Sludge suction and dehydration treatment vehicle

Abstract

A sludge suction and dehydration treatment vehicle, comprising a vehicle frame (1). An enclosed compartment (4) is provided above a chassis of the vehicle frame (1), and a powertrain is provided under the chassis. A PAM preparation and feeding system (2), a trash screening machine (3), a sludge collecting device (5), a sludge conditioning device (6), a high-pressure membrane filter press system (9), and a sludge discharging conveyor (15) are provided in the enclosed compartment (4) in sequence. The input end of the trash screening machine (3) is connected to a corrugated conveying pipe (10). An end of the corrugated conveying pipe (10) is provided with a sludge suction pump (14). The output end of the trash screening machine (3) is connected to the sludge collecting device (5). A feeding pump (21) is provided at the top of the sludge collecting device (5). The feeding pump (21) pumps, by means of a pipe, sludge in the sludge collecting device (5) to the sludge conditioning device (6). The output end of the PAM preparation and feeding system (2) is connected to a pipe of the feeding pump (21). The output end of the sludge conditioning device (6) is connected to the high-pressure membrane filter press system (9). The sludge discharging conveyor (15) is disposed below the high-pressure membrane filter press system (9) to discharge sludge.

Description

A sewage suction and dehydration treatment vehicle Technical Field

[0001] The invention relates to a sewage suction and dehydration treatment vehicle, belonging to the technical field of sludge dehydration. Background Art

[0002] Tongditch sludge is a mixed solid waste generated in the urban sewage pipeline network. With the continuous improvement of the emission standards for urban pipeline dredging and treatment, the sewage suction and purification vehicles, cleaning sewage suction vehicles, and other pipeline sewage suction vehicles commonly used in ditch sludge dredging construction do not have new treatment functions such as sludge classification and dehydration, miscellaneous sewage classification and recovery, mud deep dehydration, and mud residue resource docking and disposal.

[0003] This makes direct discharge increasingly difficult with the previous extensive treatment methods, which lacked control over dewatering moisture content and sludge classification. Therefore, the simultaneous resource classification and recycling of ditch sludge during pipe network desilting, along with matching resource utilization indicators, has become a necessary technological advancement and innovation in the new environmental emission landscape.

[0004] The extensive mixing treatment of existing sewage treatment vehicles results in a high moisture content in the discharged sludge after treatment. Debris, soft and hard solids of different textures are mixed together for dehydration, resulting in low resource utilization and environmental protection efficiency after sludge dehydration treatment.

[0005] Therefore, for mixed solid waste such as sludge, especially urban pipe network desilting sludge, which is widely dispersed, complex in composition, high in organic matter, and rich in usable substances, a new type of sewage suction and dehydration treatment vehicle with the functions of debris separation, grit recovery, high-pressure sludge dehydration, and low-water content discharge is developed. This will effectively solve the current environmental protection requirements of sludge recovery, sludge dehydration reduction, dehydration and dry discharge with low water content, and disposal in accordance with national standards.

[0006] Summary of the Invention

[0007] The purpose of the present invention is to provide a sewage suction and dehydration treatment vehicle to solve the problem of high moisture content of the sludge discharged after treatment caused by the extensive mixing treatment of existing sewage treatment vehicles, and the dehydration of debris, soft and hard solids of different textures, resulting in low resource utilization rate and environmental protection disposal efficiency after sludge dehydration treatment.

[0008] A sewage suction and dehydration treatment vehicle, comprising a vehicle frame;

[0009] A closed compartment is provided above the chassis of the frame, and a power assembly is provided below. The closed compartment is provided with a PAM dosing system, a dirt screening machine, a mud collection device, a mud conditioning device, a high-pressure diaphragm filter press system and a slag conveyor in sequence;

[0010] The input end of the dirt screening machine is connected to a corrugated conveying pipe, the end of which is provided with a sewage suction pump. The input end of the dirt screening machine is connected to a mud collection device, the top of which is provided with a material discharge pump. The material discharge pump pumps the mud in the mud collection device to the mud conditioning device through a pipeline, thereby realizing diversified collection and transfer of different types of mud. The output end of the PAM dosing system is connected to the pipeline of the material discharge pump, thereby realizing the flow and mixing of mud and reagents in the pipeline.

[0011] The output end of the mud conditioning device is connected to the high-pressure diaphragm filter press system, and the slag discharge conveyor is arranged below the high-pressure diaphragm filter press system for discharging slag.

[0012] Furthermore, a high-pressure flushing device is provided above the tailgate inside the closed compartment, and the high-pressure flushing device is connected to the clean water tank in the PAM dosing system.

[0013] Furthermore, the powertrain includes an engine and a gearbox connected to the engine, the gearbox is connected to a power generation system, the input end of the power generation system is connected to a power cabinet, the power cabinet is connected to a control cabinet, and the control cabinet is used to power electrical components of the entire vehicle.

[0014] Furthermore, the power generation system includes a primary transmission shaft, a bridge transmission bearing, a secondary transmission shaft and an electric bulb generator connected in sequence, one end of the primary transmission shaft is connected to the power end of the gearbox, and the other end is connected to one end of the bridge transmission bearing, the other end of the bridge transmission bearing is connected to one end of the secondary transmission shaft, and the other end of the secondary transmission shaft is connected to the electric bulb generator, and the electric bulb generator is connected to the power cabinet through a main cable.

[0015] Furthermore, the debris screening machine includes a mounting seat, a shock-absorbing spring, an adjustment seat, a feeding device, a vibration motor, a screen body and a slag discharge guide plate; the shock-absorbing spring is arranged on the mounting seat, the adjustment seat is arranged on the shock-absorbing spring, the screen body is connected to the adjustment seat, the vibration motor is arranged on the screen body, the slag discharge guide plate is arranged at the output end of the screen body, the slag discharge guide plate is connected to the mud collection device, and the feeding device is installed above the mounting seat.

[0016] Furthermore, the mud collecting device includes a material collection box, a connecting box and a material dumping box; the material collection box is connected to the dirt screening machine, the connecting box is used to connect the material collection box and the material dumping box, and the material dumping pump is arranged in the material dumping box.

[0017] Furthermore, the mud conditioning device includes a mixing box, a mud-medicine mixer and a mixer fixing frame. The mud-medicine mixer is vertically welded in the mixing box through the mixer fixing frame. The agitator assembly is installed in the mixing box. The agitator is fixed to the mixing box through the agitator mounting seat. The mud-medicine mixer is connected to the PAM drug preparation and supply system.

[0018] Furthermore, the PAM dosing system includes a clean water tank, a PAM pharmaceutical machine, a PAM dosing pump and a water supply three-way ball valve. The clean water tank is used to store clean water, and water is added to the PAM pharmaceutical machine through a water supply pump. A water supply pump mounting bracket is welded to the side wall of the clean water tank, and a water supply pump is installed above the bracket. A water suction three-way valve is installed at the suction port of the water supply pump, and a water supply three-way ball valve is installed at the outlet of the water supply pump. One end of the PAM dosing pump is connected to the PAM pharmaceutical machine, and the other end is connected to the pipe of the material discharge pump.

[0019] Furthermore, the high-pressure diaphragm filter press system includes a squeezing pump, a grouting pump, a feed stop valve, a high-pressure diaphragm filter press, a filtrate recovery box, a filter press feed pipe, a squeezing pump water suction pipe and a grouting pump suction pipe. The grouting pump suction pipe is connected to the mud conditioning device and enters the grouting pump through the grouting pump suction pipe. The outlet of the grouting pump is connected to the feed stop valve. The other end of the feed stop valve is connected to the filter press feed pipe. The other end of the filter press feed pipe is connected to the feed port of the high-pressure diaphragm filter press. When the grouting pump continuously inputs high pressure to the filter press, no filtrate flows out of the filter press drain port. The grouting pump is turned off, the feed stop valve is closed, and the squeezing pump is started. The suction port of the squeezing pump is connected to the filtrate recovery box through the squeezing pump water suction pipe to absorb clean water in the box.

[0020] Furthermore, the high-pressure diaphragm filter press includes a filter press frame, a tightening oil cylinder, a hollow filter plate, a solid filter plate, a filter cloth, a pressing hose, a pressing main pipe, a pressing water injection stop valve and a pressing pipe pressure relief valve. The pressing hose is arranged at the bottom of the filter press frame and is connected to the pressing main pipe. The pressing pipe pressure relief valve is arranged on the pressing main pipe. The hollow filter plates and solid filter plates are both arranged on the filter press bracket, and all filter plates are arranged in sequence as one solid and one hollow. All hollow filter plates and solid filter plates are double-sided concave structures. Filter cloth is installed between the hollow filter plates and the solid filter plates. When the tightening oil cylinder pushes all the filter plates placed on the filter press frame in one direction until all the filter plates are tightly pressed together, the concave structure between the filter plates forms a filter chamber.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention provides a sewage suction and dewatering treatment vehicle, which has the function of self-generating electricity by taking power from the chassis and the function of connecting to the mains. It can independently complete the integrated operation of sewage suction, mixture classification and separation, classification dehydration, mud collection, mud reduction, mud dry discharge, dewatered slag transportation and loading, and high-pressure flushing and cleaning required for pipeline dredging operations. It solves the problems of conventional pipeline dredging vehicles, such as no garbage classification and treatment during the dredging process, incomplete mud and water separation, and failure to meet the mud dry discharge index, as well as the problem of dewatered slag lacking the transportation and slag discharge function. It realizes the mobile construction, mobile operation, desilting mud classification and treatment, slag discharge in line with resource index docking and environmental protection operation requirements of mud treatment without landing.

[0023] The chassis with a cab of the present invention is equipped with a chassis power generation system, which can generate power by relying on the vehicle's own engine to meet the processing and application requirements of urban dredging and mobile construction and mobile operations;

[0024] The closed carriage of the present invention is connected to a chassis with a cab to form a mobile platform. The electricity used by its equipment comes from a chassis power generation system installed under the chassis. The internal equipment of the closed carriage consists of a folding arm crane, a sewage suction pump fixing seat, a sewage suction pump, a mud bellows, a deflection pipe rack, a miscellaneous dirt screening machine, a mud collection device, a mud conditioning device, a PAM dosing system, a high-pressure diaphragm filter press system, a mud discharge conveyor, a high-pressure flushing device, a power cabinet, and a control cabinet, realizing the integrated functions of urban pipeline desilting, sewage suction, classification treatment, classification dehydration, mud dehydration, mud dry discharge, and mud loading. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] FIG1 is a schematic diagram of the layout of the vehicle equipment and the pipeline connections between the equipment according to the present invention;

[0026] FIG2 is a schematic diagram of a single-engine power generation and power distribution layout according to the present invention;

[0027] FIG3 is a schematic diagram of the composition of the PAM dosing system of the present invention;

[0028] 4 is a schematic diagram of the layout of a top view of a PAM dosing system according to the present invention;

[0029] 5 is a schematic diagram of the installation layout of the vehicle-mounted dirt screening machine, the mud collection device, the mud conditioning device, and the feed pump of the present invention;

[0030] FIG6 is a schematic diagram of a mud collection device according to the present invention;

[0031] FIG7 is a schematic structural diagram of the dirt screening machine contained in the present invention;

[0032] FIG8 is a schematic diagram of the composition and assembly of the feeding device of the dirt screening machine of the present invention;

[0033] 9 is a schematic diagram of the installation, positioning and layout of the feed pipe of the dirt screening machine contained in the present invention;

[0034] 10 is a schematic diagram of the assembly between the damping spring, the mounting seat and the adjustment seat of the dirt screening machine of the present invention;

[0035] 11 is a second schematic diagram of the assembly between the damping spring, the mounting seat and the adjustment seat of the dirt screening machine of the present invention;

[0036] 12 is a schematic diagram of the assembly between the vibration motor and the screen body, and between the screen body and the double-layer screen plate of the dirt screening machine of the present invention;

[0037] Figure 13 is a schematic structural diagram of the mud conditioning device of the present invention;

[0038] FIG14 is a schematic diagram showing the composition and layout of the high-pressure diaphragm filter press system carried by the vehicle of the present invention.

[0039] In the figure: 1. Frame; 1-1. Powertrain; 2. PAM dosing system; 2-1. Clean water tank; 2-2. Water suction three-way ball valve; 2-3. Water supply pump; 2-4. Water supply pump mounting bracket; 2-5. PAM pharmaceutical machine; 2-6. PAM dosing pump; 2-7. Water supply three-way ball valve; 2-111. Internal circulation water suction pipe; 2-112. External water suction pipe; 2-113. Medicine tank water supply pipe; 2-114. Water tank water supply pipe; 2-115. Medicine suction pipe; 2-116. Dosing pipe; 3. Miscellaneous dirt screening machine; 4. Enclosed carriage; 5. Mud collection device; 5-1. Aggregate box; 5-2. Connecting box; 5-3. Turning box; 6. Mud conditioning device; 6-1. Mixer mounting bracket; 6-2. Mud and medicine mixer; 6-3. Agitator assembly; 6-4. Agitator mounting base; 6-5. Mixing box; 6-5-1. Flange connecting pipe; 7. Control cabinet; 8. Power supply cabinet; 9. High-pressure diaphragm filter press system; 9-1. Squeezing pump; 9-2. Grouting pump; 9-3. Feed shut-off valve; 9-4, high-pressure diaphragm filter press; 9-4-1, hollow filter plate; 9-4-2, solid filter plate; 9-4-3, tightening cylinder; 9-5, squeeze pipe pressure relief valve; 9-6, filtrate recovery pipe; 9-7, filtrate tank overflow pipe; 9-8, filtrate recovery tank; 9-9, squeeze main pipe; 9-10, squeeze hose; 9-11, squeeze water injection stop valve; 9-12, filter press feed pipe; 9-13, squeeze pump outlet pipe; 9-14, squeeze pump suction pipe; 9-15, grouting pump suction pipe; 9- 16. Drain pipe; 10. Corrugated conveying pipe; 11. Bellows deflection arm; 12. Folding arm crane; 13. Mud conveyor belt; 14. Sewage suction pump; 15. Sludge discharge conveyor; 16. Power generation system; 16-1. Primary transmission shaft; 16-2. Bridge transmission bearing; 16-3. Secondary transmission shaft; 16-4. Electric bulb generator; 16-5. Main cable; 17. Carriage connecting plate; 18. High-pressure flushing device; 19. Sewage suction pump fixing seat; 20. Bellows bracket; 21. Discharge pump. DETAILED DESCRIPTION

[0040] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0041] As shown in Figures 1 to 14, a sewage suction and dehydration treatment vehicle is disclosed, including a vehicle frame;

[0042] A closed compartment 4 is provided above the chassis of the frame, and a power assembly is provided below. The closed compartment is provided with a PAM dosing system 2, a dirt screening machine 3, a mud collection device 5, a mud conditioning device 6, a high-pressure diaphragm filter press system 9 and a slag conveyor 15 in sequence;

[0043] As shown in Figure 1, the input end of the dirt screening machine 3 is connected to a corrugated conveying pipe 10, and the end of the corrugated conveying pipe 10 is provided with a sewage suction pump 14. The input end of the dirt screening machine 3 is connected to the mud collecting device 5, and the top of the mud collecting device 5 is provided with a material discharge pump 21. The material discharge pump 21 pumps the mud in the mud collecting device 5 to the mud conditioning device 6 through a pipeline, thereby realizing diversified collection and transfer of different types of mud; the output end of the PAM dosing system 2 is connected to the pipeline of the material discharge pump 21, thereby realizing the flow mixing of mud and reagents in the pipeline;

[0044] As shown in FIG5 and FIG13, the output end of the mud conditioning device 6 is connected to the high-pressure membrane filter press system 9, and the slag conveyor 15 is provided below the high-pressure membrane filter press system 9 for slag discharge.

[0045] In this embodiment, a powertrain 1-1 is provided below the chassis. The powertrain includes an engine and a gearbox connected to the engine. The gearbox is connected to a power generation system. The power system includes a primary transmission shaft 16-1, a bridge transmission bearing 16-2, a secondary transmission shaft 16-3, and a bulb generator 16-4, which are connected in sequence. The primary transmission shaft 16-1 is connected to the power end of the transmission, and the output speed and torque of the engine are transmitted to the bulb generator through the above-mentioned transmission device, thereby realizing single-engine power generation. The bridge transmission bearing 16-2 and the bulb generator 16-4 are fixedly connected to the chassis. The bulb generator 16-4 connects the generated electricity to the voltage stabilizing and rectifier device 8-1 inside the power cabinet 8 through the main cable 16-5 to achieve voltage stabilization and rectification of the generated power, thereby ensuring the stability of the output power.

[0046] As shown in Figures 1 and 2, the bus output from voltage stabilizing and rectifying device 8-1 divides power according to system application requirements. This power is then distributed and delivered to several secondary power fuses 8-2 via cables, further optimizing power distribution and protection. Secondary power fuses 8-2 are connected via cables to sub-device fuses 7-1 in the equipment control cabinet 7, delivering power to terminal devices. Sub-device fuses 7-1 protect the safety of related equipment and ensure that electrical faults do not affect power supply to other equipment, facilitating troubleshooting and maintenance.

[0047] As shown in Figures 7 to 12, in this embodiment, the debris screening machine 3 includes a mounting seat 3-1, a shock-absorbing spring 3-2, an adjustment seat 3-3, a feeding device 3-4, a vibration motor 3-5, a screen body 3-6, a slag discharge guide plate 3-7, etc.

[0048] The installation sequence is as follows: the mounting seat 3-1 is composed of a seat base 3-1-1, a lower limit connecting plate 3-1-2, and a lower positioning column 3-1-3. The lower positioning column 3-1-1 in the mounting seat 3-1 is assembled with the shock-absorbing spring 3-2.

[0049] Four support shafts are welded to the same horizontal surface on both sides of the screen body 3-6, two on each side, arranged at regular intervals. Adjustment seats 3-3 are mounted on these four support shafts. These seats consist of a triangular block 3-3-1, an upper limit connection plate 3-3-2, and upper positioning posts 3-3-3. Once the adjustment seat 3-3 and the screen body 3-6 are assembled into a single unit, the entire screen body and adjustment seat assembly is vertically inserted onto the spring of the damping spring 3-2, which has already been assembled with the mounting seat 3-1, using the adjustment seat's upper positioning posts 3-3-3 as a locating element. This provides elastic horizontal support for the screen body.

[0050] As shown in FIG12 , the screen body 3-6 is composed of a screen compartment 3-6-1, a coarse screen plate 3-6-2, a fine screen plate 3-6-3, a pressure strip 3-6-4, a wedge block 3-6-5, a pressure plate 3-6-6, and a vibration motor mounting base 3-6-7.

[0051] Screen chamber 3-6-1 is welded with two internal frames. The coarse screen plate 3-6-2 is press-fitted onto the upper frame, and the fine screen plate 3-6-3 is press-fitted onto the lower frame. The coarse screen plate generally has a 5-10mm slit, which can separate larger, irregular solid debris. The fine screen plate generally has a 2-4mm slit, which can recover sand and gravel aggregate that escapes the coarse screen layer. High-frequency vibration is used to dehydrate and discharge the material above the coarse and fine screen plates.

[0052] The pressure strip 3-6-4, wedge block 3-6-5 and pressure plate 3-6-6 are pressed and assembled on the coarse and fine screen plates in sequence. The pressure plate 3-6-6 is fixed to the inner side of the screen body by bolts to lock the wedge block 3-6-5.

[0053] Vibration motor mounting bracket 3-6-7 is installed above screen body 3-6. Based on the inclination angle of vibration motor mounting bracket 3-6-7, vibration motors 3-5 (2 units) are installed perpendicular to the plane of the bracket. When vibration motor 3-5 is activated, it drives the material on the screen for vibration separation and dehydration. The vibration amplitude of the vibration motor and the inclination angle of the bracket vibrate and push the material off the vibrating screen. Slag guide plates are installed at the discharge port of screen compartment 3-6-1. These plates are bolted to the front ends of the upper and lower inner frames of the screen compartment, respectively. They guide and discharge the screened solid debris. After passing through the two layers of screening and filtration, the slurry passes through the bottom fine screen plate and falls into the slurry collection device below the screen body, where it is available for use by the next level of equipment.

[0054] As shown in FIG9 , the feed device 3-4 is a slurry screen device consisting of a feed pipe bracket 3-4-1 and a semi-enclosed guide pipe 3-4-2 with a plug cap. The guide pipe 3-4-2 is welded above the feed pipe bracket 3-4-1.

[0055] It is installed above the mounting seat 3-1 through the feed pipe bracket 3-4-1, and its guide pipe 3-4-2 is positioned behind the vibration motor mounting seat 3-6-7 above the screen body 3-6;

[0056] A long hole is cut in the center of the diversion pipe 3-4-2, and a diversion trough 3-4-2-1 is welded to it. A flange is welded to one end of the pipe for connection to an external pipeline, and the other end is blocked by a flange plug. The diversion trough 3-4-2-1 is inserted into the screen body 3-6, maintaining a certain distance from the coarse screen plate 3-6-2. Slurry transported from the pipe network desilting equipment is evenly distributed through the diversion trough and injected into the coarse screen layer of the screen body.

[0057] As shown in Figures 5 and 6, the mud collecting device 5 consists of three sections: an aggregate box 5-1, a connecting box 5-2, and a tipping box 5-3. The aggregate box 5-1 serves as an installation platform for the debris screening machine 3, is used to install the debris screening machine 3, and receives the mud screened out by the screening machine. The connecting box 5-2 serves as a liquid level observation section in the box, which is used to check the liquid level and solid phase deposition in the box. When deposition occurs, it can be processed in time. Alternatively, when the dredged mud is relatively pure, that is, the mud has no messy debris or the impurities have small particle size and are of uniform size, the mud can be directly injected from the upper opening of the connecting box 5-2 without passing through the debris screening machine, and transferred and stored for use in subsequent processes. The connecting box 5-2 is interconnected with the collecting box 5-1 and the dumping box 5-3. A dumping pump 21 is installed in the dumping box 5-3 to pump the mud in the dumping box 5-3 to the mud conditioning device 6, thereby realizing diversified collection and transfer of different types of mud.

[0058] The mud collection device serves as the process connection hub of the entire vehicle processing process and plays a vital role in mud storage and buffering.

[0059] As shown in Figure 13, the mud conditioning device 6 includes a mixing box 6-5, an agitator assembly 6-3, an agitator mounting base 6-4, a mud and medicine mixer 6-2, and a mixer mounting bracket 6-1. The mud and medicine mixer 6-2 is vertically welded to the mixing box via the mixer mounting bracket 6-1, with one half of the mixer above the outlet and the other half inside the box. An agitator assembly 6-3 is installed in the mixing box 6-5. The agitator 6-3 is fixed to the mixing box 6-5 via the agitator mounting base 6-4. A flange connection pipe 6-5-1 with a flange plate is provided at the bottom side of the mixing box for conveying the conditioned sludge.

[0060] The mud-medicine mixer 6-2 is a pipe with a connecting flange. The side wall of the pipe is opened and welded with a joint for connecting to the PAM dosing pipe 2-116 in the PAM preparation and supply system 2. When the discharge pump 21 in the mud collection box 5 is connected to the mud-medicine mixer 6-2 through the pipe, the mud flows through the mud-medicine mixer 6-2 and mixes with the PAM agent injected into the mixer's dosing port, achieving fluid mixing of the mud and agent within the pipe. The PAM agent is transported by the PAM preparation and supply system 2, which delivers the agent to the dosing port of the mud-medicine mixer 6-2 via the PAM dosing pump 2-5 and the PAM dosing pipe 2-116.

[0061] In order to further improve the combination effect of the agent and the mud, the mud discharged from the mud-medicine mixer enters the mixing box 6-5, and the agitator assembly 6-3 further stirs and mixes the mud in the box to strengthen the pharmacological reaction between the agent and the mud, realize the modification and conditioning of the mud, and improve the flocculation and sedimentation effect during the modification and conditioning process.

[0062] As shown in Figures 3 and 4, the PAM preparation and dosing system 2 includes a clean water tank 2-1, a water suction three-way ball valve 2-2, a water supply pump 2-3, a water supply pump mounting bracket 2-4, a PAM pharmaceutical machine 2-5, a PAM dosing pump 2-6, a water supply three-way ball valve 2-7, and an internal circulation water suction pipe 2-111, an external water suction pipe 2-112, a medicine box water supply pipe 2-113, a water tank water supply pipe 2-114, a medicine suction pipe 2-115, and a dosing pipe 2-116 for interconnecting;

[0063] The clean water tank 2-1 is used to store clean water, and water is added to the PAM pharmaceutical machine 2-5 through the water supply pump 2-3 to ensure the water demand of the PAM pharmaceutical machine 2-5. The main function of the PAM pharmaceutical machine 2-5 is to dissolve PAM powder with water to make PAM medicine for mud conditioning. A water supply pump mounting bracket 2-4 is welded to the side wall of the clean water tank 2-1, and a water supply pump 2-3 is installed above the bracket. A water suction three-way valve 2-2 is installed at the water supply pump suction port. The water suction three-way valve 2-2 is connected to the water circulation water suction pipe 2-111 and the external water suction pipe 2-112 respectively. The water suction three-way valve 2-2 is usually connected to the water suction pipe 2-111 in a long-open state, and is connected to the medicine tank water supply pipe 2-113 through the water outlet of the water supply pump 2-3, to provide water for the PAM pharmaceutical machine on a long-term basis.

[0064] A water supply three-way ball valve 2-7 is installed at the outlet of the water supply pump 2-3, which is connected to the medicine box water supply pipe 2-113 and the water tank water supply pipe 2-114 respectively. Normally, the water supply three-way ball valve 2-7 and the medicine box water supply pipe 2-113 are in a long-pass state to continuously supply water to the PAM pharmaceutical machine.

[0065] When the water level in the clean water tank gradually decreases as the medicine is consumed, the water replenishment pump 2-3 switches the suction port to the external water suction pipe 2-112 through the water suction three-way valve 2-2 to absorb water from the outside to replenish the clean water tank 2-1.

[0066] When the sludge treatment project is large and requires continuous sludge dewatering for several days, the water suction three-way ball valve 2-2 can be adjusted to be normally open with the water suction pipe 2-112, and the water supply three-way ball valve 2-7 can be adjusted to be normally open with the medicine box water supply pipe 2-113 to ensure continuous pharmaceutical water supply to the PAM pharmaceutical system.

[0067] As shown in Figure 14, the high-pressure diaphragm filter press system 9 includes a squeezing pump 9-1, a grouting pump 9-2, a feed stop valve 9-3, a high-pressure diaphragm filter press 9-4, a squeezing pipe pressure relief valve 9-5, a filtrate recovery pipe 9-6, a filtrate box overflow pipe 9-7, a filtrate recovery box 9-8, a squeezing main pipe 9-9, a squeezing hose 9-10, a squeezing water injection stop valve 9-11, a filter press feed pipe 9-12, a squeezing pump outlet pipe 9-13, a squeezing pump suction pipe 9-14, a grouting pump suction pipe 9-15, etc., wherein the high-pressure diaphragm filter press includes a hollow filter plate 9-4-1 and a solid filter plate 9-4-2.

[0068] After being processed and flocculated in the previous steps, the slurry enters grouting pump 9-2 through grouting pump suction pipe 9-15. The outlet of grouting pump 9-2 is connected to feed stop valve 9-3, the other end of which is connected to filter press feed pipe 9-12. The other end of filter press feed pipe 9-12 is connected to the feed port of high-pressure diaphragm filter press 9-4. The slurry is injected into the high-pressure diaphragm filter press through grouting pump 9-2 at a pressure of more than 1 MPa.

[0069] The high-pressure diaphragm filter press 9-4 is mainly composed of a filter press frame 9-4-4, a tightening cylinder 9-4-3, a hollow filter plate 9-4-1, a solid filter plate 9-4-2, a filter cloth, a pressing hose 9-10, a pressing main pipe 9-9, a pressing water injection stop valve 9-11, a pressing pipe pressure relief valve 9-5, etc. The hollow filter plate 9-4-1 and the solid filter plate 9-4-2 are both placed on the filter press frame, and all the filter plates are arranged in sequence as one solid and one hollow. All the filter plates are double-sided concave structures, and filter cloths are installed between the filter plates. When the tightening cylinder pushes all the filter plates placed on the frame in one direction until all the filter plates are tightly pressed together, the concave structure between the filter plates forms a filter chamber. At this time, the slurry is injected into the filter chamber of the filter press by the grouting pump at high pressure. Under the interception and filtration of the filter cloth, the solid phase particles in the slurry are intercepted and accumulated in the filter chamber. The materials with lower filtration accuracy than the filter cloth pass through the filter cloth and are discharged from the filter press through the drainage holes of the filter plate. As the solid phase particles continue to accumulate under the interception of the filter cloth, and because of the high-pressure grouting, the solid phase in the filter chamber not only piles up more and more, but also becomes more and more dense. Therefore, under the dual effects of grouting pressure and filter cloth interception, the slurry completes the first round of mud-water separation and pressure reduction dehydration. When the grouting pump continues to input high pressure to the filter press for a certain period of time, no filtrate flows out of the filter press outlet. At this time, the grouting pump 9-2 is turned off, the feed stop valve 9-3 is closed, and the squeeze pump 9-1 is started. The suction port of the squeeze pump 9-1 is connected to the filtrate recovery tank 9-8 through the squeeze pump suction pipe 9-14 to suck the clean water in the tank. The clean water in the filtrate recovery tank 9-8 comes from the filtrate discharged from the filter press drain pipe 9-16. Due to the high filtration accuracy of the filter cloth, the filtrate is very clear and can be recycled as press water. The outlet of the press pump is connected to the main press pipe 9-9. Several press hoses 9-10 are installed on the side wall of the main press pipe in a straight line at regular intervals. The main press pipe is fixed to the side of the filter press frame. The other end of the press hoses is connected to the hollow filter plates 9-4-1 of the high-pressure diaphragm filter press. The number of press hoses corresponds to the number of hollow filter plates. The press pump 9-1 injects clean water into the hollow filter plates 9-4-1 through the above-mentioned pipeline at a higher pressure than the grouting pump 9-2, causing the hollow filter plates of the filter press to swell and deform. This then performs a secondary hydraulic squeeze on the sludge in the filter chamber that has completed the first round of dehydration. This further compresses and dehydrates the sludge in the filter chamber, ultimately achieving a dry sludge discharge filter press effect. The filtrate generated during the filtration process is connected to the filtrate tank via a filtrate recovery pipe connected to the filter press drain outlet. This filtrate is recovered and used as circulating water for the press pump. Excess filtrate is discharged from the filtrate tank overflow pipe. This equipment allows the sludge to undergo two high-pressure dehydration processes, achieving the environmentally friendly requirements of deep compression dehydration and dry discharge.

[0070] Mud discharge conveyor 15 The mud discharge conveyor is installed between the frames below the filter plates of the filter press and fixed on the floor of the carriage. When the high-pressure diaphragm filter press completes mud dehydration, the filter plates are opened and the dehydrated mud will fall onto the belt conveyor of the mud discharge conveyor and be transported out of the carriage via the belt conveyor.

[0071] The high-pressure flushing device 18 is installed above the floor of the vehicle compartment, near the tailgate. The high-pressure flushing device is connected to the clean water tank in the PAM drug supply system through a pipeline, and can rely on the water supply pump and the clean water tank in the PAM drug supply system to obtain a continuous water source, thereby realizing high-pressure auxiliary flushing of operation pipelines, mud dilution, flushing equipment, flushing operation sites, flushing filter cloths and other flushing application needs during dredging construction.

[0072] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A sewage suction and dehydration treatment vehicle, characterized in that: Including frame; A closed compartment is provided above the chassis of the frame, and a power assembly is provided below. The closed compartment is provided with a PAM dosing system, a dirt screening machine, a mud collection device, a mud conditioning device, a high-pressure diaphragm filter press system and a slag conveyor in sequence; The input end of the dirt screening machine is connected to a corrugated conveying pipe, the end of the corrugated conveying pipe is provided with a sewage suction pump, the input end of the dirt screening machine is connected to a mud collecting device, the top of the mud collecting device is provided with a material dumping pump, the material dumping pump pumps the mud in the mud collecting device to the mud conditioning device through a pipeline, so as to realize the diversified collection and transfer of different types of mud; The output end of the PAM dosing system is connected to the pipeline of the feed pump to achieve the flow mixing of mud and the agent in the pipeline; The output end of the mud conditioning device is connected to the high-pressure membrane filter press system, and the slag discharge conveyor is arranged below the high-pressure membrane filter press system for discharging slag.

2. The sewage suction and dehydration treatment vehicle according to claim 1, characterized in that: A high-pressure flushing device is provided above the tailgate inside the closed compartment, and the high-pressure flushing device is connected to a clean water tank in the PAM dosing system.

3. The sewage suction and dehydration treatment vehicle according to claim 1, characterized in that: The powertrain includes an engine and a gearbox connected to the engine, the gearbox is connected to a power generation system, an input end of the power generation system is connected to a power cabinet, the power cabinet is connected to a control cabinet, and the control cabinet is used to supply power to electrical components of the entire vehicle.

4. The sewage suction and dehydration treatment vehicle according to claim 3, characterized in that: The power generation system includes a primary transmission shaft, a bridge transmission bearing, a secondary transmission shaft and an electric bulb generator which are connected in sequence. One end of the primary transmission shaft is connected to the power end of the gearbox, and the other end is connected to one end of the bridge transmission bearing. The other end of the bridge transmission bearing is connected to one end of the secondary transmission shaft. The other end of the secondary transmission shaft is connected to the electric bulb generator. The electric bulb generator is connected to the power cabinet through a main cable.

5. The sewage suction and dehydration treatment vehicle according to claim 1, characterized in that: The debris screening machine includes a mounting seat, a shock-absorbing spring, an adjustment seat, a feeding device, a vibration motor, a screen body and a slag discharge guide plate; the shock-absorbing spring is arranged on the mounting seat, the adjustment seat is arranged on the shock-absorbing spring, the screen body is connected to the adjustment seat, the vibration motor is arranged on the screen body, the slag discharge guide plate is arranged at the output end of the screen body, the slag discharge guide plate is connected to the mud collecting device, and the feeding device is installed above the mounting seat.

6. The sewage suction and dehydration treatment vehicle according to claim 1, characterized in that: The mud collecting device comprises a material collecting box, a connecting box and a material turning box; the material collecting box is connected to a dirt screening machine, the connecting box is used to connect the material collecting box and the material turning box, and the material turning pump is arranged in the material turning box.

7. The sewage suction and dehydration treatment vehicle according to claim 1, characterized in that: The mud conditioning device includes a mixing box, a mud-medicine mixer and a mixer fixing frame. The mud-medicine mixer is vertically welded in the mixing box through the mixer fixing frame. The agitator assembly is installed in the mixing box. The agitator is fixed to the mixing box through the agitator mounting seat. The mud-medicine mixer is connected to the PAM drug preparation and supply system.

8. The sewage suction and dehydration treatment vehicle according to claim 1, characterized in that: The PAM dosing system includes a clean water tank, a PAM pharmaceutical machine, a PAM dosing pump and a water supply three-way ball valve. The clean water tank is used to store clean water, and water is added to the PAM pharmaceutical machine through a water supply pump. A water supply pump mounting bracket is welded to the side wall of the clean water tank, a water supply pump is installed above the bracket, a water supply pump is installed at the suction port of the water supply pump, and a water supply three-way ball valve is installed at the outlet of the water supply pump. One end of the PAM dosing pump is connected to the PAM pharmaceutical machine, and the other end is connected to the pipeline of the material discharge pump.

9. The sewage suction and dehydration treatment vehicle according to claim 1, characterized in that: The high-pressure diaphragm filter press system includes a squeezing pump, a grouting pump, a feed stop valve, a high-pressure diaphragm filter press, a filtrate recovery box, a filter press feed pipe, a squeezing pump water suction pipe and a grouting pump suction pipe. The grouting pump suction pipe is connected to the mud conditioning device and enters the grouting pump through the grouting pump suction pipe. The outlet of the grouting pump is connected to the feed stop valve, and the other end of the feed stop valve is connected to the filter press feed pipe. The other end of the filter press feed pipe is connected to the feed port of the high-pressure diaphragm filter press. When the grouting pump continuously inputs high pressure to the filter press, no filtrate flows out of the filter press drain port, the grouting pump is turned off, the feed stop valve is closed, and the squeezing pump is started. The suction port of the squeezing pump is connected to the filtrate recovery box through the squeezing pump suction pipe to absorb clean water in the box.

10. The sewage suction and dehydration treatment vehicle according to claim 9, characterized in that: The high-pressure diaphragm filter press comprises a filter press frame, a tightening oil cylinder, a hollow filter plate, a solid filter plate, a filter cloth, a pressing hose, a pressing main pipe, a pressing water injection stop valve and a pressing pipe pressure relief valve. The pressing hose is arranged at the bottom of the filter press frame and is connected to the pressing main pipe. The pressing pipe pressure relief valve is arranged on the pressing main pipe. The hollow filter plates and the solid filter plates are both arranged on the filter press bracket, and all the filter plates are arranged in sequence as one solid and one hollow. All the hollow filter plates and the solid filter plates are double-sided concave structures. Filter cloth is installed between the hollow filter plates and the solid filter plates. When the tightening oil cylinder pushes all the filter plates placed on the filter press frame in one direction until all the filter plates are tightly pressed together, the concave structure between the filter plates forms a filter chamber.

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