5249 results about "Outfall" patented technology

The invention provides a sewage AI intelligent management and control system based on a neural network algorithm, which comprises multi-source data acquisition units, an algorithm processing unit and an execution feedback unit, and is characterized in that the multi-source data acquisition units are deployed at a water inlet and a water outlet of a sewage treatment assembly line and in a biological reaction tank; comprising a fast parameter detection array composed of a pH sensor, a conductivity sensor, a dissolved oxygen sensor, a turbidity sensor, a temperature sensor and an ORP sensor. The process state monitoring group consists of an aeration equipment rotating speed sensor, a reflux pump flowmeter and a sludge concentration meter; the fast parameter detection array and the process state detection group are connected with the edge computing node through an industrial bus, perform sliding window mean filtering preprocessing on original data, generate regulation and control instructions of aeration rate, reflux ratio and sludge discharge frequency through model calculation, and send the regulation and control instructions to the execution unit; the complete refined AI intelligent control sewage treatment system based on the neural network algorithm is realized.

The invention belongs to the technical field of fluid tests, and relates to a water tunnel test device and a test method. The device comprises two water cabins and a water tunnel test section, air bags are arranged in inner cavities of the two water bins, the two air bags are communicated with an external compressed air source through breather pipes respectively, water cavities are formed between the air bags and the inner walls of the water bins where the air bags are located, and the water cavities are filled with water. A water inlet of the water tunnel test section is respectively communicated with the water cavities of the two water cabins through a water inlet three-way valve, and a water outlet of the water tunnel test section is respectively communicated with the water cavities of the two water cabins through a water outlet three-way valve. According to the invention, through inflation and deflation operation of the two air bags and regulation and control of working states of the water inlet three-way valve and the water outlet three-way valve, water circularly flows between the two water cabins and continuously flows through a water tunnel test section, so that closed cycle operation of a water tunnel test is realized through an air pressure loading mode; the problems that due to the fact that an existing closed circulating water tunnel system is directly pressurized through a pump, water flow direction conversion is complex, test stability is poor, and pressure change is difficult to accurately control are solved.

The invention discloses a water storage and drainage system capable of keeping slope stability. The water storage and drainage system comprises a water drainage pipe assembly and an automatic water supplementing assembly. The drainage pipe assembly comprises a plurality of transverse assembly type pipes, a plurality of oblique assembly type pipes and a plurality of plastic capillary pipes, the transverse assembly type pipes and the oblique assembly type pipes are perpendicularly communicated in a staggered mode, and the transverse assembly type pipes are communicated with the plastic capillary pipes at the corresponding positions. A sand cushion layer and a perlite layer are laid on the slope surface of the side slope; the automatic water supplementing assembly comprises a water pumping machine, a plurality of water supplementing pipes and a plurality of wireless temperature and humidity sensors. A water outlet of the water pumping machine is connected with the water supplementing pipes through a water conveying pipeline. The water pumping machine is provided with an intelligent automatic sensing system; the water storage and drainage system capable of keeping the stability of the side slope further comprises a plurality of assembly type concrete sash beams laid on the perlite layer, and the water supplementing pipe is connected with the rotating spray heads. A soil dressing layer used for planting cold-resistant water-retaining vegetation is laid in the planting area of the fabricated concrete sash beam. The water content of the side slope can be effectively adjusted and controlled, so that the stability of the side slope is improved.

The invention discloses rock crushing and coring equipment for geotechnical engineering investigation, and belongs to the technical field of drilling equipment. The rock crushing and coring equipment for geotechnical engineering investigation comprises a drilling tool, a sampling barrel and a high-pressure water supply device, and further comprises a triggering part, a coring part and a control part, and the triggering part is arranged at the end, away from a drill bit of the drilling tool, of the sampling barrel; a first sliding groove is formed in the water flow reversing part, the high-pressure water supply device communicates with a water outlet in the drill bit through the water flow reversing part, the water flow reversing part communicates with the first sliding groove, and the water flow reversing part is used for communicating the high-pressure water supply device with the first sliding groove when the triggering part is triggered; one end of the sliding sleeve is hermetically and slidably connected into the first sliding groove; the cut-off part is connected with the other end of the sliding sleeve, and when high-pressure water is introduced into the first sliding groove, the sliding sleeve drives the cut-off part to move into the sampling barrel. According to the rock crushing and coring equipment for geotechnical engineering investigation, the drill bit can be cooled by using high-pressure water, the abrasion of the drill bit is reduced, and a rock core is cut off by using the high-pressure water as power, so that the integrity of the obtained rock core can be ensured.

The invention relates to the technical field of flood drainage machines, and discloses an intelligent flood drainage robot and a water pump assembly thereof, the water pump assembly comprises a water inlet section, one end of the water inlet section is provided with a water inlet, a drainage pump is arranged in the water inlet section, and a first pressure sensor is arranged between the water inlet and the drainage pump; the water outlet section is connected with the drainage section, a second pressure sensor is arranged on the water outlet section, and a water outlet is formed in the end, opposite to the water inlet section, of the water outlet section; and the first controller is electrically connected to the first pressure sensor, the second pressure sensor and the drainage pump. The first pressure sensor and the second pressure sensor are arranged on the water inlet side and the water outlet side of the drainage pump correspondingly, the water pressure in front of and behind the drainage pump can be accurately monitored in real time in the series use process of the flood drainage robots, and the drainage pump is accurately adjusted to adapt to the drainage flow of the front-section flood drainage robot; safety of fan blades and a motor of the drainage pump is protected, and the service life of the drainage assembly is guaranteed.

The present disclosure provide a shower column, including a water passing body, where the water passing body includes at least five water passing ports, namely a water inlet, a through port, a switching port, and at least two water outlets, the water inlet is in communication with the switching port via the through port, and the switching port is in communication with the two water outlets; a valve body, provided on the switching port and configured to select at least one of the water outlets to communicate with the water inlet; and a functional part, provided on the through port. At least five water passing ports are arranged on the water passing body and the multiple water passing ports are close to each other and concentrated, simplifying the structure of the water passage and reducing the volume of the water passing body.

The invention discloses a drinking water quality safety detection and early warning system and method based on big data, and belongs to the technical field of big data. The method comprises the following steps: dividing water quality detection points of a water supply pipe by using a detection point spacing formula, setting the water quality detection points, and numbering each water quality detection point; collecting water quality parameters, determining the weight of each water quality parameter, and calculating water quality indexes of different water quality detection points; analyzing historical data by using a convolutional neural network to obtain a water quality difference value of different water quality detection points in the ramp; obtaining a water quality parameter change trend according to the water quality difference value, collecting environmental parameters, and combining the water quality parameter change trend with the environmental parameters to obtain an influence function of the environmental parameters on the water quality parameters; when the water quality parameter of the water outlet does not meet the safety threshold value, early warning is carried out; monitoring water quality parameters in real time by using a long-short-term memory network, and predicting water quality risks; and evaluating the effects of different adjustment strategies by using an intelligent recommendation algorithm, and selecting an optimal scheme for implementation.

The invention relates to the technical field of concrete engineering, in particular to a mass concrete temperature adjusting method, system and device and a storage medium, the method is applied to an intelligent controller, and the method comprises the steps that the internal and external temperature difference between the top of mass concrete and the interior of the mass concrete, and the water temperature of a water inlet and the water temperature of a water pump water flow hose are obtained; according to the internal and external temperature difference, the water outlet water temperature, the water inlet water temperature and the actual flow speed fed back by the flow speed sensor, obtaining the water pump rotating speed; determining target water temperature according to the water pump rotating speed; according to the water temperature of the water inlet and the target water temperature, the cooling water temperature assembly is controlled, and the mass concrete temperature is adjusted. According to the method, the effective cooling effect of the mass concrete is achieved, energy conservation and emission reduction are achieved, potential hazards existing in the mass concrete are eliminated, and the engineering quality is ensured.

The invention relates to a river network grading system and method based on a graph theory and confluence cumulant, and belongs to the technical field of water conservancy projects and geographic information. Comprising the following steps: acquiring original DEM data and water system data, and converting the water system data to a preset projection coordinate system; extracting a primary river network based on the DEM data, and screening the primary river network in combination with the length of the river network and the area of the drainage basin to obtain a simplified river network; river network flow calculation: carrying out flow assignment on each river network element in the simplified river network based on the confluence cumulant; graph theory modeling: abstracting the simplified river network into a directed graph model; and river network grading: reverse tracing is carried out by taking the water outlet as a starting point, and the hierarchical relationship between the trunk and the branch is determined by combining the in-degree / out-degree and the edge weight of the node, so that river network grading is realized. According to the method, river network grading is upgraded from morphological description to hydrological function description, and the method is suitable for high-precision river network refined analysis, intelligent water conservancy emergency management and other scenes.

The invention discloses an anti-clogging water supply and drainage filtering device, and relates to the technical field of water supply and drainage filtering, the anti-clogging water supply and drainage filtering device comprises a water supply and drainage pipeline, and the front end and one side of the water supply and drainage pipeline are respectively provided with a water inlet and a water outlet. The driving motor drives the supporting shaft A to enable the rolling brush to revolve, the rolling brush reversely rotates by means of the fluted disc A and the gear ring A, and dynamic shearing force is formed to efficiently strip impurities on the surface of the filter screen; the inclined push plate and the rolling brush guide the stripped impurities into the impurity guide piece through centrifugal force, and the spiral piece is combined for discharging, so that secondary blockage is avoided; the supporting shaft A is linked with the supporting shaft B through the belt pulley group, so that the filter screen reversely rotates at a constant speed, the relative speed of the rolling brush and the filter screen is multiplied, the impurity stripping effect is enhanced, loose impurities are thrown to the edge of the filter screen through centrifugal force, the accumulation risk of a central area is reduced, and self-cleaning of the filter screen, directional discharging of the impurities and dynamic prevention and control of the blocking risk are achieved through the mode. The continuous operation efficiency of the water supply and drainage filtering device is effectively improved, and maintenance cost and energy consumption are reduced.

The invention discloses an indoor water tank sediment pushing characteristic acquisition system and method, the system mainly comprises a water tank main body, a buffer unit, a drainage adjusting unit, a sediment throwing device, an imaging unit, an adjustable support and a data processing unit, and according to the method, non-contact data acquisition is carried out through a high-definition camera and a three-dimensional terrain measuring instrument; automatic identification, parameter extraction and migration speed calculation of landforms such as sand waves are achieved, the sediment bed surface is not touched in the whole process, damage to the bed surface form caused by traditional contact type measurement is eliminated, and the authenticity and reliability of data are ensured. Meanwhile, the buffer design of the combination of the flow slowing plate and the multi-stage water baffle is adopted, the kinetic energy of water flow is effectively dissipated through the graded water outlet structure, the impact force of injected water flow is greatly reduced, the bed surface is prevented from being scoured in the initial water injection stage, and the stability of the initial test condition is powerfully protected.

The invention discloses a water outlet device and a bubbler thereof, and the water outlet device comprises a shell which is provided with a mounting cavity, and a water inlet, a water outlet and an air inlet which are all communicated with the mounting cavity; the bubbling net is flexible or elastic, the edge of the bubbling net is connected with the shell, the bubbling net can cover the water outlet, and the bubbling net is provided with a plurality of first net holes and a dirt outlet with the cross section area larger than that of the first net holes; the accelerating piece is arranged in the mounting cavity, can slide towards the bubbling net and back to the bubbling net, and abuts against the area, close to the dirt outlet, of the bubbling net; the elastic piece is used for applying elastic force towards the accelerating piece to the area, close to the dirt outlet, of the bubbling net; the accelerating piece is configured to slide towards the bubbling net under the action of water flow so as to support the bubbling net to be arched in the direction opposite to the accelerating piece. The bubbler can perform self-cleaning on the bubbling net so as to prevent filth blockage of the bubbling net.

The utility model provides a hydropower station unit internal environment anti-condensation simulation test device, which comprises a temperature and humidity control environment box and a temperature-controllable circulating water tank, a cooling-water machine refrigerates water in the temperature-controllable circulating water tank, and two ends of the temperature and humidity control environment box are provided with a water inlet and a water outlet which are communicated with a test bearing water pipe. The temperature-controllable circulating water tank is connected with the water inlet and the water outlet through a water supply pipeline, the water supply pipeline is provided with a water pump, the outer side of the test bearing water pipe is provided with different test areas, the different test areas are coated with different anti-condensation coating samples, an electronic balance is arranged in the temperature and humidity control environment box corresponding to the test areas, and the electronic balance is provided with a condensation collecting disc. And the temperature and humidity control environment box is placed on the vibration platform. The device can simulate the anti-condensation performance of anti-corrosion samples of different processes in different environments.

A water surface cleaning apparatus, which includes: a housing including a front end located close to a traveling direction of the apparatus and a rear end far away from the traveling direction of the apparatus; a filtering unit detachably arranged in the housing and including a water inlet and a water outlet, for filtering water entering the filtering unit via the water inlet and discharging filtered water out of the filtering unit via the water outlet; a driving unit for driving the apparatus to travel on the water surface; waterflow channels are symmetrically arranged on both sides of a longitudinal axis between the front end and the rear end, and the driving unit can drive the apparatus to travel on the water surface by driving the waterflow passing through the waterflow channels; a direction of the waterflow path provided by the waterflow channel is inclined to the longitudinal axis.

The utility model provides a water outlet control mechanism and a water outlet device, and relates to the technical field of water outlet. The water outlet control mechanism comprises a main body and a water outlet control structure, wherein the main body is provided with a water inlet and a water outlet; the water outlet control structure is at least partially arranged in the main body, and the water outlet control structure is configured to move relative to the main body, so that the water inlet and the water outlet are selectively communicated, and the water outlet control structure is switched between a quantitative water outlet mode and a non-quantitative water outlet mode. Free switching between a quantitative water outlet mode and a non-quantitative water outlet mode can be achieved through the water outlet control structure, the modes are convenient to switch when a user uses the water dispenser, and the use feeling of the user is improved. Meanwhile, the main body is provided with the water inlet and the water outlet, the water paths in the quantitative water outlet mode and the non-quantitative water outlet mode can share the same water inlet and the same water outlet, additional water inlets or water outlets do not need to be added, and the production and manufacturing cost is saved.

The invention relates to the technical field of analysis methods of ground materials, and discloses a sand liquefaction characteristic test device and a test method thereof, the sand liquefaction characteristic test device comprises a vibration table, a box body, an inverted filter assembly, a detection assembly and an analysis assembly; the box body is connected with the vibration table, a water inlet and a water outlet are formed in the box body, a flow stabilizing chamber, an inverted filter layer and a sample layer for placing a saturated sand sample are sequentially arranged in the box body from bottom to top and are communicated, the water inlet is communicated with the flow stabilizing chamber, the water outlet is communicated with the top of the sample layer, and the inverted filter assembly is arranged in the inverted filter layer; the detection assembly comprises a first accelerometer and a pore water pressure gauge, and the detection assembly is electrically connected with the analysis assembly; water is injected into a saturated sand sample through a water inlet, underground water seepage and seepage failure are simulated, and then sand seismic liquefaction is simulated through a vibration table. According to the invention, seepage and seepage failure effects of an actual saturated sand stratum under the action of underground water can be considered, and the earthquake liquefaction phenomenon of sand can be simulated more truly.

The invention discloses an intelligent diversion treatment device for a discharge port, and relates to the technical field of rainwater and sewage diversion. The intelligent diversion treatment device comprises a diversion barrel, the interior of the diversion barrel is divided into a fan-shaped isolation area through two baffles, a water inlet of the diversion barrel is located in the fan-shaped isolation area, water falling ports are formed in the two baffles, and rotating plates are connected to the portions, on the outer side of the fan-shaped isolation area, of the diversion barrel. Cleaning grooves are formed in the bottoms, close to the positions of the two baffles, in the fan-shaped isolation area, sewage draining outlets are formed in the bottoms of the cleaning grooves, rotating drums are rotationally connected into the cleaning grooves, and first packing augers driven by second motors are rotationally arranged in the rotating drums; the rotating shaft drives the rotating plate to rotate and simultaneously drives the rotating drum to rotate, so that the fan-shaped isolation area and the drain outlet are communicated or staggered by the drain channel. Rainwater and sewage can be distributed, and sludge and solid garbage can be automatically removed.

The invention discloses an enhancement releasing platform which comprises a releasing pool arranged on the ground, the rear end of the releasing pool is a placing area, the front end of the releasing pool is a releasing area, a water outlet is formed in the front end of the releasing pool, a gate is arranged at the water outlet, the water outlet is communicated with a releasing groove, and the end, away from the releasing pool, of the releasing groove extends to the bottom of the releasing area. A water pumping assembly is arranged on the rear side of the releasing pool and communicated with a water inlet pipe, the end, away from the water pumping assembly, of the water inlet pipe extends to the releasing point, the water pumping assembly is communicated with a water outlet pipe, and the end, away from the water pumping assembly, of the water outlet pipe is communicated with the releasing pool. When the device is used, the biological individuals are firstly transferred into the releasing pool, the water level of the releasing pool is high, the height difference during transferring is small, the biological individuals are not prone to being injured, the biological individuals are released into a water body through the releasing groove after the gate is opened, in the releasing process, the releasing groove cannot be damaged due to water impact, friction and collision are reduced, and the survival rate is increased.

The utility model discloses a solid-liquid separation device for wastewater treatment, which comprises a tank body, and a water inlet and a water outlet which are symmetrically arranged on the side wall of the tank body, a driving mechanism is arranged on the side wall of the tank body, the output end of the driving mechanism extends into the tank body and is connected with a rotating frame, and one end of the rotating frame close to the driving mechanism is of a closed structure. One end of the rotating frame is open, the other end of the rotating frame is of an open structure, the open structure is supported through a supporting structure, the rotating frame is covered with a filtering roller, and a waste discharging assembly is arranged in the filtering roller. Wastewater enters from the water inlet, is filtered and then is discharged from the water outlet, solids in the wastewater enter the filtering roller and rotate along with the scraper, and when the solids rotate to a high point, the flushing pipe is externally connected with a pump body, and the solids attached to the scraper are flushed down, fall into the waste discharge groove and finally are discharged from the waste discharge pipe through the spray head to the filtering roller. And solids in the wastewater are separated, so that solid-liquid separation is realized.

The present invention relates to the technical field of sewage treatment, and in particular to a device for collecting floating mud slag at the edge of a sewage treatment pool, comprising a support frame, a collecting trough installed on the support frame, the collecting trough being connected to a collecting box, a conveyor belt installed in the collecting trough, and the conveyor belt being able to transfer floating mud slag to the collecting box; a suspension beam installed on the support frame, a lifting mechanism installed on the suspension beam, a mounting block moving along the guide rail of the lifting mechanism installed on the guide rail, and the lifting mechanism being able to adjust the height of the mounting block; a circulation mechanism installed on the mounting block, the circulation mechanism comprising a water spraying port opened on the side of the mounting block and a submersible pump installed under the collecting trough, the water outlet of the submersible pump being connected to the water spraying port through a pipeline. The present invention forms a water flow circulation from the middle to the pool edge at the water surface position, on the one hand, transports the floating mud slag at the middle position to the pool edge position, and on the other hand, does not disturb the sludge settled at the bottom of the pool, causing secondary turbidity of the pool water, thereby improving the collection efficiency of floating mud slag.

The utility model discloses a prefilter which comprises a shell part and a filter element, the shell part is provided with a water inlet, a water outlet and a drain outlet, the filter element is arranged in the shell part and is matched with the shell part to form a raw water cavity communicated with the drain outlet and a purified water cavity communicated with the water outlet, a water inlet channel is arranged between the water inlet and the raw water cavity, and a water outlet channel is arranged between the water inlet and the purified water cavity. A backwashing channel is arranged between the water inlet and the water purification cavity, and a plugging piece for opening and closing the sewage draining exit is arranged at the sewage draining exit; and the water path switching mechanism is arranged on the shell part and is used for controlling the switching opening of the water inlet channel and the backwashing channel. When the pre-filter disclosed by the utility model is in a filtering state, the backwashing channel is in a closed state, so that if a backwashing filter screen is arranged on the backwashing channel, the backwashing filter screen cannot filter water flow in the filtering state, so that dirt on the backwashing filter screen can be reduced, and normal filtering of the backwashing filter screen in the backwashing state is ensured.

The invention discloses an offshore water quality comprehensive treatment device utilizing an artificial wetland technology, and belongs to the technical field of sewage treatment. The offshore water quality comprehensive treatment device comprises a base, a water inlet and a water outlet are formed in the two sides of the base respectively, a lifting cavity corresponding to the water outlet is formed in the base, and a balancing weight is arranged in the lifting cavity in a sliding fit mode; lifting columns are symmetrically and integrally formed at the top end of the balancing weight, air cavities are symmetrically formed in the base, the top ends of the two lifting columns extend into the corresponding air cavities respectively and are in sliding fit with the air cavities, and ventilation assemblies used for conveying air in the air cavities to the water collection and drainage layer are arranged on the inner side walls of the air cavities; a plurality of teeth are arranged on one side of each lifting column in the length direction of the lifting column, and the teeth are meshed with swing assemblies used for generating periodic arc-shaped swing. And a vibration bracket is embedded in the filler layer. According to the invention, offshore tidal energy is utilized to realize self-adaptive opening and closing of the water outlet, and meanwhile, alternate shearing force is generated on the filtering filler in the base, so that the possibility of hardening of the filler after long-time working is reduced.

The utility model discloses a high-efficiency desilting device for water conservancy construction, which relates to the technical field of desilting for water conservancy construction and comprises a material guiding mechanism, a separating mechanism is arranged in the material guiding mechanism, one end of the separating mechanism is fixedly connected with a smashing mechanism, and the separating mechanism comprises a first driving motor. And the output end of the first driving motor is fixedly connected with a limiting rod. Sludge is pumped into the separation box through the silt pumping pump, the first driving motor is started, the separation box is driven to rotate through the limiting rod, the silt is swung, water in the silt is discharged from the water outlet through the filter screen, the silt is blocked by the filter screen and left in the separation box, and after desilting is finished, the first box door is opened, the electric push rod is started, and the separation box is driven to rotate. The silt pushing plate is driven to move, after the silt is pushed into the first box door, the silt can be cleaned, water and the silt are separated in the whole process, then the silt is cleaned in a centralized mode, and then the purpose of improving the desilting efficiency is achieved.

The invention discloses an anti-scouring test device. The anti-scouring test device comprises a stirring assembly, a supporting frame, a scouring water tank, a sample mold, a filtering tank and a measuring assembly, the stirring assembly is erected above the flushing water tank through a supporting frame, and the stirring end of the stirring assembly extends into the flushing water tank; the sample mold is arranged below the washing water tank and is detachably connected and communicated with the bottom of the washing water tank; a water inlet and a water outlet of the filter tank are respectively connected with a flushing water tank pipeline, and a valve is arranged on the pipeline; the measuring end of the measuring assembly extends into the washing water tank to measure washing data. On one hand, water circulation of the scouring experiment is achieved, on the other hand, redundant sediment in water is filtered, impact of sediment damaged by scouring on the surface of a sample is reduced, and on the other hand, the amount of the filtered sediment can be used for evaluating the anti-scouring performance of the solidified soil after the test is finished.

The present disclosure provides a method for simulating the environmental exposure concentration of chemical substances in lakes that meets the scale of a watershed, including: dividing the lake into regions according to a division rule to obtain multiple partitions, and recording the geometric parameters of each partition, the division rule including a first rule that the only water outlet and the water inlet of the lake are divided into different partitions and a second rule that the regional division meets the needs of chemical substance concentration management; calculating the calculated water flow rate between each partition on the same day and the calculated water outflow rate of the water outflow partition based on the daily hydrological data from the watershed hydrological model, the estimated value of the water level of each partition and the geometric parameters; optimizing and adjusting the partition by adjusting the water level or volume of the partition based on an optimization index, the optimization index including a first index related to the calculated water outflow rate of the water outflow partition on the same day and a second index related to the water flow rate between each partition on the same day; calculating the daily chemical concentration of the adjusted partition based on the chemical substance data from the watershed hydrological model.

The utility model provides a water draining structure of a humidifier, the top of the water draining structure is provided with a flow channel for allowing water flow to pass through and a water inlet communicated with the flow channel, the flow channel comprises an annular bottom wall and a side wall surrounding the periphery of the bottom wall, and the bottom wall is provided with a plurality of water outlets arranged at intervals; the side wall is provided with a plurality of flow guide plates protruding in the flow channel, one flow guide plate at least corresponds to one water outlet, the water outlets are arranged close to the sides, back to the water inlet, of the flow guide plates, and the included angle formed by the flow guide plates and the side wall close to the water outlets is an acute angle. Water flow in the flow channel is divided and guided through the flow guide plate, so that one part of the water flow can flow into the passing water outlet, and the other part of the water flow continues to flow backwards along the flow channel, the situation that the water flow excessively flows out of the water outlet close to the water inlet during free flowing is avoided, and the water flow at the water outlet at the far end is guaranteed; and therefore, the water drainage uniformity of the water outlets at different positions is improved, and the uniformity of the wetting wet curtain is also improved.

The embodiment of the invention provides a water purifier and a control method thereof, the water purifier is provided with a raw water inlet and a purified water outlet, and the water purifier also comprises a water production module, a water tank, a hot tank and a control module; a water inlet of the water production module is connected to the raw water inlet, and a water outlet of the water production module is connected to a water inlet of the water tank and is also connected to a water inlet of the hot tank; a water outlet of the water tank is connected to the purified water outlet through a first waterway, and a water outlet of the hot tank is connected to the purified water outlet through a second waterway; a first pumping device and a second pumping device are respectively arranged on the first water path and the second water path; at least one of the first pumping device and the second pumping device is a flow-adjustable pumping device, and the control module is used for determining the flow of the flow-adjustable pumping device according to the expected water taking temperature. By adjusting the flow of the adjustable pumping device, the proportion of hot water in the hot tank and / or normal-temperature water is adjusted, and mixed water with any water temperature, which is accurate in temperature and lower than the temperature of the hot water in the hot tank, can be obtained.

The invention discloses a seawater desalination hydrogen production device which comprises a base with a closed bottom and an axially-through shell barrel, seawater through holes are formed in the side wall of the base, and the shell barrel is fixed to the top of the base; the pneumatic lifting mechanism comprises an air-closed pneumatic head, a pneumatic head bracket and a connecting bracket which are sequentially connected from top to bottom, and a connecting rod of which one end is connected with the output end of the pneumatic head and the other end is fixed at the top of the filter cartridge; the side wall of the filter cartridge is coated with a selective permeable membrane, a plurality of filter holes are formed in the filter cartridge, and a water inlet and a water outlet are formed in the bottom of the filter cartridge; the water inlet pipe connected with the water inlet and the water outlet pipe connected with the water outlet are used for forming an alkali liquor circulation path; the air-closed pneumatic head is controlled to drive the filter cartridge to lift so as to adjust the osmotic pressure difference, so that seawater desalination and alkali liquor concentration dynamic balance are realized. The device can automatically ascend and descend according to the liquid level height in the filter cartridge, and the proportion of alkali liquor to pure water in the filter cartridge is regulated and controlled.

The invention discloses a pressure-balanced floor drain, and relates to the technical field of floor drains. The technical scheme thereof is as follows: the floor drain comprises a cylinder and a reset device, wherein the upper end of the cylinder is a water inlet, the lower end of the cylinder is a water outlet, the reset device is arranged at the lower end of the cylinder, a sealing cover is arranged between the reset device and the cylinder, the reset device can apply a pre-tightening force to the sealing cover, so that the sealing cover is close to the water outlet and seals the water outlet, a stroke chamber is arranged on the sealing cover, a through hole 1 connected to a sewer pipe is arranged below the stroke chamber, a through hole 2 connected to the outside is arranged above the stroke chamber, a floating member is arranged in the stroke chamber, and the floating member can seal the through hole 1 by its own gravity. The floating member rises under the action of the air pressure difference, so that the air pressure of the lower sealing section is the same as or close to the outside air pressure, so as to ensure that the sealing cover can move up and down normally, and achieve the purpose of relatively smooth discharge of accumulated water at the water inlet.

The invention relates to the field of water quality monitoring, in particular to a water area environment water quality on-line intelligent monitoring device and method, and the water area environment water quality on-line intelligent monitoring device comprises a shell, a defoaming mechanism and a monitoring mechanism; a water inlet and a water outlet are formed in the shell, and a water flow channel is formed in the shell; a water inlet valve is mounted at the water inlet; the defoaming mechanism comprises a negative pressure cylinder arranged in the shell and a piston assembly arranged in the negative pressure cylinder; the piston assembly moves upwards to suck the water flow channel to negative pressure, bubbles in water flow are promoted to be separated out, the pressure difference between the two sides of the water inlet valve is increased, and the water flow is promoted to enter the water flow channel through the water inlet valve. The opening threshold value of the water inlet valve is adjusted according to the gas amount in the water flow, so that new water flow enters from the water inlet valve when the piston assembly sucks the water flow channel till the absolute value of the negative pressure is large enough, and the separation effect of bubbles in the original water flow and the new water flow in the water flow channel is guaranteed. And the water quality monitoring accuracy of the monitoring mechanism is improved.