1180 results about "Dewatering" patented technology

The invention discloses a foundation pit dewatering treatment method and system, electronic equipment and a storage medium, and relates to the field of foundation pit dewatering treatment. The method comprises the following steps: acquiring various data from sensors mounted at preset positions around a foundation pit and inside the foundation pit, integrating the various data with meteorological data and geological survey data, and establishing a space-time database; according to the data in the space-time database, using a preset LSTM neural network model to predict a first water level change in a future preset time, and according to the three-dimensional seepage field dynamic simulation engine, using a soil parameter inversion algorithm of machine learning to invert soil parameters; according to the first water level change, a variable frequency pump group cooperative control algorithm is used for cooperative control over the pump set, and pump set operation parameters are dynamically adjusted for drainage; and controlling the recharge pressure and the water quality according to the second water level change of the foundation pit after drainage and the soil parameters. According to the technical scheme, efficient and intelligent treatment of foundation pit dewatering is achieved.

The utility model discloses a combined dewatering and drainage system suitable for treating stagnant water on the upper layer of a strip mine side slope. An inclined drainage hole (1), a vertical drainage hole (2) and a drainage ditch (3) are combined to form the combined dewatering and drainage system. Sleeves are arranged in the inclined drainage hole (1) and the vertical drainage hole (2) within the depth of a fissure zone, a hard permeable pipe penetrates through the sleeves and extends into the inclined drainage hole (1) and the vertical drainage hole (2), and a water stop plug is arranged in an annular gap between the hard permeable pipe and the wall of the inclined drainage hole (1) and the wall of the vertical drainage hole (2). And a plurality of water permeable holes are formed in the hard water permeable pipe below the water stop plug in the vertical drainage hole (2) and the hard water permeable pipe within the water stop plug in the inclined drainage hole (1). The water pressure near the water-resisting layer is reduced through the continuous gravity drainage effect, the rainfall cost is reduced, the erosion influence of water flow on slope cracks is avoided, and the overall stability of the strip mine slope is improved.

The utility model provides a cloth pressing assembly and water-containing material dewatering equipment, the cloth pressing assembly comprises a pressing rod which is used for pressing filter cloth and extends along the horizontal direction, and an angle is formed between the length direction of the pressing rod and the laying direction of the filter cloth; the limiting component is at least arranged on the side, facing the laying direction of the filter cloth, of the pressing rod, and the limiting component is attached to the pressing rod. According to the utility model, through the arrangement of the limiting component, when the pressing rod is subjected to the horizontal acting force of the filter cloth, the pressing rod can be propped through the limiting component, particularly, one side, facing the laying direction of the filter cloth, of the pressing rod is propped, so that the pressing rod is prevented from displacing along the horizontal direction, and the pressing effect of the pressing rod on the filter cloth is ensured.

The invention discloses novel intelligent environment-friendly treatment integrated equipment for preparing organic sludge into carbon, and relates to the technical field of organic sludge treatment. The device comprises a treatment cylinder, the interior of the treatment cylinder is fixedly connected with a partition plate, and the interior of the treatment cylinder is divided into two sections including a stirring chamber and a centrifugal chamber by the partition plate; the stirrer is driven by the variable-speed motor to rotate to stir materials in the stirring chamber, so that a flocculating agent is quickly and uniformly dispersed into sludge, the stirrer drives the third synchronizing wheel to rotate while rotating, and the outer sides of the first synchronizing wheel and the third synchronizing wheel as well as the second synchronizing wheel and the fourth synchronizing wheel are in transmission connection through a belt, so that the flocculating agent is quickly and uniformly dispersed into the sludge. Meanwhile, a first rotating rod, a first synchronous wheel, a second synchronous wheel, a rotating pipe and a centrifugal barrel are driven to rotate, sludge falling into the centrifugal barrel is centrifugally dewatered through the centrifugal barrel, untreated sludge can be injected into a stirring chamber in the centrifugal dewatering process, flocculation treatment is conducted, and the dewatering efficiency is further improved.

The invention provides a cloth pressing assembly of dewatering equipment and a control method of the dewatering equipment, the cloth pressing assembly of the dewatering equipment comprises a pressing rod and further comprises a supporting frame, a connecting frame rod is hinged to the supporting frame, the other end of the connecting frame rod is hinged to a connecting rod, the connecting rod is arranged above or below the supporting frame, and the connecting rod can slide in the length direction of the pressing rod along the pressing rod; the driving piece is in sliding connection with the pressing rod through a guide assembly, the extending direction of the guide assembly is parallel to the rotating face of the connecting frame rod, and the guide assembly and the connecting rod are arranged at an angle; the moving path of the driving piece is parallel to the connecting rod, the driving piece drives the connecting frame rod to rotate in the process of driving the pressing rod to slide along the connecting rod, and the connecting rod slides along the pressing rod to drive the pressing rod to slide along the guide assembly. Through the arrangement, one power source can be used for driving the driving piece to move towards the direction close to the filter cylinder, so that the pressing rod is fed towards the direction close to the filter cloth and is pressed downwards, the power source for driving the pressing rod is reduced, the cost of equipment is favorably reduced, and a control system of the cloth pressing assembly is simplified.

The invention relates to the field of waste plastic recycling, and discloses plastic film recycling equipment which is used for cleaning and recycling broken plastic films. Comprising a cleaning pool, an inclined conveying belt is arranged at the tail end of the cleaning pool, water filtering holes are formed in the conveying belt, and an extrusion component is arranged on the conveying belt; and the fished-out fragments are extruded by the extrusion part, so that the drainage speed of the fragments is accelerated, and the subsequent recovery processing step is ensured to be smoothly carried out. A traditional conveying belt drains water only by means of gravity, and water in wet plastic fragments and between layers is difficult to effectively discharge, so that the water yield is large. The intermittent extrusion action is introduced in the operation cycle of the conveying belt, and the'wet cake 'structure formed by the surface tension of a water film of the wet material is destroyed in the squeezing process, so that the moisture is easier to release, the initial moisture content of the material is greatly reduced, the load of subsequent centrifugal dewatering or hot air drying equipment is effectively reduced, and the energy consumption and the operation cost are remarkably reduced.

The invention relates to the technical field of coal bed gas dewatering and drying equipment, and discloses coal bed gas dewatering and drying equipment and method, the coal bed gas dewatering and drying equipment comprises an equipment cylinder, the bottom of the equipment cylinder is fixedly connected with a plurality of supporting legs, and the side wall of the top of the equipment cylinder is fixedly connected with a gas inlet pipe. A positive and negative rotation motor at one end of a connecting plate drives an output rotating shaft to periodically rotate forwards and backwards, when the output rotating shaft rotates clockwise, the output rotating shaft drives condensation blades to rotate clockwise, the condensation blades rotate clockwise to drive cleaning rods to slide along the surfaces of the condensation blades, and at the moment, the cleaning rods rapidly scrape off condensed water drops on the condensation blades; thus, the contact area of the surfaces of the condensing blades and coal bed gas is increased, so that water vapor in the coal bed gas is condensed on the surfaces of the condensing blades, and the working efficiency of the device is improved; on the other hand, the phenomenon that water in the coal bed gas rapidly passing through the spiral cavity cannot make contact with the surfaces of the condensation blades in time, and consequently water removal of the coal bed gas is not thorough is avoided.

The invention belongs to the technical field of foundation treatment construction, and particularly relates to a rapid reinforcement construction method for a deep ultra-soft foundation. Comprising the following steps: step 1, in-situ sludge solidification; 2, leveling and partitioning are carried out; 3, construction of the cutoff wall; 4, well point dewatering; 5, high-pressure jet grouting reinforcement is conducted; 6, a geogrid reinforced broken stone hardcore is laid; and 7, leveling and rolling. According to the method, the three key steps of sludge in-situ solidification, well-point dewatering and high-pressure jet grouting pile construction are combined, the construction period is effectively shortened, the construction cost is reduced, the environmental protection property is good, the bearing capacity of the foundation can be remarkably improved, the stability and safety of a building are ensured, and an innovative solution is provided for reinforcement treatment of the ultra-soft soil foundation.

The rotor-free cyclone dewatering and drying equipment comprises a dewatering and air-drying module and a centrifugal fan, the dewatering and air-drying module comprises a dewatering outer pipe, a central air pipe and an air guide screw rod, the central air pipe is concentrically arranged on the inner side of the dewatering outer pipe, and a dewatering working channel is formed between the inner circumference of the dewatering outer pipe and the outer circumference of the central air pipe; the air guide screw rod is arranged in the central air pipe, air outlet holes are annularly and densely distributed in the periphery of the central air pipe, water filtering holes are annularly and densely distributed in the periphery of the dewatering outer pipe, and high-pressure air in the central air pipe is forced by the air guide screw rod to rotate and then is blown into the dewatering working channel from the air outlet holes; and the particles are driven by rotating high-pressure air to rotate at a high speed towards the particle output port to impact the water filtering holes, so that the dewatering effect is achieved. The particles are not in direct contact with a structure with sharp edges during air drying and dehydration, so that the influence on the surface of a product is reduced, and the generation of powder is reduced due to no high-speed impact.

The invention relates to the technical field of pulverized coal processing, in particular to a low-quality coal high-precision dry-method deashing and upgrading method and process, and the method comprises the following process steps: S1, conveying and pretreatment; s2, vibrating and blowing; s3, primary screening; s4, screening for the second time; s5, dewatering and drying; s6, monitoring, regulating and controlling; and S7, collection and recovery. Comprising a shell and a spiral feeder, two vibration motors are symmetrically installed on the shell, two damping bases are symmetrically installed at the bottom end of the shell, the device further comprises a pretreatment mechanism, and the pretreatment mechanism is arranged on the shell and the spiral feeder. According to the device, coal powder can be preheated and preliminarily crushed and separated, so that preparation is made for the subsequent dewatering and drying process, the coal powder can be promoted to be subjected to secondary crushing and separation in the subsequent flowing and drying process, and unqualified coal powder and dust in the coal powder are separated, discharged and recycled; therefore, the overall quality of pulverized coal drying and deashing is effectively improved.

The invention relates to the technical field of sewage treatment and resource utilization, in particular to a sludge treatment system with an integrated microbial fuel cell and a treatment method of the sludge treatment system. A first cathode plate matched with the sludge compression chamber is arranged at the other end in the sludge compression chamber in a sliding mode, a driving mechanism used for driving the first cathode plate to be close to or away from the first anode plate is arranged on the sludge compression chamber, and a sludge discharge port is formed in the lower portion of the sludge compression chamber. The chlorine salt and the tannic acid are added into the sludge in the pretreatment barrel, the chlorine salt is used for improving the electrochemical wall breaking effect of the sludge, the tannic acid is used for improving the dewatering performance of the sludge and reducing the hydrothermal dewatering temperature, the chlorine salt and the tannic acid are mixed in the pretreatment barrel and then enter the fuel tank for chemical reaction, electric energy is generated, and electric power is provided for the storage battery; the microorganisms can degrade organic matters in the sludge.

The invention relates to the technical field of sludge treatment, in particular to a sludge thickening and dewatering device which comprises a filtering assembly and a dewatering assembly. The dewatering assembly comprises a dewatering mechanism which is communicated with the filtering assembly and is used for preliminarily dewatering the sludge, a sewage collecting mechanism which is communicated with the dewatering mechanism and is used for collecting sewage, and a concentrating mechanism which is communicated with the dewatering mechanism through an anti-blocking pipeline. The sewage and the sludge which are filtered are rapidly and preliminarily separated, a large amount of sewage is rapidly removed, the sludge which is preliminarily dewatered is precipitated and concentrated through the concentration mechanism, the dewatering efficiency is improved through step-by-step dewatering, the anti-blocking pipeline is automatically dredged through the sewage which is separated from the sewage collecting mechanism through the arrangement of the anti-blocking pipeline, and the anti-blocking efficiency is improved. Pollution and waste of water resources are avoided, and time and labor are saved.

The utility model relates to the technical field of foundation pit dewatering, and discloses a foundation pit dewatering device which comprises a water collecting well arranged at the bottom of a foundation pit body. The dewatering mechanism is arranged in the water collecting well and is matched with the filter material layer laid in the water collecting well; the dewatering mechanism is arranged, a first filter cartridge and a second filter cartridge are matched to filter sludge in a water collecting well, the dewatering effect of the device is improved, a mounting block drives a cleaning rod to clean sludge and impurities on the outer wall of the second filter cartridge and the inner wall of the first filter cartridge, water flow can be rapidly discharged, and the dewatering effect of the device is improved. A cleaning plate and a compression spring are matched to clean impurities blocked on the first filter cartridge, a motor drives two gears to be matched to enable a cleaning rod to rotate to clean the filter cartridge, and sludge and impurities blocked on the filter cartridge can be cleaned; the problem that according to an existing foundation pit dewatering device, sludge on a filter cartridge is inconvenient to clean is solved.

The invention relates to the technical field of dredged sediment treatment, and discloses a dredged sediment sludge separation treatment method and system.The method comprises the following steps that S1, pretreatment is conducted, specifically, dredged mud is sequentially subjected to impurity removal and primary precipitation concentration, impurities are removed, and preliminary concentrated mud is obtained; s2, pollutant extraction and sludge separation; s3, carrying out multi-phase separation and pollutant enrichment; step S4, mud phase treatment; and step S5, residual water treatment. According to the dredged bottom mud sludge separation treatment method and system, pollutants in dredged mud are separated out by introducing a solid-phase extraction adsorption material and / or a liquid-phase extraction agent, and the pollutants are separated out through a sludge separation enhanced mass transfer unit integrating stirring, micro-nano bubble generation and pH regulation functions in the treatment process. The extraction-separation efficiency is remarkably enhanced by utilizing the synergistic effect of physical disturbance, interfacial effect and chemical conditions, and the core problems of mixed treatment of sludge, incomplete removal of pollutants and low recycling level in the traditional process are effectively solved.

The gravel geology pit-in-pit dewatering construction method comprises the following steps that a foundation pit dewatering tube well is excavated and arranged on the side edge of a large foundation pit, and the water level is lowered to the preset elevation; a local ultra-deep position dewatering well with the preset depth is excavated and arranged on the side edge of the pit in the pit, and a dewatering well protection cage formed by binding a reinforcing steel bar structure in a well pipe shape and densely covering a steel wire net is arranged; a submersible pump is put into the precipitation well protection cage, and the submersible pump is started for pit-in-pit precipitation; keeping rainfall, and carrying out formwork construction of a concrete cushion layer in the pit; and after the concrete cushion layer of the pit-in-pit reaches the strength, form removal is conducted, the submersible pump is taken out, the dewatering well at the local ultra-deep position is backfilled, and cushion layer construction of the large foundation pit is conducted. According to the construction method, formwork erecting construction of the concrete cushion layer in the pit is firstly carried out, then the dewatering well at the local ultra-deep position is backfilled, and then cushion layer construction of the large foundation pit is carried out, so that the integrity is guaranteed; by means of the dewatering well protection cage, the dewatering effect is guaranteed, cost is reduced, the dewatering well protection cage is denser after backfilling, and the structural strength is improved.

The invention relates to a precipitation structure of a caisson in a foundation pit and a construction method.The precipitation structure comprises a box body, the side wall of the box body is fixedly connected with a plurality of side anchor hooks which are evenly distributed at equal intervals, and the side wall of the bottom of the box body is fixedly connected with a plurality of bottom anchor hooks which are evenly distributed at equal intervals; cross-shaped reinforcing ribs are fixedly connected to the inner walls of the periphery of the box body, a deformation early warning device is arranged in the middle of the box body, according to the structure, the welded box body sinks into a foundation pit, then concrete pouring is carried out, water in the foundation pit is rapidly discharged, the links of digging a precipitation well, burying a water pump, manually nursing precipitation and the like are omitted, the construction period is shortened, and the construction efficiency is improved. The construction efficiency is effectively improved, the deformation early warning device is additionally arranged in the box body for internal supporting, deformation of the box body under concrete pressure is effectively prevented, in addition, the deformation amount of the box body is monitored through induction of the metal detector to the metal sheet, early warning can be conducted on deformation of the box body, and the situation that the construction progress is affected due to excessive deformation of the box body can be effectively prevented.

The invention relates to the technical field of subway double-side extension construction, in particular to a construction method for controlling upheaval based on dewatering of foundation pits on two sides of a subway, which comprises the following steps of: performing finite element simulation on an excavation scheme, determining the upheaval quantity of the subway, and simultaneously pumping and draining confined aquifers on two sides of the subway in response to the upheaval quantity exceeding a standard. According to the difference between the pumping and drainage speed of each of the two sides of the subway in the current period and the target pumping and drainage speed, a stacking strategy above the two sides of the subway in the next period is determined, so that differential upheaval caused by pumping and drainage speed fluctuation is balanced; the water head heights of the first confined aquifer and the second confined aquifer in the confined observation well are constant through pumping drainage or recharging in the water level control well around the station and the tunnel; the subway heap and differential deformation phenomena occurring in the subway double-side extension construction process in the prior art are effectively relieved through the mode of adaptively combining underground water pumping and filling and stacking loading on the time sequence level.

A smart dewatering and water stopping method for a foundation pit, the method comprising the following steps: step S1, dewatering: arranging a plurality of dewatering wells, arranging dewatering water pumps, and lowering a water level in each dewatering well to a preset position by means of each dewatering water pump; step S2, drainage: arranging water collection systems, and draining water from inside a foundation pit by means of the water collection systems; step 3, water blocking: arranging an underground water blocking barrier to prevent underground water outside the foundation pit from flowing into the foundation pit; step S4, water cut-off: arranging a water blocking wall to block water-layer interflow between the interior of the foundation pit and the exterior of the foundation pit; and step S5, performing well water level monitoring, and starting an emergency measure: when a water level exceeds a preset safety range or a stability index of the foundation pit is reduced, starting an automatic emergency measure system. In the present application, for underground water control, the automatic emergency measure system is used to achieve the aims of smart dewatering and water stopping of the foundation pit.

The invention discloses an anti-clogging rapid laying construction method for municipal drainage pipelines in a pluvial area, and relates to the technical field of municipal engineering. According to the method, through construction early-stage investigation and pretreatment, a high-pressure jet grouting pile and a steel sheet pile are combined to form a water interception curtain and vacuum well point dewatering is adopted, and a pipeline with a nanometer hydrophobic coating and a flow guide protruding edge is prefabricated; during rapid excavation, rapid hardening concrete is used for supporting, and a prefabricated module foundation with a permeable blind pipe is laid; laser positioning is adopted for hoisting, and double sealing is adopted for interfaces; graded gravel and a curing agent are used for backfilling, and ground penetrating radar is matched for detection; acceptance inspection is combined with a closed water test and an endoscope, and an intelligent monitoring device is installed to be connected into an intelligent system. The problems that construction efficiency is low and pipelines are prone to clogging in rainy areas are solved, the construction period is shortened by 30% or above, the initial clogging rate is reduced by 60%, and the method is suitable for drainage projects in areas with the annual precipitation being 800 mm or above.

The utility model discloses a skid-mounted integrated device for closed, rapid and deep dehydration of oilfield produced liquid. The skid-mounted integrated device comprises an oilfield produced liquid rapid separation device and an oilfield produced liquid rapid demulsification and dehydration device which are connected with each other, the rapid separation device for the oilfield produced liquid comprises a tank body A, wherein a buffer plate, a metal coalescence filler, a first dehydration element A, a dehydration element B, an oil storage chamber and a water storage chamber are sequentially arranged in the tank body A; the rapid demulsification and dehydration device for the oilfield produced liquid comprises a tank body B, wherein an oil inlet distributor, a dehydration element C, an overflow plate and a second dehydration element A are arranged in the tank body B; the oil inlet distributor, the dehydration element C, the overflow plate and the second dehydration element A are connected in sequence; the oil well produced liquid is subjected to coalescence, separation, demulsification and dehydration, and it is guaranteed that the water content of dehydrated crude oil meets the water content index requirement that the crude oil enters a refinery company for 0.5%.

The utility model discloses a refined cotton extruding and dehydrating device which comprises a base, a control case, a dehydrating and extruding seat and an extruding seat, a control case and a dehydration extrusion seat are mounted on the base; the base is provided with a water draining and discharging assembly for isolating, filtering, draining and discharging extruded raw materials; a driving assembly for driving the extrusion seat to move downwards to extrude and rotate is arranged on the dehydration extrusion seat; according to the device, the driving assembly is arranged to drive the extrusion base to move downwards to extrude and dewater refined cotton materials, the drainage and discharging assembly isolates the refined cotton materials and discharges extrusion moisture during extrusion and dewatering, and after extrusion and dewatering are completed, the extrusion base is driven to move downwards to conduct extrusion and dewatering on the refined cotton materials. The exhaust assembly cleans residual moisture contacted with the extruded refined cotton material, prevents the refined cotton material from reabsorbing moisture, and improves the dehydration effect.

The device comprises a bottom box, an upper treatment box is fixed to one side of the top end of the bottom box, and a belt conveying module used for conveying the vegetable leftovers is installed on the outer wall of one side of the upper treatment box; a waste cutting module used for cutting vegetables and forming rotten vegetables is arranged at the top end of the bottom box on one side of the belt conveying module, and the cut rotten vegetables are conveyed into the upper treatment box through the belt conveying module. A belt conveying module, a waste cutting module, an upper treatment box, a belt wheel driving unit, a gear opposite type vegetable crushing module, a gear opposite type liquid squeezing module, a worm and gear reversing transmission structure and a residue-liquid separation module are integrated; workers can complete the links of waste cutting treatment, crushing and pulping, squeezing and dewatering and residue-liquid separation of the residual vegetables on the same device.

The invention relates to a large-strain consolidation algorithm, equipment and medium for horizontal vacuum dehydration of sludge, and the algorithm comprises the following steps: 1, obtaining basic parameters of a constitutive relation of a target soil body through an indoor consolidation experiment and a penetration experiment, 2, obtaining load conditions of the target soil body through surveying a geological exploration report and an engineering design scheme, the method comprises the steps of (1) establishing a one-dimensional PHD consolidation model, (2) establishing a one-dimensional PHD consolidation model and deducing a control equation under equal strain conditions, (3) introducing a virtual time step and calculating the consolidation degree in a manner of carrying out segmented increment processing on time, (4) establishing the one-dimensional PHD consolidation model and deducing a control equation under equal strain conditions, and (5) calculating the final consolidation degree based on the virtual time step and the control equation, and further comprises equipment and a medium. According to the method, the influence of non-uniform consolidation is incorporated into the one-dimensional theoretical consolidation analysis of the Taisha foundation, and the consolidation coefficient is corrected by using the control equation based on the virtual time step and the strain condition, so that convenient and accurate consolidation calculation is realized.

A material processing device with soaking and squeezing functions comprises a box body, a containing cavity capable of containing water is formed in the side face and the bottom face, the top face is movably connected with an upper cover support with a downward pressing device, and the downward pressing device comprises a downward pressing plate capable of movably pressing downwards towards the interior of the box body; a discharge port is formed in the side surface of the box body and is connected with a discharge side door capable of opening and closing the discharge port, and the discharge side door is in sealing fit when being closed; a filtering pore plate is erected in a position, close to the bottom, in the box body and is positioned above the bottom surface, and an air-blowing rolling device capable of rolling materials in the box body is arranged below the filtering pore plate; a water inlet is formed in the side face of the box body, and a water outlet is formed in the bottom face of the box body. The whole set of operation of dry material soaking, gravel filtering, squeezing and dewatering and easy discharging can be achieved in one device, efficiency is improved, and cost is saved.

An efficient multiphase-flow graded-separation, concentration, and purification system for argillaceous sandstone uranium ore includes a hydraulic tossing washing and scattering pretreatment device, a high-frequency linear vibration grading device, a first-stage multiphase-flow swirling grading device, an energy-gathering ultrasonic scrubbing device, a second-stage multiphase-flow swirling grading device, a high-frequency linear vibration dewatering device, an efficient uniform-mixing and activating system and a conditioning and pressing dewatering system. The present disclosure implements intensive mud-sand stripping of crushed argillaceous sandstone uranium ore, fine graded-separation of material, and efficient uniform-mixing and activating and deep efficient dewatering of fine-particle argillaceous material. Finally, four types of core material of coarse sand material, fine sand material, dry tailings residue and a high-concentration uranium ore leaching solution are formed through continuous work. Efficient multiphase-flow graded-separation, concentration and purification of the argillaceous sandstone uranium ore are implemented, and an intensive extraction rate of uranium ore resources is improved.

The invention relates to the technical field of foundation pit dewatering, in particular to an intelligent control method and system for foundation pit dewatering, and the method comprises the steps: carrying out the historical data collection of an area where foundation pit excavation and dewatering are planned, and finding an underground water level rule and an underground water flowing direction rule of the area under various air temperature and dewatering conditions through the historical data. After the rule is obtained, the flow direction and the water level of the underground water can be predicted by using the meteorological data at the future time point, and then the position of the precipitation well is arranged by using the flow mode of the underground water, so that the position of the precipitation well is more reasonable. Besides, the water level in the dewatering well is controlled through the water pump, during control, the underground water level rule is used for predicting the underground water change amount in the future time, the change amount is used for adjusting a water pump control signal in advance, and therefore the method has the good external interference resisting capacity.

The invention relates to the technical field of foundation pit dewatering, in particular to a foundation pit dewatering dynamic optimization method and system based on intelligent regulation and control. The method comprises the following steps: performing dynamic filtering processing on real-time water level data to obtain a water level prediction deviation; dynamically correcting the permeability coefficient through pore water pressure to obtain dynamic geological parameters; combining the water level prediction deviation, the dynamic geological parameters and rainfall infiltration replenishment to obtain rainfall demand characteristics; calculating a safety efficiency tradeoff coefficient according to the rainfall efficiency and the risk coefficient; and based on the rainfall demand characteristics and the safety efficiency tradeoff coefficient, using an improved particle swarm optimization algorithm to solve a dynamic rainfall scheme. Through multi-source data dynamic feature extraction, scene adaptive weight optimization and multi-dimensional risk coupling evaluation, high-precision control of the water level is realized, the safety risk and energy consumption are reduced, multiple scenes such as soft soil and sandy soil are adapted, and an effective scheme is provided for intelligent regulation and control of foundation pit dewatering.

The present invention discloses a mop cleaning device, including a bucket body, where a squeezing chamber and a water storage chamber for cleaning or dewatering of a mop are disposed in the bucket body, a squeezing mechanism is disposed on the bucket body, a water supply mechanism is disposed in the water storage chamber, the water supply mechanism is communicated to the squeezing mechanism, the water supply mechanism includes a water pump disposed in the water storage chamber, a retractor disposed on the squeezing mechanism, and a sliding assembly disposed along an inner side wall of the squeezing chamber in an up-and-down movement manner, the sliding assembly is connected to the retractor, and the retractor is connected to the water pump through a transmission assembly.

The utility model discloses a dewatering box for papermaking, which relates to the technical field of paper pulp dewaterer and comprises a dewaterer consisting of a concave case, a feed hopper and a material blocking device, the feed hopper is fixed at the top of one end of the concave case, the material blocking device is mounted at the other end of the concave case, a dewatering component is arranged on the inner side of the concave case, and the dewatering component is arranged on the inner side of the concave case. The dewatering assembly is used for conveying and dewatering paper pulp; the dewatering assembly comprises a dewatering box, a driving motor, a variable-diameter spiral feeding piece and an inclined flow guide piece. According to the utility model, the inclined flow deflectors are arranged, and water flow discharged from the screen holes above the central axis of the variable-diameter spiral feeding sheet flows downwards along the inclined surfaces of the inclined flow deflectors, so that the phenomenon that the water flow flowing out from the upper screen holes flows into the lower screen holes to cause the paper pulp to absorb water again can be avoided; the paper pulp dehydration efficiency and the dehydration effect are further improved.

The invention discloses a large-span basement multi-stage water guide and drainage structure and a construction method, and belongs to the technical field of building construction. The drainage guide pipes are hung below a main beam of a basement structure, and every two adjacent drainage guide pipes are connected through a three-way pipe. The two sides of the three-way pipe are in sealed connection with the drainage guide pipes on the two sides through fixing glue respectively, and the other side of the three-way pipe is vertically arranged upwards. The drainage branch pipe is hung below a secondary beam of the basement structure; the water inlet end of the drainage branch pipe is arranged in the dewatering well and connected with a water pump in the dewatering well, and accumulated water in the dewatering well is sucked through the water pump; the water outlet end of the drainage branch pipe is communicated with the three-way pipe between the drainage guide pipes; the water outlet end of the drainage guide pipe closest to the water-collecting well is communicated with the water-collecting well; the water collecting well is sequentially communicated with a peripheral drainage ditch and a municipal pipeline through a pipeline to drain accumulated water. The water guide and drainage system is optimized, and compared with traditional ground pipeline pulling and arranging, the problem that ground pipelines are arranged disorderly is solved, and convenience is provided for construction.