaning and impacting continuous production efficiency.

[0004] At the motion mode level, traditional devices mostly use a single drive method of disc rotation or screen vibration, which has systemic efficiency defects: unidirectional disc rotation easily leads to sludge accumulation at the edge of the screen, reducing the contact efficiency in the central area; simple vibration easily causes particles to remain on the screen surface, requiring the addition of scraper devices, increasing equipment complexity and energy consumption; a single motion mode also increases the probability of clogging, resulting in poor production stability and making it difficult to meet the industrial demand of daily processing capacity of more than 50 tons.

[0005] The aforementioned deficiencies severely restrict the resource utilization value of existing sludge granulation equipment in terms of product quality, production efficiency, and energy consumption control. There is an urgent need to achieve precise grading and improve contact efficiency and anti-clogging performance, thereby breaking through the technical bottleneck and promoting the development of sludge treatment towards high efficiency, energy saving, and high value. Utility Model Content

[0006] The purpose of this invention is to provide a production device for sludge treatment and reuse, which solves the problems of poor product uniformity, high risk of clogging, and low granulation efficiency of existing devices, making it difficult to meet the needs of high-precision resource utilization and large-scale industrial production.

[0007] To achieve the above objectives, this utility model provides a production device for sludge treatment and reuse, including a dewatering machine, a crusher, and a granulator. The granulator is equipped with a granulation disc, and a first screen and a second screen are arranged inside the granulation disc. A first gear and a first motor are arranged below the first screen, and a second gear and a second motor are arranged below the second screen. A rotating motor is arranged below the granulation disc. The first screen is connected to the first motor through the first gear, and the second screen is connected to the second motor through the second gear. The output shaft of the rotating motor is fixedly connected to the granulation disc.

[0008] Preferably, the rotating motor is provided with motor brackets at both ends, the rotating motor is fixedly connected to the motor brackets, and a rotating bracket is provided below the motor brackets, the rotating bracket being connected to the motor brackets via a coupling.

[0009] Preferably, both the first screen and the second screen are made of stainless steel, and both the first screen and the second screen are annular screens. The first screen has a first screen hole, and the second screen has a second screen hole.

[0010] Preferably, the diameter of the first sieve hole is 5-6 mm, and the diameter of the second sieve hole is 6-10 mm.

[0011] Preferably, the dewatering machine includes a centrifuge drum and a dewatering machine housing. The centrifuge drum is fixedly installed inside the dewatering machine housing. A water outlet is opened at the bottom of the dewatering machine housing, and a material outlet is opened at the bottom of the dewatering machine housing. A conveyor belt is installed below the material outlet, and drive motors are installed at both ends of the conveyor belt. A crusher is installed at the end of the conveyor belt.

[0012] Therefore, the technical effects of the above-mentioned sludge treatment and reuse production device are as follows: 1. Dual-screen independent drive system: The granulation disc is equipped with a first and second screen, each driven by an independent motor and gear, to achieve precise control of screen speed and vibration frequency. This allows for the grading and screening of particles of different sizes (5-6mm and 6-10mm), avoiding the particle mixing problem caused by traditional single screens and improving granulation uniformity and product consistency.

[0013] 2. Three-axis linkage mechanism: The granulation disc is driven to rotate by a rotary motor, and the screen is driven by its own motor, forming a composite motion mode of "disc rotation + screen vibration". This can enhance the contact efficiency between sludge and screen, reduce the risk of clogging, and at the same time promote particle detachment through screen vibration, thereby improving granulation efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a sludge treatment and reuse production device according to the present invention. Figure 2 This is a schematic diagram of the structure of the disc granulator of this utility model; Figure 3 This is a schematic diagram of the screen structure of the disc granulator of this utility model; Figure 4 This is a schematic diagram of the bottom drive mechanism of the disc granulator of this utility model.

[0015] Figure Labels 1. Dewatering machine; 2. Crusher; 3. Granulator; 11. Centrifuge drum; 12. Dewatering machine casing; 13. Water outlet; 14. Conveyor belt; 15. Drive motor; 31. Granulating disc; 32. Rotating motor; 33. Motor bracket; 34. Rotating bracket; 35. Coupling; 311. First screen; 312. Second screen; 313. First motor; 314. First gear. Detailed Implementation

[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0017] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0018] Example 1 like Figures 1-4 As shown, this utility model provides a production device for sludge treatment and reuse, including a dewatering machine 1, a crusher 2 and a granulator 3, which realizes the improvement of sludge treatment efficiency and the optimization of product quality.

[0019] The overall working process of this production unit is as follows: The centrifuge cylinder 11 inside the dewatering machine 1 achieves solid-liquid separation through high-speed rotation. Wastewater is discharged from the bottom outlet 13, and the material is discharged by gravity onto the conveyor belt 14. The drive motor 15 controls the conveyor belt 14 to quantitatively transport the dewatered sludge to the crusher 2. The crusher 2 adopts a double-roller counter-rotating structure to crush the sludge to a particle size ≤3mm, ensuring the uniformity of the granulation raw material.

[0020] The granulator 3 is equipped with a granulation disc 31. Inside the granulation disc 31, there is a first screen 311 and a second screen 312. Below the first screen 311, there is a first gear 314 and a first motor 313. Below the second screen 312, there is a second gear and a second motor. Below the granulation disc 31, there is a rotating motor 32. The first screen 311 is connected to the first motor 313 through the first gear 314, and the second screen 312 is connected to the second motor through the second gear. The output shaft of the rotating motor 32 is fixedly connected to the granulation disc 31.

[0021] The granulation disc 31 is directly fixedly connected to the output shaft of the rotating motor 32, and the motor bracket 33 supports both ends to form a stable base. The disc has a layered double-screen system: the first screen 311 (5-6mm aperture) is driven by the first motor 313 via the first gear 314 to achieve high-frequency vibration, while the second screen 312 (6-10mm aperture) is driven by an independent second motor via the second gear to achieve low-frequency vibration. The two screens are arranged in a concentric ring, with the vibration frequency difference controlled at 15-20Hz, forming a composite motion mode of "high-frequency refining on the inner screen and low-frequency shaping on the outer screen."

[0022] The rotating bracket 34 is flexibly connected to the motor bracket 33 via a coupling 35, allowing for ±5° angular misalignment to absorb vibration and impact. The coupling 35 uses a plum blossom-shaped elastic colloid to ensure smooth power transmission. The motor bracket 33 adopts a gantry-type structure, with its bottom fixed to the equipment base by anchor bolts and its top bolted to the flange of the rotating motor 32, forming a three-point support structure that enhances torsional strength. The screen and gear set use toothed belt drive, with a transmission ratio precisely controlled at 2:1 to ensure that the screen vibration frequency is synchronized with the disc rotation speed.

[0023] In a multi-stage dynamic screening design, it may seem counterintuitive to allow coarsened ceramsite to pass through a smaller diameter screen, but this goal can be achieved by combining a dynamic screening mechanism with particle size classification control.

[0024] Traditional screening is static; particles must be smaller than the sieve openings to pass through. Dynamic screening, however, utilizes the rotation, vibration, or tilting of the sieve, combined with the rolling motion of particles within the disc, to achieve a cyclical process of "gradual retention → localized thickening → dynamic release." After entering the disc, the material rolls towards the disc wall under centrifugal force, first contacting the first sieve 311. Particles with a diameter <5-6mm pass directly through the sieve and enter the next stage. Particles with a diameter ≥6mm are retained by the first sieve 311 and continue to roll and thicken inside it. When the particles thicken to near the aperture of the next sieve, the sieve rotates in the opposite direction to the disc (or at a different speed), generating shear force that continuously changes the contact surface between the particles and the sieve, reducing the risk of jamming. The sieve vibrates at low frequency driven by a motor, causing the particles to bounce slightly at the sieve openings, increasing the probability of passage. When a 10mm particle rolls to the 10mm sieve, the rotation, tilting, and vibration of the sieve work together to allow the particle to pass through the sieve openings in a "sliding-bouncing" manner.

[0025] The basic working process of the above-mentioned device is as follows: After the sludge undergoes high-speed solid-liquid separation in the centrifuge cylinder 11 inside the dewatering machine 1, the wastewater is discharged from the outlet 13 at the bottom of the dewatering machine shell 12, while the sludge falls into the conveyor belt 14 through the discharge port. The conveyor belt 14 is then transported to the crusher 2 and crushed to a particle size of ≤3mm by the drive motor 15. Subsequently, it enters the granulation disc 31 of the granulator 3. The rotating motor 32 drives the disc to rotate. The first screen 311 (5-6mm sieve hole) is subjected to high-frequency vibration by the first motor 313 + first gear 314 to intercept particles ≥5mm and promote the passage of fine particles. The second screen 312 (6-10mm sieve hole) is subjected to low-frequency vibration by the second motor + second gear to coarse the particles. The motor bracket 33 fixes the rotating motor 32, and the rotating bracket 34 is connected to the motor bracket 33 via the coupling 35 to form a stable support. Finally, through the dynamic screening mechanism, the coarsened particles pass through the sieve holes after reverse rotation and tilting vibration, completing the entire process of resource utilization of sludge from dewatering to crushing to multi-stage dynamic screening.

[0026] Therefore, this utility model adopts the above-mentioned sludge treatment and reuse production device, which achieves multi-stage dynamic screening through centrifugal solid-liquid separation of dewatering machine, conveyor belt conveying crushing to pulverizer, granulator dual screen independent drive and three-axis linkage, combined with reverse rotation vibration release mechanism, to efficiently complete the whole process of sludge dewatering-pulverizing-granulation resource utilization.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A production apparatus for sludge treatment and reuse, characterized in that, The system includes a dewatering machine, a crusher, and a granulator. The granulator is equipped with a granulation disc, inside which are a first screen and a second screen. Below the first screen are a first gear and a first motor, and below the second screen are a second gear and a second motor. Below the granulation disc is a rotating motor. The first screen is connected to the first motor via the first gear, and the second screen is connected to the second motor via the second gear. The output shaft of the rotating motor is fixedly connected to the granulation disc.

2. The sludge treatment and reuse production apparatus according to claim 1, characterized in that, The rotating motor has motor brackets at both ends, and the rotating motor is fixedly connected to the motor brackets. A rotating bracket is set below the motor brackets, and the rotating bracket is connected to the motor brackets through a coupling.

3. The sludge treatment and reuse production apparatus according to claim 1, characterized in that, Both the first and second screens are made of stainless steel and are annular screens. The first screen has a first screen hole and the second screen has a second screen hole.

4. The sludge treatment and reuse production apparatus according to claim 3, characterized in that, The diameter of the first sieve hole is 5-6mm, and the diameter of the second sieve hole is 6-10mm.

5. A sludge treatment and reuse production apparatus according to claim 1, characterized in that, The dewatering machine includes a centrifuge drum and a dewatering machine housing. The centrifuge drum is fixedly installed inside the dewatering machine housing. A water outlet and a material outlet are opened at the bottom of the dewatering machine housing. A conveyor belt is installed below the material outlet. Drive motors are installed at both ends of the conveyor belt, and a crusher is installed at the end of the conveyor belt.

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