60results about How to "Adjust flow rate" patented technology

The invention relates to a device for treating, especially styling, hair, comprising: a receptacle (25) containing a product to be applied, said product being contained in the receptacle in a fluid state; two jaws (3, 4) that are movable in relation to each other and can adopt a spread configuration for the insertion of a lock of hair therebetween and a closed configuration for treating the lock of hair, said jaws (3, 4) being movable along the lock of hair in said closed configuration; an application body (23) for applying the cosmetic product, carried by one of said jaws and suitable for coming into contact with the hair in the closed position; and a steam outlet (21) on the other one of said jaws, for exposing the hair engaged in the device to the steam.

The invention provides a chemical-looping combustion device which is characterized by comprising an air reactor fluidized bed and a cyclone separator connected with the air reactor fluidized bed, and a fuel reactor with a screw feeder at the lower end on the side face is connected with the cyclone separator via a first flowing seal valve; and the upper port of a material return pipe is connected with the fuel reactor via a second flowing seal valve, and the lower port of the material return pipe is connected with the air reactor fluidized bed. The invention also provides a use method of the chemical-looping combustion device, which is characterized in that when a solid fuel is used, the fuel is added into the screw feeder at a constant speed, and water vapor and / or CO2 is introduced from a port C below an air distribution plate of the fuel reactor; when a gas fuel is used, the gas fuel is directly introduced from the port C; and the flowing speed of oxygen carrier particles on a grid plate is adjusted by adjusting the inclination degree of the grid plate. The device provided by the invention can flexibly and effectively control the residence time of the particles in the fuel reactor, the reaction speed is increased, and good separation between the solid fuel and the oxygen carrier can be realized.

The invention discloses a method and a device for preparing a hexafluoropropylene oxide oligomer. The device comprises a pipeline reactor, a liquid phase separation tank connected with the pipeline reactor, and a gas-liquid separation tank connected with the liquid phase separation tank, the pipeline reactor comprises a spiral pipeline filled with a filler, the spiral pipeline spirally extends vertically, a gas-liquid contact port is arranged at the upper end of the spiral pipeline, a the hexafluoropropylene oxide and catalyst mixed solution enters the pipeline reactor through the gas-liquid contact port, and flows from the upper end to the lower end along the spiral pipeline, a hexafluoropropylene oxide oligomer generated in the pipeline reactor flows into the liquid phase separation tankand realizes layering, a discharge valve is arranged at the outlet of the liquid phase separation tank, and the flow rate is controlled by the discharge valve to make the weight of the product flowing into the gas-liquid separation tank consistent with the weight of the product deposited in the liquid phase separation tank. The method and the device can increase the yield of hexafluoropropylene oxide oligomer.

The invention relates to a macroporous adsorbing resin automatic regeneration device, which comprises a regeneration resin tank, a spectrograph, a conductivity meter, a blowdown electromagnetic valve, a sewage collecting tank, a regeneration liquid electromagnetic valve, a regeneration liquid storage tank, a backflushing water electromagnetic valve, a backflushing water tank, a control box, a backflushing water guide pipe, a regeneration liquid guide pipe and a water drain pipe, wherein the regeneration resin tank is used for containing macroporous adsorbing; the spectrograph is an online spectrum COD (chemical oxygen demand) detection device, and is used for detecting the COD concentration in real time, and transmitting the data to the control box; the control box is used for controlling the blowdown electromagnetic valve, the regeneration liquid electromagnetic valve and the backflushing water electromagnetic valve. The macroporous adsorbing resin automatic regeneration device has the advantages that the COD concentration of regeneration liquid at an outlet of the regeneration resin tank is detected in real time; meanwhile, the control box can adjust the flow rates of the regeneration liquid and backflushing water according to the concentration, so as to prevent the excessive use of the regeneration liquid and the backflushing water, and reduce the operation cost.

The present relates to ship equipped with thermal energy recovery means and related process. The present invention particularly relates to a ship equipped with: - at least one diesel engine (1) of which some internal parts (11A, 12A), even external parts, are cooled by a first so-called high-temperature liquid cooling circuit, whilst others (13B, 14B, 15B) are cooled by a second so- called low-temperature liquid cooling circuit, these circuits differing by the difference in temperature of the liquid entering said engine (1), - at least one item of equipment, separate from said engine (1), which consumes thermal energy, - recovery means (2) to recover at least part of the calories conveyed by the liquid in the high-temperature circuit, to supply heat to said equipment. It is noteworthy in that it further comprises recovery means (3) to recover at least part of the calories conveyed by the liquid in the low-temperature circuit, to supply heat to said equipment. The invention can greatly improves the energy balance for ships.

The invention relates to a double heat type vibration laminar-flow grain dryer. Currently, a vertical grain drying tower is commonly used for grain drying in the world. The heat source of the vertical grain drying tower generally is coal, fuel oil, burning rice husks or straws; a burning material combusts in a hot-blast stove and generates hot wind which is introduced into grain piles to dry grains; and such a drying manner has considerable disadvantages. The double heat type vibration laminar-flow grain dryer provided by the invention comprises a box (1) equipped with a damping device; the box is provided with an air inlet (2), an air outlet (3), a feed inlet (4) and a discharge outlet (5), a vibrating material bed (6) is arranged in the box, a material chamber is arranged above the vibrating material bed, and the feed inlet and the discharge outlet are communicated with the material chamber. The double heat type vibration laminar-flow grain dryer is used as a grain dryer or a rice airing machine.

The invention relates to a power battery cooling and heating integrated system, which comprises a cooling liquid tank, a circulating pump, a radiator and a battery pack heating and cooling integrated board, wherein the cooling liquid tank is connected with the circulating pump; the circulating pump is connected with the radiator; and one end of the battery pack heating and cooling integrated board is connected with the radiator and the other end of the battery pack heating and cooling integrated board is connected with the cooling liquid tank. The power battery cooling and heating integrated system has the advantages that one set of substrate is shared by a heating system and a cooling system, the power battery cooling and heating integrated system is long in service life, good in stability, good in heating and cooling effects, high in integration level, convenient to use and high in heat utilization rate, and the power is saved.

The invention relates to an earthen ruins dedicated wind erosion simulation device composed of a wind source processing system, a wind speed measurement system, a wind speed control system and a sand dust filling component. A wind speed measurement module, a wind speed control module and a fan of a wind source processing module are connected together to form a sub assembly; a sand-loading bucket module and a steady flow net, a shrinkage port, a honeycomb and a wind outlet of a wind source processing module are connected together to form a sub assembly. During testing, the two sub assemblies are connected through a wind supply hose pipe. Through simulation of different wind speeds and sand-carrying wind, natural wind and sand storm special weather wind erosion effects are simulated, the destructive effect of earthen building ruins under the action of wind erosion is further researched, a large field test is effectively achieved, and a positive promoting role in scientization and standardization development of earthen ruins protection researches is achieved.

The invention relates to a shell and tube type sewage heat exchanger, in particular to a shell and tube type sewage heat exchanger convenient to clean. The shell and tube type sewage heat exchanger comprises a shell and a heat exchange pipe bundle. A sewage inlet and a sewage outlet are manufactured in the shell. A detachable clean water end socket is installed at the end of one side of the shell. The heat exchange pipe bundle capable of being taken out is installed in the portion, on the inner side of the clean water end socket, of the shell in an embedded mode. A pipe bundle end plate is installed between the clean water end socket and the end of the shell in an embedded mode. An end socket partition plate is installed between the pipe bundle plate and the clean water end socket. A water outlet cavity of one side of the end socket partition plate is respectively communicated with a clean water outlet and one end, embedded in the pipe bundle end plate, of the heat exchange pipe bundle, and a water inlet cavity of the other side of the end socket partition plate is communicated with a clean water inlet and the other end, embedded in the pipe bundle end plate, of the heat exchange pipe bundle. A detachable end socket is installed at the end of the other side of the shell. According to the shell and tube type sewage heat exchanger, the clean water end socket and the sewage end socket can be disassembled according to the actual situations, and the shell and the heat exchange pipe bundle can be cleaned.

The invention discloses a dosing device convenient for medical oncology nursing. The dosing device comprises a dosing U-shaped plate; a mounting shell is fixedly mounted on the rear wall of the dosingU-shaped plate; mounting suction cylinders are fixedly mounted at two ends of the bottom surface of the mounting shell, and a suction mounting mechanism is arranged in the mounting shell and the mounting suction cylinders; the suction mounting mechanism comprises a bearing pedestal fixedly mounted in the mounting shell; a rotating rod is rotatably mounted in the bearing pedestal in a penetratingmode; the two ends of the rotating rod are sleeved with first bevel gears correspondingly; and the bottom wall of the mounting shell and the top walls of the mounting suction cylinders are rotatably provided with the same threaded rod in a sealed mode. A negative pressure environment is formed in a suction cup by rotating the rotating rod, so that the suction cup is connected with the skin, the dosing U-shaped plate is prevented from being separated in the dosing process, medical staff do not need to hold the dosing U-shaped plate for dosing for a long time, the working intensity of the medical staff is reduced, the flow speed is adjusted by controlling the rotating speed of a motor, and different requirements can be met.

The invention relates to a thermal insulation structure foundation of a molten salt storage tank, belonging to the technical field of solar power generation. The invention consists of a deformation-resistant structure, a thermal insulation structure, and a reinforced concrete bottom plate from top to bottom, the steel ring wall is placed on the reinforced concrete bottom plate, and the thermal insulation structure is compacted ceramsite with good gradation, which can follow the steel ring wall to reach high temperature. The deformation-resistant structure is a dry sand layer with a slope close to the lower surface of the tank bottom plate, which can convert the sliding friction generated by the displacement of the storage tank bottom plate when thermal deformation occurs into rolling friction; the reinforced concrete bottom plate is embedded with air The cooling pipe can reduce the temperature of the concrete floor and avoid high temperature deformation and cracking. The invention adopts thermal insulation measures, a deformation-resistant structure and a heat-dissipating structure, and realizes the functions of not only keeping the medium in the storage tank warm, but also resisting high-temperature deformation and pressure bearing, and avoiding the excessive settlement of the molten salt storage tank and the undesired failure of the foundation. The inclination or instability of the storage tank caused by the uniform settlement may even lead to secondary hazards such as the rupture of the storage tank.

A sewage treatment device provided with a magnetically strengthened MBR (membrane bioreactor) comprises a cylindrical casing provided with an upward opening, static magnets, magnetic coil props, magnetic coils, a cylindrical MBR membrane assembly, a scavenging conduit, an aeration pump and a suction pump, wherein an accommodating cavity is formed in the cylindrical casing; the static magnets, themagnetic coil props, the magnetic coils, the cylindrical MBR membrane assembly and the scavenging conduit are arranged in the accommodating cavity; a ring-shaped clamp groove which is concave downwards is formed in the bottom of the accommodating cavity; at least two magnetic coil props are arranged and uniformly distributed on the ring-shaped clamp groove; the magnetic coils are clamped in bayonets of the magnetic coil props. The sewage treatment device has the advantages as follows: 1, by means of the magnetization effect of a magnetic field, a water molecule structure is changed, water molecular viscosity of sewage is reduced, water molecule activity is improved, difficulty of water molecules passing the MBR membrane is reduced, and membrane pollution is reduced; 2, with the adoption ofthe static magnets and the magnetic coils which can be increased or decreased, strength and direction of magnetic action on the sewage in the device are adjusted, and meanwhile, the magnetic coils can be taken as magnetic conductive rings, so that magnetic force loss is reduced and the magnetic field with uniform magnetic force is manufactured.

The invention discloses a uniform material spraying type reaction kettle. The uniform material spraying type reaction kettle comprises a tank body, an upper cover, a motor, a rotary shaft, an impeller, an isolation cover, a pressure equalizing pipe, a ventilation cap and a material spraying mechanism; when the uniform material spraying type reaction kettle works, reaction liquid is input through a liquid inlet connector; the motor drives the impeller to rotate through the rotary shaft, so that the reaction liquid is stirred; meanwhile, powder falls into a material mixing pipe through a material collection funnel and compressed air is pumped in through a blowing pipe; the high-pressure air is used for blowing out the powder falling from the material collection funnel through a second material leaking hole formed in the material mixing pipe and a first material leaking hole formed in a main pipe in sequence; the powder in the tank body is dispersed and falls off due to gravity; the reaction liquid and the powder are uniformly mixed under the stirring of the impeller. The device is simple in structure and can be used for automatically dispersing and spraying out the powder, so that the powder is uniformly dispersed; the powder and the reaction liquid are sufficiently mixed through mechanical stirring and the reaction efficiency is improved; meanwhile, the utilization rate of the powder is improved.

The invention discloses an immobilized microbial cell method for converting ganglioside, which can specifically convert ganglioside so as to generate monosialoganglioside (GM1) and solves the problem that acid hydrolysis has low conversion rate and easily generates inactive monosialoganglioside and simultaneously solves the problem that in an non immobilized microbial cell method, medium components or microbial metabolite impurities are easily mixed into the monosialoganglioside. After cells are fixed with fibroin gel, a columnar type reaction bed is filled; the ganglioside to be converted reversely flows through a packed column and is converted into GM1.

The invention relates to the technical field of material production, in particular to equipment and a method for preparing tantalum alkoxide. The preparation equipment provided by the invention comprises a preparation equipment main body, four connecting ports are formed in the top of the preparation equipment main body, the top of one side of the preparation equipment main body is connected with first evaporation equipment through a guide pipe, and the top of the other side of the preparation equipment main body is connected with second evaporation equipment through a first condenser; a second condenser is arranged on one side close to the first condenser, one end of the second condenser is connected to the top of the preparation equipment main body, and the other end of the second condenser is connected with third evaporation equipment, so that the problems that tantalum alkoxide prepared in the prior art is easy to contact with air, low in product quality and low in yield are solved.

The invention relates to the technical field of heat exchangers, in particular to a spray tank type heat exchanger and a using method thereof. The spray tank type heat exchanger comprises an outer barrel-shaped shell and a shaft core arranged inside the shell. A spiral coil pipe winding on the shaft core is arranged between the shell and the shaft core. A cooling medium flows in the spiral coil pipe. The cooling medium enters through a coil pipe inlet formed in the lower portion of the shell and flows out through a coil pipe outlet formed in the upper portion of the shell. A refrigerant flows through the space between the interior of the shell and the exterior of the spiral coil pipe, and the refrigerant enters and flows out through a condenser inlet / outlet structure or enters and flows out through an evaporator inlet / outlet structure. The spray tank type heat exchanger can be applied as a condenser as well as an evaporator, an independent evaporator is omitted, thus, a connection circuit structure is simpler, the heat exchange cost is reduced, and the heat exchange efficiency is improved.

The invention discloses a butterfly-shaped extrusion mold for producing flat-width thin-wall multi-cavity aluminum profiles. A butterfly-shaped upper mold is arranged as a multi-stage arch-shaped arcsurface divergent bridge, the radius of the arch-shaped divergent bridge is 150-200 mm, the arch-shaped divergent bridge sinks by 10-20mm along the butterfly-shaped upper mold end surface, and a maindivergent bridge at the center position continues to sink by 10-15mm so as to reduce stress of the mold in the extrusion process; and a butterfly-shaped lower mold is designed to be provided with two-stage welding chambers with a butterfly-shaped contour, the height of a first-stage welding chamber and the height of a second-stage welding chamber are 15-25 mm and 5-10mm. According to the butterfly-shaped extrusion mold, a stop block can be additionally arranged in the second-stage welding chamber, so that the flow rate of a material can be adjusted, the welding quality can be improved, the flat-width thin-wall multi-cavity aluminum profiles with geometric shape and good welding quality can be produced, so that the service life of the extrusion mold is effectively prolonged, and the extrusion production energy consumption is reduced.

The invention provides a device for recovering bulk of nonwoven cloth, and a method for recovering bulk of nonwoven cloth, and the flow sped of hot wind is properly adjusted. A device for recovering bulk of nonwoven cloth by blowing hot air on and heating a nonwoven cloth conveyed in a conveying direction, wherein said device has a case member open on both conveying-direction ends, the opening on one conveying-direction end of the case member being provided with an inlet for use when the nonwoven cloth is conveyed, and the opening at the other conveying-direction end of the case member being provided with an outlet for use when the nonwoven cloth is conveyed. The portion on the inlet side of the case member is provided with an injection port via which the hot air is injected into the space inside the case member toward the portion on the outlet side. The sectional area of the space inside the case member in a first position on the downstream side in the conveying direction from the position at which the injection opening is provided is larger than the sectional area of the space inside the case member in a second position between the position at which the injection opening is provided, and the first position. The hot air injected via the injection port flows from the upstream side in the conveying direction to the downstream side in the conveying direction via the first position and the second position, while contacting one of the two surfaces of the nonwoven cloth in the space inside the case member.

The invention discloses a cylinder body full core assembly pouring system and relates to the technical field of casting of castings. The system comprises a transverse pouring gate, a sprue and a slowflow filtering cavity. Slow flow channels are symmetrically connected to the discharging side of the bottom of the sprue. Discharging openings of the slow flow channels are connected with the transverse pouring gate through the slow flow filtering cavity. A sprue nest is arranged at the bottom end of the sprue. The cylinder body full core assembly pouring system has a good metal liquid filtering function, and is provided with a reasonable slag storing cavity structure, the cross section changes smoothly, and metal liquid is guided smoothly.

The invention discloses a lithium extraction system driven by salinity difference. The lithium extraction system comprises a strong brine cavity, a common seawater cavity and an anion exchange membrane, wherein the strong brine cavity is filled with strong brine, and the common seawater cavity is filled with common seawater; the anion exchange membrane is arranged between the strong brine cavity and the common seawater cavity, and anions can flow between the strong brine cavity and the common seawater cavity through the anion exchange membrane; a lithium element adsorption electrode immersed in the strong brine is arranged in the strong brine cavity; an electrode plate immersed in the common seawater is arranged in the common seawater cavity; and the lithium element adsorption electrode isconnected with the electrode plate through a wire led out of the electrode plate. The lithium extraction system has the beneficial effects that the salinity gradient energy is used as driving energyto realize cation enrichment so as to accelerate the absorption of the lithium element, and other high-grade energy does not need to be consumed additionally; and the salinity gradient energy serves as the unique driving energy, and no high-quality energy is consumed, so the system is low in cost and can be used for industrial continuous lithium extraction.

The invention discloses an LTCC substrate with high thermal conductivity and a manufacturing method thereof. According to the substrate, a sealing cover plate is arranged below an IC chip; a columnargroup is arranged at the lower part of the sealing cover plate; the whole sealing cover plate is made of a high-heat-conductivity material; the heat of the chip is transferred to the cooling liquid inthe channel through the sealing cover plate; according to the structure, heat of a heat source can be quickly and effectively transferred to a heat transfer path of fluid; circulating interconnectionof the substrate fluid channel and external fluid is achieved, the heat dissipation performance of the LTCC substrate is greatly improved, an active heat dissipation method is provided for a high-power SiP circuit and a radio frequency microwave module circuit, and important social benefits and economic value are achieved.

The invention relates to a preparation method for separating high-purity hispidulin and herba lycopi flavone from common sage herb by high-speed countercurrent chromatography. The preparation method comprises the following steps of: (1) preparing a proper solvent system and standing to laminate so as to obtain an upper phase and a lower phase; (2) selecting the upper phase as a stationary phase and the lower phase as a mobile phase, filling the fixed phase into a countercurrent chromatograph column, adjusting the rotating speed of a host to be 600 to 1,000 rpm, pumping the mobile phase into the column at the flow velocity of 0.5 to 5.0 ml / min, and performing sample introduction by a sample valve after the whole system establishes dynamic balance; and (3) receiving target components according to a detector ultraviolet spectra, concentrating and crystallizing to obtain the high-purity hispidulin and herba lycopi flavones. The method is applicable to various types of high-speed countercurrent chromatographs and preparation of calycosin with different content, and has the characteristics of large separation quantity, high recovery rate and simpleness and convenience of operation.

The invention provides an energy-saving sewage treatment device, which belongs to the technical field of sewage treatment and comprises a sewage treatment tank body, a sewage treatment cavity is arranged in the sewage treatment tank body, a first cavity wall and a second cavity wall are arranged in the sewage treatment cavity along the flowing direction of sewage treatment, and a partition plate is arranged between the first cavity wall and the second cavity wall. One end of the partition plate is connected with the first cavity wall, a gap is formed between the other end of the partition plate and the second cavity wall, and a sewage inlet and a sewage outlet are formed in the two sides of the partition plate respectively; the dosing structure is mounted in the sewage treatment cavity, the dosing structure comprises a medicine storage barrel, and a medicine release hole and a fixing bracket for fixing the medicine storage barrel are formed in the medicine storage barrel. According to the sewage treatment device, the dosing structure is installed in the sewage treatment cavity, sewage disinfection and purification treatment are achieved, in addition, according to the dosing mode in the dosing structure, the position of dissolved solid tablets in the lower-layer space is automatically filled with the upper-layer solid tablets under the gravity effect, and unpowered dosing is guaranteed.

The invention discloses a clinical oxygen heating and humidifying device for pneumology department nursing, relates to the technical field of nursing, and mainly aims at solving the problem that an existing device is poor in heating and humidifying effect. The device comprises a heating and humidifying tank, an oxygen inlet pipe and an oxygen outlet pipe, and further comprises: a hollow shaft, which is installed on the heating and humidifying tank, has one end extending to the bottom of an inner cavity of the heating and humidifying tank and the other end penetrating through the top of the heating and humidifying tank and extending upwards, wherein one end of the oxygen inlet pipe is connected with external oxygen supply equipment, and the other end of the oxygen inlet pipe is communicated with an inner cavity of the hollow shaft and rotationally connected with the inner cavity of the hollow shaft; a dispersing part, in which a plurality of dispersing holes are formed, is connected with the end, located at the bottom of the inner cavity of the heating and humidifying tank, of the hollow shaft, and is communicated with the inner cavity of the hollow shaft; and a slowing part, which is installed on the hollow shaft, located above the dispersing part and used for slowing down the rising speed of the oxygen exhausted by the dispersing part. By setting the hollow shaft, the dispersing part and the slowing part, the rising speed of the oxygen is slowed down, the oxygen is fully heated and humidified, and the effect is better.

The invention provides a chemical-looping combustion device which is characterized by comprising an air reactor fluidized bed and a cyclone separator connected with the air reactor fluidized bed, and a fuel reactor with a screw feeder at the lower end on the side face is connected with the cyclone separator via a first flowing seal valve; and the upper port of a material return pipe is connected with the fuel reactor via a second flowing seal valve, and the lower port of the material return pipe is connected with the air reactor fluidized bed. The invention also provides a use method of the chemical-looping combustion device, which is characterized in that when a solid fuel is used, the fuel is added into the screw feeder at a constant speed, and water vapor and / or CO2 is introduced from a port C below an air distribution plate of the fuel reactor; when a gas fuel is used, the gas fuel is directly introduced from the port C; and the flowing speed of oxygen carrier particles on a grid plate is adjusted by adjusting the inclination degree of the grid plate. The device provided by the invention can flexibly and effectively control the residence time of the particles in the fuel reactor, the reaction speed is increased, and good separation between the solid fuel and the oxygen carrier can be realized.

The invention discloses a large-area constructed wetland treatment system and a treatment method. The large-area constructed wetland treatment system comprises a plurality of treatment units; a constructed wetland is divided into a plurality of areas, any area is provided with a plurality of treatment units in an array mode, and the treatment units are inserted into mud at the bottom of the constructed wetland; each treatment unit comprises a plurality of annular pieces which are concentrically arranged in a sleeving manner, the annular pieces are respectively marked as a first annular piece,a second annular piece, a third annular piece... and an Nth annular piece along the tangential direction, any annular piece comprises a plurality of flexible plates which are arranged at intervals, and a plurality of through holes are formed in each flexible plate at intervals; a gap between every two adjacent annular pieces is adopted to form a treatment area, a water inlet piece is arranged on one side of each treatment area, water is injected into the treatment areas through water inlet pieces, and the water sequentially flows through the plurality of treatment units; the two flexible plates at the corresponding positions of the two adjacent annular pieces in any treatment unit are connected in a matched mode to form an adjusting piece, and the adjusting piece can adjust the capacity ofthe corresponding treatment area.

The invention relates to an earthen ruins dedicated wind erosion simulation device composed of a wind source processing system, a wind speed measurement system, a wind speed control system and a sand dust filling component. A wind speed measurement module, a wind speed control module and a fan of a wind source processing module are connected together to form a sub assembly; a sand-loading bucket module and a steady flow net, a shrinkage port, a honeycomb and a wind outlet of a wind source processing module are connected together to form a sub assembly. During testing, the two sub assemblies are connected through a wind supply hose pipe. Through simulation of different wind speeds and sand-carrying wind, natural wind and sand storm special weather wind erosion effects are simulated, the destructive effect of earthen building ruins under the action of wind erosion is further researched, a large field test is effectively achieved, and a positive promoting role in scientization and standardization development of earthen ruins protection researches is achieved.

The invention provides a concrete sand washing experiment apparatus for off-center shaft type irrigation work. The apparatus includes a first frequency adjustable motor, a stirring shaft, a stirring blade, a stirring pot, a stirring pot bottom seat, a rotating shaft, a second frequency adjustable motor, a fixed bottom seat, a connecting rod and a test component fixation clamp, the stirring shaft is installed in the stirring pot, the first frequency adjustable motor is fixed on the upper end of the stirring shaft, the stirring blade is fixed on the lower end of the stirring shaft; the second frequency adjustable motor is installed in the fixed bottom seat, the bottom part of the rotating shaft is fixed on top of the second frequency adjustable motor, the upper end of the rotating shaft connects with the bottom of the stirring pot through the stirring pot bottom seat; one end of the connecting rod is fixed on the side surface of the fixed bottom seat, the other end of the connecting rod connects with the test component fixation clamp, the test component fixation clamp is used to clamp concrete test component, the concrete test component is fixed in the stirring pot; the center line of the stirring shaft is different from that of the rotating shaft. The apparatus reality simulates high-speed sand washing, the process is simple, and the apparatus is convenient to operate.