2693 results about "Solid particle" patented technology

The invention relates to the cross technical field of fluid mechanics and machine learning, and discloses a particle fluid two-phase flow simulation and reverse optimization method based on deep learning. The method comprises the following steps: constructing a two-phase flow coupling simulation framework based on a fusion discrete element method and smoothed particle fluid dynamics; the drag force, buoyancy and capillary force between particles and fluid are introduced, and the calculation efficiency is improved through GPU parallel acceleration; a graph neural network is adopted to establish a particle-level dynamic interaction modeling framework, and coding and prediction of solid particles and fluid particles are independently processed; a differentiable reverse design system is further developed, and layout parameters of a flow control structure are dynamically optimized based on a gradient descent method by combining automatic differential characteristics of GNN and surrounding target functions such as flow collapse degree and centroid offset, so that effective suppression of two-phase flow destructive behaviors and system performance optimization are realized. The method has high-precision simulation and efficient optimization capabilities, and is suitable for complex two-phase flow engineering scenes such as dam burst and debris flow prevention and control.

The invention provides an adjustable damping capsule vibration isolation system based on electrorheological fluid, and belongs to the field of vibration isolation devices.The adjustable damping capsule vibration isolation system comprises a vibration isolation capsule, the vibration isolation capsule is filled with the electrorheological fluid, and the electrorheological fluid comprises solid particles; a pneumatic pump; a conduit; at least part of solid particles in the electrorheological fluid move to the guide pipe under the action of gravity; the pneumatic pump is configured to pump gas into the guide pipe based on the target gas flow so as to convey a target number of solid particles in the guide pipe into the vibration isolation bag body to change the concentration of the solid particles in the electrorheological fluid, and the electrorheological fluid is configured to perform vibration isolation treatment on elastic waves of the vibration source by using an electrorheological effect based on the concentration of the solid particles.

The invention discloses a deep-sea mining multiphase flow particle conveying prediction and regulation method based on flow pattern recognition. The method comprises the steps that pressure, flow, bubble or liquid drop volume fractions and solid particle volume fractions at different positions in a pipeline are periodically collected through collection equipment; according to the pipe diameter and the gas-liquid ratio and the mixing flow speed obtained through calculation, a pre-built-in flow pattern division algorithm is called, and bubble flow, slug flow, vortex and annular flow are distinguished; solving the volume fractions of gas-liquid discrete units of any diameter in different flow patterns; the conveying speed of solid particles in the multiphase flow is obtained according to the gas-liquid dispersed phase volume fraction; and whether the obtained solid particle conveying speed reaches a preset optimal interval or not is judged, and the flow pattern or the gas-liquid ratio of the multiphase flow in the pipeline is controlled according to the result so as to adjust the solid particle conveying speed. The mining efficiency of submarine minerals can be improved, a dangerous flow pattern formed by an unreasonable gas-liquid distribution ratio can be avoided, and efficiency and safety are both considered.

The system and method for decelerating space objects moving at high velocities are provided. The system comprises at least one closed volume containing a combination of gas, liquid, solid particles, or a mixture thereof. The volume can be transported to the targeted location using a range of means, including a chemical gun, light gas gun, electromagnetic coil gun, superconducting quench gun, a rocket, or a combination thereof. The volume is strategically positioned on the trajectory of the moving object. Upon penetrating the walls of the volume, the object passes through it, experiencing deceleration.

The invention relates to the technical field of storage tank liquid level meters, in particular to a liquid storage tank liquid level meter which comprises a magnetic turning plate liquid level meter used in cooperation with a tank body, the bottom of the tank body is fixedly connected with a water outlet, the top of the tank body is fixedly connected with a water inlet, the outer side of the tank body is further fixedly connected with two sets of butt-joint pipe openings, and the magnetic turning plate liquid level meter is fixedly connected to the butt-joint pipe openings. The arc-shaped baffle is fixedly connected to the bottom of the tank body, the two communicating pipes are fixedly connected to the magnetic turning plate liquid level meter, the filtering assemblies are rotationally connected to the communicating pipes, the two driving assemblies are fixedly connected to the upper end and the lower end of the tank body, the dredging assemblies are fixedly connected to the driving assemblies, and the removing assemblies are fixedly connected to the dredging assemblies. By arranging the dredging assembly and the driving assembly, power generated when liquid enters or is discharged out of the tank body can be used for sweeping the filter cartridge, and swept solid particles are pushed to the middle position of the tank body, so that the solid particles are prevented from being accumulated at the filter cartridge, and the metering accuracy is prevented from being influenced.

The invention provides a capsule vibration isolation system based on nanobubbles, and belongs to the field of vibration isolation devices. The capsule vibration isolation system based on the nanobubbles comprises a vibration isolation capsule, the vibration isolation capsule is filled with buffer liquid and solid particles, the nanobubbles are attached to the surfaces of at least part of the solid particles, and bubble attached particles are formed; wherein the bubble attachment particles are configured to collide under the action of elastic waves of the vibration source, so that nano bubbles on the surfaces of the bubble attachment particles are broken, and the bubble attachment particles generate internal energy based on collision friction and bubble breakage to increase energy dissipation of the elastic waves so as to perform vibration isolation treatment on the elastic waves of the vibration source; and the preparation device is configured to prepare the nano bubbles based on a target generation rate under the control of the far infrared control signal, and input the nano bubbles into the vibration isolation bag body through the lower surface of the vibration isolation bag body so as to change the concentration of the bubble attachment particles in the vibration isolation bag body.

The invention discloses a jet type micro-droplet generation device and a micro-droplet generation method thereof, and belongs to the technical field of liquid-liquid heterogeneous / homogeneous reaction devices. The device comprises an injection pipe, the injection pipe is used for conveying a first liquid phase, the interior of the injection pipe is of a cavity structure, the injection pipe comprises a feeding section, a mixing section, a diffusion section and a feeding pipe, the feeding section, the mixing section and the diffusion section are sequentially communicated and coaxially arranged, the feeding pipe is used for conveying a second liquid phase, and the feeding pipe penetrates through the side wall of the feeding section and extends into an inner cavity of the injection pipe; a discharging opening of the feeding pipe is formed in the mixing section, and an annular flowing space is formed by the outer wall of the feeding pipe and the inner wall of the mixing section. The feeding pipe extends into the mixing section to form an annular flowing space, and a second liquid phase is dispersed into small liquid drops by fully utilizing the annular space and a strong shear flow field in the mixing section. The method is suitable for a liquid-liquid heterogeneous / homogeneous system, including a liquid-liquid heterogeneous / homogeneous reaction crystallization system generated by solid particles.

The invention discloses a cutting fluid solid particle concentration measurement method and system, and relates to the technical field of particle concentration measurement, a time sliding window mode is used for carrying out fusion processing on an image sequence, synchronous acquisition of temperature and illumination intensity is combined, a dynamic temperature illumination normalized background image is constructed, and the concentration of solid particles in a cutting fluid is measured. The problems of brightness drift, image flicker and the like caused by environmental fluctuation are effectively eliminated, and the stability and adaptability of background modeling are remarkably improved. Through a disturbance identification and characteristic parameter extraction module, multi-dimensional characteristic extraction is carried out on non-particle disturbance such as bubbles, oil films and light reflection possibly occurring in the image, a disturbance characteristic set Rdr is formed, and the system can accurately identify and distinguish non-real particle signals. And through a dynamic difference denoising analysis module, a disturbance feature set Rdr is combined to carry out adaptive denoising on a difference image, a real particle structure is reserved, a non-particle interference region is eliminated, and a purified image with an enhanced edge is output, so that cleaner and more accurate basic data is provided for subsequent particle identification.

The invention relates to the technical field of self-sucking pumps, in particular to an efficient vacuum energy-saving self-sucking pump which comprises a base, a first pump cavity, a motor, a rain baffle, a first impeller, a compensation assembly and a drainage assembly, the first pump cavity, the motor and the rain baffle are sequentially installed at the upper end of the base, and the first impeller is installed at the axis position in the first pump cavity; the drainage assembly is installed at the lower end of the first impeller, and the two compensation assemblies are installed in the drainage assembly. After the drainage assembly is started, the drainage assembly is used for guiding the liquid level to overflow the first impeller and removing large-particle solids in fluid, and the compensation assembly drives the first impeller to move downwards to reduce the gap when detecting that the gap between the first impeller and the inner wall of the first pump cavity is enlarged. The tip end of the blade is easily and continuously washed by solid particles, so that the flow and lift of the core pump are reduced, and the efficiency is obviously reduced.

The present invention provides a salt fog solid particle concentration monitoring system for coastal environments, which adopts a salt fog solid particle concentration monitoring device and an external processing system. The device includes a hard enclosure and two valve assemblies arranged inside the hard enclosure, an adaptive tightening system and two monitoring mechanisms. The hard enclosure has an air flow channel that passes through the front and back. The two valve assemblies divide the air flow channel into three spaces along the longitudinal direction of the air flow channel. The valve assembly includes an air intake mechanism and an air outlet mechanism. When the air flow reaches a predetermined wind force level, the air flow opens the air intake mechanism and the air outlet mechanism on the windward side and enters the middle space, driving the adaptive tightening system so that the adaptive tightening system closes the air outlet mechanism on the windward side. At the same time, the air flow continues to move forward and flows through the monitoring mechanism on the leeward side. The monitoring mechanism is used to monitor the salt fog solid particle concentration of the air flow passing through.

The invention belongs to the technical field of environmental protection, and particularly relates to a coal mine dust removal device which comprises an air inlet pipe, the air inlet pipe is transversely arranged and comprises a main body part, an air inlet part and a flow slowing part, the air inlet part and the flow slowing part are arranged at the two ends of the main body part respectively, and the flow slowing part is larger than the main body part in size; the spiral blade is eccentrically arranged in the main body part in the axial direction, the bottom of the spiral blade is in clearance fit with the bottom of the main body part, the spiral blade is driven by a power mechanism to rotate, and the conveying direction of the spiral blade is consistent with the airflow direction in the main body part; the connecting pipe is close to the flow slowing part, is arranged above the main body part and is perpendicular to the main body part, and a filtering mechanism is transversely arranged in the connecting pipe; the air outlet pipe is connected to one end of the connecting pipe, and an induced draft fan is arranged in the air outlet pipe; and the dust collection bin is arranged below the slow flow part in a communicating manner. The spiral blade is eccentrically arranged, the airflow direction can be changed through the spiral blade, and the problem of blockage caused by accumulation of solid particles in the air inlet pipe can be solved.

The invention relates to the technical field of chemical production, in particular to a chemical reaction kettle which comprises a double-layer flow guide mechanism, a flow dividing channel and a branch diffusion wheel set. The double-layer flow guide mechanism comprises a lower-layer impeller, an upper-layer impeller and a lifting force rotating channel; the lower-layer impeller is connected with the lower part of the stirring shaft; the upper-layer impeller is connected with the upper part of the stirring shaft; the shunting channel is connected with the inner wall of the middle of the kettle body; the branch diffusion wheel set is connected with the shunting channel; the lifting force rotary channel is connected between the lower-layer impeller and the upper-layer impeller; flowing circulation that the wall surface position of the kettle body descends and the center position of the kettle body ascends is formed by fluid, particulate matter is prevented from being enriched on the inner wall of the kettle body, the circulating center fluid is diffused to the circulating position through the flow dividing channel and the branch flow diffusion wheel set, and it is guaranteed that reactants in the whole kettle body are evenly heated; the problems that a porous heat insulation scale layer is formed on the wall surface of the kettle body when solid particles exist in reactants of a large chemical reaction kettle, so that the reactants cannot be effectively heated, and the energy consumption is increased are solved.

The invention discloses a direct coal liquefaction pump thermal wear prediction method considering a high temperature effect, and belongs to the technical field of fluid machinery and reliability engineering.The method comprises the steps that the high temperature effect is considered, a liquid phase control equation and a solid particle dynamic model are subjected to coupling iteration, and a solid-liquid two-phase flow numerical model is obtained; the method comprises the following steps: performing full flow field modeling on a fluid domain formed by flow passage components of a pump for direct coal liquefaction, and performing grid division on the fluid domain; constructing a heat-flow-solid multi-field coupling calculation system, and solving the solid-liquid two-phase flow numerical model by adopting a large eddy simulation method based on temperature correction and a discrete element method coupling method to obtain information of flow fields and particle fields at all positions in the pump; operation condition parameters are obtained, the thermal wear rate is obtained through a thermal wear rate calculation formula on the basis of flow field and particle field information of all positions in the pump, and the predicted wear amount of the flow passage component is obtained; and the prediction precision and applicability of the wear model are improved.

The invention relates to the technical field of pipeline monitoring, in particular to a construction method and system of a pipeline risk judgment model. The method comprises the following steps: generating compressed air by using an air compressor, and conveying the compressed air to a preset pipeline to obtain pipeline compressed air data; constructing an air purification model according to the pipeline compressed air data; performing air purification simulation according to the air purification model to obtain purified air data; detecting residual condensate water according to the purified air data to obtain residual condensate water data; performing pipeline corrosion identification based on the residual condensate water data to obtain pipeline corrosion data; predicting the pipeline perforation probability according to the pipeline corrosion data; accumulated solid particles are detected according to the purified air data, and accumulated solid particle data are obtained; and performing pipeline blockage analysis according to the accumulated solid particle data to obtain pipeline blockage data. Based on the pipeline monitoring technology, the accuracy and real-time performance of pipeline risk judgment are improved, and the pipeline safety recognition rate is remarkably increased.

The invention relates to the technical field of centralizers, in particular to a casing centralizer which comprises an annular shell, a plurality of spiral centralizing strips are evenly distributed on the peripheral face of the annular shell in the circumferential direction, and spiral grooves are formed between the adjacent spiral centralizing strips. A pre-swirling piece is arranged at the lower end part of the annular shell; rolling centralizing pieces are movably embedded in each group of spiral centralizing strips; the pre-swirling piece is used for pre-guiding fluid to form primary swirling flow, and spiral grooves between the pre-swirling piece and the spiral centralizing strips are used for jointly strengthening the main swirling flow effect, so that the cleaning efficiency of the fluid on the well wall is effectively improved, meanwhile, deposition of silt and solid particles in the spiral grooves is reduced, large particle blocks can be crushed, a flow channel is prevented from being blocked, and the continuous operation time is prolonged; the rolling centralizing piece can roll in a self-adaptive mode when making contact with the well wall, and the resistance of lowering the casing pipe is effectively reduced. And meanwhile, local high pressure of the centralizer on the well wall is avoided, the stress concentration phenomenon is effectively prevented, scraping and damage to the well wall are reduced, and the stability of a well hole can be maintained.

The invention relates to the technical field of carrier tape recovery, and discloses a waste recovery device for a high-speed carrier tape particle forming machine, which comprises a shell, a feeding hole is formed in the top of the shell, a crushing mechanism is arranged in the shell, a filtering and conveying cavity is formed in the shell around the crushing mechanism, and a filter screen plate is positioned in the bottom area of the filtering and conveying cavity. A scraping plate is mounted between the crushing mechanism and the filter screen plate, the scraping plate is driven to revolve and passively swing in the filtering and conveying cavity, solid particles on the filter screen plate can be stirred and conveyed into the feeding port through revolution of the scraping plate, and the scraping plate can be driven to be always attached to the inner wall of the filtering and conveying cavity through passive swing of the scraping plate; by means of passive swinging of the scraping plate, when abrasion occurs, the scraping plate can be attached to the inner wall of the shell, a gap between the scraping plate and the inner wall of the shell when abrasion occurs is avoided, and the probability that plastic particles enter the gap between the scraping plate and the shell can also be reduced.

This disclosure relates to an annular centrifugal extractor with Solid Separation Part to Separate Solid Particles Present in Solvent Extraction Fluid. In order to remove solid particles from the solution, a solid separation part / rotating bowl is attached to rotating bowl in such a way that solid particles settle inside the solid separation part. This solid separating centrifugal extractor contains two parts: (I) upper part which acts as a liquid-liquid separator to separate aqueous and organic solution used in solvent extraction operation and (II) bottom part which acts as a solid separator to separate solid particle present in solvent extraction liquids. The bottom rotating rotor is coupled with upper rotating rotor by threading arrangement. Both the rotating rotors are confined within a stationary cylinder. Dispersion with solid particles entering inside the rotating bowl is deflected towards the wall of the rotating cylinder by deflecting baffle by centrifugal sedimentation.

The invention relates to axial-flow cyclone separator-particle bed coupling gas purification equipment which comprises a coupling purification part used for staged treatment and purification of impurity-containing gas; comprising an axial particle bed for loading captured particles, at least one axial-flow type cyclone separator is nested in the axial particle bed, and the bottom end of the axial-flow type cyclone separator penetrates out of the axial particle bed and then is communicated with a cyclone ash bucket; the trapping particle conveying and regenerating part is used for regenerating used dust-containing trapping particles, the bottom end of the trapping particle conveying and regenerating part is communicated with the trapping particle waiting area, and the top end of the trapping particle conveying and regenerating part can be communicated with the feeding area. The axial-flow cyclone separator and the axial particle bed are coupled in a nested manner, the process is compact, the occupied area is small, solid particles of 3 microns or above can be separated, multi-stage separation and fine treatment of impurity-containing gas are achieved, and meanwhile the requirement for integrated removal of multiple pollutants can be met.

The invention relates to an airlift pump system for conveying solid particles in underwater mining. The airlift pump system comprises a material collecting system, a lifting system, a pneumatic regulation and control system, a recycling system and the like. The material collecting system collects solid particles and guides the solid particles to a lifting opening of the lifting system, the material collecting system comprises a material containing hopper, a material guiding groove, a material collecting table and the like, the lifting system lifts and separates the solid particles and a liquid mixture, and the lifting system comprises an inclined hole air lift pump and a lifting pipe; the pneumatic regulation and control system comprises an electromagnetic valve, a plurality of auxiliary gas injection chambers, an optical fiber strain sensor, a microwave concentration sensor and the like. The recovery system comprises a gas-liquid separator, an axial flow turbine generator, an energy storage device, a stock bin and the like. Pipeline vibration and ore pulp concentration are monitored in real time through the optical fiber strain sensor and the concentration sensor, a PLC control algorithm is combined, the conventional operation mode, the vibration suppression operation mode and the anti-blocking operation mode are automatically switched, and the safety and stability of the airlift pump are greatly improved. The micro axial flow turbine generator is additionally arranged at the exhaust end, and tail gas kinetic energy is converted into electric energy.

The invention relates to the technical field of sewage information acquisition, in particular to a sewage information acquisition device which comprises a floating plate, a water suction pipe penetrates through the bottom of the floating plate, the bottom of the water suction pipe is communicated with a filter disc, the top end of the water suction pipe is communicated with a first box body, and one side of the first box body is communicated with a second box body. One side of the second box body is communicated with a collecting bottle through a water supply pipe, a filtering mechanism is arranged on the outer wall of the water suction pipe, and a cleaning mechanism used for cleaning impurities is arranged at the bottom of the water suction pipe. Sewage and small solid particles can enter the first box body by controlling the motor to operate at the maximum rotating speed, and it is ensured that detection is accurate and reliable; the motor operates at the minimum rotating speed, only sewage can be collected, pipeline blockage is avoided, fluid impacts a fan blade B to drive a scraper to clean a filter disc, continuous and efficient sewage collection is guaranteed, the rotating shaft rotates to drive an inner cylinder, solid and liquid are separated through centrifugal force, and the sampling precision and reliability are improved.

The invention relates to the technical field of low-pressure casting, in particular to a low-pressure casting device for an aluminum alloy component, which comprises a base, a rotary table rotationally arranged on the base, two holding furnaces arranged on the rotary table, a lifting table arranged on the base and positioned above the holding furnaces, a liquid lifting pipe arranged at the bottom of the lifting table, and a rotating plate rotationally connected to the inner bottom of each holding furnace, two first gears are rotatably arranged between the bottom of the rotary table and the base, the two first gears and the two rotary plates are coaxially arranged respectively, a rotary rod is rotatably arranged on one side of the base, a second gear is fixedly connected to the lower end of the rotary rod, and the second gear is fixedly connected to the other side of the rotary rod. The second gear is in meshing transmission with the first gear. The scraping rods are arranged in the heat preservation furnace to automatically scrape the inner wall and the outer wall of the liquid rising pipe, solid particles formed by solidification of residual molten metal are effectively removed, the situation that the solid particles enter a cavity to cause casting defects is avoided, and the internal quality of aluminum alloy components is guaranteed.

The invention provides a salt mist solid particle concentration monitoring system for a coastal environment, which adopts a salt mist solid particle concentration monitoring device and an external processing system, and the device comprises a hard enclosure, and two valve assemblies, a self-adaptive jacking system and two monitoring mechanisms which are arranged in the hard enclosure, an air flow channel penetrating front and back is formed in the hard fence, the two air valve assemblies divide the air flow channel into three spaces in the longitudinal direction of the air flow channel, each air valve assembly comprises an air inlet mechanism and an air outlet mechanism, and when the air flow reaches the preset wind power level, the air flow opens the air inlet mechanism on the windward side and the air outlet mechanism on the windward side; the air flow enters the middle space to drive the self-adaptive jacking system, so that the self-adaptive jacking system closes the air outlet mechanism on the windward side, meanwhile, the air flow continues to advance and flows through the monitoring mechanism on the leeward side, and the salt mist solid particle concentration of the flowing air flow is monitored through the monitoring mechanism.

The utility model discloses an air filter element of an air compressor, and relates to the technical field of air compressors. The cyclone separator comprises a supporting shell, a cyclone separation assembly and a waste residue box, a supporting net pipe penetrates through and is clamped to the peripheral face of the supporting shell, a filter net is clamped and fixed to the inner wall of the supporting net pipe, an inner supporting pipe is welded and fixed in the supporting shell, the cyclone separation assembly is clamped and fixed in the inner supporting pipe, and the waste residue box is attached to the bottom of the supporting shell. A scraper is arranged at the top of the waste residue box and attached to the inner wall of the filter screen. By arranging the supporting shell, the cyclone separation assembly and the waste residue box, the problems that although the air filter element of the air compressor can clean particles attached to the filter element main body through airflow, a large number of impurities are still retained in the air filter element and move in the air filter element along with high-speed airflow, and the air filter element is possibly damaged are solved; and a simple air filter element is difficult to separate water, oil and solid particles at the same time.

The invention discloses a turbofan rotational flow efficient energy-saving gas separator, which belongs to the technical field of gas-liquid separators, and comprises a tank body, a feeding pipe is arranged on the side surface of the tank body, a gas outlet pipe is arranged at the top of the tank body, a liquid outlet pipe is arranged at the bottom of the tank body, a centrifugal cylinder is arranged in the middle of the tank body, and the feeding pipe is communicated into the centrifugal cylinder; the centrifugal barrel is communicated with the space in the tank body, a first fan is arranged in the centrifugal barrel, and the first fan is driven to rotate so that rotational flow can be formed in the centrifugal barrel; according to the turbofan rotational flow efficient energy-saving gas separator provided by the invention, the first fan is mounted in the centrifugal barrel, the first fan rotates to generate rotational flow, a solid phase and a liquid phase with high density are in contact with the inner wall of the centrifugal barrel under the action of centrifugal force generated by rotation, and meanwhile, solid particles and tiny liquid drops in gas collide with fan blades; liquid drops can be promoted to coalesce and form a liquid film on the inner wall of the centrifugal cylinder, and then flow into the bottom of the separator under the action of gravity to be discharged, so that efficient gas-liquid separation is realized.

A separating grid includes a separating unit arranged, when in use, in a position of inclination obliquely upwards in the direction of flow of running water, fixed grid bars, movable grid bars, and a drive unit connected to the movable grid bars to actuate the movable grid bars to interact with the solid particles and to draw the solid particles out of the running water and to carry the solid particles upwards along the fixed grid bars. A position detection device detects the top position or the bottom position of the movable grid bars. A water level detection device detects the water level of the running water. A control device controls the drive unit according to information from the position detection device regarding the position of the movable grid bars and information from the water level detection device regarding the water level.

The invention discloses a flue gas water-based three-phase foam system and a profile control method, the flue gas water-based three-phase foam system comprises dispersed-phase gas, suspended-phase solid particles and continuous-phase liquid, the liquid comprises the following components in percentage by weight: 0.5-2.0 wt% of a foaming agent, 0.05-0.5 wt% of a stabilizer, 0.05-0.2 wt% of a thickening agent, 0.1-0.8 wt% of a suspending agent, 0.3-1.0 wt% of inorganic salt and the balance of liquid preparation water; the gas comprises flue gas or mixed gas of one or at least two of nitrogen, natural gas, carbon dioxide, air and flue gas and the flue gas; the solid particles comprise one or a mixture of at least two of silicon dioxide particles, montmorillonite particles, bentonite particles, kaolin particles and fly ash particles, and the particle sizes of the solid particles are from nanometer to micrometer. According to the method, the flue gas discharged by the steam-injection boiler is captured and treated and then is injected into the stratum together with the water-based three-phase foam system and the steam segmented plug according to a certain proportion to assist in steam recovery of the thickened oil, so that the recovery rate of the thickened oil can be increased, the emission of greenhouse gases can be reduced, the capture, storage and utilization of CO2 can be realized, and the environmental protection situation requirements of carbon peak reaching and green development are met.

The invention provides a high-efficiency electric heating system suitable for a gas-solid fluidized bed, and the system comprises the fluidized bed which is provided with a gas inlet, a gas outlet, a material inlet and a material outlet, and is internally provided with solid particles; the heat transfer assembly comprises a plurality of hollow objects arranged in the fluidized bed, and part of the solid particles are contained in the plurality of hollow objects; wherein at least a first part of the hollow object is used for being connected with a power supply end, and a second part of the hollow object is not electrified; and the first part of the hollow object is a graphite electrifying body. Through the system provided by the invention, the loss of the coil is recovered, and the effective utilization rate of electromagnetic induction heating is greatly improved.

The invention relates to the technical field of filtering, and particularly discloses a negative pressure impurity filtering device for removing solid particles in scrap removing liquid, which comprises a rotary drum frame, an empty groove formed in the annular side of the rotary drum frame, a box body arranged outside the rotary drum frame, and a driving assembly arranged outside the box body and used for driving the rotary drum frame to rotate, an empty groove is formed in the rotating drum frame, the rotating drum frame is provided with filter cloth for filtering in the empty groove, an adsorption pipe fitting for generating negative pressure is arranged in the rotating drum frame, the size of the filter cloth is larger than that of the interior of the empty groove, and the pushing assembly is used for pushing the filter cloth from the interior to enable the filter cloth to deform so as to enable a filter cake to fall off. Through the matching of the structure, the T-shaped frame can extrude the filter cloth to deform the filter cloth, the influence of excessive accumulation of filter cakes on the subsequent filtering effect is avoided, meanwhile, the filter cakes are removed without adopting an external scraping mode, the condition that the filter cloth is scratched by metal chips when the filter cakes are scraped is reduced, and thus the service life of the filter cloth is prolonged.

The utility model discloses a building foundation pit drainage device which comprises a drainage groove and a water collecting groove, the inner wall of the water collecting groove is fixedly connected with a filter screen plate, the inner wall of the drainage groove is fixedly connected with a drainage pump, the drainage pump is located on the right side of the filter screen plate, and the front face of the drainage groove is fixedly connected with a fixed square box. The inner wall of the fixed square box is fixedly connected with a rotating motor, and the output end of the rotating motor is fixedly connected with a threaded rotating rod. According to the building foundation pit drainage device, water collected by the water collecting tank can be effectively drained through the drainage pump arranged in the drainage tank, it is ensured that accumulated water in the building foundation pit is treated in time and drained in time, it is crucial to guarantee normal building construction, the problems that the foundation is unstable, construction equipment is damaged and the like possibly caused by accumulated water are solved, and the construction efficiency is improved. And the filter screen plate can intercept solid particles such as impurities and silt in water and prevent the solid particles from entering the drainage pump, so that the drainage pump is protected from being abraded and blocked by the impurities.

The invention belongs to the technical field of chemical equipment, and mainly relates to an efficient and safe solid particle feeding system which comprises a control mechanism, a feeding mechanism and a metering mechanism connected with the feeding mechanism. The feeding mechanism comprises a feeding bin and a spiral feeder assembled on the feeding bin, the interior of the feeding bin is used for containing materials needing to be added, the materials fall into the spiral feeder, and the spiral feeder conveys the materials to move; the metering mechanism comprises a weighing unit and a metering bin assembled on the weighing unit, and the metering bin is connected with a spiral feeder; the control mechanism is electrically connected with the spiral feeder and the weighing unit. The control mechanism accurately controls the spiral feeder through feedback of the weighing unit, then the weight of materials entering the measuring bin is controlled, inaccuracy of manual feeding is avoided, compared with manual feeding, labor cost and operation risks are reduced, the feeding efficiency is improved, and then the product quality is improved.