255results about How to "Uniform water flow" patented technology

The invention relates to the technical field of aquiculture water processing and discloses an aquiculture integrated water processing unit, which comprises a hopper-shaped pool body (10); a hole plate (22) is arranged at the upper part of the pool body (10); a filter material (20) for light weight foaming grains is arranged on the lower part of the hole plate (22); a communicating hole (41) and aback-flushing air chamber (40) are arranged at the lower part of the conical surface of the pool body (10); an intake pipe (42) and an exhaust pipe (43) are respectively arranged above the pool body;and a screen (21) is arranged at the lower part of the cylinder of the pool body (10). A flushing method for the aquiculture integrated water processing unit is as follows: a discharge pipe (15) is opened and then is closed; the intake pipe (42) is opened for charging air; the water in the back-flushing air chamber (40) is pressed into the pool body (10); when the back-flushing air chamber (40) is filled with air, the intake pipe (42) is closed and the exhaust pipe (43) is opened instantly; then the air is exhausted and the water in the pool body (10) quickly enters the back-flushing air chamber (40); then the filter material (20) downwards expands and looses; and the intercepted suspension solids and aged biomembrane fall into the water and the filter material (20) is flushed. The filtermaterial has high water processing efficiency, good back-flushing effect and low energy consumption.

The invention relates to a filtration-fabric anti-clogging strengthening compound flow constructed wetland domestic sewage treatment system comprising a pretreatment region, a main reaction region andan exhalant region, wherein the pretreatment region comprises a framed tube, an intake pipe, a filter bag, an air inlet pipe and a porous aerator; the main reaction region is formed by connecting a first unit, a second unit and a third unit in series; the bottom of the main reaction region is provided with a gravel water-distribution layer; a biological porcelain granule layer is distributed in the first unit; gravel and a steel slag layer are distributed in the second unit; a zeolite layer is distributed in the third unit; each unit is divided into a left grid and a right grid; the left gridis higher than the right grid; the top of an aquatic plant root region in the left grid is provided with a triangular weir; the pretreatment region and the main reaction region are connected by a perforated water-distribution plate which is arranged at one end of a gravel water-distribution layer; and the exhalant region comprises an exhalent pipe which is arranged at one side of the main reaction region. The invention has the advantages of high pollutant removal rate, stable system operation, greatly improved hydraulic load, small floor area, low operation and maintenance costs, and the like.

The invention relates to a combined defoaming and siphoning well and a combined defoaming and siphoning method. The combined defoaming and siphoning well comprises at least one siphoning well combined body, wherein the siphoning well combined body comprises a vertical well with a water inlet square culvert, a spill pit, an overflow weir, a spill pit and a water conveying square culvert; a diversion pier is arranged between the water inlet square culvert and the overflow weir at the bottom of the vertical well and is opposite to the central axis of the water outlet direction of the water inlet square culvert; the overflow weir is arranged on one side of the vertical well, and the part, adjacent to the top, of the overflow weir is provided with front weir diversion grids arrayed horizontally; at least one vertically-arranged defoaming orifice plate used for dividing the spill pit into two parts is arranged between the overflow weir in the spill pit and the outlet of the water conveying square culvert; the bottom, connected with the water outlet square culvert, of the spill pit inclines downwards. The siphoning well is provided with the diversion pier and the front weir diversion grids, so that the nappe over weir is uniform and stable; the defoaming orifice plate is used for energy dissipation and flow equalization, so that the flowing speed of waterflow after jumping is reduced; the inlet elevation of the water conveying square culvert is reduced, so that bubbles are prevented from entering the water conveying square culvert. By virtue of the measures, the bubble problem of the drainage siphoning well is solved.

The invention relates to a vertical-flow type settling pond for sewage treatment, comprising a water feeding area, a water feeding pipe, an overhaul area, a water collecting area, a filtering area, a settling area, a sludge collecting area and a water discharging pipe. The water feeding area extends from the top of the settling pond into the lower part of the settling pond, the water feeding area is provided with the water feeding pipe, the overhaul area, the water collecting area, the filtering area and the settling area are sequentially arranged around the water feeding area from the top down, the sludge collecting area is communicated with the lower part of the settling area, a water collector which can be regulated according to the water level is arranged in the water collecting area, and the water collector is communicated with the water discharging pipe; and the water collecting area further comprises a filtering water buffering section arranged at the lower part of the water collector. Due to the existence of the filtering water buffering section, water after filtered in the filtering area firstly enters into the filtering water buffering section to be buffered and then enters into the water collector, thus the uniform water discharge at an water discharge part still can be ensured due to the action of the filtering water buffering section even though filtering materials or biological fillers are aggregated.

The invention relates to an anti-blocking pressure compensation water irrigator with a uniform outlet flow and a self-adjusting function. The anti-blocking pressure compensation water irrigator comprises a base, a shell, a pressure compensation gasket and an adjusting needle, wherein the shell is buckled on the base; an inner side wall of the shell is glued with an outer side wall of the base; the pressure compensation gasket is connected with the base; a space encircled by the shell and the base is separated into two chambers; the chamber between the pressure compensation gasket and the shell is arranged as a first chamber; the chamber between the pressure compensation gasket and the base is arranged as a second chamber; a water inlet communicated with the first chamber is arranged on the shell; a water outlet communicated with the second chamber is formed on the base; energy-dissipation runners distributed along circumferential direction are arranged on the outer side wall of the base; runner inlets communicated with the first chamber are arranged at one end of the energy-dissipation runners; runner outlets communicated with the second chamber are arranged at the other end of the energy-dissipation runners; the adjusting needle is located in the second chamber; the root part of the adjusting needle is connected with the pressure compensation gasket and the head part extends to the water outlet.

The present invention discloses a fertilizer-water integrated underground layering irrigation system, which comprises a fertilizer preparing stirring device, a liquid storage pool, a water storage device and an underground layering irrigation device, wherein the fertilizer preparing stirring device and the water storage device are communicated to the liquid storage pool respectively through pipelines, the liquid storage pool is communicated to the underground layering irrigation device, and the underground layering irrigation device is arranged under the soil layer. With the system of the present invention, the waste of the fertilizer during the fertilizer application process can be avoided, the fertilizer application amount can be effectively reduced, the characteristics of high fertilizer application efficiency and uniform fertilizer application are provided, the quantitative irrigation on crops can be achieved, the irrigation belongs to the underground irrigation, the water loss during the irrigation process is effectively reduced, the controllability is good, the requirements of different crops and plants at different growth stages on water can be met, and the effects of water saving and crop growth promotion are achieved.

The invention discloses a multi-adaption pressure-type integral water purifier, which relates to the technical field of water treatment, particularly relates to the problems that conventional small and medium-sized water plants are of complex structures and difficult to manage, and other integral water purification equipment has poor adaptability. The water purifier comprises a feedback-adjustable coagulant feeding device, a folded-plate reaction chamber, a uniform to-be-precipitated water dispenser, an inclined-tube sedimentation chamber, a sludge collection chamber, a sand-filtering chamber, and a connecting pipe or siphon back-washing piping system; and the water purifier is characterized in that the coagulation, precipitation, filtering and sludge disposal of conventional tap water are performed integrally in a pressure type tank; the operations of automatic water production and back washing are implemented by using the connecting pipe or siphon back-washing piping system; the whole water purification process is completed by using the original gravitational potentials of source water; and the discharged water also can be delivered to a high-level clear water reservoir by using original water pressures. The water purifier is manufactured into pressure-type tanks with proper size according to different water production amounts; and the multi-adaptable pressure-type integral water purifier disclosed by the invention is easy to transport, build, manage and low in cost, therefore, the integral water purifier can be used for solving the construction problems of water plants with different headwaters for the country, schools, troops and emergency water supply.

The invention relates to a high-temperature cylindrical compression member test spray cooling system, which comprises a metal support arranged around a cylindrical compression member, an annular secondary water distribution pipe is arranged on the metal support, the whole annular secondary water distribution pipe is of a ring-shaped structure matching the profile of the cylindrical compression member, the annulus of the annular secondary water distribution pipe is horizontal and is arranged coaxially with the cylindrical compression member, a plurality of cooling water nozzles are distributed at intervals along the circumference of the annular secondary water distribution pipe, and the spraying directions of the cooling water nozzles point to the center of the annulus of the annular secondary water distribution pipe and are obliquely upward. The operational stability of the high-temperature cylindrical compression member test spray cooling system is good, no straying and spattering phenomena of water flow occur in the process of a test, almost no deviating flow is produced along the circumferential surface of the cylindrical compression member, and therefore, the cooling effect on the high-temperature cylindrical compression member is good. The high-temperature cylindrical compression member test spray cooling system has the characteristics of simple overall structure, small size, light weight and flexibility and convenience in assembly and disassembly.

A low water temperature high-efficiency heat exchange tube flooded evaporator comprises a housing separated into water inlet and outlet chambers, and a refrigerant liquid storage chamber through a tube plate and the heat exchange tube; a return opening and a liquid level controller are installed corresponding to liquid level of the refrigerant; the heat exchange tube is composed of a parent tube integrated with axial rib which is in radiate uniform distribution along circumference at the outside surface of the parent tube and which has the height as 0.2 to 0.8 time of outside diameter of the parent tube; the housing of the heat exchange tube is allocated in straight tube single water path mode. The technical plan of the invention also comprises: a gas liquid heat exchanger arranged above the housing; an incoming liquid distributor arranged below the housing; and a water segregator arranged at the side of the water inlet chamber. The invention is provide with high rib coefficient heat exchange tube in straight single water path distribution, which enhances heat exchange efficiency of the evaporator greatly with reduced volume and reduced manufacturing cost, so as to meet requirement of water source heat bump using low temperature water from river, lake or sea as water source in winder.

The invention provides a capsizing-resistant hydraulic power type ship elevator with a stable balanced hydraulic driving system. The ship elevator comprises a ship bearing compartment arranged in a lock chamber, a mechanical lifting system and the stable balanced hydraulic driving system, wherein the mechanical lifting system and the stable balanced hydraulic driving system are connected with the ship bearing compartment. The stable balanced hydraulic driving system comprises vertical shafts, float bowls arranged in the vertical shafts, a main water conveying pipe with a water conveying valve, and a plurality of branch water pipes with lower ends connected with the main water conveying pipe. Each branch water pipe is formed by a straight pipe of the lower portion, a corner pipe and / or a branch pipe in the middle, and a straight pipe of the upper portion, wherein the water outlet end of the straight pipe of the upper portion is arranged at the bottom of the corresponding vertical shaft, and an energy dissipater is arranged at the water outlet end of the straight pipe. All the vertical shafts are connected through a water level balance gallery. The ship elevator is characterized in that the stable balanced hydraulic driving system further comprises first resistance balancing parts arranged at the corners of the branch water pipes, or / and second resistance balancing parts arranged on the branch pipes, a circumferential direction reinforcing ventilating mechanism arranged in front of the water conveying valve of the main water conveying pipe, and a pressure stabilizing and vibration damping box arranged behind the water conveying valve of the main water conveying pipe. The ship elevator has a high capsizing-resistant ability.

The invention relates to measuring device and method of the apparent viscosity of saturated sand in a high pore pressure ratio state. The measuring device comprises a model box and an external water box, wherein the external water box can regulate the height of a water surface; a flexible pipe is led from the bottom of the water box and penetrates through an opening positioned at the bottom of the model box to connect with a water outlet pipe inside the model box; a hard board with the opening is placed on the lower part inside the model box; a rigid sphere with both ends hauled by haulage ropes is placed on a horizontal track inside the model box; and the haulage ropes are led out of the model box through a fixed pulley block and connected with a forward and reverse rotating speed-regulating motor. The measuring method comprises the following steps of: enabling the saturated sand inside the model box to be in a super-pore pressure ratio state before liquification by changing a water level of the external water box; enabling the speed-regulating motor to drive the rigid sphere to take horizontal movement on the track, and measuring the speed and the resistance of the rigid sphere; and calculating the apparent viscosity of the saturated sand before the liquification. The invention solves the problem of measurement of the apparent viscosity of the saturated sand in the high pore pressure ratio state before the liquification and has the advantages of easy test operation, high efficiency and low border effect.

The invention discloses an automobile radiator with a reinforced water chamber structure. An arc inner wall is arranged on the cross section of a water chamber, a row of slots distributed along the length direction of the water chamber evenly is formed in each lateral wall in the water chamber, the slots are connected with a transverse partition plate, a plurality of through holes with certain gaps are formed in the partition plate, the water chamber is connected with a main plate with the cross section of an arc structure, an upper semi-circle cavity and a lower semi-circle cavity are communicated through the through holes in the transverse partition plate, and reinforcing ribs are arranged on the outer side of the water chamber. The automobile radiator is high in bearing pressure and good in thermal shock resistance and vibration resistance.

The invention provides a floor brush assembly and a vertical cleaning machine with the same. The floor brush assembly comprises a floor brush base, and a driving motor is arranged at the front end ofthe floor brush base; the driving motor is connected with a rolling brush assembly; a clean water outlet pipeline and a sewage recovery system are also formed on the floor brush base; the sewage recovery system comprises a sewage tank; a sewage tank cover is arranged at the upper end of the sewage tank, the front end of the sewage tank cover inclines towards the middle to form a slope surface, therear side of the sewage tank cover horizontally extends towards the middle to form a horizontal plane, vertical wall surfaces are formed between the slope surfaces on the two sides and the horizontalplane respectively, a sewage inlet is formed in the middle, and drainage angles alpha are formed between the vertical wall surfaces and the sewage inlet respectively. The clean water outlet pipelinecomprises a water storage chamber defined by a floor brush water outlet upper cover plate and a floor brush water outlet lower cover plate, and the water storage chamber is communicated with a water pump. The floor brush assembly is uniform in water outlet, sewage backflow is effectively prevented, secondary pollution is avoided, and user experience is good.

The invention provides a flowing-through type water sterilizing device and a water purifying facility. The flowing-through type water sterilizing device comprises a water inlet, a sterilization cavity, a UVC-LED light source assembly, and a water outlet. The water inlet is arranged in the inlet end of the sterilization cavity. The UVC-LED light source assembly is arranged in the outlet end of thesterilization cavity. The water outlet is connected to the outlet end of the sterilization cavity. The sterilization cavity comprises a reflection sleeve and a cavity shell. Between the reflection sleeve and the cavity shell, a gap is arranged and is filled with air. The UVC-LED light source assembly comprises a fixing seat. An optical lens and a UVC-LED light source module are arranged in the fixing seat. The optical lens is connected to the sterilization cavity so as to isolate the fixing seat and water in the sterilization cavity. The provided device has a better sterilization effect; the utilization rate of deep UV rays is high, the sterilization rate is stable, UVC-LED is taken as the light source, and a radiator is not needed.

The invention discloses a round integrated oxidation ditch. The oxidation ditch is a continuous and enclosed concentric circle like reactor, two rings outside sequentially form an external ditch (10) and an intermediate ditch (8), the liquid surfaces of the external ditch (10) and the intermediate ditch (8) are provided with a stream pushing aeration machine (1), an intermediate ring forms a secondary sedimentation tank (9), the secondary sedimentation tank (9) is internally provided with a mud scraper (4), the circumference wall of the secondary sedimentation tank (9) is provided with a water inflow skirtboard (3), the inner wall of the intermediate ditch (8) is provided with a water distributing hole (5), a mud collecting well (7) is arranged outside the round ring, and the mud collecting well (7) is internally provided with a sludge pump (6). The water distributing hole (5) interval on the inner wall of the intermediate ditch (8) is 300-600mm. The diameter Phi of water distributing hole (5) is 20-30mm. An annular effluent weir is arranged between the inner wall of the intermediate ditch (8) and the secondary sedimentation tank (9). The invention has high aeration oxygenating efficiency, stable running and convenient operation and maintenance, occupying area is small, and flow is simplified and smooth.

The invention discloses a progressive zero-power reaeration system for river channels; a river channel (4) is involved, at least one level of weir plate (1) is mounted in the river channel (4) along awater flowing direction and includes an upper layer and a lower layer, the top edge of each layer of the weir plate is provided with a row of V-shaped saw tooth gaps (2), the height of the lower layer of the weir plate corresponds to the low water level of river, and the height of the upper layer of the weir plate corresponds to the normal water level of river. The problem of black and odorous water due to low content of dissolved oxygen in rural small-slope inner rivers at present is solved, good reaeration is provided for river water, the failure of aerobic decomposition of organics due toinsufficient dissolved oxygen in the rural inner rivers is overcome, and the progressive zero-power reaeration system for river channels is simple in structure, convenient to mount and low in cost.

The invention relates to an instantaneous hot faucet and gas water heater linkage water-saving system which comprises a gas water heater and an instantaneous hot faucet with an electric heater. The instantaneous hot faucet comprises a water outlet pipe and a switching switch. The water outlet pipe is respectively connected with a tap-water pipe and the gas water heater. The electric heater is arranged in the water outlet pipe, and a first temperature sensor is arranged between the switching switch and the gas water heater. The electric heater comprises a sealing sleeve, an electric heating unit, a heat insulation layer, a water inlet unit and a water outlet unit, wherein the electric heating unit, the heat insulation layer, the water inlet unit and the water outlet unit are arranged in the sealing sleeve. The water inlet unit and the water outlet unit are arranged at the two ends of the electric heating unit respectively. The heat insulation layer sleeves the electric heating unit, the sealing sleeve is provided with a temperature display screen and a control circuit with a temperature control sensor. The control circuit controls power of the electric heater according to the difference between a temperature collected by the temperature control sensor and a set temperature. Compared with the prior art, the instantaneous hot faucet and gas water heater linkage water-saving system can achieve the goals of water saving and comfort and have great significance in energy saving and emission reduction.

The invention discloses a biological method treating device of multi-ply drawer type cultivating water, which relates to water, waste-water or sewage water biological method treating. The invention is characterized by the following: there is a cabinet type box with top-down multi-ply drawer pore passages; the drawer with four walls and floor is installed in every drawer pore path; the drawer is filled with floating culture water and extender including active carbon, coral sand, fluorite, ceramic ring, biological ball; there is a exhaust pipe at the end of the drawer; the upper front end of every drawer pore passage installs supply pipe with water jet; many supply pipes are connected and then connect to culture water collecting box through make-up pump; the cabinet type box seat is in water bath of water drain.

The invention provides a MBR membrane element support plate. The support plate comprises a fixing device and a water discharge device arranged at edges of the support plate, and a groove channel communicated with the water discharge device. The groove channel comprises several support blocks provided with grooves on positive and negative surfaces, support strips connected to the support blocks and a hollow area located between the support strips and communicating the grooves. The boundary of the groove channel is provided with a welding line. The MBR membrane element support plate solves the problem that the existing MBR film has unstable transmembrane pressure difference and the whole panel has water discharge nonuniformity because of film pollution blocking.

The invention relates to a diatomite reactor device. An outer shell (1) of the device is composed of an upper octagonal column body and a lower octagonal cone body, eight supporting columns (2) are arranged on the eight corners of the outer side of the octagonal column body for supporting, gutters (9) are horizontally formed in the inner side of the upper octagonal column body of the outer shell (1) along the circumference, at least four stand columns (4) are arranged on slopes of the lower octagonal cone body of the outer shell (1), hollow cylinders (5) are fixedly connected to the top ends of the stand columns (4), the internal area defined by the stand columns (4) and the hollow cylinders (5) is a flocculation chamber (6), the external area defined by the stand columns (4) and the hollow cylinders (5) is a clarifying chamber (7), an ultrafiltration layer (20) is arranged in the clarifying chamber (7), a unit weir groove net (8) is arranged on the top of the clarifying chamber (7), a gradually-expanding guide cylinder (10) is arranged in the flocculation chamber (6), the bottom of the gradually-expanding guide cylinder (10) is connected with a water inlet pipe (11) which is connected with a pipeline mounted pump (12), sludge buckets (13) are arranged on the middle-lower portions of the slopes of the clarifying chamber (7), sludge discharging pipes (14) are connected in the sludge buckets (13), and the sludge discharging pipes (14) are connected to a sludge storage pool, and a return pipe (15) is arranged at the inner bottom of the device and connected to a biochemical pool anoxic zone. The diatomite reactor device is simple in structure, good in sewage processing effect, small in occupied space, low in investment and attractive and elegant in appearance.

The invention discloses a microcystis aeruginosa research device which comprises a water tank, a motor and a lighting system, wherein the water tank is in the shape of an annular column with an upward opening; the motor is arranged in the center of circle of the water tank; an output shaft of the motor is provided with vertical supporting beams; the top ends of the supporting beams are provided with horizontal suspension arm beams; water pushing sheets are arranged below the suspension arm beams and extend into the water tank; and the lighting system is arranged at the periphery of the water tank. The device has the characteristic that a water body has basically consistent flow velocity during an experiment.

The invention discloses a super high-speed quenching device for a steel tube and relates to a cooling device. The quenching device comprises a shell with water inlets; a plurality of inclined seam nozzle units are arranged in the shell and are pressed against each other in parallel; gaps are reserved between the shell and the inclined seam nozzle units and are cooling water layers; each inclined seam nozzle unit has an annular structure, and sequentially consists of a water guide plate, a flow stabilization layer wall plate and a nozzle adjustment sleeve plate from exterior to interior; a plurality of water guide columns are uniformly distributed on the circumference of each water guide plate; the extension lines of the water spraying directions of all the water guide columns are intersected to form an inscribed circle, and the diameter of the inscribed circle is less than or equal to that of the steel tube to be cooled; the water guide columns of the adjacent inclined seam nozzle units are staggered; an inner cavity which is formed by the flow stabilization layer wall plates has a shape of a funnel with a wide exterior and a narrow interior; each nozzle adjustment sleeve plate is annular; gaps between the nozzle adjustment sleeves plates are inclined seam nozzles; the inclined seam nozzles are inclined seams of which the width is gradually reduced from exterior to interior.

The invention discloses a kilowatt-level optical fiber cladding power stripper employing micro-channel water cooling, and the stripper comprises a heat sink. The heat sink comprises a housing and a lining part disposed in the housing. The housing is provided with a cooling water inlet and a cooling water outlet. The outer wall of the lining part is provided with a spiral groove, and two ends of the spiral groove are respectively communicated with the cooling water inlet and the cooling water outlet. The lining part is provided with a central through hole which is used for the passing of an optical fiber. The stripper employs a mode of micro-channel water cooling for heat dissipation. During the stripping of cladding optical power, the stripper can improve the temperature performance and characteristics of cladding optical power. Compared with a conventional optical fiber cladding power stripper, the stripper can improve the uniformity of heat dissipation, is higher in withstood stripped optical power, meets the requirements of 1000W stripped optical power, is simple in structure, is low in manufacture cost, and is suitable for batch production.

The invention discloses a combined lifting type raft culture device. The combined lifting type raft culture device comprises ropes which are connected in a gridding shape, wherein the manropes of working portions of the roes are symmetrically distributed. Two groups of cultural lifting ropes which are symmetrically distributed between the manropes are connected with air-filled floating pipes, and the air-filled floating pipes are parallel to the manropes. Air-filled buoys are connected through flexible pipes, and end portions of the manropes are connected with floating balls. Due to the fact that the air-filled buoys are arranged at two ends of each manrope and are combined with pulling of densely distributed cultural lifting ropes with the same length , the combined lifting type raft culture device achieves that the air-filled floating hoses are parallel to the manropes, conducts air filling or water injecting operations on the air-filled floating pipes through the air-filled floating buoys, enables the air-filled floating pipes to independently ascend and descend so as to achieve illumination control of the cultural objects in a natural sea area and possess a certain anti-wave effect. The combined and lifting raft culture device has the advantages of being firm in structure and stable in space state, possesses the certain anti-wave effect, can achieve manual illumination adjustment in the natural sea area and is simple in craft and low in cost.

The invention relates to an earth and rockfill dam for simulating a piping dam break test. The earth and rockfill dam comprises a dam body which is built by rock materials, wherein a weak layer capable of generating a piping channel is laid at a set position of the dam body according to the test requirement; a water pipe which penetrates through the dam body is arranged in the weak layer; through holes which are distributed along the axial direction at intervals are formed in a pipe wall of the water pipe; and the water pipe which is positioned at the upstream end of the dam body is provided with a valve. During test, water is injected into the water pipe so as to wash the weak layer, so that the formation of piping channel inside the dam body is simulated and accelerated. The field piping test development time can be controlled, and the phenomena that the field test fails even an unexpected sudden dam break event occurs and losses of life and property are caused because the piping channel formation time cannot be controlled are avoided.

The invention relates to an earth and rockfill dam piping burst process field test method. According to the method, a weak layer is preset in a dam body, a porous pipe is buried in the weak layer to form a piping channel, and the dam is facilitated to form piping burst. According to the method, the phenomenon that a stable seepage channel cannot be formed in the dam and the piping burst cannot be formed is effectively avoided during test, and the phenomena that the field test fails even an unexpected sudden dam break event occurs and losses of life and property are caused because the piping channel formation time cannot be controlled are avoided. The test success rate is improved, and complete test data is ensured. According to the related method, the field piping test development time can be controlled, and the method has important values for improving the large-scale field piping test success rate and mastering the earth and rockfill dam piping burst mechanism and has important significance for pushing the development of the domestic dam break hydraulics discipline.

The invention provides a robot control method and device and a robot. The control method comprises the steps: collecting motion parameters of the robot in a cleaning task; and according to the motionparameters of the robot, controlling the execution and stop of the water pumping action of the robot. According to the robot control method and device and the robot, the water pumping action of the robot is controlled to be executed and stopped according to the motion parameters of the robot in the cleaning task, so that it is guaranteed that the robot discharges water uniformly in the cleaning task, and the cleaning effect is improved.

The invention discloses a small cement mixing machine which comprises a motor and a mixing barrel. The mixing barrel is fixed to a machine frame. A mixing shaft is arranged in the mixing barrel and extends out of the mixing barrel. One end of the mixing shaft is driven by the motor to rotate, and the other end of the mixing shaft is connected with a manual handle. The top of the mixing barrel is provided with a cement inlet. An annular water inlet pipe is arranged in the cement inlet and connected with an external water inlet header pipe. The annular water inlet pipe is provided with multiple nozzles. The mixing shaft is provided with multiple mixing plates. The upper side and the lower side of each mixing plate are each connected with a mixing rod shaft. The mixing rod shafts are obliquely arranged on the mixing plates. The bottom of the mixing barrel is provided with a discharge outlet. According to the small cement mixing machine, the mixing shaft can be electrically controlled to rotate and can also be manually rotated; the annular water inlet pipe is provided with the multiple nozzles, so that water drainage is uniform, and cement and water are sufficiently mixed to be uniform; and the mixing plates are rotated to produce annular cutting force, the mixing rod shafts on the upper side and the lower side of each mixing plate produce oblique cutting force, and therefore cement, gravel aggregate and water are sufficiently mixed to be uniform.

The invention discloses a water outgoing device capable of forming a hollow water curtain. The water outgoing device comprises a hollow shell and a diversion column inserted into the shell, an annular runner is formed between the shell and the diversion column, a plurality of arc-shaped water incoming grooves are formed in the shell and are in an annular array taking the annular runner as a center, the inner end of each arc-shaped water incoming groove is communicated with the annular runner, and water flows into the annular runner along the arc-shaped water incoming grooves to form the hollow annular water curtain with centrifugal force. When tangential centrifugal force of the water guided along a lower-portion flowing section is greater than surface tension of the water, the water is broken after certain length of the water curtain is maintained to be granularly scattered to form continuous water sprays within a certain range, the water sprays are wide in shower range, and a single granular water spray is good in granular sensation.

The invention provides a water activator which radiates a large quantity of anions and far-infrared rays and refines water containing a mount of mineral component. Three chambers (13, 15, 17) in vertical series on water stream (11c) are obtained by dividing a cylindrical body (11) of the water activator (10) and a corresponding anion radiation ceramics 12, far-infrared radiation ceramics 14 and medical stone ceramics 16 are accommodated in the case body 1, so that the anion and far infrared ray can be radiated to the water on the water stream (11c) and the mineral component can be digested. Thus the active water of high quality can be refined.