sludge treatment equipment

Abstract

This utility model discloses a sludge treatment device, including: a filter press; a locking ring is fixedly installed at one end of the filter press's thrust plate; a concentration tank is fixedly installed inside the locking ring; a sludge separation mechanism is connected to the lower surface of the concentration tank; the discharge end of the sludge separation mechanism is connected to the feed inlet of the filter press; and a compression mechanism is fixedly installed at the lower end of the filter press. The compression mechanism can receive the sludge cake produced after filtration and compress it into blocks. This application, through the design of the concentration tank and the sludge separation mechanism, allows for pre-separation of water in the concentration tank, enabling preliminary concentration of the sludge. This significantly reduces the processing volume and time of the subsequent filter press, improving overall processing efficiency. The secondary compression of the sludge cake significantly reduces the sludge volume, achieving a high degree of sludge reduction and lowering transportation costs and subsequent disposal difficulties.

Description

Technical Field

[0001] This utility model relates to the field of sludge treatment technology, specifically to sludge treatment equipment. Background Technology

[0002] In today's context of increasingly stringent environmental protection requirements, sludge treatment, as a crucial link in the environmental protection field, is of great significance for maintaining ecological stability and promoting resource recycling. With the acceleration of urbanization and the advancement of various engineering projects, a large amount of sludge is generated, and the shortcomings of traditional sludge treatment methods in terms of efficiency, environmental friendliness, and resource utilization are gradually becoming apparent. Existing sludge treatment technologies are either inefficient in the solid-liquid separation stage, making it difficult to meet the needs of large-scale treatment; or they cause secondary pollution to the environment during the treatment process, failing to achieve the goal of green treatment.

[0003] For example, the national authorized patent announcement number CN220317592U discloses a main body of a municipal sludge treatment device. The device has a collection chamber on the upper left side, an output chamber on the lower left side, and a filtration chamber on the right side. A conveying mechanism, including an inlet channel, is located on the upper side of the device. A clearance hole connects the collection chamber and the filtration chamber. A filtration mechanism, including a filter conveyor belt, is installed on both the collection and filtration chambers. An output mechanism, including a discharge channel, is located on the bottom side of the device. This invention, by incorporating the conveying, filtration, and output mechanisms, achieves sludge filtration, discharge, and centralized waste collection functions, thereby improving the efficiency of sludge treatment.

[0004] However, the aforementioned municipal sludge treatment equipment cannot perform mud-water separation before sludge treatment and then perform pressure filtration on the remaining sludge. Without prior mud-water separation, a large amount of water will enter the subsequent filtration stage along with the sludge. This requires the filtration mechanism to handle a larger total amount of material, increases the load on components such as the filter conveyor belt, and forces a reduction in operating speed, resulting in a longer sludge treatment cycle and difficulty in improving treatment efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a sludge treatment device to solve the problem mentioned in the background art that it cannot perform mud-water separation before sludge treatment and then perform pressure filtration on the remaining sludge after separation. Without prior mud-water separation, a large amount of water will enter the subsequent filtration stage along with the sludge, which will require the filtration mechanism to handle a larger total amount of material and increase the load on components such as the filter conveyor belt.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] The sludge treatment equipment includes: a filter press, wherein both ends of the filter plates slidably installed inside the filter press are connected to water taps, the water taps are perpendicular to the U-shaped water collection tank, the U-shaped water collection tank is fixedly installed at both ends of the filter press, and a first ball valve is connected to one end of the lower surface of the U-shaped water collection tank;

[0008] A locking ring is fixedly installed at one end of the thrust plate of the filter press, and a concentration tank is fixedly installed inside the locking ring. The concentration tank is used to pump slurry and flocculant into the tank for mixing. The flocculant is used to promote the flocculation of solid particles in the slurry into agglomerates. As the particles increase in mass after agglomeration, they settle downwards under their own gravity, forming concentrated slurry with a high solids content at the bottom of the concentration tank. The clean water, because its density is lower than that of the slurry, flows upwards and eventually overflows into the clean water pipe at the top of the concentration tank. The clean water pipe is installed overhead at the center of the inside of the concentration tank, and its installation height is lower than the top height of the concentration tank.

[0009] The lower surface of the concentration tank is connected to a sludge separation mechanism. The sludge discharge end of the sludge separation mechanism is connected to the feed inlet of the filter press, so that the concentrated sludge after settling is filled into the sludge separation mechanism and injected into the filter press for filtration.

[0010] A compression mechanism is fixedly installed at the lower end of the filter press. The compression mechanism can receive the mud cake produced after the filter press and compress the mud cake into blocks.

[0011] Preferably, a suction pipe is installed inside the clean water pipe. One end of the suction pipe extends from the concentration tank and is connected to a second ball valve. The second ball valve can be connected to an external water pump to draw clean water from the clean water pipe.

[0012] Preferably, one end of the suction pipe extending into the water pipe is connected to and installed with a filter pipe.

[0013] Preferably, the sludge separation mechanism includes a connecting box, which is fixedly installed on the lower surface of the concentration tank. A ring pipe is fixedly installed inside the connecting box and is connected to the lower surface of the concentration tank. A rotating rod is rotatably installed inside the ring pipe. Six sets of separating blades are fixedly installed at equal intervals on the outer surface of the rotating rod. The rotating rod is fixedly connected to the output shaft of a first motor, which is fixedly installed at one end of the connecting box. This allows the rotating rod to drive three sets of separating blades to form a W shape at the upper end through the first motor, thereby receiving the sludge and sealing the ring pipe.

[0014] Preferably, a U-shaped pipe is connected to the lower surface of the ring pipe so that the U-shaped pipe can receive the dumped sludge. One end of the U-shaped pipe extends out from the connecting box. A first spiral conveying blade is rotatably installed inside the U-shaped pipe. The first spiral conveying blade is fixedly connected to the output shaft of a second motor. The second motor is fixedly installed at one end of the extended U-shaped pipe.

[0015] Preferably, a first pipe is installed at the lower end of the outer surface of the U-shaped tube extending from the connecting box, and the other end of the first pipe is installed at the feed inlet of the peristaltic pump. The peristaltic pump is fixedly installed at one end of the support leg of the filter press, and a second pipe is installed at one end of the discharge outlet of the peristaltic pump. The other end of the second pipe is connected to the feed inlet of the filter press.

[0016] Preferably, the compression mechanism includes a funnel cylinder, which is fixedly installed at the lower end of the filter press. A second spiral conveying blade is rotatably installed at the inner bottom of the funnel cylinder. One end of the second spiral conveying blade is fixedly connected to the output shaft of a third motor, which is fixedly installed at one end of the funnel cylinder.

[0017] The funnel cylinder has a compression port on its lower surface, and a slanted slide plate is provided at the upper end of the compression port. The slanted slide plate is fixedly installed inside one end of the funnel cylinder, so that the second spiral conveyor blade can transport the received mud cake into the compression port.

[0018] Preferably, a first connecting cylinder is connected to one end of the compression port, a first hydraulic rod is fixedly installed inside the first connecting cylinder, a first sealing plate is fixedly installed at one end of the piston rod of the first hydraulic rod, and the first sealing plate slides inside the first connecting cylinder, so that the first sealing plate can block the connection between the compression port and the compression port.

[0019] Preferably, the other end of the compression port is connected to a second connecting cylinder, a second hydraulic rod is fixedly installed inside the second connecting cylinder, a second sealing plate is fixedly installed at one end of the piston rod of the second hydraulic rod, the second sealing plate is L-shaped and slides between the second connecting cylinder and the compression port.

[0020] Preferably, when the second sealing plate is pushed into the compression port by the second hydraulic rod, the horizontal surface of the L-shaped second sealing plate can be pulled out from the second connecting cylinder and act as a barrier at the upper end of the compression port to prevent mud from falling into the second connecting cylinder.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] I. Multi-level processing system to improve overall processing efficiency

[0023] Pre-concentration and reduction

[0024] By working together with the thickener and flocculant, the initial solid-liquid separation of the slurry is achieved: solid particles flocculate and settle to form concentrated slurry with high solid content, while clear water overflows upwards to separate, which greatly reduces the processing load and processing time of the subsequent filter press and improves the overall processing efficiency of the system.

[0025] The design of the clear water pipe, along with the suction pipe and filter pipe, enables secondary filtration of overflow water, ensuring clean effluent that can be directly reused or discharged in compliance with standards, thus reducing water waste and subsequent water treatment costs.

[0026] Filter press-compression linkage for enhanced efficiency

[0027] The filter plates of the filter press work together with the U-shaped water collection tank to quickly remove water and retain solid particles to form a mud cake. After the mud cake is discharged from the bottom of the filter press, it falls into the compression mechanism for further compression into blocks, which significantly reduces the volume of sludge and facilitates subsequent storage, transportation and disposal.

[0028] II. Continuous design throughout the entire process to ensure stable operation

[0029] High-efficiency conveying of sludge separation mechanism

[0030] The partition blades inside the ring pipe are driven to rotate by a motor. Through a specific shape (such as W-shape), they enable the continuous receiving, dumping, and sealed transport of sludge from the bottom of the concentration tank, preventing sludge leakage and ensuring process continuity.

[0031] The U-shaped tube with internal spiral conveying blades and peristaltic pump design effectively prevents sludge accumulation and blockage, while providing stable conveying pressure to ensure uniform and continuous feeding of the filter press, adapting to different processing needs.

[0032] Intelligent collaborative operation of compression mechanism

[0033] The funnel-shaped cylinder receives the sludge cake after filtration and guides it to the compression port through a spiral conveyor blade, with an inclined slide plate assisting in the flow. The bidirectional hydraulic rod drives the sealing plate to form a closed space, achieving efficient compression of the sludge cake into blocks. The compression process is stable and safe, avoiding splashing and overflow.

[0034] III. Optimization of Equipment Reliability and Environmental Benefits

[0035] Low maintenance and high reliability

[0036] Key components (such as separator blades and spiral conveyor blades) are made of wear-resistant materials and have a structural design to reduce equipment wear and failure frequency, reduce maintenance costs, and ensure long-term stable operation.

[0037] The selection and sealing design of components such as peristaltic pumps prevent backflow and leakage during sludge transportation, thereby improving system reliability.

[0038] Environmental friendliness and resource utilization

[0039] The fully enclosed design reduces the spread of pollutants, the clean water separated by concentration and filtration can be reused, and the volume of the sludge cake is greatly reduced after compression, which reduces the risk of pollution and the difficulty of disposal during transportation.

[0040] The compressed mud cake has a stable shape and can be further used in landfill, brick making and other resource utilization scenarios to achieve the reduction, harmlessness and resource utilization of sludge, and improve environmental benefits and economic value. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the overall structure of the sludge treatment equipment of this utility model;

[0042] Figure 2 This is a top view schematic diagram of the overall structure of the sludge treatment equipment of this utility model;

[0043] Figure 3 This is a schematic diagram of the concentration tank and the clear water pipe of this utility model;

[0044] Figure 4 This is a schematic diagram of the peristaltic pump of this utility model, which is connected to a U-shaped pipe through a first pipe.

[0045] Figure 5 This is a schematic diagram of the structure of the annular tube and the separator leaf of this utility model;

[0046] Figure 6 This is a schematic diagram of the structure of the funnel and compression port of this utility model;

[0047] Figure 7 This is a schematic diagram of the structure of the first and second hydraulic rods of this utility model.

[0048] In the diagram: 1. Filter press; 101. Locking ring; 102. Concentrator; 103. Clean water pipe; 104. Suction pipe; 105. Filter plate; 106. Faucet; 107. U-shaped water collection tank; 108. First ball valve; 109. Second ball valve; 110. Filter tube; 2. Sludge separation mechanism; 201. Connecting box; 202. U-shaped pipe; 203. First motor; 204. Second motor; 205. First pipeline; 206. Peristaltic pump; 20 7. Second pipe; 208. First spiral conveyor blade; 209. Rotating rod; 210. Ring pipe; 211. Separating blade; 3. Compression mechanism; 301. Funnel cylinder; 302. Second spiral conveyor blade; 303. Inclined slide plate; 304. Third motor; 305. Compression port; 306. First connecting cylinder; 307. First hydraulic rod; 308. First sealing plate; 309. Second connecting cylinder; 310. Second hydraulic rod; 311. Second sealing plate. Detailed Implementation

[0049] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0050] like Figures 1-2 As shown, the sludge treatment equipment includes: a filter press 1, in which filter plates 105 are slidably installed and both ends are connected to water taps 106. The water taps 106 are perpendicular to the U-shaped water collection tank 107. The U-shaped water collection tank 107 is fixedly installed at both ends of the filter press 1, and a first ball valve 108 is connected to one end of the lower surface of the U-shaped water collection tank 107.

[0051] The filter press 1 has a locking ring 101 fixedly installed at one end of its thrust plate, and a concentration tank 102 is fixedly installed inside the locking ring 101. The concentration tank 102 is used to pump slurry and flocculant into the tank for mixing. The flocculant is used to promote the flocculation of solid particles in the slurry into agglomerates. As the particles increase in mass after agglomeration, they settle downwards under their own gravity, forming a concentrated slurry with a high solids content at the bottom of the concentration tank 102. The clean water, because its density is lower than that of the slurry, flows upwards and eventually overflows at the top of the concentration tank 102 into the clean water pipe 103. The clean water pipe 103 is installed overhead. The filter press 1 is installed at the center of the thickening tank 102, with its installation height lower than the top of the thickening tank 102. A sludge separation mechanism 2 is connected to the lower surface of the thickening tank 102. The sludge discharge end of the sludge separation mechanism 2 is connected to the feed inlet of the filter press 1, so that the settled thickened sludge fills the sludge separation mechanism 2 and is injected into the filter press 1 for filtration. A compression mechanism 3 is fixedly installed at the lower end of the filter press 1. The compression mechanism 3 can receive the sludge cake produced after filtration by the filter press 1 and compress the sludge cake into blocks. A suction pipe 104 extends from the clear water pipe 103. One end of the suction pipe 104 extends from the thickening tank 102 and is connected to a second ball valve 109. The second ball valve 109 can be connected to an external water pump to draw clear water from the clear water pipe 103. A filter pipe 110 is connected to one end of the suction pipe 104 extending into the clear water pipe 103.

[0052] Through the design of the filter press 1, thickening tank 102, clear water pipe 103, suction pipe 104, filter pipe 110, sludge separation mechanism 2, and compression mechanism 3, sludge filtration can be achieved by first injecting sludge containing moisture into the thickening tank 102, and simultaneously adding flocculant to the thickening tank 102. The flocculant causes the solid particles in the sludge to flocculate into clumps. As the particles agglomerate, their mass increases, and they settle downwards under their own gravity, forming a concentrated sludge with a high solids content at the bottom. The clear water, with a lower density than the sludge, flows upwards and eventually overflows into the clear water pipe 103 at the top. The suction pipe 104 then uses a water pump to extract the clear water remaining in the clear water pipe 103. During the extraction process, the water undergoes secondary filtration through the filter pipe 110. After the clear water is extracted, the high-solids-content concentrated sludge formed at the bottom of the thickening tank 102 will accumulate on the... The sludge is conveyed to the filter press 1 through the sludge separation mechanism 2. After entering the filter press 1, the sludge is squeezed in the filter chamber formed between the filter plates 105. The water in the sludge passes through the filter cloth and flows into the U-shaped water collection tank 107 through the faucets 106 at both ends of the filter plates 105, and is then discharged through the first ball valve 108. The solid particles are trapped in the filter chamber and gradually form a sludge cake. After the filtration is completed, the sludge cake is discharged from the bottom of the filter press 1 and falls into the compression mechanism 3 at the bottom. The compression mechanism 3 will compress the sludge cake into blocks again to facilitate subsequent storage, transportation and disposal. The water is separated in advance by the concentration tank 102, which initially concentrates the sludge, greatly reducing the processing capacity and processing time of the filter press 1 and improving the overall processing efficiency. The sludge cake is compressed into blocks, which can significantly reduce the volume of sludge, achieve a high degree of sludge reduction, and reduce transportation costs and subsequent disposal difficulties.

[0053] like Figures 3-5 As shown, the sludge separation mechanism 2 includes a connecting box 201, which is fixedly installed on the lower surface of the concentration tank 102. A ring pipe 210 is fixedly installed inside the connecting box 201 and is connected to the lower surface of the concentration tank 102. A rotating rod 209 is rotatably installed inside the ring pipe 210. Six sets of separating leaves 211 are fixedly installed at equal intervals on the outer surface of the rotating rod 209. The rotating rod 209 is fixedly connected to the output shaft of the first motor 203. The first motor 203 is fixedly installed at one end of the connecting box 201, so that the rotating rod 209 can drive three sets of separating leaves 211 to face upwards to form a W shape to receive the sludge and seal the ring pipe 210 at the same time.

[0054] A U-shaped pipe 202 is connected to the lower surface of the ring pipe 210, allowing the U-shaped pipe 202 to receive dumped sludge. One end of the U-shaped pipe 202 extends out from the connecting box 201. A first spiral conveying blade 208 is rotatably installed inside the U-shaped pipe 202. The first spiral conveying blade 208 is fixedly connected to the output shaft of the second motor 204, which is fixedly installed at one end of the extended U-shaped pipe 202. A first pipe 205 is connected to the lower end of the outer surface of the U-shaped pipe 202 extending from the connecting box 201. The other end of the first pipe 205 is connected to the inlet of the peristaltic pump 206. The peristaltic pump 206 is fixedly installed at one end of the support leg of the filter press 1. A second pipe 207 is connected to the outlet of the peristaltic pump 206, and the other end of the second pipe 207 is connected to the inlet of the filter press 1.

[0055] Through the design of the annular pipe 210, separator blades 211, first spiral conveyor blade 208, U-shaped pipe 202, first motor 203, second motor 204, and peristaltic pump 206, during the separation of sludge in the thickening tank 102, the rotating rod 209 in the connecting box 201 is driven by the first motor 203, which drives the six sets of separator blades 211 to rotate. When three sets of separator blades 211 are driven to form a W shape facing upwards, they can receive the sludge settling at the bottom of the thickening tank 102 and also seal the annular pipe 210 to prevent sludge from being separated. When slurry leaks, the slurry that has been collected is rotated by the partition blade 211, causing the collected sludge to be poured into the U-shaped pipe 202 below for collection. The rotated partition blade 211 can then continue to collect new sludge, thus achieving continuous collection and transport of sludge. After the U-shaped pipe 202 collects sludge, the first spiral conveying blade 208 inside, driven by the second motor 204, begins to rotate, pushing the sludge along the U-shaped pipe 202 into the first pipe 205. The spiral conveying method not only effectively prevents sludge from accumulating and clogging in the U-shaped tube 202, but also allows for precise control of the sludge conveying volume by adjusting the speed of the second motor 204, adapting to the processing needs under different working conditions. Subsequently, the sludge enters the peristaltic pump 206 through the first pipe 205, and the peristaltic pump 206 utilizes its own squeezing characteristics to stably and evenly convey the sludge through the second pipe 207 to the feed inlet of the filter press 1. The design of the peristaltic pump 206 can prevent backflow of sludge during the conveying process, while providing stable pressure to ensure stable feed pressure of the filter press 1, thereby improving the filtration efficiency and effect, and allowing the entire sludge separation process to operate in an orderly manner. It not only achieves efficient and stable conveying of sludge at the bottom of the concentration tank 102, but also reduces the frequency of equipment failure and lowers maintenance costs by means of the sealing design of the separator leaf 211, the anti-clogging conveying of the first spiral conveying leaf 208, and the constant pressure feed control of the peristaltic pump 206, ensuring the continuous operation of the sludge treatment process and significantly improving the overall working efficiency and reliability of the sludge treatment equipment.

[0056] like Figures 6-7 As shown, the compression mechanism 3 includes a funnel cylinder 301, which is fixedly installed at the lower end of the filter press 1. A second spiral conveying blade 302 is rotatably installed at the inner bottom of the funnel cylinder 301. One end of the second spiral conveying blade 302 is fixedly connected to the output shaft of the third motor 304, which is fixedly installed at one end of the funnel cylinder 301.

[0057] The funnel cylinder 301 has a compression port 305 connected to its lower surface. A slanted slide plate 303 is provided at the upper end of the compression port 305. The slanted slide plate 303 is fixedly installed inside one end of the funnel cylinder 301, so that the second spiral conveying blade 302 can convey the mud cake it receives into the compression port 305.

[0058] One end of the compression port 305 is connected to a first connecting cylinder 306, and a first hydraulic rod 307 is fixedly installed inside the first connecting cylinder 306. A first sealing plate 308 is fixedly installed at one end of the piston rod of the first hydraulic rod 307. The first sealing plate 308 slides inside the first connecting cylinder 306, thereby sealing the connection between the first sealing plate 308 and the compression port 305. The other end of the compression port 305 is connected to a second connecting cylinder 309, and a second hydraulic rod 310 is fixedly installed inside the second connecting cylinder 309. A second sealing plate 311 is fixedly installed at one end of the piston rod of the second hydraulic rod 310. The second sealing plate 311 is L-shaped and slides between the second connecting cylinder 309 and the compression port 305. When the second sealing plate 311 is pushed into the compression port 305 by the second hydraulic rod 310, the horizontal surface of the L-shaped second sealing plate 311 can be pulled out from the second connecting cylinder 309 and act as a barrier at the upper end of the compression port 305 to prevent mud from falling into the second connecting cylinder 309.

[0059] Through the design of the funnel cylinder 301, the second spiral conveyor blade 302, the inclined slide plate 303, the third motor 304, the compression port 305, the first hydraulic rod 307, and the second hydraulic rod 310, after the sludge is filtered by the filter press 1, the sludge cake can be discharged from the bottom of the filter press 1 and fall into the funnel cylinder 301. The funnel cylinder 301 has a funnel-shaped structure that is wider at the top and narrower at the bottom, which can effectively receive and concentrate the sludge cake, reducing the accumulation and spillage of the sludge cake. The sludge cake falling into the funnel cylinder 301 can be further controlled by the third motor 304. Under the action of the second spiral conveyor blade 302 driven by the 4, the mud cake is conveyed along the cylinder wall towards the compression port 305. When the mud cake is conveyed to the compression port 305, the inclined slide plate 303 plays a role in guiding the flow and preventing overflow, guiding the mud cake to slide smoothly into the compression port 305. After the compression port 305 is filled, the second hydraulic rod 310 in the second connecting cylinder 309 is activated to push the second sealing plate 311, and the second sealing plate 311 can be pushed and pressed into the compression port 305 to compress the filled mud cake into blocks. Furthermore, during the compression of the sludge, the inclined slide plate 303 at the upper end of the compression port 305 can form a planar obstruction during compression, preventing the sludge cake from splashing upwards or overflowing under high pressure, thus ensuring the stability and safety of the compression process. At the same time, the first hydraulic rod 307 inside the first connecting cylinder 306 synchronously pushes the first sealing plate 308 to tightly seal the other end of the compression port 305, forming a closed space of bidirectional compression. This allows the sludge cake to be subjected to uniform and continuous high pressure within the compression port 305, further reducing the moisture content of the sludge cake and compressing its volume. Once the sludge cake is compressed into a compact block, the first hydraulic rod 307 can pull back the first sealing plate 308 to release the obstruction to the sludge block, and activate the second hydraulic rod 310 to push the second sealing plate 311 again to push the sludge block out of the compression port 305. The compressed sludge cake has a higher density and a more stable shape, which not only facilitates reducing spillage pollution during transportation but can also be directly used for resource utilization scenarios such as landfill and brick making, further enhancing the environmental benefits and economic value of sludge treatment.

[0060] This also includes a control system, which dynamically adjusts the flocculant addition rate, filter press pressure, and hydraulic parameters of the compression mechanism. The control system calculates the optimal flocculant addition rate in real time based on the following equation:

[0061]

[0062] in:

[0063] Q f (t): Real-time flocculant addition rate (kg / min);

[0064] C0(t): Real-time initial concentration of mud in the thickener (g / L);

[0065] V(t): Real-time flow rate of mud (m³ / s) 3 / h);

[0066] S(t): Rotational speed (rpm) of the stirring blades inside the concentrator;

[0067] k: Equipment efficiency coefficient (calibrated experimentally, with a value range of 0.8-1.2);

[0068] τ: Mud settling time constant (s, related to mud viscosity);

[0069] α: Stirring resistance factor (dimensionless, related to tank structure).

[0070] This control system achieves optimized control through the following steps:

[0071] a. Real-time data collection of mud concentration C0(t), flow rate V(t), and stirring speed S(t);

[0072] b. Substitute the parameters into the equation to calculate Qf(t), and control the flocculant pump to add it at that rate;

[0073] c. Synchronously adjust the filter press pressure P(t) to Where β is the pressure filtration gain coefficient;

[0074] d. Based on the feedback of the moisture content of the mud cake, adjust the hydraulic rod pressure of the compression mechanism to make it linearly proportional to P(t).

[0075] Example: When the mud concentration C0(t) = 150 g / L and the flow rate V(t) = 2 m³ / L is detected... 3 When the stirring speed is S(t) = 60 rpm, and k = 1.0, τ = 120 s, and α = 0.05, the following calculations are obtained:

[0076]

[0077] Parameter description:

[0078] k comprehensively reflects the equipment's processing capacity and is calibrated under actual operating conditions;

[0079] τ and α were determined by experiments on mud properties and tank structure.

[0080] Technical effects:

[0081] Dynamically match flocculant dosage with slurry condition to reduce agent waste;

[0082] The filter pressure automatically adjusts to the concentration effect, significantly reducing energy consumption;

[0083] The moisture content of the mud cake was further reduced, and the volume reduction was significantly improved.

[0084] Working principle and process:

[0085] 1. Data Acquisition: Sensors monitor mud concentration, flow rate, and stirring speed in real time;

[0086] 2. Equation Calculation: The control system outputs the optimal flocculant addition rate based on the equation;

[0087] 3. Synergistic control: The filter press pressure and compression hydraulic parameters are adjusted synchronously to form a closed-loop optimization;

[0088] 4. Results Feedback: The equation parameters were iteratively optimized based on the moisture content data of the mud cake to improve long-term stability.

[0089] In summary, this equation combines the terms of mud concentration, flow rate, and the square of stirring resistance, and expresses them through a nonlinear denominator term τ+α·S(t). 2 The quantitative analysis of the inhibitory effect of stirring on flocculant efficiency overcomes the limitations of traditional linear models. Experiments show that this model improves flocculant utilization by 25% and has strong adaptability to various operating conditions.

[0090] Based on the above technical solution, the working steps of this solution are summarized as follows: When filtering sludge, sludge containing moisture is first injected into the thickening tank 102, and flocculant is added to the thickening tank 102 during this process. The flocculant causes the solid particles in the sludge to flocculate into clumps. As the particles agglomerate, their mass increases, and they settle downwards under their own gravity, forming a thickened sludge with a high solids content at the bottom. Meanwhile, the water, with a lower density than the sludge, flows upwards and eventually overflows into the clear water pipe 103 at the top. The water is then pumped out of the clear water pipe 103 via the suction pipe 104. During the extraction process, the water undergoes secondary filtration through the filter pipe 110. After the clear water is extracted, the thickened sludge at the bottom of the thickening tank 102... The concentrated sludge settles and accumulates in a W-shape formed by the three sets of separator blades 211 facing upwards. After being collected, the sludge is rotated by the first motor 203, causing the separator blades 211 to be poured into the U-shaped pipe 202 below for collection. After being flipped, the three sets of separator blades 211, originally at the bottom, continue to collect new sludge upwards. Once the U-shaped pipe 202 collects the sludge, the first spiral conveying blade 208 inside, driven by the second motor 204, begins to rotate, pushing the sludge along the U-shaped pipe 202 into the first pipe 205. Subsequently, the sludge enters the peristaltic pump 206 through the first pipe 205. The peristaltic pump 206 then utilizes its compression characteristics to stably and evenly distribute the sludge. The slurry is fed into the inlet of the filter press 1 through the second pipe 207. After entering the filter press 1, the slurry is squeezed in the filter chamber formed between the filter plates 105. The water in the slurry passes through the filter cloth and flows into the U-shaped water collection tank 107 through the faucets 106 at both ends of the filter plates 105, and then is discharged through the first ball valve 108. The solid particles are trapped in the filter chamber and gradually form a slurry cake. After the filtration is completed, the slurry cake is discharged from the bottom of the filter press 1 and falls into the funnel cylinder 301 at the bottom. The slurry cake that falls into the funnel cylinder 301 can be conveyed along the cylinder wall towards the compression port 305 and filled in by the second spiral conveying blade 302 driven by the third motor 304 until the compression port 305 is full. Then the second connecting cylinder 309 can be activated. The second hydraulic rod 310 pushes the second sealing plate 311, which is then pushed and pressed into the compression port 305 to compress the filled mud into blocks. During the compression process, the inclined slide plate 303 at the upper end of the compression port 305 forms a planar obstruction to prevent the mud cake from splashing upwards or overflowing under high pressure, ensuring the stability and safety of the compression process. At the same time, the first hydraulic rod 307 in the first connecting cylinder 306 simultaneously pushes the first sealing plate 308 to tightly seal the other end of the compression port 305, forming a closed space of bidirectional compression. This allows the mud cake to be subjected to uniform and continuous high pressure within the compression port 305, further reducing the moisture content of the mud cake and compressing its volume. Once the mud cake is compressed into a compact block,The first hydraulic rod 307 pulls back the first sealing plate 308 to release the obstruction of the mud, and then activates the second hydraulic rod 310 to push the second sealing plate 311 again, thus pushing the mud out of the compression port 305.

[0091] In summary, this equipment pre-separates water in the concentration tank 102, allowing the sludge to be initially concentrated, which significantly reduces the processing volume and time of the subsequent filter press 1, and improves the overall processing efficiency. The secondary compression of the sludge cake can significantly reduce the volume of the sludge, achieving a high degree of sludge reduction, reducing transportation costs and the difficulty of subsequent disposal.

[0092] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sludge treatment apparatus, characterized by, include: A filter press (1) has a filter plate (105) that is slidably installed inside the filter press (1) with a water tap (106) connected to both ends. The water tap (106) is perpendicular to the U-shaped water collection tank (107). The U-shaped water collection tank (107) is fixedly installed at both ends of the filter press (1), and a first ball valve (108) is connected to one end of the lower surface of the U-shaped water collection tank (107).

2. The sludge treatment apparatus according to claim 1, characterized by: A locking ring (101) is fixedly installed at one end of the thrust plate of the filter press (1), and a concentration tank (102) is fixedly installed inside the locking ring (101). The concentration tank (102) is used to pump mud and flocculant into the tank for mixing. The flocculant is used to promote the flocculation of solid particles in the mud into agglomerates. As the mass of the particles increases after agglomeration, they sink downward under their own gravity, forming a concentrated mud with a high solid content at the bottom of the concentration tank (102). The clean water has a lower density than the mud, flows upward and finally overflows at the top of the concentration tank (102) to the clean water pipe (103). The clean water pipe (103) is installed in the center of the inside of the concentration tank (102), and its installation height is lower than the top height of the concentration tank (102). The lower surface of the concentration tank (102) is connected to a sludge separation mechanism (2). The sludge discharge end of the sludge separation mechanism (2) is connected to the feed inlet of the filter press (1) so that the concentrated sludge after settling is filled into the sludge separation mechanism (2) and injected into the filter press (1) for filter pressing. A compression mechanism (3) is fixedly installed at the lower end of the filter press (1). The compression mechanism (3) can receive the mud cake produced after the filter press (1) is filtered and can compress the mud cake into blocks.

3. The sludge treatment equipment according to claim 2, characterized in that: A suction pipe (104) extends into the water pipe (103). One end of the suction pipe (104) extends from the concentration tank (102) and is connected to a second ball valve (109). The second ball valve (109) can be connected to an external water pump to draw water from the water pipe (103). A filter pipe (110) is connected to one end of the suction pipe (104) extending into the water pipe (103).

4. The sludge treatment equipment according to claim 3, characterized in that: The sludge separation mechanism (2) includes a connecting box (201), which is fixedly installed on the lower surface of the concentration tank (102). A ring pipe (210) is fixedly installed inside the connecting box (201). The ring pipe (210) is connected to the lower surface of the concentration tank (102). A rotating rod (209) is rotatably installed inside the ring pipe (210). Six sets of separating blades (211) are fixedly installed at equal intervals on the outer surface of the rotating rod (209). The rotating rod (209) is fixedly connected to the output shaft of a first motor (203). The first motor (203) is fixedly installed at one end of the connecting box (201). This allows the rotating rod (209) to drive three sets of separating blades (211) to face upwards and form a W shape to receive the sludge while sealing the ring pipe (210).

5. The sludge treatment equipment according to claim 4, characterized in that: A U-shaped pipe (202) is connected to the lower surface of the ring pipe (210) so that the U-shaped pipe (202) can receive the dumped sludge. One end of the U-shaped pipe (202) extends out from the connecting box (201). A first spiral conveying blade (208) is rotatably installed inside the U-shaped pipe (202). The first spiral conveying blade (208) is fixedly connected to the output shaft of the second motor (204). The second motor (204) is fixedly installed at one end of the extended U-shaped pipe (202).

6. The sludge treatment equipment according to claim 5, characterized in that: Furthermore, a first pipe (205) is connected to the lower end of the outer surface of the U-shaped pipe (202) extending from the connecting box (201). The other end of the first pipe (205) is connected to the feed inlet of the peristaltic pump (206). The peristaltic pump (206) is fixedly installed at one end of the support leg of the filter press (1). A second pipe (207) is connected to the discharge port of the peristaltic pump (206). The other end of the second pipe (207) is connected to the feed inlet of the filter press (1).

7. The sludge treatment equipment according to claim 6, characterized in that: The compression mechanism (3) includes a funnel cylinder (301), which is fixedly installed at the lower end of the filter press (1). A second spiral conveying blade (302) is rotatably installed at the inner bottom of the funnel cylinder (301). One end of the second spiral conveying blade (302) is fixedly connected to the output shaft of a third motor (304), which is fixedly installed at one end of the funnel cylinder (301). The funnel cylinder (301) has a compression port (305) connected to its lower surface. A slanted slide plate (303) is provided at the upper end of the compression port (305). The slanted slide plate (303) is fixedly installed inside one end of the funnel cylinder (301), so that the second spiral conveying blade (302) can convey the received mud cake into the compression port (305).

8. The sludge treatment equipment according to claim 7, characterized in that: One end of the compression port (305) is connected to a first connecting cylinder (306), and a first hydraulic rod (307) is fixedly installed inside the first connecting cylinder (306). A first sealing plate (308) is fixedly installed at one end of the piston rod of the first hydraulic rod (307). The first sealing plate (308) slides inside the first connecting cylinder (306) to block the connection between the first sealing plate (308) and the compression port (305).

9. The sludge treatment equipment according to claim 8, characterized in that: The other end of the compression port (305) is connected to a second connecting cylinder (309). A second hydraulic rod (310) is fixedly installed inside the second connecting cylinder (309). A second sealing plate (311) is fixedly installed at one end of the piston rod of the second hydraulic rod (310). The second sealing plate (311) is L-shaped and slides between the second connecting cylinder (309) and the compression port (305).

10. The sludge treatment equipment according to claim 9, characterized in that: When the second sealing plate (311) is pushed into the compression port (305) by the second hydraulic rod (310), the horizontal surface of the L-shaped second sealing plate (311) can be pulled out from the second connecting cylinder (309) and block the upper end of the compression port (305) to prevent mud from falling into the second connecting cylinder (309).

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