2021 results about "Metal mesh" patented technology

The invention relates to a coal seam extraction drilling air bag type memory metal net cover hole collapse prevention device and method, the device comprises an I-type air bag net cover installation unit body, a plurality of II-type air bag net cover installation unit bodies and an inflator pump, an exhaust pipeline is provided with an exhaust control valve, a hole wall is supported through a memory metal net cover, and the air bag net cover installation unit body and the inflator pump are arranged in the hole wall; the memory metal net sleeves can be matched with drill holes with different hole diameters in a self-adaptive mode and can be repeatedly used, the configuration number of the memory metal net sleeves can be greatly reduced, and therefore the processing cost of hole collapse prevention is further reduced; the installation of the memory metal net sleeve is directly controlled by the expansion of the air bag, so that the memory metal net sleeve can be quickly unfolded and reliably contacted with the hole wall; the removal of the memory metal net sleeve is directly controlled by temperature control gas, so that the memory metal net sleeve retracts to an initial state at the recovery temperature and is separated from the hole wall; the mounting and dismounting process of the memory metal net cover has the advantages of being simple, efficient and easy to operate, and the construction efficiency can be further improved.

Systems, assemblies, apparatuses, and methods herein may provide an enhanced fluid seal between two components. A seal to enhance a fluid seal between a surface of a first component of a pump and a surface of a second component of the pump may include an annular seal body having a seal body surface and a seal cross-section at least partially defined by the seal body surface. The annular seal body may include a metal mesh, thereby to enhance thermal conductivity between the seal and one or more of the first component or the second component, so as to transfer heat from the seal to one or more of the first component or the second component, thereby to reduce a temperature of the seal and extend a service life of the seal.

The invention belongs to the technical field of seawater desalination, and discloses a light-heat-electricity-heat synergistic evaporator and a preparation method thereof.The light-heat-electricity-heat synergistic evaporator comprises a water transmission channel, a light-heat evaporation interface and an electric heating evaporation interface, the light-heat evaporation interface is arranged on the water transmission channel, and the electric heating evaporation interface is arranged in the light-heat evaporation interface; the water transmission channel is made of a two-dimensional layered material, the photo-thermal evaporation interface is made of a two-dimensional layered material composite surface plasmon material, and the electric heating evaporation interface comprises a metal net which is arranged in the photo-thermal evaporation interface and forms an interlayer heating structure. Compared with a traditional photo-thermal evaporator, the photo-thermal-electric-thermal synergistic evaporator adopting an interlayer heating mode can achieve all-weather stable operation through solar energy and electric energy, and the heat loss of electric heating is reduced by regulating and controlling the position of an electric heating evaporation interface. Due to the high conductivity of the metal net, the evaporation efficiency is greatly improved, and the metal net can be efficiently applied to industrial production of water evaporation, seawater desalination and fresh water production.

The embodiment of the invention provides a conductive film, a metal grid touch screen sensor, a touch module and a preparation method of the conductive film. The problem that in the prior art, a conductive film is prone to breakage after being bent for multiple times is solved. The conductive film includes a substrate layer, a first conductive layer, and a first outer blackening layer. The substrate layer is provided with a first surface and a second surface which are oppositely arranged along the thickness direction of the substrate layer; the first conductive layer comprises a plurality of first conductive sub-layers, the plurality of first conductive sub-layers are sequentially stacked on the first surface of the substrate layer, the thickness of each first conductive sub-layer is smaller than a first preset value, and the number of the first conductive sub-layers is larger than a second preset value; the first outer blackening layer is stacked on the first conductive sub-layer on the outermost layer. The touch module prepared from the conductive film provided by the embodiment of the invention has the advantages of good fracture resistance and high visual quality.

The utility model discloses a three-link ecological protection structure for a slope, including a slope, two sides of the slope are provided with fixed beams 1, an irrigation structure is provided on the top of the slope, a plurality of pairs of fixed beams 2 are provided on the slope at equal intervals, a plurality of arc-shaped guide plates are fixedly connected between the fixed beams 1 and 2, a plurality of planting frames are provided between the arc-shaped guide plates, a drainage structure is provided on the opposite side of the fixed beams 1, a filtering structure is provided on the fixed beams 1 and 2, a drainage channel is provided at the bottom of the slope, a crushed stone layer is provided at the bottom of the slope, and a metal grid is fixedly installed on the surface of the crushed stone layer. The advantages of the utility model compared with the existing technology are: the utility model can not only guide rainwater to quickly drain water to avoid rainwater flowing straight down along the slope to form runoff to wash away vegetation and soil, but also collect rainwater and carry out reasonable irrigation to ensure the growth of slope vegetation.

The invention provides a flexible interference network deployment method and system based on carbon fiber conductive cloth. The method comprises the following steps: acquiring space field intensity data in a non-uniform electromagnetic field environment, and performing physical field correction on the space field intensity data to generate compensation field intensity data; a metal screen cloth structure is formed on the surface of the carbon fiber, and porosity distribution parameters are obtained through gradient difference generation treatment; forming a metal mesh cloth layer with gradient pore size distribution, and performing deformation adaptation on the pore size distribution in combination with real-time bending curvature data to generate dynamic and stable porosity distribution; based on electromagnetic field intensity associated region division on the metal mesh layer, dynamically adjusting the grounding resistance value of each divided region, and generating a resistance regulation and control parameter; physical connection between the metal screen cloth layer and the grounding end is realized, and electromagnetic shielding effectiveness parameters are output. According to the invention, adaptive shielding effectiveness optimization of the flexible interference network in a complex electromagnetic environment is realized.

The invention discloses an energy storage battery box based on light high-performance concrete and a preparation method of the energy storage battery box, and belongs to the technical field of energy storage equipment. The energy storage battery box provided by the invention comprises a light high-performance concrete base body and a metal net embedded in the light high-performance concrete base body, according to the lightweight high-performance concrete matrix, a multi-component gel system composed of ordinary Portland cement, a shrinkage reducing agent, a solid waste-based geopolymer and steel slag micro powder is adopted, and solid waste-based artificial sand, fibers and a solid waste-based filling material in a specific proportion are compounded, so that a lightweight high-strength intrinsically fireproof concrete material is successfully prepared; meanwhile, a large amount of industrial solid wastes such as the desulfurized gypsum, the red mud, the steel slag tailings and the fly ash are utilized, efficient resource utilization is achieved, the raw material cost and full-life-cycle carbon emission are remarkably reduced, and the production efficiency is high.

The invention relates to the technical field of metal net welding, in particular to a welding control method and system for the metal net production process, and the method specifically comprises the steps that firstly, functional areas are divided based on the geometric structure of a metal net, temperature changes in thermal imaging images of all the functional areas are analyzed in real time, and weights of different areas are defined; environmental parameters and equipment state data are collected in real time through multiple types of sensors, and comprehensive deviation of materials, environments and equipment at all moments is calculated in combination with material characteristic parameters; adjusting the proportion parameter of each functional area at each moment based on the weight and the comprehensive deviation, and dynamically adjusting the welding power of each functional area at each moment in combination with a self-adaptive PID (Proportion Integration Differentiation) algorithm; the problems that under traditional unified parameter control, the weld quality is not uniform, and the production line rhythm and energy consumption cannot be considered at the same time are solved, and the production efficiency is improved while the welding quality is guaranteed.

The invention relates to the technical field of flexible transparent electrodes, in particular to a Cu / Al laminated metal grid flexible transparent electrode and a preparation method thereof. The Cu / Al laminated metal grid flexible transparent electrode comprises a flexible substrate, a copper layer arranged on the flexible substrate and an aluminum layer arranged on the copper layer, and the aluminum layer located on the outer layer spontaneously forms an Al2O3 passivation layer with the thickness of 2-5 nm in air. The Al2O3 passivation layer can effectively prevent oxygen and moisture from permeating inwards, so that oxidation of the copper layer in a humid or high-temperature environment is fundamentally inhibited, long-term stability of the electrical property of the electrode is ensured, and meanwhile, due to the fact that the thickness of the copper layer is 150-250 nm, excellent conductivity is provided, and low square resistance is achieved; the latticed structure maintains high light transmittance of the electrode while ensuring a high conductive path. Finally, the structure has excellent oxidation resistance, high light transmittance, low sheet resistance and flexible stability under the support of a flexible transparent substrate with the thickness of 50-200 [mu] m, and meets the harsh requirements of a new generation of flexible optoelectronic devices on electrode performance.

The utility model discloses an aluminum ingot production and processing casting machine conveying device which comprises a supporting column, a transmission roller is arranged on the supporting column, a metal net belt is arranged on the transmission roller in a transmission mode, a beam is arranged on the supporting column, a recycling box is arranged on one side of the metal net belt, an aluminum ingot limiting device is arranged on the metal net belt, and a conveying belt is arranged on the aluminum ingot limiting device. A spray cooling device is arranged on the cross beam, a water receiving device is arranged on the cross beam and located between the metal net belts, and an air drying device is arranged on the cross beam. The utility model belongs to the technical field of aluminum ingot conveying and processing, and particularly relates to a conveying device of an aluminum ingot production and processing casting machine, which solves the problems that in the prior art, aluminum ingots are easy to slide in the conveying process due to lack of limiting measures for the aluminum ingots when the aluminum ingots are conveyed, and meanwhile, the aluminum ingots are lack of a rapid cooling and heat dissipation function.

The invention provides a transparent electromagnetic shielding metal copper mesh and a preparation method and application thereof. The preparation method of the transparent electromagnetic shielding metal copper mesh comprises the steps that an electromagnetic shielding substrate is coated with an ink layer, then the ink layer is converted into a patterned metal copper mesh to be deposited on the surface of the electromagnetic shielding substrate through a femtosecond laser reduction direct writing method, and finally ink which is not converted into the metal mesh is cleaned through cleaning liquid. Obtaining a transparent electromagnetic shielding metal copper mesh; the ink is prepared from copper salt, water, reductive low-carbon alcohol and a nano material, and the nano material comprises at least one of a high-conductivity nano material and a high-permeability nano material. According to the method, the transparent electromagnetic shielding metal copper mesh is prepared through femtosecond laser reduction direct writing, by adjusting the line width and the period of the metal copper mesh, the shielding effectiveness is effectively improved under the condition that the high light transmittance of an electromagnetic shielding material is guaranteed, the technological method is simple and feasible, and high-efficiency and low-cost manufacturing of the transparent electromagnetic shielding metal copper mesh is achieved.

The utility model discloses a novel road sound barrier, and belongs to the technical field of sound absorption and insulation and noise reduction. The novel road sound barrier comprises connecting stand columns arranged at certain intervals and composite plates arranged between the adjacent connecting stand columns, the bottoms of the connecting stand columns are fixed to a base, each composite plate is provided with a metal shell formed by connecting a perforated panel, a back plate and an end keel, and sound absorption cotton / plates are arranged on the metal shells. An elastic supporting metal net is fixedly arranged between the back plate and the sound absorption cotton / plate; sound absorption holes are formed in the perforated panel; the end keel is of a rectangular frame structure and is fixedly connected with the edge of the panel with the holes and the edge of the back plate. The sound absorption device has the beneficial effects that the elastic supporting metal net can be conveniently mounted on the back plate and plays a role in stably supporting the sound absorption cotton / plate; the rainproof structure of the composite board can prevent rainwater from entering the composite board; the novel road sound barrier is convenient to install and construct, stable in structure and capable of meeting the long-time application requirement.

The present application discloses a bar burner and a combustion device. The bar burner comprises: a bar burner body, a gas flow channel being formed inside the bar burner body, the bar burner body being provided with a top plate, and the top plate being provided with a plurality of combustion flame holes communicated with the gas flow channel; a metal mesh provided on one side of the top plate and arranged corresponding to the plurality of combustion flame holes; and a distribution and flame stabilizing piece provided in the gas flow channel, the distribution and flame stabilizing piece being provided with a plurality of distribution holes communicated with the plurality of combustion flame holes.

A downspout guard having opposed sidewalls and opposed end walls connected to a top wall, all formed from mesh material, such as metal mesh. Bottom edges of the walls engage a gutter bottom wall to hold the guard in place and forcing water to flow through the guard before entering the downspout. The sidewalls can engage gutter front / back walls, further holding the guard in place. Trapped debris enhances further debris entrapment, even trapping particles smaller than the mesh opening. Optionally, end walls taller than the sidewalls to accommodate obstructions and allow height adjustment by relative angle changes.

The invention relates to a high and steep rock slope ecological restoration structure based on a biological solidification technology. The high and steep rock slope ecological restoration structure comprises a rock slope body, anchor rods, a metal net, a square solid containing cavity, a biological solidification coarse-grained soil layer, a vegetation base layer and an n-shaped component. The metal net is flatly laid on the surface of the rock slope body and is fixed on the surface of the rock slope body through a plurality of anchor rods; the plurality of anchor rods are transversely arranged in rows and longitudinally arranged in columns along the rock slope body, and are driven into a stable rock stratum of the rock slope body; the square solid containing cavity is fixedly connected with a rock slope body through an n-shaped component embedded into the rock body. The biological curing coarse-grained soil layer is formed by curing coarse-grained soil which is laid in the square solid containing cavity and contains biological slurry by spraying bean enzyme treatment liquid; the vegetation base layer is sprayed and seeded on the upper surface of the biological curing coarse-grained soil layer. The ecological restoration structure for the high and steep rock slope is good in strength and integrity, convenient and efficient to construct, good in ecological restoration effect and high in ecological stability and continuity.

The invention relates to the technical field of metal net welding, in particular to intelligent metal net welding equipment which comprises a support, a seam welder and the like. A first electric sliding block is slidably connected to the support. A seam welder is fixedly connected to the first electric sliding block. According to the metal net edge rolling device, only one end of a metal net needs to be manually placed between the abutting rod and the clamping rod, then the metal net is automatically rolled into a cylindrical shape through the guide rod, manual edge rolling operation on the metal net is not needed, the manual labor amount is reduced, and the problems that due to manual operation, the two ends of the overlapped position of the metal net are prone to dislocation, and welding seams are inclined after welding is completed are solved. The problem that the metal net forms an irregular cylinder is solved; and the seam welding electrode wheel of the seam welding machine is used for rolling and welding the overlapped part of the metal net, so that the seam welding machine does not need to be manually held by hand for welding operation.

An antenna module according to an embodiment comprises: a first layer which is arranged on the front surface of a dielectric substrate, and which is composed of a radiator region having a metal mesh grid, and a dummy region having a dummy mesh grid formed of a plurality of patterns; and a second layer which is arranged on the rear surface of the dielectric substrate and which allows the metal mesh grid to operate as a ground. The plurality of patterns can form a first metal line to a fourth metal line, the first metal line and the third metal line can be parallel to each other, the second metal line can connect the first metal line to the third metal line, and the fourth metal line can be connected to a second end portion of the third metal line.

The invention discloses a mesh antenna metal net zero-constraint splicing method. A metal net is tiled and hung on a working tension applying device, and working tension is applied to the metal net in the transverse direction and the longitudinal direction; in the working tension state, tension control belts are sewn on the edges of the two sides of the metal net in the length direction; lapping two metal nets which need to be spliced and are sewn with the same tension control belts, wherein the sections of the lapping positions are lapped according to the sequence of belt-net-net-belt; sewing two layers of metal nets along the two sides of the tension control belt by adopting composite material sewing lines; and repeating the steps, and sewing all the metal meshes required by the whole antenna reflecting surface in sequence. According to the method, the metal net is spliced by adopting an overlock stitching method, the tension control belt can be detached after splicing is completed, the formed splicing seam is of a net-net structure, the thickness is only 0.07-0.08 mm, the elasticity keeps the original elasticity of the metal net, the net surface tension is more uniform, and the risk that the antenna expansion resistance is increased due to micro shrinkage of the tension control belt at high temperature is effectively eliminated.

The invention relates to a light UHPC-based logistics tray and a preparation method thereof, and belongs to the technical field of logistics trays. The logistics tray comprises a light UHPC base body and a metal net. The light UHPC matrix is prepared from the following raw materials in parts by mass: 885 to 930 parts of ordinary Portland cement, 45 to 50 parts of solid waste-based sulfur aluminum iron series low-carbon cementing material, 380 to 570 parts of solid waste-based artificial sand, 0 to 150 parts of filler, 15 to 20 parts of fiber, 2 to 4 parts of HPMC, 20 to 49 parts of water reducing agent and 180 to 210 parts of water. The lightweight UHPC matrix adopts a composite cementing material, and the composite cementing material contained in the raw materials for preparing the added solid-waste-based artificial sand is similar to the cementing material of the lightweight UHPC matrix, so that a hydration product of the cementing material can be embedded into micropores in the solid-waste-based artificial sand; and the solid waste proportion in the solid waste-based artificial sand can reach 80% or above, so that the mechanical strength requirement of the logistics tray can still be met.

The application discloses a bottle-shaped sound-electricity conversion power generation device, which comprises a shell, a PVDF film, a metal net and a piezoelectric component.

The invention relates to a dry tar-containing tail gas treatment process which comprises the following steps: step 1, after tail gas is collected by a pipeline, granulating tail gas enters a pipeline degreaser under the air draft action of a tail gas fan at the tail end; the invention relates to the technical field of tar-containing granulation tail gas treatment. According to the dry tar-containing tail gas treatment process, tar larger than or equal to 10 microns is intercepted through a detachable filter screen in a pipeline degreaser, and blockage is prevented in cooperation with a steam / solvent flushing opening; the dry type preprocessor adopts three-stage gradient filtration of a G3 metal net, G4 glass fibers and G5 glass fibers, viscous particles below 5 microns are thoroughly removed, and automatic overload alarm is realized through pressure difference detection; submicron oil mist is adsorbed by the electric trapping oil remover through a high-voltage electric field, safety is guaranteed through an explosion venting sheet, and electrodes are continuously / discontinuously flushed through a spraying pipe; the cleaning system separates a mixing / circulating area through a partition plate, an oil separation net protects a flushing water pump, and long-term stable operation of the device is achieved. The problem that tar is difficult to clean due to adhesion is thoroughly solved.

The invention provides a spraying curing method of a ceramic fiber spraying material.The spraying curing method comprises the following steps of S1, base layer pretreatment, S2, non-spraying area protection, S3, spraying construction, S4, curing protection, S5, follow-up maintenance and S6, acceptance detection.A silane coupling agent pretreatment technology is adopted, a stable slow-release film is formed on the surface of fiber cotton, and a metal net mechanical anchoring structure is matched, so that the surface of the fiber cotton is protected; the interface bonding of ceramic fibers and a matrix is remarkably enhanced, thermal expansion stress is effectively resisted through the synergistic effect of chemical bonding and physical occlusion, the problems of hollowing and falling caused by insufficient interface bonding force in a traditional process are solved, infrared heating and a nano curing agent technology are integrated, the curing process is accelerated, a compact film layer is formed, the curing period is shortened, and the curing efficiency is improved. The microcapsule technology optimizes a heat conduction path, the layered spraying technology inhibits thermal stress concentration, the overall heat preservation performance of the coating is improved, heat loss is reduced, and the heat insulation requirement of high-temperature equipment is met.

The invention belongs to the technical field of electromagnetic shielding of optical transparent parts, and particularly relates to a large-slope conformal curved surface electromagnetic shielding transparent light window considering infrared visible light laser, which consists of a curved surface optical glass substrate, an electromagnetic shielding layer and a surface protection layer, the electromagnetic shielding layer is of a multi-layer electromagnetic shielding structure composed of a conductive polymer transparent film and a randomly-distributed metal mesh film. The electromagnetic shielding transparent light window has high shielding characteristics in X and S wave bands, keeps excellent optical transmission performance, and can meet the requirements of high imaging quality and high stealth characteristics of a high-performance seeker. Meanwhile, the appearance of the light window is trimmed and the design parameters of the shielding layer are adjusted, so that the service requirements of the seeker in different combat scenes can be met, and the electromagnetic shielding transparent light window with excellent performance is provided for the seeker of weapon equipment.

The invention relates to the technical field of brazing, in particular to a heterogeneous material brazing joint and a preparation method thereof. The preparation method comprises the following steps that S1, a porous metal net is placed on the surface of a to-be-welded steel substrate for diffusion welding, and the steel substrate with the surface configuration is obtained; and S2, the configuration face of the steel base body serves as a face to be welded, the steel base body with the surface configuration is assembled with brazing filler metal and a titanium base body to be welded, and then vacuum brazing is conducted. According to the method, the porous metal net is welded to the surface of the steel substrate to be welded through diffusion welding, a periodic heterogeneous microstructure surface is formed on the steel substrate, a discontinuous mismatched and multi-phase alternating interface structure is constructed in a customized mode, a continuous stress line of a connector can be cut off, rapid initiation and rapid expansion of cracks are restrained, and strengthening and toughening brazing connection of titanium and steel can be achieved.

The invention relates to the technical field of welding, in particular to an optical detection system for gas components in a stabilizer welding tool, a welding tool box and a gas adding system are prepared, and an upper plate of the welding tool box is provided with an operation window; the welding tool box is provided with a glass window; the gas component detection system comprises a beam splitter and a movable reflecting mirror, and a light path between the beam splitter and the movable reflecting mirror penetrates through the glass window; a metal net cylinder is arranged between the opposite glass windows of the welding tool box; a light path penetrates through the hollow part of the metal net cylinder; the gas component detection system further comprises an interference path stroke difference adjusting system; the interference path stroke difference adjusting system comprises a glass container, and the glass container is arranged on a light path between the beam splitter and the movable reflector; the interference path stroke difference adjusting system further comprises an air pump, and the air pump is connected with a sulfur hexafluoride gas source. Therefore, the stability of argon in the welding tool box is ensured, and the welding quality of the stabilizer is improved.

The invention relates to the technical field of wet metal separation, in particular to wet metal separation and wind drying equipment which comprises a first workbench, first supporting plates are fixedly connected to the four corners of the top of the first workbench, transmission parts are arranged on the inner sides of the first supporting plates, and an acid pickling part is arranged at the top of the first workbench. The front side of the first workbench is fixedly connected with a second workbench. According to the wet-process metal separation and wind-power drying equipment, efficient treatment of metal parts is achieved through cooperative work of the innovatively-designed transmission component and the acid pickling component, a cross beam structure driven by a reciprocating lead screw is adopted to be matched with a cam-rope linkage mechanism, and therefore lifting vibration precisely controlled by + / -5 degrees is achieved while a metal net cylinder horizontally moves; fitting of metal pieces is effectively prevented; a second toothed plate and gear meshing system designed in an involute tooth shape drives a rotary rubber rod array, acid liquor permeation is promoted through high-frequency random knocking, and the oxide stripping efficiency is improved by 40%.

The utility model relates to the technical field of PVC (polyvinyl chloride) pipes, and discloses a flame-retardant PVC pipe which comprises a PVC main pipe, a filling layer and a protective outer pipe which are sequentially arranged from inside to outside, flame-retardant coatings are coated on the inner wall and the outer wall of the PVC main pipe, a metal net is embedded on the outer pipe wall of the protective outer pipe, and the protective outer pipe is a CPE (chlorinated polyethylene) modified PVC pipe. The problems that in the prior art, when an existing PVC pipe encounters part of extreme use environments, a coating on the surface of the PVC pipe is scraped and leaks out of a bottom pipe, and the service life of the bottom pipe is shortened are solved.

The present application relates to the technical field of contaminated soil cleaning, and particularly relates to a cleaning equipment for treating soil pollution, which comprises a base plate, a containing box is fixed on the top of the base plate, a metal mesh bag is fixed in communication at the bottom of the containing box, squeezing mechanisms are arranged around the metal mesh bag, the squeezing mechanism comprises a lead screw, an L-shaped rod one is in screw transmission on the outside of the lead screw, and a squeezing plate is fixed at one end of the L-shaped rod one. In the present application, the contaminated soil is contained by using the metal mesh bag, the two squeezing plates arranged relatively around the metal mesh bag can successively and staggeredly squeeze the soil, which is convenient for crushing the contaminated soil, makes the soil fully contact with the leaching agent for purification, and also facilitates fully crushing the soil to make it fall to the bottom of the chemical solution tank through the mesh holes of the metal mesh bag, the impurities such as plastics, stones and packaging bags which are not easy to be squeezed and crushed are left in the metal mesh bag, and the impurities in the contaminated soil are cleaned out.

The invention provides a preparation method of a Joule heat-assisted super-wetting metal net, a metal net with super-hydrophilic performance and a metal net with super-hydrophobic performance. According to the material, carbon nanotubes are firmly adhered to the surface of a metal net through polydopamine mediation to construct a micro-nano coarse structure, a hydrophobic alkyl compound is grafted through a sulfenyl three-component coupling reaction to reduce surface energy, and a super-hydrophilic / underwater super-oleophobic metal net and a super-hydrophobic metal net are prepared respectively. The Joule heating effect of the material is remarkably enhanced by introducing the carbon nanotubes, so that the temperature of the material can be rapidly increased to 100 DEG C or above within 20 seconds under the ultralow voltage of 2.0 V. The characteristic can be effectively used for in-situ heating viscosity reduction of high-viscosity crude oil, continuous and efficient oil-water separation is achieved in a double-channel separation device, the crude oil flux reaches up to about 3985 L.m <-2 >. H <-1 >, and the separation efficiency exceeds 98.6%. The method is also suitable for stainless steel meshes with micron-sized apertures, and can realize efficient separation of various crude oil emulsions.

The invention belongs to the field of coal mining, and particularly discloses a coal mining method for caving top coal in front of a coal face frame, which comprises the following steps of: S1, extending a telescopic beam to a coal wall support top plate, paving a metal net along a coal wall, and binding and connecting the metal net with a hydraulic support side protection plate to form a metal net false top; s2, a hydraulic support side protection plate above a front roller of the coal mining machine is contracted in advance, a coal seam at the bottom of the working face is cut according to the mining and caving ratio, and a coal caving opening is located at the front end of a hydraulic support telescopic beam; s3, the top coal seam is slowly released to a scraper conveyor to be conveyed out under the shielding action of a metal net and a hydraulic support side protection plate by stretching out and retracting a hydraulic support telescopic beam front and back; the coal discharging port is located in front of the support, top coal is slowly discharged to the scraper conveyor to be conveyed out from the side protection plate in front of the telescopic beam under the shielding effect of the laid metal net false roof, and the method has the advantages of being high in coal resource recovery rate, simple in construction organization and high in hydraulic support applicability.