Nomadic sludge curing production line equipment

Abstract

The invention provides nomadic sludge solidification production line equipment, which belongs to the technical field of sludge treatment, and comprises a cutter suction type dredging mechanism, a pumping conveying mechanism, a screening reduction mechanism, a concentration precipitation mechanism and a filter pressing dehydration mechanism, the cutter suction type dredging mechanism comprises a closed reamer head and a reamer driving shaft, and the reamer driving shaft is fixedly connected with an output shaft of a reamer motor; the pumping conveying mechanism comprises a feeding pipeline, a slurry pump body and a discharging pipeline, one end of the feeding pipeline is communicated with the closed reamer head, the other end of the feeding pipeline is connected with a feeding port of the slurry pump body, one end of the discharging pipeline is connected with a discharging port of the slurry pump body, and the other end of the discharging pipeline is connected with a discharging port of the slurry pump body. One end of the discharging pipeline is connected with a discharging port of the slurry pump body, and the other end of the discharging pipeline is connected with the feeding end of the screening reduction mechanism. The problems of environmental pollution and low treatment efficiency in the sludge treatment process can be solved.

Description

Technical Field

[0001] The invention belongs to the technical field of sludge treatment, and in particular relates to a nomadic sludge solidification production line equipment. Background Art

[0002] Beach mud often contains a large amount of heavy metals, organic matter and pathogenic microorganisms, which not only affect the ecological environment of the water body, but also pose a potential threat to human health.

[0003] At present, beach sludge treatment mainly adopts suction dredgers for excavation and transportation, and then solidification treatment is carried out through processes such as concentration and dehydration. The traditional beach sludge suction dredger process has the following main problems: first, the sludge is very easy to splash during the suction dredger, causing secondary pollution and affecting the surrounding environment; second, the solid-liquid separation efficiency is low, the classification effect is poor, and it is difficult to meet the classification and disposal requirements of sludge of different particle sizes; third, the sludge has a high water content and poor dehydration effect, which increases the difficulty and cost of subsequent disposal. In engineering practice, mechanical suction dredgers are currently mainly used in combination with concentration and dehydration equipment for treatment, but this method has problems such as large equipment size, large floor space, and high construction difficulty. In addition, a large amount of odor and dust are easily generated during the treatment process, which has a serious impact on the surrounding environment.

[0004] In addition, due to the lack of effective sealing and protective measures, construction workers are easily exposed to harmful substances, which poses a great safety hazard. Although some existing improved technologies have been optimized in some aspects, such as the use of closed suction heads and multi-stage screening, they still have not fundamentally solved the environmental pollution and treatment efficiency problems in the sludge treatment process.

[0005] Therefore, it is of great practical significance to develop a new type of nomadic sludge solidification production line equipment to achieve efficient and environmentally friendly treatment of sludge. Summary of the invention

[0006] In view of this, the present invention provides a nomadic sludge solidification production line equipment, which can solve the problems of environmental pollution and low treatment efficiency in the sludge treatment process.

[0007] The present invention is achieved in that:

[0008] The present invention provides a nomadic sludge solidification production line equipment, which includes a cutter suction dredging mechanism, a pumping and conveying mechanism, a screening and reducing mechanism, a concentration and sedimentation mechanism and a filter press dehydration mechanism; the cutter suction dredging mechanism includes a closed auger head and a auger drive shaft, and the auger drive shaft is fixedly connected to the output shaft of the auger motor; the pumping and conveying mechanism includes a feed pipe, a mud pump body and a discharge pipe, one end of the feed pipe is connected to the closed auger head, and the other end is connected to the feed port of the mud pump body, one end of the discharge pipe is connected to the discharge port of the mud pump body, and the other end is connected to the feed end of the screening and reducing mechanism; the screening The reduction mechanism includes a three-stage screening box, each of which is provided with an inclined screen, and the screens are, from top to bottom, a first-stage screen, a second-stage screen and a third-stage screen, the screen hole diameter of the first-stage screen is larger than the screen hole diameter of the second-stage screen, and the screen hole diameter of the second-stage screen is larger than the screen hole diameter of the third-stage screen; the concentration and sedimentation mechanism includes a conical sedimentation tank body, an overflow weir is provided at the upper part of the conical sedimentation tank body, and a conical mud discharge port is provided at the bottom of the conical sedimentation tank body; the filter press dehydration mechanism includes a filter press box, and a plurality of layers of filter press plates are provided in the filter press box, and a filter press chamber is formed between adjacent filter press plates.

[0009] On the basis of the above technical solution, the nomadic sludge solidification production line equipment of the present invention can also be improved as follows:

[0010] Among them, the closed reamer head includes an outer shell and a built-in reamer, the outer shell is cylindrical, with a mud inlet at the bottom and a mud outlet at the top, and the built-in reamer is fixedly installed on the reamer drive shaft. The built-in reamer is composed of multiple spiral cutting blades, and a gap is left between the outer edge of the cutting blade and the inner wall of the outer shell.

[0011] Furthermore, a feed hopper is provided on the top of the three-stage screening box, and a plurality of spray heads are provided in the feed hopper, and the spray heads are connected to the clean water tank through water pipes; a plurality of guide grooves are provided on the bottom of the three-stage screening box, and the guide grooves are arranged along the inclination direction of the screen, one end of the guide groove is connected to the screen, and the other end extends out of the three-stage screening box and is connected to the collecting hopper.

[0012] Furthermore, a plurality of layers of annular guide plates are provided on the inner wall of the conical sedimentation tank body. The annular guide plates are arranged in a spiral shape, and sedimentation channels are formed between adjacent annular guide plates. A plurality of guide holes are provided on the surface of the annular guide plates.

[0013] Furthermore, a fixed end plate and a movable end plate are respectively provided on both sides of the filter press case, the fixed end plate is fixedly connected to the filter press case, and the movable end plate is connected to the filter press case through a hydraulic cylinder; the filter press plate is slidably installed in the filter press case through a guide rod, and the two ends of the guide rod are respectively connected to the fixed end plate and the movable end plate.

[0014] Furthermore, a convex grid is provided on the surface of the filter press plate, and the convex grids of adjacent filter press plates are arranged opposite to each other; a sealing ring is provided on the edge of the filter press plate, and the sealing ring is made of elastic rubber material.

[0015] Furthermore, the mud pump body is a twin-screw pump, including a pump housing and a twin-screw rotor arranged in the pump housing, the twin-screw rotor is composed of a driving screw and a driven screw, the driving screw is connected to the output shaft of the pump motor, and the driven screw is meshed with the driving screw through a gear set.

[0016] Furthermore, a plurality of return pipes are provided on the top of the conical sedimentation tank body, one end of the return pipe is connected to the overflow weir, and the other end is connected to the water storage tank; the conical mud discharge port of the conical sedimentation tank body is connected to the feed port of the filter press box through the mud discharge pipe.

[0017] Furthermore, a vibration motor is provided on the outer wall of the three-stage screening box, and the vibration motor is connected to the three-stage screening box through a shock absorbing device; the shock absorbing device includes a spring support seat and a shock absorbing spring, one end of the shock absorbing spring is connected to the spring support seat, and the other end is connected to the three-stage screening box.

[0018] Furthermore, the shock absorbing device also includes a rubber ring.

[0019] Furthermore, the structural dimension relationship of the closed reamer head is defined as follows:

[0020]

[0021] Where D o D is the outer diameter of the shell (mm); i is the inner diameter of the outer shell (mm); h is the gap between the spiral cutting blade and the inner wall of the outer shell (mm); L is the length of the outer shell (mm).

[0022] Further, the shape of the spiral cutting blade is defined as follows:

[0023]

[0024] Where r is the distance from any point on the spiral to the axis (mm); 0is the distance from the starting point of the helix to the axis (mm); k is the pitch coefficient; θ is the rotation angle (rad).

[0025] Furthermore, the relationship between the inclination angle and the mesh size of the three-stage screening box is defined as follows:

[0026]

[0027] Where α is the screen tilt angle (°); H is the screen height difference (mm); L s d is the horizontal projection length of the screen (mm); 1 ,d 2 ,d 3 are the sieve hole diameters (μm) of the first, second and third level sieves respectively.

[0028] Furthermore, the structural parameter relationship of the conical sedimentation tank is defined as follows:

[0029]

[0030] β=55°~65°;

[0031]

[0032] In the formula, H c is the total height of the sedimentation tank (mm); D c is the top diameter of the sedimentation tank (mm); β is the cone bottom angle (°); S n is the area of ​​the nth layer of annular guide plate (mm 2 );S 0 is the area of ​​the top annular guide plate (mm 2 );λ is the area attenuation coefficient, which ranges from 0.1 to 0.2.

[0033] Furthermore, the relationship between the spacing between the filter press plates and the pressure distribution is defined as follows:

[0034]

[0035] Where, P(x) is the pressure at any position x of the filter press plate (MPa); P 0 is the initial pressure (MPa); μ is the pressure attenuation coefficient; x is the distance from the feed end (mm); L p is the total length of the filter press plate (mm); d p is the distance between adjacent filter press plates (mm).

[0036] Principle description:

[0037] 1. The size relationship of the closed reamer head is based on the principle of fluid mechanics, ensuring sufficient shearing space while avoiding silt blockage;

[0038] 2. The spiral cutting blade adopts Archimedean spiral to ensure cutting uniformity and conveying efficiency;

[0039] 3. The inclination angle of the screen is based on the principle of gravity screening to ensure uniform dispersion and automatic conveying of materials, and the screen hole size ratio is based on the optimization of classification efficiency;

[0040] 4. The sedimentation tank adopts multi-layer spiral diversion, and controls the area ratio of each layer through exponential decay to optimize the sedimentation efficiency;

[0041] 5. The pressure distribution of the filter press plate adopts an exponential decay model, taking into account the pressure transmission loss and boundary effect.

[0042] Compared with the prior art, the beneficial effects of the nomadic sludge solidification production line equipment provided by the present invention are as follows: the nomadic sludge solidification production line equipment proposed by the present invention successfully solves the environmental pollution problem in the traditional sludge treatment process, and effectively prevents splashing and odor diffusion during the sludge suction process through the design of the closed auger head. The equipment adopts a process combining multi-stage screening and concentrated sedimentation, which significantly improves the solid-liquid separation efficiency. Sludge of different particle sizes can be effectively separated for easy classification and disposal. Through the optimized design of the filter press system, deep dehydration of the sludge is achieved, and the moisture content of the final mud cake meets the design requirements, which is significantly improved compared with the traditional process.

[0043] In actual application, the equipment has the following significant advantages: First, the special structural design of the closed auger head significantly improves the suction efficiency and completely avoids the problem of sludge splashing; second, the twin-screw pump conveying system has good sealing, stable conveying pressure, and significantly better conveying efficiency than the traditional single-screw pump; third, the three-stage screening system has excellent grading effect, and the particle size distribution range of each level of products is precisely controlled, which is far better than the traditional process; fourth, the design of the multi-layer diversion sedimentation tank greatly shortens the sedimentation time and significantly improves the processing efficiency; fifth, the large-area filter press system has a significant dehydration effect and the processing capacity is comprehensively improved.

[0044] In addition, the equipment adopts modular design, which is easy to install and disassemble, has strong mobility, and can be quickly adjusted and optimized according to different engineering requirements. In terms of environmental protection, the entire treatment process is carried out in a closed environment, which effectively controls the emission of odor and dust. Environmental monitoring data show that it has significant environmental advantages compared with traditional equipment, and the emission of odor and dust has been effectively controlled. At the same time, the equipment shows excellent adaptability and reliability in actual engineering applications, and can meet the sludge treatment needs under different working conditions. By adopting advanced process design and innovative structural layout, the equipment not only improves the efficiency and quality of sludge treatment, but also greatly improves the working environment, providing a new technical solution for sludge treatment projects. During long-term operation, the equipment has shown stable performance and reliable operation status, low maintenance cost and high operation efficiency, which has been fully verified by engineering practice. Especially in sludge treatment projects in environmentally sensitive areas, the environmental protection advantages of this equipment are more prominent, providing important technical support for the implementation of similar projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0046] Figure 1 It is a structural schematic diagram of a nomadic sludge solidification production line equipment;

[0047] Figure 2 It is a schematic diagram of the closed reamer head structure;

[0048] Figure 3 It is a schematic diagram of the structure of the screening and reduction mechanism;

[0049] Figure 4 It is a schematic diagram of the pumping and conveying mechanism structure;

[0050] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0051] 10. Cutter suction dredging mechanism; 101. Closed auger head; 102. Auxiliary auger drive shaft; 103. Auxiliary auger motor; 11. Pumping and conveying mechanism; 111. Feed pipe; 112. Mud pump body; 113. Discharge pipe; 12. Screening and reduction mechanism; 120. Three-stage screening box; 121. Feed hopper; 122. Spray head; 123. Guide groove; 13. Concentration and sedimentation mechanism; 130. Conical sedimentation tank body; 131. Overflow weir; 132. Conical mud discharge port; 133. Annular guide plate; 1331. Guide hole; 14. Filter pressing and dehydration mechanism; 140. Filter press box; 141. Fixed end plate; 142. Movable end plate; 143. Guide rod; 15. Vibration motor; 16. Shock-absorbing device. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0053] like Figure 1-4 As shown, it is an embodiment of a nomadic sludge solidification production line equipment provided by the present invention. In this embodiment, it includes a cutter suction dredging mechanism 10, a pumping and conveying mechanism 11, a screening and reducing mechanism 12, a concentration and sedimentation mechanism 13 and a filter pressing and dehydrating mechanism 14; the cutter suction dredging mechanism 10 includes a closed reamer head 101 and a reamer drive shaft 102, and the reamer drive shaft 102 is fixedly connected to the output shaft of the reamer motor 103; the pumping and conveying mechanism 11 includes a feed pipe 111, a mud pump body 112 and a discharge pipe 113, one end of the feed pipe 111 is connected to the closed reamer head 101, and the other end is connected to the feed port of the mud pump body 112, one end of the discharge pipe 113 is connected to the discharge port of the mud pump body 112, and the other end is connected to the sieve The feeding end of the screening and reducing mechanism 12 is connected; the screening and reducing mechanism 12 includes a three-stage screening box 120, each stage of the screening box is provided with an inclined screen, and the screens are a first-stage screen, a second-stage screen and a third-stage screen from top to bottom, the screen hole diameter of the first-stage screen is larger than the screen hole diameter of the second-stage screen, and the screen hole diameter of the second-stage screen is larger than the screen hole diameter of the third-stage screen; the concentration and sedimentation mechanism 13 includes a conical sedimentation tank body 130, the upper part of the conical sedimentation tank body 130 is provided with an overflow weir 131, and the bottom of the conical sedimentation tank body 130 is provided with a conical mud discharge port 132; the filter pressing and dehydration mechanism 14 includes a filter press box 140, and the filter press box 140 is provided with multiple layers of filter press plates, and a filter press chamber is formed between adjacent filter press plates.

[0054] Among them, in the above technical solution, the closed reamer head 101 includes an outer shell and a built-in reamer, the outer shell is cylindrical, with a mud inlet at the bottom and a mud outlet at the top, and the built-in reamer is fixedly mounted on the reamer drive shaft 102, and the built-in reamer is composed of multiple spiral cutting blades, and a gap is left between the outer edge of the cutting blade and the inner wall of the outer shell.

[0055] Furthermore, in the above technical scheme, a feed hopper 121 is provided on the top of the three-stage screening box 120, and a plurality of spray heads 122 are provided in the feed hopper 121, and the spray heads 122 are connected to the clean water tank through water pipes; a plurality of guide grooves 123 are provided on the bottom of the three-stage screening box 120, and the guide grooves 123 are arranged along the inclination direction of the screen, one end of the guide groove 123 is connected to the screen, and the other end extends out of the three-stage screening box 120 and is connected to the collecting hopper.

[0056] Furthermore, in the above technical solution, a plurality of layers of annular guide plates 133 are provided on the inner wall of the conical sedimentation tank body 130 . The annular guide plates 133 are arranged in a spiral shape, and sedimentation channels are formed between adjacent annular guide plates 133 . A plurality of guide holes 1331 are provided on the surface of the annular guide plates 133 .

[0057] Furthermore, in the above technical solution, a fixed end plate 141 and a movable end plate 142 are respectively provided on both sides of the filter press case 140, the fixed end plate 141 is fixedly connected to the filter press case 140, and the movable end plate 142 is connected to the filter press case 140 through a hydraulic cylinder; the filter press plate is slidably installed in the filter press case 140 through a guide rod 143, and the two ends of the guide rod 143 are respectively connected to the fixed end plate 141 and the movable end plate 142.

[0058] Furthermore, in the above technical solution, a convex grid is provided on the surface of the filter press plate, and the convex grids of adjacent filter press plates are arranged oppositely; a sealing ring is provided on the edge of the filter press plate, and the sealing ring is made of elastic rubber material.

[0059] Furthermore, in the above technical solution, the mud pump body 112 is a twin-screw pump, including a pump housing and a twin-screw rotor arranged in the pump housing. The twin-screw rotor is composed of a driving screw and a driven screw. The driving screw is connected to the output shaft of the pump motor, and the driven screw is meshed with the driving screw through a gear set.

[0060] Furthermore, in the above technical solution, a plurality of return pipes are provided on the top of the conical sedimentation tank body 130, one end of the return pipe is connected to the overflow weir 131, and the other end is connected to the water storage tank; the conical mud discharge port 132 of the conical sedimentation tank body 130 is connected to the feed port of the filter press casing 140 through the mud discharge pipe.

[0061] Furthermore, in the above technical solution, a vibration motor 15 is provided on the outer wall of the three-stage screening box 120, and the vibration motor 15 is connected to the three-stage screening box 120 through a shock absorbing device 16; the shock absorbing device 16 includes a spring support seat and a shock absorbing spring, one end of the shock absorbing spring is connected to the spring support seat, and the other end is connected to the three-stage screening box 120.

[0062] Furthermore, in the above technical solution, the shock absorbing device 16 also includes a rubber ring.

[0063] The specific implementation manner of the nomadic sludge solidification production line equipment of the present invention is described in detail below.

[0064] The nomadic sludge solidification production line equipment of the present invention is mainly composed of five main parts: a suction dredging mechanism, a pumping and conveying mechanism, a screening and reduction mechanism, a concentration and sedimentation mechanism, and a filter pressing and dehydration mechanism. The mechanisms are connected and sealed by pipes and flanges.

[0065] The cutter suction dredging mechanism mainly includes a closed auger head and a auger drive shaft. The closed auger head adopts an integral stainless steel structure. The outer shell is cylindrical, the outer diameter of the cylinder is between 450 mm and 650 mm, and the length is 1.8 to 2.2 times the outer diameter. The mud inlet at the bottom adopts a conical structure with a cone angle of 75 to 85 degrees. The bottom diameter of the mud inlet is 0.6 to 0.7 times the outer diameter of the outer shell, and the diameter of the mud outlet at the top is 0.4 to 0.5 times the outer diameter of the outer shell; the built-in auger adopts high-strength Made of wear-resistant alloy steel, it consists of 6 to 8 spiral cutting blades. The helix angle of each cutting blade is 38 to 42 degrees, the blade thickness is 12 to 15 mm, and the gap between the outer edge of the blade and the inner wall of the shell is controlled between 28 and 32 mm. The reamer drive shaft is made of 45# quenched and tempered steel with a shaft diameter of 80 to 100 mm. It is connected to the output shaft of the reamer motor through a spline. The reamer motor has a power of 22 to 30 kW and a speed of 180 to 220 rpm. The special structural design of the closed reamer head can not only effectively prevent environmental pollution caused by sludge splashing, but also ensure high suction efficiency and conveying capacity through reasonable gap setting and spiral angle design.

[0066] The pumping and conveying mechanism adopts a twin-screw pump structure, including a pump housing, a twin-screw rotor and a transmission mechanism. The pump housing is manufactured using an integral casting process and is made of QT450-10 ductile iron. The housing inner cavity diameter is 180 mm to 220 mm, and the length is 4.5 to 5.5 times the inner cavity diameter; the twin-screw rotor consists of an active screw and a driven screw, which achieve synchronous reverse rotation through precise meshing gears. The screw is tempered with 42CrMo, with a helix angle of 48 to 52 degrees and a pitch of 1.2 to 1.5 times the outer diameter of the screw. The radial clearance between the screw and the inner wall of the pump housing is controlled between 0.15 mm and 0.25 mm; the transmission mechanism includes a pump motor, a reducer and a coupling. The pump motor power is 37 kW to 45 kW, and the speed is 980 to 1450 rpm. The speed is reduced to 280 to 320 rpm through a reducer. The twin-screw pump structure has the advantages of stable transportation, good sealing, and low wear, and is particularly suitable for transporting sludge with a high solid content.

[0067] The screening and reduction mechanism is the core part of the entire production line. It adopts a three-stage tandem screening structure. The screening box of each stage is a rectangular structure, manufactured using carbon steel welding technology. The box length is 2400 mm to 2800 mm, the width is 1200 mm to 1500 mm, and the height is 800 mm to 1000 mm; the screen is made of stainless steel woven mesh, the mesh diameter of the first stage mesh is 70 microns to 75 microns, and the mesh diameter of the second stage mesh is 55 microns to 60 Micron, the mesh diameter of the third-level screen is 45 microns to 50 microns, and the inclination angle of the screen is 15 degrees to 20 degrees; multiple rows of spray devices are set above the screen, the spray head adopts a fan-shaped nozzle, the injection pressure is 0.3 MPa to 0.4 MPa, and the nozzle spacing is 200 mm to 250 mm; the guide groove set at the bottom of the screening box adopts a V-shaped groove structure, the groove wall inclination angle is 60 degrees, and the groove bottom width is 100 mm to 120 mm, which is used to collect the screen material and import it into the aggregate hopper. At the same time, a vibration motor with a power of 2.2 kilowatts is installed on the outer wall of the screening box, and the vibration frequency is 960 rpm to 1440 rpm. It is connected to the box through a shock-absorbing device. The shock-absorbing device adopts 4 groups of spring shock absorbers, and the stiffness coefficient of each group of springs is 60 kN / m to 80 kN / m. This multi-stage screening structure design not only improves the screening efficiency, but also can obtain products with more uniform particle size.

[0068] The concentrating sedimentation mechanism adopts a conical sedimentation tank structure. The tank body is made of carbon steel welding, and the inner wall is coated with anti-corrosion materials. The top diameter of the sedimentation tank is 3000 mm to 3500 mm, the total height is 2.0 to 2.5 times the top diameter, and the cone bottom angle is 55 to 65 degrees. 8 to 10 layers of annular guide plates are set on the inner wall of the tank body. The guide plates are made of stainless steel plates with a thickness of 4 mm to 6 mm. The guide holes with a diameter of 30 mm to 40 mm are evenly opened on the plate surface, and the vertical spacing between adjacent guide plates is 400 mm to 500 mm. An overflow weir is set at the top of the sedimentation tank. The height of the weir mouth is adjustable. It is connected to the water storage tank through 4 to 6 return pipes with a diameter of 100 mm to 150 mm. A pneumatic butterfly valve is set at the conical mud discharge port, and automatic mud discharge is realized through the PLC control system. The design of this multi-layer guide structure significantly improves the sedimentation efficiency and reduces the sedimentation time.

[0069] The filter press dehydration mechanism adopts a plate-and-frame filter press structure. The filter press box is welded with carbon steel profiles. The box length is 4000 mm to 4500 mm, the width is 1500 mm to 1800 mm, and the height is 1800 mm to 2000 mm. The filter press plate is made of polypropylene, with a specification of 1250 mm × 1250 mm and a thickness of 45 mm to 50 mm. The convex grid depth set on the surface of each filter press plate is 2 mm to 3 mm, and the grid spacing is 15 mm to 20 mm. The filter press plate is slidably installed in the box through 4 guide rods. The guide rods are made of 45 steel, with a diameter of 60 mm to 80 mm and a chrome-plated surface. The spacing between adjacent filter press plates is 25 mm to 30 mm, and the extrusion force is provided by a hydraulic cylinder. The working pressure of the hydraulic cylinder is 15 MPa to 20 MPa. The sealing ring set on the edge of the filter press plate is made of nitrile rubber, with a cross-sectional diameter of 20 mm to 25 mm and a hardness of 65 to 70 Shore degrees. This filter press structure not only has a large filtration area, but also has a good filtration effect and a low moisture content in the mud cake.

[0070] During use, the suction dredging mechanism is first started, and the sludge at the bottom of the pool is sucked by the closed auger head. The chopped sludge is transported to the screening and reduction mechanism through a closed pipeline under the action of a twin-screw pump. After three-stage screening, solid particles of different particle sizes are separated. The screened material is collected through the guide trough and transported out by a closed vehicle. The screened material enters the concentration and sedimentation mechanism for mud and water separation. The supernatant is returned to the reservoir for recycling. The bottom sludge is dehydrated by the filter press dehydration mechanism to obtain a mud cake with a moisture content of 40% to 50%. The mud cake is stored and dried and then transported out uniformly. The entire treatment process is carried out in a closed environment, which effectively prevents the emission of dust and odor and meets the requirements of environmental protection treatment.

[0071] In practical applications, the nomadic sludge solidification production line equipment of the present invention has the following advantages: the design of the closed auger head avoids the splashing problem in the traditional suction dredging process; the use of a twin-screw pump ensures the stability and reliability of sludge transportation; the three-stage screening structure improves the classification efficiency, and the obtained product has a uniform particle size; the multi-layer diversion sedimentation tank shortens the sedimentation time and improves the processing efficiency; the filter press system adopts a large-area filter press plate design, which significantly improves the dehydration effect. At the same time, the entire system adopts a modular design, and each processing unit can be adjusted and optimized according to actual needs, which has strong adaptability and promotion value.

[0072] On the basis of the above specific implementation methods, the present invention further optimizes and defines the structural parameters of each key component and their mutual relationships to improve the overall performance and working efficiency of the equipment.

[0073] In the structural design of the closed reamer head, in order to ensure the reamer suction efficiency and prevent clogging, the structural relationship between the outer shell and the built-in reamer was studied in depth. Through fluid mechanics analysis and a large amount of experimental data verification, the optimal structural parameter relationship was determined: the ratio of the outer diameter to the inner diameter of the outer shell meets The gap h between the spiral cutting blade and the inner wall of the outer shell needs to be dynamically adjusted according to the viscosity of the sludge. When the sludge water content is low, a larger value is taken, and when the water content is high, a smaller value is taken. The ratio of the outer shell length to the outer diameter satisfies This structural ratio ensures sufficient suction space while avoiding excessive weight of the equipment. At the same time, the shape of the spiral cutting blade needs to satisfy the Archimedean spiral equation r = r 0 +kθ, its derivative equation It shows that the pitch coefficient k is a constant. This design ensures that the cutting blade can cut and transport the sludge evenly.

[0074] For the structural optimization of the three-stage screening box, the relationship between the screen inclination angle and the screening efficiency is considered. By establishing a dynamic model of the screen inclination angle and material movement, the optimal inclination angle relationship is determined:

[0075] This angle range can ensure that the material slides evenly under the action of gravity while having enough time for full screening. In the design of the screen aperture, a geometric series relationship is used. This progressive aperture design not only improves the classification efficiency, but also avoids the clogging problem of fine particles in single-stage screening.

[0076] The key to the concentration and sedimentation mechanism lies in the structural design of the conical sedimentation tank and the arrangement of the annular guide plate. Through fluid mechanics analysis, the optimal structural ratio of the sedimentation tank is determined: the ratio of the total height to the top diameter satisfies The cone bottom angle β is controlled between 55 and 65 degrees. In order to optimize the arrangement of the annular guide plates, an area reduction coefficient is introduced so that the area ratio of adjacent guide plates satisfies Where λ is the area attenuation coefficient, ranging from 0.1 to 0.2. This gradual area change ensures sufficient sedimentation area and avoids secondary suspension of bottom sludge.

[0077] The core of the filter press mechanism is the pressure distribution and spacing control between the filter press plates. By establishing a pressure transmission model, the pressure distribution equation at any position of the filter press plate is obtained:

[0078] The pressure attenuation coefficient μ needs to be adjusted according to the moisture content of the sludge; at the same time, the ratio of the spacing between the filter press plates to the total length needs to meet This structural design not only ensures sufficient filtering area, but also avoids sealing failure caused by excessive local pressure.

[0079] In the layout of the entire production line, a complete set of spatial layout models was established by optimizing the positional relationship between each processing unit. The height difference of the center line of each processing unit satisfies the arithmetic progression relationship. The connecting pipes of adjacent units adopt the shortest path principle, and the pipe angle does not exceed 45 degrees. This layout not only reduces the transmission loss, but also facilitates the maintenance and overhaul of the equipment. At the same time, the distance between each processing unit also needs to consider the process requirements and equipment overhaul space, and is generally controlled between 1.5 and 2.0 times the maximum size of the equipment.

[0080] The innovations of these optimization designs and parameter limits are mainly reflected in the following aspects: first, the structural relationship of each key component is described through a strict mathematical model, making the design and manufacture of the equipment more accurate and controllable; second, the continuous and differentiable mathematical function is introduced to describe the shape and position relationship of the components, which is convenient for parameter optimization and adjustment; third, the exponential relationship is used to describe the pressure distribution and area change, which is more in line with the actual engineering characteristics; finally, the determination of each parameter range is based on a large amount of experimental data and engineering practice experience, which is highly practical and reliable. Through these optimization designs, the treatment efficiency and operation stability of the equipment are significantly improved, providing a new technical solution for sludge treatment engineering.

[0081] Specifically, the principle of the present invention is: the nomadic sludge solidification production line equipment of the present invention is based on fluid mechanics, solid-liquid separation and filter pressing theory, and realizes efficient and environmentally friendly sludge treatment through system structural optimization and process innovation. First, in the design of the closed reamer head, the shape and gap of the reamer are optimized by the principle of fluid mechanics, so that a special flow field structure is formed between the cutting blade and the outer shell, which not only ensures sufficient shearing action, but also avoids splashing caused by eddy currents; through the reasonable design of the spiral cutting blade, the spiral propulsion principle is used to improve the sludge conveying efficiency. Secondly, in the pumping system, a twin-screw pump structure is adopted, and a closed conveying cavity is formed through the synchronous reverse rotation of the two screws, and the stable conveying of the sludge is realized by the volumetric conveying principle; the special surface design of the screw not only ensures good sealing, but also reduces power consumption. In the screening system, based on the particle classification theory, through multi-stage series connection and reasonable screen inclination design, the synergistic effect of gravity and vibration is used to improve the screening efficiency; at the same time, the screen adopts a special weaving structure, which not only ensures sufficient passing area, but also avoids blockage. In the sedimentation system, the laminar sedimentation theory is used to extend the water flow path, increase the sedimentation time, and improve the mud-water separation effect through the setting of multi-layer guide plates; the spiral arrangement of the guide plates forms a stable flow field structure and avoids the short-flow phenomenon. In the filter press system, based on the capillary phenomenon and the principle of mechanical filter press, the structure and arrangement of the filter press plate are optimized to increase the effective filtration area and improve the dehydration efficiency; the reasonable design of pressure distribution avoids the failure of the seal caused by excessive local pressure. The various processing units of the entire system are arranged according to the law of material flow, and gravity transportation is used to reduce energy consumption and improve operating efficiency. Through the application of these innovative technical principles, the environmental pollution problems existing in traditional sludge treatment equipment have been successfully solved, and efficient and environmentally friendly treatment of sludge has been achieved.

[0082] Embodiment 1:

[0083] Taking a certain city beach silt treatment project as an example, the total length of the river section to be treated is 2,800 meters, the beach width ranges from 25 meters to 45 meters, the silt thickness ranges from 0.8 meters to 2.5 meters, and the silt moisture content ranges from 125% to 165%. Both sides of the beach are residential areas, with strict requirements for environmental protection and limited construction sites. The nomadic silt solidification production line equipment used in this embodiment is installed on a flat-bed ship with a length of 28.5 meters and a width of 12.5 meters, and the total power of the equipment is 185 kilowatts.

[0084] The outer shell of the closed reamer head is made of 316L stainless steel, with an outer diameter of 580 mm, an inner diameter of 520 mm and a total length of 1160 mm. The bottom mud inlet adopts a conical structure with a cone angle of 82 degrees. The bottom diameter of the mud inlet is 380 mm and the top mud outlet diameter is 265 mm. The built-in reamer is made of high-chromium alloy steel and consists of 8 spiral cutting blades. Each blade has a helical angle of 40 degrees, a blade thickness of 14 mm, and a gap of 30 mm between the outer edge and the inner wall of the shell. The reamer drive shaft is made of 45# quenched and tempered steel with a shaft diameter of 92 mm. It is connected to the output shaft of the reamer motor with a power of 26 kW through a spline and has an operating speed of 200 rpm.

[0085] The pumping and conveying mechanism adopts QT450-10 ductile iron pump housing, with an inner cavity diameter of 205 mm and a length of 985 mm. The twin-screw rotor adopts 42CrMo quenching and tempering treatment, with a helix angle of 50 degrees, a pitch of 282 mm, and a radial clearance of 0.2 mm with the inner wall of the pump housing. The transmission mechanism adopts a 42 kW pump motor with a speed of 1420 rpm, and the speed is reduced to 295 rpm through a reducer with a reduction ratio of 4.8. The pumping pipeline adopts a stainless steel pipe with an outer diameter of 219 mm and a wall thickness of 8 mm, and the pipeline connection adopts a DN200 flange connection.

[0086] The three-stage screening box of the screening reduction mechanism is made of Q345B carbon steel, with a box length of 2650 mm, a width of 1350 mm, and a height of 920 mm. The screen is woven with 904L stainless steel wire, with a first-stage screen aperture of 72 microns, a second-stage screen aperture of 58 microns, a third-stage screen aperture of 46 microns, and a screen inclination angle of 18 degrees. The spray device adopts a fan-shaped nozzle, a spray pressure of 0.35 MPa, and a nozzle spacing of 220 mm. The guide groove adopts a V-shaped structure, with a groove wall inclination of 60 degrees and a groove bottom width of 110 mm. The vibration motor has a power of 2.2 kW and a vibration frequency of 1150 rpm. The shock-absorbing device adopts 4 sets of spring shock absorbers, each with a spring stiffness coefficient of 72 kN / m.

[0087] The conical sedimentation tank of the concentration sedimentation mechanism is made of Q345B carbon steel, with an epoxy resin anti-corrosion layer coated on the inner wall. The top diameter of the tank is 3200 mm, the total height is 7360 mm, and the cone bottom angle is 62 degrees. Nine layers of annular guide plates are set on the inner wall, using 316L stainless steel plates with a thickness of 5 mm, a guide hole diameter of 35 mm, and a vertical spacing of 460 mm between adjacent guide plates. The overflow weir adopts an adjustable structure and is connected to a water storage tank with a volume of 85 cubic meters through 6 return pipes with a diameter of 125 mm. The bottom mud discharge is controlled by a DN150 pneumatic butterfly valve.

[0088] The filter press dewatering mechanism adopts a carbon steel profile welded box with a length of 4250 mm, a width of 1650 mm and a height of 1920 mm. The filter press plate is made of polypropylene, with a specification of 1250 mm × 1250 mm, a thickness of 48 mm, a surface convex grid depth of 2.5 mm, and a grid spacing of 18 mm. The 4 guide rods are made of 45# steel, with a diameter of 72 mm and a surface hard chrome layer thickness of 0.05 mm. The spacing between adjacent filter press plates is 28 mm, and the working pressure of the hydraulic cylinder is 18 MPa. The sealing ring is made of nitrile rubber, with a cross-sectional diameter of 22 mm and a hardness of 68 Shore degrees.

[0089] The equipment has shown excellent performance in actual operation. Through statistical analysis of the operating data under different working conditions, a detailed operating parameter table has been developed, as follows.

[0090] Table 1 Operation parameters of the auger head for sludge with different moisture contents:

[0091]

[0092] Table 2 Screening parameters of sludge with different particle sizes:

[0093]

[0094] Table 3 Filter pressing parameters of sludge with different solid contents:

[0095]

[0096] In the actual operation process, the key process parameters are dynamically adjusted according to the on-site monitoring data. During the suction operation, the auger head is buried between 75% and 85% of the sludge layer thickness, and the auger speed is adjusted between 185 rpm and 205 rpm with the change of sludge moisture content. The working pressure of the pumping system is always maintained between 0.8 MPa and 1.2 MPa, and the motor speed is adjusted by the frequency converter to adapt to different working conditions. The screening system maintains the best classification effect by adjusting the vibration frequency and spraying pressure, and the moisture content of the screen is controlled below 85%. The sludge interface height of the sedimentation tank is controlled between 2.5 meters and 3.2 meters by the online monitoring system, and the sludge discharge frequency is automatically increased when the interface rises. The filter press system adopts a segmented boosting method, with an initial pressure of 8 MPa and a boost of 2 MPa every 10 minutes until the set pressure is reached.

[0097] In a complete working cycle, the equipment can process 75 to 95 cubic meters of undisturbed sludge per hour. After treatment, the oversize is divided into three levels according to the particle size: the first level particle size is greater than 72 microns, accounting for 15% of the total; the second level particle size is between 58 and 72 microns, accounting for 25% of the total; the third level particle size is between 46 and 58 microns, accounting for 30% of the total. After sedimentation and filter pressing, the moisture content of the undersize is reduced to between 42% and 48%, and the mud cake strength meets the storage requirements. The residual water generated by the system is treated and reused in the spray system, and the water replenishment is only 8% to 12% of the total water volume of the system.

[0098] In terms of environmental protection, strict sealing and deodorization measures are taken during the operation of the equipment. An air curtain is set up in the suction operation area to prevent the spread of odor. The pumping pipeline adopts a double-layer structure, and the middle is filled with insulation material, which is both heat-insulating and sound-proof. The screening system and the filter press system are both set in a closed cabin, which maintains a slightly negative pressure state. The exhaust gas is treated by activated carbon adsorption and meets the emission standards. The system operation noise measured at 1 meter around the equipment does not exceed 85 decibels, and the vibration level meets environmental protection requirements.

[0099] The entire treatment project lasted 85 days, treating a total of 138,500 cubic meters of beach sludge, with an average daily treatment volume of 1,629 cubic meters. The equipment operated stably, with a mechanical reliability rate of more than 98%, and only two planned maintenances were carried out. The depth of the beach sludge after treatment was reduced by 0.8 meters to 2.5 meters, the beach water quality was significantly improved, and the transparency increased by 2.5 times. According to the inspection of the environmental protection department, no secondary pollution occurred during the treatment process, and the air quality in the residential area reached 100%, which won the praise of the surrounding residents.

[0100] A lot of practical experience has been accumulated during the implementation of the project. First, the modular design of the equipment has significant advantages, which is easy to transport and install. The weight of a single module is controlled below 8 tons, and the maximum size does not exceed 6 meters, which is convenient for road transportation. Secondly, the application of the automatic control system has greatly reduced manual operation, and the main process parameters have been automatically adjusted, which has improved operating efficiency and safety. Thirdly, the anti-corrosion measures of the equipment have good effects. The key components are made of corrosion-resistant materials, and the outer wall is made of special anti-corrosion coatings to ensure long-term and stable operation. Finally, the equipment is easy to maintain, the main wearing parts are standard parts, and the spare parts are easy to replace, which reduces the maintenance cost.

[0101] Embodiment 2:

[0102] Taking the silt treatment project of a coastal bathing beach as an example, the total area of ​​the treatment area is 82,000 square meters, the silt thickness is unevenly distributed, the deepest is 4.2 meters, the shallowest is 0.6 meters, the average thickness is 2.1 meters, and the silt contains a large amount of shell debris and sea sand. Because the treatment area is close to the tourist resort, strict requirements are imposed on environmental protection and operation time, and the influence of seawater tides needs to be considered. The nomadic silt solidification production line equipment used in this embodiment is built on two flat-bed ships operating in parallel, with a main ship length of 32.5 meters and a width of 15.8 meters, a deputy ship length of 22.5 meters and a width of 12.5 meters, and a total equipment power of 265 kilowatts.

[0103] Considering the particularity of coastal mud, the structural parameters of the closed auger head are optimized. The outer shell adopts a double-layer structure, the inner layer is made of wear-resistant alloy steel, and the outer layer is made of 316L stainless steel, with an outer diameter of 620 mm, an inner diameter of 542 mm, and a total length of 1285 mm. According to fluid dynamics analysis, the outer shell structure must meet the following relationship:

[0104] Where h is the gap between the spiral cutting blade and the inner wall of the outer shell, which is 39 mm. The ratio of the outer shell length to the outer diameter satisfies: Ensures sufficient mixing space.

[0105] The built-in reamer is made of high-chromium tungsten alloy steel and consists of 8 spiral cutting blades. The spiral line equation satisfies:

[0106] r = 85 + 26θ, where r is the distance from any point on the spiral to the axis (unit: mm), θ is the rotation angle (unit: radians), and the initial radius r 0 Take 85 mm, and the pitch coefficient k is 26. The blade thickness is 16 mm, and the hardness reaches HRC62. The reamer drive shaft is made of 42CrMo material, with a shaft diameter of 108 mm, connected to the reamer motor with a power of 38 kW through a coupling, and the working speed is 185 rpm.

[0107] The screening and reduction system adopts a special screen layout scheme, and the inclination angle of the three-level screen meets the following requirements:

[0108] Where H is the height difference of the screen 580 mm, L s The horizontal projection length of the screen is 2636 mm. The ratio of the mesh diameters of the three-level screens meets the following requirements: where d 1 Take 75 microns and calculate d 2 45.5 μm, d 3 The screening box is made of Q345B carbon steel, with a length of 3200 mm, a width of 1850 mm and a height of 1150 mm.

[0109] The structural parameters of the conical sedimentation tank satisfy the following relationship:

[0110] Where H c The total height of the sedimentation tank is 8460 mm, D c The top diameter is 3600 mm, and the cone bottom angle β is 62 degrees. The area distribution of the annular guide plate meets the following requirements: Where S n is the area of ​​the nth layer of guide plate, S 0 The top deflector has an area of ​​10.18 square meters, with 12 layers of deflectors in total. The deflectors are made of 2205 duplex stainless steel, with a thickness of 6 mm and a deflector hole diameter of 42 mm.

[0111] The pressure distribution of the filter press system meets the following requirements:

[0112] Where P 0 is the feed end pressure 22 MPa, x is the distance from the feed end, L p The total length of the filter press plate is 4850 mm. The ratio of the filter press plate spacing to the total length is: Therefore, the spacing between the filter press plates is determined to be 121 mm. The filter press plates are made of modified polypropylene, with specifications of 1500 mm × 1500 mm and a thickness of 52 mm.

[0113] The equipment has shown excellent adaptability in actual operation, especially in the treatment of seashore mud containing shell debris. The processing data statistics are as follows.

[0114] Table 4 Operation parameters corresponding to tidal conditions:

[0115]

[0116] Table 5 Screening parameters at different shell contents:

[0117]

[0118] Table 6 Filter press parameters under different salinity conditions:

[0119]

[0120] In actual operation, the equipment can effectively cope with the challenges brought by tidal changes. At high tide, the depth and speed of the auger head are adjusted to maintain a stable mud intake; at low tide, a mobile diversion trough is used to ensure continuous operation. The system is equipped with automatic salinity compensation control. When the feed salinity increases, the filtration time and pressure are automatically extended. For areas with high content of shell debris, the vibration frequency and flushing pressure are increased to avoid screen blockage.

[0121] The entire treatment project lasted 125 days, treating a total of 186,500 cubic meters of coastal sludge, with an average daily treatment volume of 1,492 cubic meters. The equipment had high operating reliability, with a mechanical integrity rate of 96.5%. After treatment, the depth of sludge in the coastal area was significantly reduced, the water quality was significantly improved, the landscape function was restored, and it was reopened to tourists. During the implementation of the project, we accumulated rich experience in coastal sludge treatment, providing important technical references for similar projects.

Claims

1. A nomadic sludge solidification production line equipment, characterized in that: The invention comprises a cutter suction dredging mechanism (10), a pumping and conveying mechanism (11), a screening and reducing mechanism (12), a concentration and sedimentation mechanism (13) and a filter pressing and dewatering mechanism (14); the cutter suction dredging mechanism (10) comprises a closed reamer head (101) and a reamer drive shaft (102), wherein the reamer drive shaft (102) is fixedly connected to the output shaft of a reamer motor (103); the pumping and conveying mechanism (11) comprises a feed pipe (111), a mud pump body (112) and a discharge pipe (113), wherein one end of the feed pipe (111) is connected to the closed reamer head (101) and the other end is connected to the feed port of the mud pump body (112); one end of the discharge pipe (113) is connected to the discharge port of the mud pump body (112) and the other end is connected to the feed port of the screening and reducing mechanism (12). The end is connected; the screening and reducing mechanism (12) comprises a three-stage screening box (120), each stage of the screening box is provided with an inclined screen, and the screens are, from top to bottom, a first-stage screen, a second-stage screen and a third-stage screen, the screen hole diameter of the first-stage screen is larger than the screen hole diameter of the second-stage screen, and the screen hole diameter of the second-stage screen is larger than the screen hole diameter of the third-stage screen; the concentration and sedimentation mechanism (13) comprises a conical sedimentation tank body (130), an overflow weir (131) is provided at the top of the conical sedimentation tank body (130), and a conical mud discharge port (132) is provided at the bottom of the conical sedimentation tank body (130); the filter pressing and dehydration mechanism (14) comprises a filter press box (140), and a plurality of filter press plates are provided in the filter press box (140), and a filter press chamber is formed between adjacent filter press plates.

2. A nomadic sludge solidification production line equipment according to claim 1, characterized in that: The closed reamer head (101) comprises an outer shell and an internal reamer, the outer shell is cylindrical, with a mud inlet at the bottom and a mud outlet at the top, the internal reamer is fixedly mounted on the reamer drive shaft (102), and the internal reamer is composed of a plurality of spiral cutting blades, with a gap between the outer edge of the cutting blade and the inner wall of the outer shell.

3. A nomadic sludge solidification production line equipment according to claim 2, characterized in that: A feed hopper (121) is provided on the top of the three-stage screening box (120), a plurality of spray heads (122) are provided in the feed hopper (121), and the spray heads (122) are connected to a clean water tank via a water pipe; a plurality of guide grooves (123) are provided on the bottom of the three-stage screening box (120), and the guide grooves (123) are arranged along the inclination direction of the screen, one end of the guide groove (123) is connected to the screen, and the other end extends out of the three-stage screening box (120) and is connected to a collecting hopper.

4. The nomadic sludge solidification production line equipment according to claim 3 is characterized in that: A plurality of annular guide plates (133) are provided on the inner wall of the conical sedimentation tank body (130); the annular guide plates (133) are arranged in a spiral shape, and a sedimentation channel is formed between adjacent annular guide plates (133); and a plurality of guide holes (1331) are provided on the surface of the annular guide plates (133).

5. A nomadic sludge solidification production line equipment according to claim 4, characterized in that: A fixed end plate (141) and a movable end plate (142) are respectively provided on both sides of the filter press housing (140); the fixed end plate (141) is fixedly connected to the filter press housing (140); and the movable end plate (142) is connected to the filter press housing (140) via a hydraulic cylinder; the filter press plate is slidably installed in the filter press housing (140) via a guide rod (143); and the two ends of the guide rod (143) are respectively connected to the fixed end plate (141) and the movable end plate (142).

6. The nomadic sludge solidification production line equipment according to claim 5 is characterized in that: The surface of the filter press plate is provided with a convex grid, and the convex grids of adjacent filter press plates are arranged oppositely; the edge of the filter press plate is provided with a sealing ring, and the sealing ring is made of elastic rubber material.

7. The nomadic sludge solidification production line equipment according to claim 6 is characterized in that: The mud pump body (112) is a twin-screw pump, comprising a pump housing and a twin-screw rotor arranged in the pump housing, wherein the twin-screw rotor is composed of a driving screw and a driven screw, wherein the driving screw is connected to the output shaft of the pump motor, and the driven screw is meshed with the driving screw through a gear set for transmission.

8. The nomadic sludge solidification production line equipment according to claim 7 is characterized in that: A plurality of return pipes are provided on the top of the conical sedimentation tank body (130), one end of the return pipe is connected to the overflow weir (131), and the other end is connected to the water storage tank; the conical mud discharge port (132) of the conical sedimentation tank body (130) is connected to the feed port of the filter press housing (140) through the mud discharge pipe.

9. The nomadic sludge solidification production line equipment according to claim 8 is characterized in that: A vibration motor (15) is provided on the outer wall of the three-stage screening box (120), and the vibration motor (15) is connected to the three-stage screening box (120) via a shock absorbing device (16); the shock absorbing device (16) comprises a spring support seat and a shock absorbing spring, one end of the shock absorbing spring is connected to the spring support seat, and the other end is connected to the three-stage screening box (120).

10. The nomadic sludge solidification production line equipment according to claim 9, characterized in that: The shock absorbing device (16) further comprises a rubber ring.

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