84 results about "Water efficiency" patented technology

The invention provides a farmland water efficiency data mining analysis method, which comprises the following steps of: acquiring multiple types of soil moisture content information, irrigation water quantity data and crop growth index data corresponding to different depths on different point positions acquired in multiple monitoring periods in a target farmland area to form a dynamic monitoring data set; the method comprises the following steps: acquiring a dynamic monitoring data set, performing multi-dimensional correlation analysis on the dynamic monitoring data set to generate a farmland water efficiency correlation analysis result, performing strategy matching on the correlation analysis result based on a preset water efficiency optimization strategy network to generate a water efficiency optimization regulation and control scheme, and finally feeding back the water efficiency optimization regulation and control scheme to a farmland irrigation control system. Irrigation parameter adjusting operation is triggered, and optimization of farmland water efficiency and reasonable utilization of water resources are achieved.

The invention discloses a winter wheat multi-target irrigation dynamic optimization method based on a crop model and artificial intelligence, and belongs to the field of agricultural intelligent irrigation optimization and decision, the method comprises the following steps: preprocessing meteorological data, soil data, crop parameter data and irrigation management data to obtain standardized input data; carrying out coupling processing on the AquaCrop model and the PyFAO56 model based on the standardized input data to obtain final output of a coupling model; based on the final output of the coupling model, optimizing decision variables by adopting an NSGA-2 multi-objective optimization algorithm to obtain a Pareto optimal solution set; and sorting the candidate schemes in the Pareto optimal solution set by combining a fusion strategy of an entropy weight method and a random forest algorithm to obtain a final irrigation strategy. According to the invention, through multi-objective optimization, objective weighting and machine learning intelligent evaluation, a novel precise irrigation scheme considering both yield and water efficiency is provided.

The invention relates to the technical field of flood forecasting, in particular to a flood forecasting error real-time correction method and system, and the method comprises the steps: obtaining data under a unified time reference, calculating a water purification head, and obtaining the instantaneous flow; inquiring the theoretical efficiency, calculating the actual measurement efficiency, and carrying out difference calculation to obtain an electricity-water efficiency residual error; evaluating the electricity-water efficiency residual error to obtain a stability index; judging an operation phase, and calculating the confidence coefficient of the operation phase according to the stability index; generating a correction vector and correcting the uncorrected process line to obtain a corrected process line; projecting the correction process line according to a preset engineering feasible region to obtain first correction output; performing online checking and incremental correction on the first correction output to obtain final correction output; and updating the model initial state and the boundary condition of the next time window according to the final correction output. According to the method, the problem of error accumulation caused by phase misjudgment under the hysteresis effect and field disturbance of a traditional method is solved, and the real-time accuracy of flood forecasting is remarkably improved.

The embodiment of the invention discloses a water resource dynamic evolution simulation analysis method and system based on digital twinning, and the method comprises the steps: calling a target drainage basin water resource monitoring data set from a preset distributed database cluster after obtaining the authorization authentication of a digital twinning server; performing space-time correlation processing on the data set and the meteorological environment data of the target watershed to obtain a conjoint analysis data set with a unified space-time reference system; performing time-space coupled water resource cyclic evolution simulation on the conjoint analysis data set through a preset MIKESHE model to obtain a target drainage basin water resource dynamic evolution process simulation result; according to the result, a quantitative influence simulation result of the climate change on the agricultural irrigation water resource of the target watershed is generated, the result comprises an irrigation water demand change trend, water resource supply and demand balance and agricultural water efficiency fluctuation characteristics, and a scientific basis is provided for agricultural irrigation water resource management.

The invention discloses an irrigation decision method based on climate time sequence analysis and a crop growth model, and the algorithm process comprises the steps: processing multi-scale meteorological data through employing a climate perception prediction yield model of a double attention mechanism based on agent guidance in a first stage (yield prediction); the model comprises a cross-space attention module optimization spatial feature selection and agency intensified attention mechanism fusion long-term and short-term meteorological knowledge, and accurate yield prediction is realized. In the second stage (irrigation decision), the prediction output of the first stage is analyzed by using an integral gradient, the core meteorological variable weight of each growth period is quantified, and the month-meteorological-yield dynamic risk weight is constructed. The state space of reinforcement learning is composed of meteorological factors, irrigation volume and crop physiological states; and a Pareto optimization reward function is adopted to coordinate the dynamic risk, yield and water efficiency, and optimal irrigation strategy learning is driven. According to the invention, meteorological risk collaboration and water efficiency balance are driven, and powerful support is provided for precise irrigation and yield improvement.

The application belongs to the technical field of drain valves, and discloses a time-delay valve core, a time-delay drain valve applying the same and a sanitary ware, wherein the time-delay valve core comprises: a body provided with a water inlet area, a water control flow channel and a water passing area, the water control flow channel being communicated between the water inlet area and the water passing area; a first adjusting member rotatably installed on the body, the water control flow channel being configured to change the water discharge flow to the water passing area with the rotation of the first adjusting member; and according to the water discharge requirement of a product, the water discharge flow of the water control flow channel is adjusted by using the first adjusting member, so that the adjustment of multiple water efficiency is realized, and the time-delay valve core is suitable for different water products. The whole structure is simple, the adjustment is convenient, and the applicability is wide.

The present invention relates to a treated inorganic oxide slurry and process of making including: a. treating an inorganic oxide particle with aqueous inorganic metal salt; b. washing the treated inorganic oxide particle with water and removing aqueous inorganic metal salt to form a washed slurry having 30-60% by weight treated inorganic oxide particles in water; c. milling the washed slurry to form a milled slurry; d. removing water from the milled slurry to form a dewatered filter cake having 60-85% by weight treated inorganic oxide particles in water; and e. contacting the dewatered filter cake with water, dispersant, or a mixture of water and dispersant to form a product slurry. The process uses less energy and water compared with prior art processes that include jet milling and drying steps, while maintaining performance. The slurries can be used in applications including coatings and paper.

The utility model relates to the field of fruit tree watering, in particular to a fruit tree watering device. According to the fruit tree watering device, the device can be automatically driven to move along the guide rails for watering, rotating wheels are prevented from falling into soil to affect movement, use convenience is improved, watering efficiency is improved, the guide rails can be spliced, and watering requirements under different planting conditions can be met conveniently. A fruit tree watering device comprises a guide rail, a sliding supporting frame and the like, and the sliding supporting frame is connected to the guide rail in a sliding mode. The motor drives the belt wheel to rotate, the rotating wheel rotates, then the sliding supporting frame is driven to move, water is sprayed out of the spray head through the water pump, and therefore the device can be automatically driven to move along the guide rail for watering, the rotating wheel is prevented from falling into soil to affect movement, use convenience is improved, and watering efficiency is improved. The guide rails can be spliced, so that watering requirements under different planting conditions can be met.

The present application relates to a kind of cleaning machine and cleaning method, including tank and slag basket, tank bottom wall is provided with the recess being arranged around the outer periphery of drain, the recess is provided with heating element for heating water, the heating element is the annular structure that will drain and slag basket are surrounded therein.The present application is provided with recess around the outer periphery of drain and slag basket, and heating element is arranged in the bottom of recess, recess is used as water return area on the one hand, greatly reduce the volume of water return area, it is favorable to improve water return efficiency and the energy efficiency, water efficiency of cleaning machine, on the other hand, the bottom of recess is directly contacted with heating element, not only it is favorable to improve the heating efficiency of washing water, but also, a small amount of water in recess can be heated to produce steam, dish is prewashed with steam, steam diffuses from bottom to top in tank, need not set up independent air inlet structure, it is convenient for production and assembly, it is favorable to diffusion uniform, eliminate steam pre-cleaning dead angle, improve cleaning effect.

The application relates to a control method of a washing machine and the washing machine, and relates to the technical field of washing machines. The washing machine comprises an electrolytic water program. The control method comprises the following steps: in the electrolytic water program, the PH value of washing water and electrolytic water power are obtained; the electrolytic water rate is determined according to the PH value of the washing water; whether the electrolytic water power and the electrolytic water rate satisfy a preset relationship is judged; and the adjustment time of the electrolytic water power and the adjustment time of the electrolyte concentration are determined according to the judgment result. The adjustment time of the electrolytic water power and the adjustment time of the electrolyte concentration are determined, the electrolytic water power or the electrolyte concentration is reasonably adjusted in the electrolytic water process, the electrolytic water rate is improved, the electrolytic water time is shortened, the electrolytic water efficiency and the sterilization capacity of the electrolytic water solution are improved.

The application discloses an electrolytic water circuit, which comprises an interface circuit, a voltage output circuit, and a feedback circuit. The interface circuit is used for connecting an electrolytic water device. The voltage output circuit comprises an output pin and a feedback pin, wherein the output pin is connected with a first pin of the interface circuit. The feedback circuit is connected with a second pin of the interface circuit, and a second pin of the feedback circuit is connected with the feedback pin of the voltage output circuit, so that a collected feedback signal is fed back to the voltage output circuit through the feedback pin. When the value of the feedback signal meets a preset condition, the voltage output circuit is switched from a current real-time working mode to a target working mode. Through the above circuit, the working condition of the electrolytic water device can be fed back to the voltage output circuit, the working mode of the electrolytic water circuit can be automatically adjusted, and the electrolytic water efficiency is improved.

The utility model relates to the field of farmland irrigation, in particular to an irrigation area farmland irrigation water efficiency inspection device which comprises an irrigation pipe, a flow detection assembly, a soil moisture detection assembly and a control module. According to the utility model, the flow detection assembly and the soil moisture detection assembly are simultaneously arranged on the existing water efficiency inspection device for farmland irrigation in the irrigated area to synchronously detect the irrigation water consumption and the moisture in the soil in real time, and the control module is arranged to summarize and analyze the detected data; according to the system, the irrigation water absorption degree of soil can be better known, the connection module which is remotely connected with the remote terminal equipment is arranged in the control module, detection data can be obtained in real time without the need of a worker to arrive at the site, and therefore targeted measures can be taken for farmland irrigation in time according to the detection data, and the irrigation efficiency is improved. The system has the advantages of being more comprehensive, accurate and intelligent, and the farmland irrigation efficiency and the water resource utilization rate can be remarkably improved.

The present application relates to a kind of COF-316 / Pt@TpBpy-COF composite material preparation and photocatalytic decomposition of water.The present application provides a new COF-316 / Pt@TpBpy-COF composite material, to solve the problem of low light utilization and electron hole easy recombination when existing TpBpy-COF photocatalytic decomposition of water.Method: one, the preparation of Pt NPS;Two, the preparation of COF-316;Three, the preparation of COF-316 / Pt@TpBpy-COF composite material.The preparation process of the present application is simple and effective, reagent consumption is less and performance is high;And the photocatalyst provided by the present application can effectively improve the problem of low photocatalytic decomposition of water efficiency.The present application is applied to the field of photocatalytic decomposition of water, and experiment shows that the composite material has excellent photocatalytic decomposition of water performance, and the decomposition water hydrogen production rate can reach 220.4 μmol·h ‑1 ·g ‑1 Under visible light irradiation, and the oxygen production efficiency is 101.5 μmol·h ‑1 ·g ‑1 .

The invention discloses a water purifier which comprises a raw water inlet, a pure water outlet and a wastewater discharge outlet, the filter unit comprises a shell and a reverse osmosis membrane element arranged in the shell, a raw water port, a pure water port and a wastewater port are formed in the shell, the pure water outlet can be communicated with the pure water port, and the wastewater discharge port can be communicated with the wastewater port; the booster pump is arranged between the raw water inlet and the raw water port, and the booster pump is used for driving water flowing in from the raw water inlet to enter the filtering unit; the water purifier comprises a non-water supply state and a water supply state, the water supply state comprises a first stage and a second stage, in the first stage, pure water filtered by the reverse osmosis membrane element is controlled to flow out from the pure water outlet, and meanwhile, the reverse osmosis membrane element is controlled to discharge no wastewater from the wastewater discharge port. According to the water purifier provided by the invention, the actual water efficiency of the water purifier can be effectively improved on the premise that the TDS climbing prevention effect and the scaling risk prevention effect of the water purifier are not influenced.

The utility model belongs to the technical field of water electrolysis, and particularly relates to a water electrolysis device which comprises a first electrolysis electrode, a second electrolysis electrode, an electrolysis power source and an intermediate conductor, an electrolysis gap is reserved between the two electrolysis electrodes, and the intermediate conductor is arranged between the two electrolysis electrodes as a conductive medium. The electrolysis current between the two electrolysis electrodes is conducted through water in the electrolysis gap and the middle conductor so as to electrolyze the water in the electrolysis gap, and the two electrode carriers can rotate relatively; the utility model further provides an electrolyzed water washing machine using the electrolyzed water device, the first electrode carrier is a washing impeller, and the second electrode carrier is a washing inner barrel. According to the water electrolysis device, the effective electrolysis action area of the water electrolysis device is increased, meanwhile, the problem that bubbles generated by an existing water electrolysis device are prone to being attached to electrolysis electrodes is solved, the water electrolysis efficiency is improved, and therefore the water electrolysis efficiency of the water electrolysis washing machine is improved, and the stain removal and sterilization effects are improved.

The utility model relates to the technical field of electrode shell equipment cooling, in particular to an electrode shell equipment cooling water cooling device which comprises a cooling bin. Two partition plates are fixedly connected to the left end and the right end of the inner wall of the cooling bin, steel plates are fixedly connected to the ends, close to each other, of the two partition plates, and first groove bodies are formed in the upper ends and the lower ends of the steel plates in a penetrating mode. When cooling water flows into the steel plate, heat of the cooling water is transmitted to the heat dissipation fins through the heat conduction strips on the steel plate, and then the heat dissipation fins are subjected to heat dissipation work through starting of the fans on the heat dissipation fins, so that the cooling water is primarily subjected to heat dissipation work; and then the flowing time of the cooling water is prolonged and the contact area during flowing is increased in the cooling water flowing process through the subsequent cooling flowing assembly, so that the work of secondary heat dissipation is achieved, and the problems that the cooling water of the motor shell equipment is low in cooling water efficiency, energy-saving and environment-friendly are solved.

This invention relates to the field of water efficiency testing technology, specifically to an intelligent configuration device and method for water efficiency testing solutions based on water purifiers. The device includes a mixing unit and a water tank. The water tank has a rotating structure, and its interior is vertically divided into an upper zone, a middle zone, and a lower zone. The water tank is equipped with: a circulation pipe, with both ends connected to the upper part of the upper zone and the lower part of the lower zone respectively; a pump body, mounted on the circulation pipe, for pumping the test water from the lower zone back to the upper zone through the circulation pipe; an outlet, located on the side wall of the water tank, with the outlet's horizontal height within the vertical height range of the middle zone; and concentration sensors, one above and one below the outlet, for detecting the concentration of the test water. This invention achieves dynamic control of the test water concentration, avoiding uneven concentrations.

The invention discloses a dripping liquid distribution method for uranium ore dump leaching in an arid region, and belongs to the technical field of uranium mining and metallurgy. The dripping liquid distribution method comprises the following steps: determining the row spacing and the spacing of drippers through an indoor experiment; a drop-leaching network comprising a main pipeline, a branch pipeline, drop-leaching branch pipes and an anti-blocking tail pipe is arranged on the top and the side slope of the ore heap; a variable-frequency pump is used for conveying leaching liquid and cooperates with a butterfly valve and a pressure control valve to regulate and control pressure; sediment is discharged through the anti-blocking tail pipe regularly, and back flushing is carried out to prevent blocking; and monitoring the liquid distribution uniformity and adjusting parameters by using infrared thermal imaging of the unmanned aerial vehicle. The method has the advantages of uniform liquid distribution, water loss as low as 4.7%, water saving, high efficiency, stable system operation, low dripper blockage risk and uranium leaching rate of over 80%, and is suitable for large-scale uranium ore dump leaching operation in drought, high-temperature and intense evaporation regions.

The application relates to the field of new energy and energy-saving technology, in particular to a front mixed water heat exchange device of an improved TOKAMAK test system, which comprises a mixed water heat exchange tank and a jet pump, a rotating injection water distribution mechanism, a shunt cylinder and a heat exchange inclined fin are arranged in the innermost sleeve of the mixed water heat exchange tank. The application is based on the original chilled water and chilled water circuit, a balance cooling water injection circuit is branched from the chilled water, the end pressure of the chilled water main circuit is balanced, the cooling water is pre-cooled, an auxiliary circuit is branched from the cooling water to sufficiently absorb the cold energy of the chilled water in the injection circuit, and the three circuits of the main cooling circuit of the mixed cooling water and chilled water are cooled and mixed through the improved mixed water heat exchange tank. The concentrated water flow of the original device into the water tank is divided into multiple water flows through the triangular weir shunt cylinder, the noise in the operation of the original device is reduced, the reliability of the original device is increased, the mixed water efficiency is improved, and the device is convenient to maintain.

The present invention relates to a membrane pressure water purification device, belonging to the field of water treatment technology. The device comprises a membrane assembly, a pump, and an electrolytic desalination unit. The electrolytic desalination unit comprises a diaphragm electrolytic cell, anode and cathode electrodes, and a power supply for supplying power to the electrodes. The diaphragm electrolytic cell is divided into an anode cell and a cathode cell by a diaphragm. The anode cell's outlet is connected to the membrane assembly's water inlet via a first pipeline. The membrane assembly's concentrate outlet is connected to the anode cell's water inlet and the cathode cell's water inlet via a second pipeline and a third pipeline, respectively. The third pipeline is provided with a wastewater separator. During operation, a portion of the concentrate discharged from the concentrate outlet is combined with tap water through the second pipeline, flows through the anode cell, and then enters the membrane assembly. The remaining portion of the concentrate is passed through the third pipeline, the wastewater separator, and then flows through the cathode cell before being discharged from the cathode cell's outlet. Because the device achieves the recycling and reuse of membrane concentrate, it significantly reduces concentrate discharge and achieves high water efficiency.

This invention discloses a smart integrated water purification system for improving water efficiency, relating to the field of wastewater treatment technology. The invention includes a housing, inside which, from right to left, are arranged a first sedimentation tank, a second sedimentation tank, a third sedimentation tank, and an automatic filtration chamber. A wastewater concentration sensor is installed inside the first sedimentation tank. Siphon pipes are rotatably installed between the first and second sedimentation tanks, and between the second and third sedimentation tanks. Guide posts are provided at the left and right ends of each siphon pipe. A chemical tank is located on the top of the housing. This invention employs a stepped sedimentation tank design, utilizing the siphon principle of the siphon pipes to transport wastewater between adjacent sedimentation tanks. Wastewater is drawn from the upper clear liquid and transported to the bottom of the next sedimentation tank, with chemical dosing completed during the siphon process. This allows the equipment to automatically complete wastewater treatment without any drive mechanism, resulting in low manufacturing costs and simple maintenance.

The invention discloses a simulation method and system for a water effect test of a squatting pan flush valve, and relates to the technical field of intelligent bathroom fluid simulation, and the method comprises the steps: constructing a multi-dimensional parameter matrix, generating an initial sampling matrix through a space filling optimization algorithm, executing fluid dynamic simulation, and forming a training data source; inputting a training data source into the time sequence prediction model, and generating a scouring force three-dimensional distribution field and a transient flow change curve through Fourley Z operator measurement and time convolutional network decoding; on the basis of the scouring force three-dimensional distribution field, calculating a surface cleaning coverage rate value and a minimum shearing force of a key area, establishing a water efficiency evaluation index in combination with a transient flow change curve, and obtaining a parameterized design space of geometric parameters of the groove; furthermore, space-time diagram network nodes are constructed through vortex mark tensors, and high-precision modeling of a scouring force three-dimensional distribution field and a transient flow change curve is achieved.

A motion interrupting water saving faucet valve helps users improve their water efficiency. This is achieved through the use of a soft stop that limits the flow rate of water through a faucet by interrupting the motion of the valve that controls the fluid flow. As a result, there will be multiple different flow rates a user can achieve depending on the needs of a given application. A lower flow rate is the result of the soft stop being engaged through the use of a detent mechanism. The higher rate is the maximum flow rate of a faucet and is easily achieved by a user overriding the soft stop. These different flow rates allow a user to reduce their water consumption because they can now choose between using half or full flow through any given faucet.

The application discloses a purifying and filtering mechanism for hydrogen production electrolysis water, which comprises a treatment box, a liquid inlet pipeline for conveying electrolysis water is connected to the treatment box, a softening treatment assembly is arranged in the treatment box, the softening treatment assembly comprises a conveying cylinder arranged in the treatment box, the conveying cylinder is located at the side end of the conveying pipeline, an inclined hole is formed through the inner wall of the conveying pipeline connected with the conveying cylinder, the input end of the conveying cylinder is connected with a softening agent cylinder through a pipeline, and the output end of the conveying cylinder is connected with the inclined hole. When the electrolysis water flows into the treatment box through the liquid inlet pipeline, the purifying and filtering mechanism for hydrogen production electrolysis water can realize automatic mixing of the softening agent and the electrolysis water, effectively remove calcium and magnesium ions in the water, avoid blockage of hydrogen production equipment caused by scale formation in the later period, prolong the service life of the equipment, and improve the overall electrolysis water efficiency through the input end one-way valve to supplement the softening agent from the softening agent cylinder.

The utility model discloses a uniform and stable automatic water effect standard adding system. Comprising a solution barrel, a first conveying pipe, a pure water source, a metering tank, a standard adding barrel, a second conveying pipe, a solution conveying pipe, a third conveying pipe, a fourth conveying pipe, a conveying pump, a first conductivity sensor, a turbidity sensor, a pH sensor, a temperature sensor, a pressure sensor, a first flow sensor, a to-be-detected water purifier, a water outlet pipe, a second flow sensor and a purified water collecting barrel. More than four solution barrels are arranged in parallel, different solutions are configured in different solution barrels, more than two labeling barrels are arranged in parallel, and a pure water source supplies water to the solution barrels and the labeling barrels respectively. Different solutions need to be prepared in the corresponding solution barrels, then are metered by the metering tanks and then enter the standard adding barrels, the standard solutions are tested after being uniformly mixed, and meanwhile, different water quality monitoring sensors are arranged, so that the water quality can be more accurately controlled to meet the standard requirement, and the detection accuracy and stability are improved.

According to the device for preventing the filtering equipment from generating the rotational flow, when filtered irrigation water enters the filtering net, the irrigation water entering the filtering net has a certain initial angle due to the action of the spoiler outside the filtering net, and the irrigation water can do circular motion along the surface of the inner wall of the filtering net, so that the filtering equipment is prevented from generating the rotational flow; water can form rotational flow under the combined action of self weight, centripetal force, gravitational attraction and suction force of the water pump, the rotational flow can reduce the water pumping amount of the water pump and increase the suction amount of air, the water pumping efficiency of the water pump is reduced, and in severe cases, the water pump cannot pump water in time due to the fact that the water pump sucks too much air, a water pump motor is burnt out, and the service life of the water pump is prolonged. The brake component is additionally arranged in the filter screen, so that the irrigation water can be effectively prevented from forming rotational flow in the filter screen. The brake component is simple in structure, easy to machine, low in cost and capable of effectively preventing rotational flow, so that the failure rate of the water pump is reduced, the efficiency of the water pump is improved, and normal operation of an irrigation system is guaranteed.

The invention provides a dishwasher comprehensive energy efficiency and water efficiency testing device and method.The dishwasher comprehensive energy efficiency and water efficiency testing device comprises a base, a dishwasher body and a visual monitoring unit, an electric control cabinet, a testing cabin and a constant-temperature water tank are sequentially installed on the base from right to left, the dishwasher body is arranged in the testing cabin, and the water inlet end of the dishwasher body is connected with a water inlet pipe; the drainage end of the dish-washing machine body is connected with a drainage pipe, sensor mounting plates are fixed to the upper portions of the inner walls of the ends, close to the dish-washing machine body, of the water inlet pipe and the drainage pipe, and a flow sensor, a temperature sensor and a pressure sensor are sequentially mounted below the two sensor mounting plates from left to right. Compared with the prior art, real water temperature and pressure are simulated through a controllable pipeline, the problems that an original testing device is dispersed in function and cannot simulate real and complex working conditions are solved, and the testing accuracy and the working condition coverage degree of the testing device are improved.

The utility model relates to the field of polishers, and discloses a polisher for water heating equipment production, which comprises an integral support, a lifting mechanism, a gear set, a polishing mechanism and a positioning mechanism, a groove is arranged in a vertical column of the integral support, and the groove of the integral support is in sliding connection with a lifting rod in the lifting mechanism. According to the pipeline polishing device, a flexible polishing mode is provided, fine machining treatment can be conducted on the inner walls of the connecting ends of the two ends of a pipeline, through the design of the polishing assembly and the positioning assembly, the inner walls of the connecting ends of the two ends of the pipeline can be subjected to fine machining treatment, and the machining efficiency is improved. The pipe fitting polishing device is simple in structure and capable of adapting to precise polishing of pipe fittings with different diameters, meanwhile, the inner wall of the connecting end is more regular and smoother after fine polishing, the water passing efficiency of a pipeline can be improved, the service life of the pipeline can be prolonged, the working efficiency can be improved, and a more convenient and efficient solution is provided for a user.

The utility model relates to the field of dust fall spraying, and discloses a dust fall spraying device for a construction site, which comprises a watering cart, and a water tank is arranged at the upper part of a rear side cart plate of the watering cart; the front side of the top of the water tank is provided with a water inlet, the top of the water inlet is in threaded connection with a cover, the middle of the top of the water tank is fixedly provided with two lifting mechanisms, the tops of the lifting mechanisms are provided with an upper frame, the upper frame is of a frame structure, the upper portion of the upper frame is a flat plate, and the bottom of the flat plate is fixedly provided with a servo motor. An output shaft of the servo motor is rotationally connected with the flat plate. The watering cart is provided with two independent watering devices (the spray pipe and the nozzle) which can be controlled respectively, and watering efficiency and flexibility are improved.

The present application relates to a new type of pressure suction type solid-liquid separator and its coal slime water treatment system and method. In order to overcome the defects of the prior art. The new type of pressure suction type solid-liquid separator includes a belt vacuum filter, a pressurizing machine, a first feeding tank, a filter cake turnover mechanism and a second feeding tank. The filter cake turnover mechanism includes a plurality of plow-shaped plates and a crossbeam. Each plow-shaped plate is attached to the upper surface of the filter cloth. A vertical plate is connected to the middle of each plow-shaped plate. The top of the vertical plate is fixed to the crossbeam. The filter cake coming from the upstream of the filter cake turnover mechanism moves with the filter cloth. When passing through the filter cake turnover mechanism, all or part of the filter cake passes through the front end of each plow-shaped plate and turns over under the guidance of the plow-shaped plate. After turning over, the filter cake is mixed with the feed of the second feeding tank and enters the pressure suction dewatering area. The present application can greatly increase the slurry feed quantity, improve the filter water efficiency, reduce the equipment and accidents, and reduce the power consumption, and is suitable for use in coal preparation plants.