1280 results about "Water pumping" patented technology

The invention discloses an integrated intelligent management and control method and system for underground water pumping and injection based on the Internet of Things, and the method comprises the steps: carrying out the geological investigation of a target region, constructing a three-dimensional geological model, and planning the layout of a pumping and injection well group and a sensor network according to the three-dimensional geological model; deploying a monitoring network and collecting data based on the layout scheme, and fusing a three-dimensional geologic model to construct a polluted site digital twinborn body; groundwater situation data are extracted through the digital twinborn body, a pollutant migration path and a water level dynamic state are predicted by using an LSTM model, and pollution scene simulation information corrected by geologic features is output; by taking the simulation information as input and coupling geological parameters as constraints, generating a pumping and injection well group cooperative control strategy set by adopting a BLMFO double-layer multi-objective optimization algorithm; and finally, a control instruction is executed, the real-time situation is monitored in the repairing process, strategy change suggestions including the flow adjustment amplitude, the agent optimization scheme and equipment operation parameter correction are judged and pushed, the repairing efficiency is improved, and the method adapts to the complex geological environment.

The invention belongs to the technical field of mine engineering, and particularly discloses a dynamic simulation method for water inflow attenuation in the construction process of a water cut-off curtain of a strip mine. The method comprises the following steps: acquiring meteorological data according to the position of a strip mine, acquiring a hydrogeological structure in combination with drilling data, acquiring hydrogeological parameters by using a water pumping test, and acquiring a source convergence item according to water pumping and drainage; the method comprises the following steps: constructing a hydrogeological model by adopting MODFLOW-USG, constructing a mine pit drainage mathematical model and a mine pit drainage model, setting source sink items and boundary conditions, and realizing dynamic simulation based on python; a PEST calibration model is adopted, parameters are subjected to standardization processing, a random forest substitution model is constructed, SHAP values of all the parameters are analyzed and calculated and normalized to obtain global importance indexes, and the model is optimized; and evaluating the optimized model by adopting NSE, KGE and RMSEs. The method has the advantages of being high in model precision, clear in parameter physical significance and capable of being corrected with measured data in real time.

The invention relates to the technical field of foundation pit engineering construction, in particular to a foundation pit drainage optimization method and system based on water level monitoring. Comprising the steps that precipitation partitions are divided according to geological conditions and a construction scheme, and precipitation wells and observation wells are arranged; determining differentiated target water level drop depth according to the excavation depth and the support state; establishing an inter-partition hydraulic coupling model through a pulse water pumping test, and determining coupling kernel function parameters; predicting the future water level change through convolution operation based on the coupling kernel function and the historical water yield; calculating an optimal water yield sequence by adopting a rolling time domain optimization method, and taking the minimum accumulated water yield as a target and meeting the target water level drop as a constraint; controlling the operation power of the water pump and implementing cooperative compensation; coupling kernel function parameters are periodically updated to adapt to system changes. The rainfall control precision is improved, the energy consumption is reduced, and the construction safety is guaranteed.

The invention relates to the technical field of underwater monitoring equipment, in particular to an underwater sensor data acquisition device with a self-cleaning function and a method thereof.The underwater sensor data acquisition device comprises a storage plate used for installing a plurality of sensors, a cleaning box arranged on the storage plate in a sleeving mode and a water storage tank used for supplementing water to the inner space of the cleaning box; storage barrels are arranged on a center shaft of the top face of the storage plate at intervals, the bottom faces of the storage barrels are sleeved with a plurality of sensors, a lifting barrel arranged on the storage barrels in a sleeving mode is fixedly arranged on a center shaft of the top of the cleaning box, and a water suction pump is installed on the outer wall of the lifting barrel. By means of a sleeving structure of the lifting cylinder and the storage cylinder and a water suction pump, clear water is sucked into the lifting channel and pumped into the lifting channel, the storage cylinder and the storage plate are driven to ascend and descend, and when underwater monitoring needs to be carried out, a sensor can be lowered to the outside of the cleaning box; and when the monitoring period reaches the requirement for cleaning, the sensor can be lifted into the cleaning box for cleaning, so that good conditions are provided for working and cleaning of the sensor.

The invention belongs to the technical field of geothermal energy development and utilization, and particularly relates to efficient extraction equipment for a deep geothermal exploitation well, which comprises a plurality of water pumping devices, the plurality of water pumping devices are sequentially communicated in series through a plurality of extension pipe fittings, and the water pumping device close to a wellhead is fixedly connected with a steel wire rope on hoisting equipment; the water pumping device comprises a water pumping mechanism, a well cementation assembly and a guide mechanism, the outer wall of the water pumping mechanism is sleeved with the well cementation assembly, the well cementation assembly is used for making friction contact with the well wall so as to keep the working position of the water pumping mechanism in a well, and the guide mechanism is arranged at the bottom end of the water pumping mechanism and used for guiding the water pumping mechanism to work. And the guide mechanism is used for smoothly lowering the water pumping mechanism into the well and keeping the water pumping mechanism coaxial with the well body. It is guaranteed that the water pumping mechanism is stably fixed in a well, smoothly lowered to the bottom of the well and always coaxially positioned with the well body, and the stability of extraction operation is improved.

The invention relates to a water surface floating type flying water pump system for large-flow long-time operation, and belongs to the technical field of special operation unmanned aerial vehicles and fluid conveying. The system integrates a multi-rotor flying platform, a buoyancy stabilizing device, a large-flow water pump module, a high-strength flexible water conveying pipeline and an intelligent control system. The core of the system is that the system can land on an open water surface, stable floating is achieved through the buoyancy stabilizing device, and a water inlet of the water pump module is submerged into water to directly pump water. By means of the floating water taking mode, the flying platform does not need to hover during operation, energy consumption is greatly reduced, ultra-long operation time is achieved, the limitation of the liquid carrying amount of the unmanned aerial vehicle is broken through, and continuous high-flow water pumping can be conducted through a high-power water pump. The system supports independent operation of a single device or networking collaborative operation of multiple devices, dynamically distributes water supply tasks, can be used as an aerial extension arm of a ground fire fighting truck, and is mainly applied to emergency rescue scenes such as high-rise building fire fighting and forest fire fighting.

The invention relates to an operation method of a water pumping and compressed air energy storage system, which comprises the following steps: after the water pumping and compressed air energy storage system is constructed, gas is filled into an upper water-gas co-containing cabin; in the energy storage process, the water pump and the compressor unit are controlled to work at the same time so as to pump water in the lower water-air co-containing cabin into the upper water-air co-containing cabin, and meanwhile, the compressor unit is controlled to press air into the lower water-air co-containing cabin; and in the energy releasing process, the water turbine and the expansion unit are controlled to work at the same time, so that water in the upper water-gas co-containing cabin flows into the lower water-gas co-containing cabin through the water turbine, and meanwhile air in the lower water-gas co-containing cabin generates power through the expansion unit. Therefore, the problems that the pumped storage unit and the compressed air energy storage unit are different in response speed, energy conversion path, operation constraint and the like, an existing scheduling method is difficult to achieve efficient cooperation of the pumped storage unit and the compressed air energy storage unit, the overall operation efficiency of the system is not high, and the advantages of hybrid energy storage are difficult to play are solved.

The landslide dammed lake landform utilization and restoration method comprises the steps that backfill back pressure is conducted on a slope toe river channel at the front edge of a landslide, reinforced concrete retaining walls are arranged at the upstream end and the downstream end of a backfill back pressure area respectively to stabilize backfill bodies of the backfill back pressure area, and water from the upstream of the river channel is intercepted to form a water storage area; reinforced concrete flood discharge and sand discharge holes are linearly distributed in stable mountain bed rock outside the landslide area, the inlet ends of the flood discharge and sand discharge holes are connected with an upstream water storage area river bank, the outlet ends of the flood discharge and sand discharge holes are connected with a downstream river bank slope, and a water pump station and a pipeline are built in a geological stable area of the water storage area to lift water. The land in the landslide area is recycled; by arranging the backfill back pressure area and the flood discharge and sand discharge hole, on the basis of stabilizing the landslide weir body, the water pumping station and the water lifting pipeline are built, water stored in the water storage area is utilized to irrigate and recycle land in the landslide area, land utilization and ecological restoration are carried out on the basis of landslide prevention and control, and the landslide treatment effect is improved.

The invention relates to the technical field of underground water recharging, and particularly discloses a deep foundation pit underground water pumping and recharging balanced vacuum pressure type recharging device which comprises a basic hardware system, a sealing isolation system, a dynamic regulation and control system and a monitoring feedback system. The sealing isolation system comprises a vacuum well lid; according to the pipeline sealing assembly, a hydraulic drive sealing ring is arranged at the joint of a dewatering well water outlet pipe and a recharge well water inlet pipe, the sealing ring automatically expands to fill gaps during water injection, and air permeation is thoroughly isolated; through triple air isolation formed by water pumping pipe head immersion, vacuum well lid sealing and hydraulic sealing rings, contact between underground water and air is reduced to the maximum extent, oxidation reaction is reduced from the source, and the precipitation amount of iron and manganese oxides is reduced by 60% or above; meanwhile, bubbles and sediments can be effectively removed, more than 90% of bubbles and sediments can be actively removed through a periodic back raising and silt pumping mechanism, the anti-blocking performance of the recharge well is remarkably improved, and therefore the service life of the recharge well is prolonged.

The invention relates to the technical field of gas purification, and discloses an organic waste gas filtering and purifying device which comprises a tank body, a smoke inlet is formed in the bottom of the tank body, a water cabin is arranged on the outer wall of the tank body, a water pumping pipe is fixedly connected to the top of the water cabin, and a water pump is arranged on the circumferential surface of the water pumping pipe. A water adjusting mechanism is arranged in the tank body, the main shaft is rotatably connected to the interior of the tank body, a smoke outlet is formed in the outer wall of the tank body, the feeding pipe is fixedly connected to the inner wall of the feeding bin, and the small filter plate is fixedly connected to the inner wall of the bottom of the feeding bin. The rotating cabin rotates to drive the water spraying pipe to rotate, and the water spraying pipe rotates to increase the spraying area of sprayed water, so that a better purification effect is achieved.

The building foundation pit water pumping equipment comprises a water pumping barrel, a filter barrel, an elastic assembly and a driving barrel, a water pumping pipe is arranged at the top of the water pumping barrel, an opening in the bottom of the water pumping barrel is connected with the filter barrel through the elastic assembly, the filter barrel is attached to the inner wall of the water pumping barrel and can slide up and down in the axial direction, and filter holes are formed in the filter barrel; the elastic assembly is used for driving the upwards-moved filter cartridge to reset; a water outlet communicated with the interior of the water pumping barrel is formed in the top of the driving barrel, a plurality of conveying pipes are arranged at the bottom of the driving barrel, a plurality of water inlet pipes corresponding to the conveying pipes are arranged on the side wall of the water pumping barrel, and filter covers are arranged at the ends, located on the outer wall of the water pumping barrel, of the water inlet pipes; the on-off assembly is connected to the filter cylinder and used for being triggered by upward movement of the filter cylinder and enabling the conveying pipe to be communicated with the water inlet pipe. Through the arrangement of the water pumping cylinder, the filter cylinder, the elastic assembly and the driving cylinder, filtering switching between the filter cylinder and the water inlet pipe is achieved, and the impurity self-cleaning capacity of equipment is improved.

The utility model relates to the technical field of water treatment and discloses a water treatment online sampling device which comprises a rack, a sampling pump is fixedly mounted on the inner wall of the bottom of the rack, a sampling pipe is mounted at the water pumping end of the sampling pump, a connecting flange is fixedly connected to the end, away from the sampling pump, of the sampling pipe, and a filter is arranged at the end, close to the connecting flange, of the sampling pipe. The controller is connected with the sampling pump, the water conveying end of the sampling pump is provided with a conveying pipe, the conveying pipe is provided with a flow adjusting assembly, and the flow adjusting assembly comprises a flow adjusting valve and a flow sensor. According to the invention, the accuracy and stability of sampling each time can be ensured, strict control on the water sample amount and flow velocity under different detection requirements is met, the sampling quality is improved, and the real-time water quality condition in the water treatment process is better reflected.

The invention discloses a water pump device for highway pile foundation construction, and relates to the field of water pumps, the water pump device comprises a water pump main body, a water inlet pipe and a drainage pipe are mounted on the water pump main body, a positioning bracket is arranged on one side of the water pump main body, the water inlet pipe is mounted on the positioning bracket, and a filter head is connected to the water inlet pipe. It needs to be explained that when the water pump pumps water, along with descending of the water surface, the liquid level sensing floating plate gradually descends, the purpose of automatically tracking the water level is achieved, the optimal water suction height is kept, meanwhile, after the lifting floating rod moves downwards in place, water in the auxiliary water tank enters the transfer box, idling of the water pump can be avoided, and the water suction efficiency is improved. Meanwhile, sufficient time can be provided for workers to turn off the water pump in time; in addition, the pumped water is filtered by the filter head and impacts a plurality of impact fan blades to rotate so as to drive the filter head to swing and shake the water surface, and the problem that impurities are gathered at the filter head to cause blockage of the filter head during static water pumping is avoided.

The utility model discloses a sewage sampling device for ecological environment detection. The sewage sampling device comprises a collecting cylinder, a water inlet assembly and a water pumping assembly, the collecting cylinder has a water collecting cavity; the water inlet assembly comprises a water inlet pipe and a one-way valve. The water pumping assembly comprises a piston, a pull rod and a handle. The pull rod is provided with an air channel communicated with the water collecting cavity, a sealing piece and a spring are arranged in the air channel, the sealing piece is used for adjusting the air channel to be communicated and closed, and a push rod is arranged on one side of the sealing piece. According to the sewage sampling device for ecological environment detection disclosed by the utility model, a collecting person can throw the water inlet pipe into water far away from a dangerous area of a water bank zone, and then the water pumping assembly repeatedly pumps water until the water is pumped into the water collecting cavity, so that the situation that the collecting person falls into silt on the bank side is effectively avoided, and meanwhile, the difficulty of sampling operation is reduced.

A calculation method of karst underground reservoir capacity curve based on hydrogeological parameters, including the following steps: hydrogeological exploration, determination of karst underground water reservoirs scope, determination of water storage space, determination of relevant hydrogeological parameters based on hydrogeological tests, and underground reservoir capacity analysis. The invention uses the unit water permeability and the borehole line karst rate that are very easily obtained through the borehole pressure (injection) water test and combines it with a small amount of water pumping test, thereby obtaining a correlation function relationship through regression analysis between the specific yield and the karst rate that are difficult to obtain and the unit water permeability or the permeability coefficient; the underground storage capacity at the corresponding elevation is calculated according to the specific yield or the karst rate and the underground storage capacity curve is obtained, which can improve accuracy and reduce errors.

Provided herein are systems and methods for energy capture, energy storage, and stored energy translation to mechanical work, having: a piston drive pump cylinder tube for housing a first volume of liquid, and a piston drive pump; wherein the piston drive pump is configured for motion; an energy storage tank for storage of a first volume of air and a second volume of liquid wherein the first volume of air is compressed air; a recovery tank for housing a second volume of air and a third volume of liquid; a liquid driven turbine connected to the energy storage tank and in communication with the second volume of liquid of the energy storage tank; a plurality of unidirectional liquid tubes and air tubes for connecting the piston drive cylinder tube, the energy storage tank, and the recovery tank; an impeller associated with the turbine; and a subsystem for energy generation.

The present application relates to the technical fields of deep-sea mining, and particularly relates to a closed deep-sea mineral lifting system, which comprises a sea platform, the sea platform having a first mineral-water separation device and a high-pressure water pump in communication with each other; a circulating pipeline, one end of the circulating pipeline being in communication with the high-pressure water pump, and the other end of the circulating pipeline being in communication with the first mineral-water separation device; a water inlet assembly, the water inlet assembly being in communication with the circulating pipeline; a relay platform, the relay platform being capable of being suspended in seawater, and the relay platform being provided with a storage bin; a water pumping assembly, the water pumping assembly being in communication with the storage bin, and the water pumping assembly being used for discharging seawater in the storage bin into the sea; a mining assembly, the mining assembly being in communication with the storage bin; and a feeding assembly, the feeding assembly being arranged between the storage bin and the circulating pipeline, and the feeding assembly being in communication with the circulating pipeline, and the feeding assembly being used for injecting mineral slurry in the storage bin into the circulating pipeline. The present application can realize efficient lifting of minerals, and reduce the influence on the marine ecology.

The utility model discloses a washing tower for waste gas treatment of circulating water, which comprises a cylinder body, the upper surface of the cylinder body is fixedly communicated with an exhaust pipe, the right side surface of the cylinder body is fixedly communicated with a waste gas inlet pipe, the inner wall of the cylinder body is fixedly provided with a conical filter screen, and the bottom end of the conical filter screen is fixedly provided with a support pipe. And a water pump is fixedly mounted on the left side surface of the barrel. According to the device, waste gas can be discharged into water through a waste gas inlet pipe, the waste gas is preliminarily filtered through water, the water can be conveyed through a water pump, a water pumping pipe and a water conveying pipe, the water in a barrel can enter a flow dividing box, the water can be sprayed out through a spray head, and air can be secondarily filtered through water mist; waste gas can be treated again through the activated carbon adsorption plate, impurities generated during waste gas treatment are intercepted through the conical filter screen, the water pumping end of the water pumping pipe is arranged below the conical filter screen, the water pumping quality is ensured, and water is prevented from blocking the spray head.

The invention provides a device for automatically cleaning a precast pile hole and a using method thereof. The device comprises a water pumping part and a hole cleaning part, the water pumping part comprises a water pump and a water storage container, and the hole cleaning part comprises a flow guide pipe, a water outlet pipe, a mud cutting unit and a mud cleaning unit. During use, the water pumping part is arranged outside the precast pile hole, the hole cleaning part extends into the precast pile hole, then the water pump is started, water outside the precast pile hole is pumped out, stored in the water storage container, communicated with the flow guide pipe and sprayed to the wall of the precast pile hole through the water outlet pipe, and soil on the wall of the hole is softened; softened soil on the hole wall of the precast pile is cut and cleaned through the soil cutting unit, operation is easy, cost is low, and the hole cleaning effect is good.

The utility model discloses a stirring dust removal mechanism of a concrete stirring station, which belongs to the field of concrete stirring station equipment and comprises a stirrer, a dust removal water tank and a track which are arranged in the concrete stirring station. The stirrer is fixedly mounted in the protective frame, and rollers are mounted at the bottom of the protective frame and placed on the rails in a matched manner; an exhaust hole and a water inlet hole are formed in the top of the stirrer, and the tail end, connected with an exhaust pipe, of the exhaust hole extends into the dust removal water tank; the water inlet is connected with the tail end of the water pumping pipeline and extends into the dedusting water tank. According to the dust removal device, dust can be effectively removed, and sewage generated in the using process, such as waste water generated by cleaning a cement paste mixer and a concrete mixing main machine, is recycled into the dust removal water tank and is reused, so that the problems of dust raising and waste recycling in the processing process are well solved; the dust removal water tank can remove dust and can also play a role in water storage, and the problem that a water storage tank is additionally arranged is solved.

The utility model discloses a swimming pool cleaning robot capable of improving wall climbing capacity. The swimming pool cleaning robot comprises a robot body and a tail pushing motor. The machine body is provided with front wheels, rear wheels and a rolling brush. A driving motor is arranged in the machine body and drives the front wheel, the rear wheel and the rolling brush to rotate; the tail pushing motor is arranged in the tail end of the machine body, and a tail pushing water opening is formed in the tail of the machine body. According to the cleaning robot, the tail pushing motor is additionally arranged to provide pushing force, and meanwhile it can be guaranteed that the robot stably climbs a wall to clean the side wall of a swimming pool through suction force provided when the water pumping motor pumps water.

1. Name of the product in this design: Drainage vehicle. 2. Purpose of this design: For use in mobile water pumping. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

This invention proposes a water-lifting structure, an active wave compensation system, and a method for seaplanes, relating to the field of seaplane technology. The water-lifting structure includes a shell, a lifting mechanism, a magnetorheological damper, a water-lifting hopper, a connecting pipe, and a one-way check valve. The shell is installed at the bottom of the seaplane's cabin and has two transfer boxes, each with a water inlet and outlet. The lifting mechanism is installed inside the shell. One end of the magnetorheological damper is connected to the lifting mechanism, and the other end is connected to the water-lifting hopper. The water-lifting hopper has an inlet, a throat, and an outlet. The inlet faces the seaplane's forward direction, and the throat connects both the inlet and outlet, with the cross-sectional area of ​​the throat gradually decreasing from the inlet end to the outlet end. The connecting pipe connects to the outlet. The one-way check valve is installed at the outlet. The magnetorheological damper generates significant impact resistance, effectively protecting the water-lifting hopper and greatly reducing fatigue loads transmitted to the fuselage. The one-way check valve prevents water backflow.

The utility model provides a miniature electric fire fighting truck. The miniature electric fire fighting truck comprises a chassis, a cockpit and a fire fighting carriage, the fire-fighting carriage comprises side plates, a plurality of top plates and a first containing cavity defined by the side plates, the top plates and the chassis. A fixing plate extending in the length direction of the base plate is arranged in the first containing cavity, and the fixing plate divides the first containing cavity into an upper containing cavity and a lower containing cavity. A water tank, a water pumping assembly and a storage box are contained in the upper containing cavity. And a battery cabinet is slidably arranged in the lower accommodating cavity. According to the miniature electric fire fighting truck, the size is reduced, meanwhile, the searchlight with the adjustable angle and the unmanned aerial vehicle are arranged, flexibility is achieved, and meanwhile the on-site investigation capacity of the miniature electric fire fighting truck is improved.

A milk mixing device capable of pumping water from the top comprises a machine base and a kettle arranged on the machine base and further comprises a water pump and a water pumping pipe, a water outlet is formed in the machine base, the water inlet end of the water pump is communicated with the water pumping pipe, the water outlet end of the water pump is communicated with the water outlet, and the water pumping pipe is inserted into the kettle from the top of the kettle and communicated with the interior of the kettle. The water box is located above the kettle and the water pumping pipe, and the water pumping pipe, the water box and the water inlet end of the water pump are sequentially communicated. According to the milk mixing device, the water pump and the water pumping pipe are arranged, the water inlet end of the water pump is communicated with the water pumping pipe, the water pumping pipe is inserted into the kettle from the top of the kettle, and the water pumping pipe is communicated with the interior of the kettle, so that water in the kettle is pumped out of the kettle from the top; the kettle bottom is not made of a glass material; in addition, the water pumping pipe is inserted from the top of the kettle, sediment at the bottom of the kettle can be prevented from being pumped out, and pumped water is clean.

The application discloses a household powder cooking machine, which comprises a machine body with an open top, a top cover arranged at the opening of the machine body, a containing cavity arranged in the machine body, and a powder cooking assembly arranged in the containing cavity. The powder cooking assembly comprises an inner container, a powder bin, a heating element, a water storage barrel, a waste water barrel and a water pumping device. The inner container and the powder bin are in a cylindrical shape with an open top. The powder bin is embedded in the inner container. The side wall and the bottom of the powder bin are provided with a plurality of water filtering holes. The heating element is arranged on the outer wall of the inner container. The water storage barrel and the waste water barrel are arranged below the inner container. The bottom of the inner container is provided with a water outlet. The water outlet is communicated with the waste water barrel through a water discharge pipe. The application has the advantages of simple structure, small size and reasonable layout. The inner container, the water storage barrel and the waste water barrel are arranged in a vertical mode. The powder bin is arranged in the inner container. When cooking or soaking the rice powder, the rice powder is put into the machine body from the top. When changing the water, the water storage barrel or the waste water barrel is taken out from the side of the machine body. The application has the advantages of reasonable layout, small floor space and suitability for being used as a small household electrical appliance.

The invention belongs to the technical field of drainage robots, and particularly relates to a crawler-type drainage robot for cleaning urban drainage crossings, an engine is fixedly mounted on the inner wall of a machine body, a suspension is fixedly connected to the outer wall of the bottom of the machine body, a water suction pump is fixedly mounted on the outer wall of the top of the suspension, and the water suction pump is driven by stretching adjustment of a spring hose. The water pumping position can extend to a low-lying position for water pumping, so that self-adaption of the water pumping height is achieved, meanwhile, the water pumping opening of the spring hose is aligned with a sewer opening, high-pressure water pumping suction force can suck up part of light garbage blocking the sewer opening, the light garbage is separated from the sewer opening, and the blocking condition of a sewer is relieved. Therefore, the drainage efficiency is improved, and the drainage mode is improved.

The invention discloses an underwater profile water sample automatic collection device capable of setting trigger pressure, and relates to the technical field of underwater sampling. The sampler comprises a sampling mechanism and a driving mechanism. The sampling mechanism comprises a sampling barrel, a one-way valve and a piston type water pumping assembly with a piston and a spring; a water inlet is formed in the upper end of the sampling cylinder. The driving mechanism is mainly a transmission assembly, and the transmission assembly is specifically composed of a plug pin, a rotating shaft, a transmission gear, a driving cam, a pressure response air cylinder and the like. A piston rod in the pressure response air cylinder moves under the action of water pressure, a transmission gear is driven to rotate through a rack, a driving cam coaxially arranged with the transmission gear rotates along with the transmission gear and pushes a limiting device on a plug pin, limiting of the plug pin to a piston in the water pumping assembly is relieved, and the sampling barrel starts to collect water immediately. Automatic and reliable opening and closing are achieved through mechanical self-locking and spring energy storage, and the sampling fidelity is high; by setting the relative positions of the driving cam and the rotating shaft, a user can preset the closing triggering depth according to operation requirements; and meanwhile, by configuring a plurality of trigger nodes, the grading response and closing functions of the device under different water layer depths are realized, the sampling flexibility and the adaptability to different water layer environments are improved, and the operation requirements of diversified section sampling can be accurately met.

The invention discloses efficient water pumping equipment utilizing marine environment energy, and belongs to the field of marine engineering equipment. The equipment comprises a high-pressure gas supply assembly, a guide column connected to the seabed, a middle buoy connected to the guide column in a sliding mode, and an upper telescopic cylinder and a lower telescopic cylinder which are connected to the top and the bottom of the middle buoy respectively. The high-pressure gas supply assembly can convert wind energy, solar energy, tidal energy or wave energy into compressed air and store the compressed air. The middle buoy can change the resultant force of the gravity and the buoyancy by utilizing the rising and falling of tides or through the charging and discharging of high-pressure gas and the change of the water discharging and absorbing capacity of the middle buoy, the middle buoy is acted to slide along the guide post, and the upper and lower telescopic cylinders are respectively driven to alternately pump water by the up-down movement of the middle buoy. By filling or discharging high-pressure gas into or out of the middle buoy, the buoyancy and gravity balance of the middle buoy can be actively adjusted, so that the movement frequency of the middle buoy is greatly increased, the tidal cycle limitation is broken through, and all-weather, high-frequency and efficient water pumping operation is achieved in combination with the marine environment energy storage condition.

The invention discloses a water pumping and sand discharging pipeline system for a sand hopper and a construction technology of the water pumping and sand discharging pipeline system and belongs to the technical field of pipeline systems. A water pumping and sand discharging pipeline system for a sand hopper comprises a sand hopper body fixedly arranged on a ship deck through a fixing rod, and further comprises a pumping and sand discharging part, the pumping and sand discharging part comprises a first deck pump and a second deck pump which are arranged on the ship deck, the first deck pump is connected with a first discharging pipe, and the second deck pump is connected with a second discharging pipe; the pumping water pumping part comprises an underwater pump and a submersible pump which are arranged in the ship bridge frame; and a pumping and draining pipeline assembly. By refitting an existing cutter suction dredger and integrating the pumping and draining pipeline assembly and the cross-shaped connecting pipeline, flexible switching of the first deck pump, the second deck pump and the underwater pump among three modes of double-pump parallel connection, double-pump series connection and three-pump series connection is achieved, the operation production efficiency is improved, the production cost is reduced, and the service life of the cutter suction dredger is prolonged. And the device is suitable for an environment-friendly construction scene of short-row-pitch large-yield or long-row-pitch accurate conveying.