72 results about "Circulatory Process" patented technology

A method and apparatus of tracking a change in a region of interest in an subject according to respiration are provided. For example, an apparatus embodiment may include a model selector configured to select a model from among models of a region of interest of an subject generated to indicate a change in a region of interest during a respiration cycle of the subject, a respiration signal obtainer configured to obtaining a respiration signal of the region of interest by using ultrasound images including the region of interest obtained during the respiration cycle of the subject, and an information obtainer configured to obtain information regarding the region of interest at a time when the ultrasound images are obtained, from the selected model, by using the obtained respiration signal.

A removing method including the following steps. A substrate is transferred into an etching machine, wherein the substrate has a material layer formed thereon. A cycle process is performed. The cycle process includes performing an etching process to remove a portion of the material layer, and performing an annealing process to remove a by-product generated by the etching process. The cycle process is repeated at least one time. The substrate is transferred out of the etching machine. In the removing method of the invention, the cycle process is performed multiple times to effectively remove the undesired thickness of the material layer and reduce the loading effect.

The invention relates to a renewable flue gas desulfurization agent and the preparation method thereof. The flue gas desulfurization agent is the aqueous solution of 1,4-bis(2-hydroxypropyl) piperazinyl sulfate containing 30% of 1,4-bis(2-hydroxypropyl) piperazinyl by mass. The flue gas desulfurization can be prepared from the of 1,4-bis(2-hydroxypropyl) piperazinyl and other raw materials, by mixing according to a certain proportioning at normal temperature. Because the pKa1 of the conjugate acid of the 1,4-bis(2-hydroxypropyl) piperazinyl is 3.8, and the pKa2 of that is 8.2, the obtained flue gas desulfurization agent achieves the advantages of large absorbing capacity, high de-absorbing ratio, low de-absorbing temperature and suitable temperature difference in the absorbing and de-absorbing process; can reduce the energy consumption in absorbing and de-absorbing process obviously, and is very suitable for the application in process of removing SO2 in discharged flue gas in coal fired power plant and so on.

The invention relates to a pH-sensitive anticancer prodrug and a preparation method as well as application thereof, which belongs to the field of medicine and chemical industry. The technical problem to be solved is to provide the pH-sensitive anticancer prodrug, and the anticancer prodrug has highest solubility when the pH value is between 4 and 6, can nearly not be dissolved when the pH value is less than 3 or more than 7, and almost does not release adriamycin during the circulation due to small solubility particularly when circulating in blood (the pH value is approximately equal to 7.4), thereby having small toxic side effect. The pH-sensitive anticancer prodrug is a conjugate obtained by coupling the adriamycin and pectin with a molecular weight of between 71,000 and 400,000 through a chemical bond. The pH-sensitive anticancer prodrug is obtained by the following steps: a pectin aqueous solution and an adriamycin aqueous solution are added with a dehydrating agent to react under the condition that the pH value is between 6 and 8, and then are dialyzed and condensed.

The invention discloses a control method of a central gas water heater. The control method is characterized in that in the preheating process, when a water inlet temperature sensor arranged on a water inlet pipe detects that the water return temperature is equal to the set temperature of the water heater, a master controller controls a combustor to stop combustion, and a circulation water pump is controlled to continue to operate for water pump posterior circulation; and when any of the following conditions is met, it is judged that a user is bathing, and the circulation water pump is shut down, wherein (1) in the water pump posterior circulation process, when the water inlet temperature sensor detects that the water return temperature is lower than the set temperature of the water heater by T DEG C, 5 DEG C<=T<=10 DEG C, and (2) when the operating duration time of the circulation water pump exceeds 30 min, water pump posterior circulation is not executed. According to the control method, whether the circulation water pump enters posterior circulation in the preheating process or not is used as the judgment basis, whether the user utilizes boiling water in the preheating process or not is judged, interference is prevented from being caused to the preheating stop condition, water temperature fluctuation brought by circulation water pump operating during bathing is avoided, and the bathing comfort of the user is guaranteed.

The invention provides a bionic binary cooperative nano-carrier as well as a preparation method and an application thereof. The bionic binary cooperative nano-carrier comprises an erythrocyte membrane, glucose oxidase, iron-supporting ferritin nano-particles and a photosensitizer, wherein the glucose oxidase and the iron-supporting ferritin nano-particles are coated with the erythrocyte membrane,and the photosensitizer is embedded into the surface of the erythrocyte membrane or entrapped by the erythrocyte membrane. Chain stimulative responsibility coordination of tumor hunger therapy and chemical kinetic therapy is realized, two enzymes are conveyed to a target site of an organism with the carrier on the basis of biocompatibility of the erythrocyte membrane and tumor targeting of targeting molecules, accurate administration is realized by membrane rupture based on 808 nm near-infrared light illumination in the tumors, the problem of drug resistance is solved effectively, furthermore,systemic toxicity caused by drug application is remarkably reduced, and damage to other normal tissue in an in-vivo circulation process is prevented effectively. The invention further provides the preparation method of the bionic binary cooperative nano-carrier. The bionic binary cooperative nano-carrier and the preparation method have good application prospect.

The invention discloses a simulation running apparatus for a passive safety master system of a pressurized water reactor nuclear island, and belongs to the technical field of nuclear energy. The structure of the simulation running apparatus is that: a reactor core makeup water tank, a first electromagnetic valve, a second electromagnetic valve, an accumulator, a pressure vessel, an eighth thermal couple, an ink injector and a valve are assembled together through a pipeline, wherein the ink injector, a voltage regulator, a safety valve, a second pressure meter, a relief valve and a valve are assembled together through a pipeline; and the ink injector, a third thermal couple, a vapor generator, an injection pump and a valve are assembled together through a pipeline. The simulation running apparatus has the advantages that circulating processes of a first loop and a second loop under a normal working condition in a containment vessel of a nuclear island of a nuclear plant and running processes of a safe injection system and a passive residual heat removal exchanger under a loss of coolant accident (LOCA) working condition can be directly known.

The invention relates to the technical field of environmental-protection detection, and discloses an air bag cleaning machine and an application method thereof. Through creation, the invention provides air bag cleaning equipment capable of effectively cleaning air bags with high efficiency in batches; a distributor and a branch switching valve communicate with multiple air bags to be cleaned; then, an air extracting pump, a main way outlet valve, a main way inlet valve and an air source are used for multiple exhausting and inflation circulating processes in batches until the cleaning purpose is achieved; and meanwhile, in the cleaning process, the measurement result of an air pressure sensor can be used for identifying if the exhausting is thorough, and the air bags cannot burst due to excessive inflation, so that the needed manpower and cleaning time are greatly reduced, experimenters are liberated, and the cleaning efficiency is improved. In addition, the air bag cleaning machine fills the market blank, can change manual cleaning of the air bags to automatic cleaning, guarantees or even improves the cleaning effect, and is convenient for actual application and popularization.

The invention aims to provide a method for simulating a soil body water saturation-drainage circulation process and carrying out a compression test on a soil body. The invention provides a soil body water saturation-drainage circulation compression test method, comprising the following steps of: 1) preparing a test sample needed by a lateral confinement compression test or consolidation test; 2) enabling the test sample in the step 1) to be saturated; 3) draining; 4) saturating; 5) repeating the steps 3) and 4) for a plurality of times; and 6) carrying out the lateral confinement compression test or the consolidation test. A device for realizing the method mainly comprises an axial loading system and a pressure chamber. The pressure chamber comprises a pressure chamber cylinder, a top cover and a base. In a test process, the test sample is mounted on a pot clay plate and an annular porous stone; a test sample loading plate is mounted on the test sample; and a force transmission device of the axial loading system penetrates through the top cover to be contacted with the test sample loading plate.

The invention discloses a simulation apparatus and simulation method of atmosphere corrosion. The apparatus comprises a cavity, an aqueous solution constant-temperature control unit, a temperature control unit and a humidity control unit, the cavity is provided with a sealing cover body, a test assembly is arranged in the cavity, the test assembly comprises a test rack, a separator plate 1 and a separator plate 2, the test rack is arranged on the separator plate 1, a material to be tested is arranged on the test rack, a water level in the cavity above the separator plate 1 is an immersion zone, a water level in the cavity between the separator plate 1 and the separator plate 2 is a moistening zone, a water level in the cavity under the separator plate 1 is a drying zone, the wall of the cavity in the drying zone is respectively provided with a water inlet 1 and a water outlet 1, the inner wall of the moistening zone is provided with a water outlet 2, the corrosion medium of a material to be tested enters the cavity from the water inlet 1, and the immersion state, the moistening state and the drying state of the material to be tested can be simulated by controlling the height of the liquid level. The drying and wetting alternation circulation process of the material in natural atmosphere environment is completely reproduced by combining the apparatus and the simulation method.

The invention provides an air intake and exhaust system for the substrate baking furnace which has a high energy conversion efficiency and a long time reliable operation. The heat discharge gas discharged from the vent of the furnace passes through fans and is fed to the circulation path as a hot-air flow. Then the flow is heated by a heater and purified by a heat resistant HEPA filter and fed to the inner space of the furnace again from a spraying port. In the circulation process, a part of the heat wind heated by the heater flows into the vent-pipe and passes through the catalyst unit. The discharge gas flows into a heat exchanger after most organic matters in the discharge gas are decomposed, because the high temperature discharge gas heated again passes through the catalyst unit. The heated feeding gas whose temperature is boosted by a heat exchange in the heat exchanger with the discharge gas are fed to the circulation path.

An energy-saving dynamic plate ice heat pump comprises a heating main circulatory system and a hot gas bypass branch; evaporators fall into sets; blow expansion type evaporators in each set are connected in parallel; ice is molten and made in turn by each set of evaporators; the heating main circulatory system operates for continuously heating all the time; the evaporators in the hot gas bypass branch communicate with a high-pressure liquid storage device through a refrigerant pump; part of liquid refrigerants is used for cooling overheated gas through a liquid return valve; the ice melting process is mild and stable; the system circulatory process is stable and efficient; the unit matching cost is low; the water-ice phase change latent heat can be efficiently extracted for heating; the ice making evaporators are low in cost, high in heat transfer efficiency and high in evaporation temperature; the power consumption is low; and the ice making capacity is high.

The invention provides a circulating tumor cell (CTC) separating and enriching device on the basis of closed loops. The circulating tumor cell separating and enriching device is characterized by comprising an acquisition channel, an anticoagulation channel, a control valve, a blood collector, a blood collecting bag, a CTC acquisition filter and a blood transfusion channel; the acquisition channel and the anticoagulation channel are respectively or jointly connected to an input end of the control valve, a switching end of the control valve is connected with an input end of the blood collecting bag, the blood collecting bag is arranged on the blood collector at a blood acquisition phase, an output end of the blood collecting bag is sequentially connected with the CTC acquisition filter and the blood transfusion channel, and an output end of the blood transfusion channel is connected with another switching end of the control valve. Blood acquisition / transfusion circulating procedures can be switched over by means of changing the position of the blood collecting bag relative to the acquisition channel / the blood transfusion channel. The circulating tumor cell separating and enriching device has the advantages that residual liquid can be successfully transfused on the basis that circulating tumor cells can be separated and enriched to the greatest possible extent, accordingly, loss of the liquid can be prevented, and the circulating tumor cells can be repeatedly acquired in a circulating manner.

The present invention relates to external grain re-circulating technology in large circular fluidizing dry fume desulfurizing system. The desulfurizing process includes preparing desulfurizing agent, desulfurizing reaction inside the desulfurizing reaction tower and external desulfurizing agent grain separation and re-circulation. In the external grain re-circulation, the returned material is two-stage separated and re-circulated, the grains separated by the first stage and the second stage desulfurizing agent grain separator are fed to the fluidizing region in the lower part of the desulfurizing reaction tower separately through different re-circulation inlets, resulting in raised desulfurizing agent grain utilization and desulfurizing reaction efficiency. Compared with available technology, the present invention has much higher fume dedusting efficiency, high desulfurizing efficiency up to 92 % at Ca / S of 1.1-1.3, less adhesion and blocking in the lower desulfurizing tower part and lowered load of the desulfurizing agent grain separator.

The invention discloses a new-energy cold and heat air exchange system of an air conditioner for an automobile, which comprises an evaporator (2), a condenser (9), an electric compressor (11) and a dry liquid storage tank (30) connected through a pipeline 1 (5) to form a closed system, arranged in a box body and controlled by an electronic control system, wherein the front part of the box body is provided with an evaporation case (17); the rear part of the box body is provided with a condensing case (16); and the middle part of the box body is provided with the electronic control system. The new-energy cold and heat air exchange system is characterized in that the refrigeration process is that a refrigerant is gasified by the evaporator (2), then enters the electric compressor (11), the condenser (9), and the dry liquid storage tank (30) and enter the evaporator (2) again to disperse the cold air into inside of a compartment, so that the refrigeration is finished. In the whole circulating process, the electric compressor plays a role of compressing and delivering steam of the refrigerant; the electronic digital control panel computes according to parameters of each sensor through a mathematical model and experiential data, accurately controls the rotation speed of the electric compressor, the opening degree of an electronic expansion valve and reasonable air quantity of a fan, so that the system is kept at the best working state.

The invention relates to a method for biologically purifying industrial circulating water. The method is characterized in that a biodegradation reactor is arranged in a circulating water system; nitrobacteria and denitrifiers are taken as inocula in the biodegradation reactor; at least part of the circulating water enters the biodegradation reactor to be biologically treated; and the water from the biodegradation reactor enters the circulating water system. Compared with the prior art, the method has the advantages that the biological treatment method is adopted to treat the nutrient sources needed by microorganisms before the circulating water enters the device, so that the microorganisms brought in by the circulating water in the circulating process are difficult to survive, and then growth and reproduction of the microorganisms in the circulating water system are controlled.

The present invention relates to water purification using solar energy. More specifically, systems and methods according to the present invention collect solar energy to heat non-potable water in a super-insulated structure. Compressed heated air is injected to evaporate water vapor out of brackish water, saltwater, or dirty water, thereby creating saturated air. The saturated air is drawn through a cooling tower and distilled water is precipitated. The systems and methods employ heat recovery and recycling processes to maximize energy efficiency.

The invention discloses a four-dimensional saline-alkali soil improvement method which includes the steps: L1 building an element internet of things system; L2 applying soil directional regulators; L3adding plant growth regulators; L4 planting stress resistance rice. The step L1 further includes: matching a sensor, an internet of things, big data and an underground pipe network module to form anintegrated irrigation and drainage system; combining a micro-sensor with an NS-IOT communication technology and transmitting underground growth conditions, overground growth environments, crop growthsituations and pest and disease damage information in plant growth and water and soil circulation processes to a big data center in real time; intelligently monitoring water and soil fertilizer pesticide circulation and plant growth processes by AI (artificial intelligence) and remote expert digital diagnosis control modes; implementing periodical, automatic and quantitative irrigation by automatic control in all links; timely and automatically draining salt-containing water; timely, quantitatively and uniformly applying fertilizers.

The invention discloses a fish and vegetable planting and breeding system applied to a two-sided connected greenhouse and suitable for the northern area. The system comprises a fish pond, an edible fungi cultivation frame, a plurality of adjustable siphon drainage gravel coarse filter cultivation tanks, a seepage type gravel fine filter cultivation tank and a water purification pool. According tothe scheme, symbiosis of fish, vegetable and fungi in the fish and vegetable planting and breeding system is realized, the system is particularly suitable for the two-sided connected greenhouse in thenorthern area, water used in each part of the system is recycled, aquaculture wastewater provides fertilizer for a vegetable zone while being purified in the recycling process, waste is changed intowealth, pollution to the water environment due to emission of the aquaculture wastewater is reduced, vegetable yield is increased, vegetable quality is improved, gas balance, temperature balance and energy balance among fish, vegetable and fungi are realized, symbiosis of fish, vegetable and fungi is realized, waste produced by the fish, vegetable and fungi respectively is changed into useful matter for another process, meanwhile, yield of the fish, vegetable and fungi is increased, quality of the fish, vegetable and fungi is improved, waste and pollution of the water resource are greatly reduced, and demands for environmental protection, energy conservation and sustainable development are met very well.

The invention relates to a preparation method of nanometer hybrid particles. The preparation method comprises following steps: 1, nonionic surfactant polyoxyethylene polyoxypropylene ether segmented copolymer and a hydrophobic medicament molecule are dissolved in an organic solvent, and rotary evaporation is adopted to remove the organic solvent completely so as to obtain film; 2 deionized water is added into the film, and redissolving is carried out so as to obtain a micelle based aqueous solution; ammoniacal liquor and silane coupling agent are added into the micelle based aqueous solution,and reaction is carried out at room temperature so as to obtain an organosilicon and micelle based aqueous solution; 4, dialysis is adopted for purifying of the organosilicon and micelle based aqueoussolution so as to obtain organosilicon and micelle based nanometer hybrid particles. The invention also provides the nanometer hybrid particles prepared through the preparation method. The inventionalso provides a nanometer drug used for treating tumor. The preparation method is capable of realizing carrying of hydrophobic drug molecules, preventing in advance leakage of drugs in vivo circulation effectively, and ensuring the reduction responsive release of drugs in tumor tissue.

The invention discloses a quick cleaning device for a furnace body induction coil. The quick cleaning device comprises a barrel. The quick cleaning device is characterized by further comprising a centrifugal pump, wherein the inside of the barrel is separated into two cavity bodies, wherein one cavity body contains water with chemical substances, the other cavity body contains clean water, the two cavity bodies of the barrel are respectively connected with the centrifugal pump through pipelines, and the centrifugal pump is connected with a connection end of a cleaning head for cleaning the furnace body induction coil through the pipeline. The device can be used for solving the problems that scales are easily formed on a heat exchange surface of an induction coil of the prior art due to high temperature in a circulation process of circulating water, the temperature of the induction coil is quickly raised when the scales reach a certain thickness, a shut-down phenomenon is caused by abnormal operation of the induction coil, and production is influenced. The quick cleaning device for the furnace body induction coil is low in cost, simple in structure and complete in function and can effectively remove the scales of the induction coil.

The present invention is apparatus and process of treating tail gas from incinerating mixed wet and dry solid waste. The treating apparatus includes evaporating cooler, bag type filtering reactor, bubbling fluidization reactor, fume re-heater, adsorbent storage and ash storage connected together. The treating process includes heating to purify the fume from garbage incinerator in the re-heater; completing the dry purifying or fume in the evaporating cooler; and absorbing the fume after dry purification in the bubbling fluidization reactor with absorbing liquid.

The invention discloses an energy-saving environment-protecting material sucking and drying all-in-one machine. The machine is composited of a material barrel main body, a fan, a pulsation switching exhaust mechanism, a heater, an electrical control system, a connecting pipe fitting and other components. According to the material sucking and drying all-in-one machine, an air cylinder of the pulsation switching exhaust mechanism is controlled to act through the electrical control system, so that the circulating process such as internal vacuum material sucking and feeding, air flow heating and drying the materials, hot air recycling through filtering and refluxing, and dust filtering, cleaning, bag collecting in materials in the material barrel are carried out; in the process, the electricalcontrol system receives and processes signals feedback from sensor switch such as air pressure, temperature and material level, so that the intelligent control of the drying air volume and the heating temperature in the material processing process is realized, and the energy-saving effect is remarkable; according to the material sucking and drying all-in-one machine, a blanking device adopts a rotary disc sealing type blanking structure, so that the sealing effect is good, and the operation is convenient; and metal impurities in the materials can be effectively adsorbed by the arrangement ofa magnetic column, the metal impurities can be timely removed through a cleaning window, so that the injection molding quality of products is ensured, and the use safety of an injection molding machine is ensured.

The invention relates to a sterilizing device sprinkling high-temperature pulse hot water. The sterilizing device comprises a sterilizing reactor, a hot water tank, a steam pipeline, a heat exchanger, a temperature sensor, a circulating pump and a controller, wherein an exhaust port, a water inlet and a water outlet are formed in the sterilizing reactor, and the water outlet and the water inlet of the sterilizing reactor are connected with a first pipeline; the hot water tank is connected with the water inlet of the sterilizing reactor through a second pipeline; steam converted by hot water in the circulating process enters the steam pipeline; the first pipeline, the second pipeline and the steam pipeline are respectively connected with the heat exchanger; the temperatures of the sterilizing reactor and the hot water tank are sensed by the temperature sensor; the circulating pump is connected with the first pipeline and the second pipeline and provides the hot water in the pipeline with flowing power; the controller is electrically connected with a valve of the first pipeline, a valve of the second pipeline, a valve of the steam pipeline, the circulating pump and the temperature sensor. Microorganisms can encounter with multiple rapid instant temperature cyclic variation processes in a high-temperature region, so that the purpose of rapidly killing the microorganisms is achieved.

The present invention relates to a separator device, in particular, a 3-phase separator capable of efficiently separating three primary liquids mixed up by water, oil and gas, which accurately refers to a pressure vessel. The pressure vessel is provided with an injection port disposed on one side of the pressure vessel and used for injecting the three primary liquids mixed up by water, oil and gas into the pressure vessel; a separating device used for gradually separating the three primary liquids in the pressure vessel; a first flow outlet arranged on one side of the pressure vessel and used for discharging the separated gas; a second flow outlet connected with the bottom of the pressure vessel and used for discharging the separated water; and a third flow outlet arranged adjacent to the second flow outlet and used for discharging the separated oil. An inlet part and an outlet part are arranged to surround one part of the outer surface of the pressure vessel.

The invention belongs to the technical field of offshore oil and gas exploitation and relates to a hydrate well-drilling overflow simulating and monitoring experiment device. A shaft is designed according to the principles of geometrical similarity and dynamic similarity; a well-drilling fluid storage tank is used for providing a fluid in the experimental process, and a gas storage tank and a gascompressor are used for providing gas in the experimental process; generating of hydrates is accelerated through the stirring effect of a drilling rod under the non-heating condition, heaters on the drilling rod are started to enable the hydrates to be decomposed, and the states of the hydrates circularly flowing in the shaft and an annulus along with the well-drilling fluid are monitored; and according to collected hydrate generation and decomposition data, the quantification corresponding relation between Doppler signals and the section gas volume fraction is determined, and early overflow monitoring during hydrate well-drilling is achieved. The hydrate well-drilling overflow simulating and monitoring experiment device is simple in structure and easy to assemble, the whole circulating process is clear, and experimental operation is convenient to conduct.

The invention discloses a suction filtration purification device of benzalkonium chloride. The suction filtration purification device mainly comprises a cylindrical purification kettle inside which a hemispherical filtering network frame is fixedly mounted, a microporous filter membrane, a filter drier and a gas sucking pump, wherein the gas sucking pump is connected with a vent hole of the purification kettle; a port A of a two-position three-way electromagnetic valve A51 is connected with a liquid outlet of the purification kettle; a liquid outlet of a liquid sucking pump A is connected with an inlet of a cooling crystallization chamber; a liquid inlet of the liquid sucking pump A is connected with a port B; an outlet in the bottom of the cooling crystallization chamber is connected with a liquid inlet of a liquid sucking pump B; and a liquid outlet of the liquid sucking pump B is connected with a port U of the two-position three-way electromagnetic valve B. The suction filtration purification device has the beneficial effects as follows: the suction filtration purification device is simple in structure; a cleaning solution can be recycled while purification is ensured; and moreover, in the recycling process, impurities dissolved in the cleaning solution can be filtered out.

The invention relates to an air-conditioner silencer, which is characterized in that the silencer comprises a seamless casing, an outer shell and an inner shell; the outer shell and the inner shell are both in a hollow structure with two communicated ends; the inner wall of the outer shell and the outer wall of the inner shell are mutually fixed together through welding and are arranged inside the seamless casing; metal wires which can allow liquid to flow through and are distributed in a scattered shape are arranged in the inner shell. Compared with the prior art, the silencer has the advantages that the silencer achieves the aim of silencing by utilizing that sound energy is converted into heat energy because of friction effect when sound waves are transmitted in porous sound absorption materials among the scattered-shape metal wires, and is ideal in silencing effect via detection, and in addition, the silencer of the invention can filter impurities when the liquid flows through the scattered-shape metal wires during freezing circulation, so as to play a role in cleaning freezing circulation.

The current invention, in a first aspect, concerns a method for separating a lead component from a lead coated glass, for instance glass from a CRT recycling process. The coated glass is crushed and ground to achieve a finely grained material of a mixture of a glass fraction and a lead fraction. The lead fraction is separated from the glass fraction based upon a difference in specific weight and / or density. In a second aspect the current invention concerns an apparatus for separating a lead component from a lead coated glass, for instance glass from a CRT recycling process. The apparatus is provided with a grinding unit. The apparatus includes a separator unit suited for separation based upon a difference in specific weight and / or density.

The invention discloses a bottom flow shearing and thickening device and method for a thickener. A sucking pipe is communicated with one side of the bottom of a thickener cone, a feeding pipe is arranged in the middle of the thickener cone in the mode of surrounding the cone by a round, after surrounding the cone by one round, the feeding pipe is connected with the sucking pipe through a circulating pump, and multiple symmetrical spraying branches with valves are arranged on the feeding pipe and enter in the mode of being perpendicular to the side wall of the cone. The sucking pipe is sequentially provided with a main valve, a blowdown valve, a sucking pipe decontaminating backwash water valve, a decontaminating backwash water inlet and a feeding pipe decontaminating backwash water valve, and a main valve is arranged on the feeding pipe. An ore pulp self-circulation mode is adopted to evenly mix ore pulp at the bottom of the thickener so as to stably discharge bottom flow; floc structures are destroyed by means of shearing force in the ore pulp circulation process, water contained in the floc structures is released, the concentration efficiency is improved, and the purpose of increasing pulp concentration is achieved finally.