46results about How to "Increase permeable area" patented technology

The invention relates to an air-permeability aluminum foil and a preparation method thereof, wherein the aluminum foil is mainly suitable for air-permeability packaging in requirements of agricultural production and daily life. The aluminum foil is characterized by being made of 3003 alloy, the thickness of the aluminum foil is 0.03-0.05 mm, pinholes which can reach more than 10,000 every square meter are densely distributed on the surface of the aluminum foil, and the maximum diameter of each pinhole is not more than 0.05 mm. The preparation method comprises the following process steps: batching, smelting, cast-rolling, cold-rolling, interannealing, cold-rolling, and foil-rolling to reach the finished thickness, slitting into a finished specification, and finished annealing. The invention has the advantages of good air permeability, strong corrosion resistance and strong oxidation resistance.

The invention discloses a large-curvature radioactive level horizontal drilling process and device includes drilling vertical well to oil layer, lowering the sleeve, drilling sleeve shoe, building up angle directionally, washing well, lifting the drill, lowering special sieve vessels, filling with gravels, decoupling the hanger for circulated well washing, lifting the hanger de-coupler and all drilling tools above, drilling other radial wells, etc. Through drilling a plurality of radial wells, the invention enlarges seepage area, expanding seepage range, increasing the daily production for single well and raises final recovery ratio, so as to achieve the purposes of making full use of energy, increasing economic benefits and benefiting the society.

The invention belongs to the technical field of water resource environment protection and discloses a biological retention device for controlling rainwater non-point pollution on two sides of river channel and a design method of the biological retention device. The biological retention device is characterized in that the rainwater sand settling wells of the device are communicated with biological retention belts through overflow ports; each biological retention belt sequentially comprises a water storage layer, a planting soil layer, a sand filtering layer, a gravel layer and an original soil layer which are laid from top to bottom; a geotextile layer is laid between each planting soil layer and the corresponding sand filtering layer, and a geotextile layer is laid between each sand filtering layer and the corresponding gravel layer; an impermeable membrane layer is laid between each gravel layer and the corresponding original soil layer; water-permeable blind pipes are inserted in the bottoms of the gravel layers and communicated with rainwater inspection wells excavated in one side of the biological retention belts. The biological retention device has the advantages that the device is simple, high in flexibility, unlimited by sites, small in size, applicable to different regions of a city, and the like; meanwhile, the device is a small ecological system and can beautify environments and relieve the heat island effect of the city.

The invention discloses a core body used for rapid absorption of sanitary products. The core body includes an accelerating layer, a flow guiding layer and an absorption layer from top to bottom. The accelerating layer contains short wood pulp fibers, the absorption layer contains long plant fibers, and the area of the accelerating layer is smaller than that of the absorption layer. By arranging the accelerating layer and the flow guiding layer, an 'instantaneous absorption and slow release' buffering moisture-retention mechanism is provided for liquid before the liquid enters the absorption layer, the absorption time of the absorption layer is prolonged, the liquid absorption contact surface is increased, and the technical effects of improving the absorption performance of the absorption layer and preventing side leakage are achieved.

The invention discloses a magnetic integrated full-bridge LLC resonant converter. The converter is characterized by comprising a primary side direct current power supply, an input filter capacitor, aprimary side inverter bridge, a resonance and voltage conversion (comprising a magnetic integrated structure and a resonance capacitor), a secondary side rectifier bridge, an output filter capacitor and an output load, energy is provided by a primary-side direct-current power supply, enters the resonance and voltage conversion part through inversion of a primary-side inverter bridge switching tube, passes through a secondary-side rectifier bridge diode and is finally provided for a load. According to the magnetic integration structure, the resonance inductor, the excitation inductor and the transformer are integrated in one magnetic core, the whole converter only comprises one magnetic element, the size of the magnetic element is effectively reduced, and the power density of the converteris improved. High-power, small-size and high-efficiency energy transmission can be realized under frequency conversion control, phase shift control and frequency conversion and phase shift hybrid control, and the resonant converter has the advantages of wide-range voltage input, the wide gain range, high transmission efficiency, easiness in realizing soft switching and the like.

The invention discloses a novel composite drainage and seepage pipe with a physical blockage resisting function. The novel composite drainage and seepage pipe comprises a drainage and seepage pipe body with a cylindrical main body, a plurality of water seepage outer grooves are uniformly distributed on the periphery of the drainage and seepage pipe body in an annular array, water seepage structures communicating with the inner wall of the drainage and seepage pipe body are arranged at the bottoms of the water seepage outer grooves, geotechnical cloth is wrapped around the outer wall of the drainage and seepage pipe body and the inner walls of the water seepage outer grooves, a sand gravel filter material fills the water seepage outer grooves, and a protection layer wraps the outside of thedrainage and seepage pipe body. According to the novel composite drainage and seepage pipe, the sand gravel filter material and the geotechnical cloth are combined together for use to mutually complement superiority, wherein the sand gravel filter material is utilized to resist physical blockage, and the geotechnical cloth is utilized to block fine particles in soil, so that the risk of the physical blockage of the geotechnical cloth is reduced, and the overall water drainage capacity of the drainage and seepage pipe is improved.

The invention discloses an internal-and-external-inflow well head device of a self-infiltration filtration recharge well and belongs to the technical field of water retention The internal-and-external-inflow well head device of the self-infiltration filtration recharge well comprises a well cover and a geotextile inverted filter layer, and is characterized in that the well cover is composed of an upper well cover portion and a lower well cover portion, the upper well cover portion is shaped in a hollow ring groove and is provided with water inlet orifices, the lower well cover portion which is an impermeable body is buried in the ground of a river bottom or a channel bottom, the well cover is integrally shaped in a hollow bottomless cylinder, the hollow ring groove of the upper well cover portion is provided with a groove bottom, the round water inlet orifices are formed in the outer side of the upper well cover portion, the inner side of the hollow ring groove and the groove bottom, and the geotextile inverted filter layer is arranged on the outer side of the well cover and is identical to the outer side of the well cover and the hollow ring groove in shape. The internal-and-external-inflow well head device of the self-infiltration filtration recharge well has the advantages that on the premise that the outline dimension of the well head device is not changed, flow capacity and silt controlling and anti-impact capabilities of a recharge pool are improved remarkably, and the service life of the recharge pool is prolonged.

The invention provides a high-permeability anti-fouling nanofiber separation membrane material and a preparation method and application thereof. According to the preparation method, a woven fabric with periodic textures on the surface serves as a base material, a hydrophilic polymer nanofiber coating is loaded on the surface of the woven fabric through a wet non-woven technology, meanwhile the woven fabric and the polymer nanofiber coating are tightly attached through a chemical cross-linking agent, and the high-permeability anti-fouling nanofiber separation membrane material is obtained. Through the mode, the prepared separation membrane material has a small-aperture compact structure and a surface texture structure at the same time, and the permeability and the pollution resistance of the membrane material are synergistically improved. The preparation method of the separation membrane material is simple, convenient and easy to implement, the controllability is high, the preparation efficiency can be improved, large-scale preparation is easy, and the prepared separation membrane material can be applied to the field of ultrafiltration and microfiltration of tangential flow liquid and has high practical application value.

The invention relates to a steel slag pavement structure and a construction method thereof, and relates to the field of road engineering. The steel slag pavement structure comprises a surface layer, abase layer, a cushion layer and a siphon connecting layer which are sequentially arranged from top to bottom, the bottom surface of the surface layer is provided with a first inclined part, and the top surface of the base layer is provided with a second inclined part corresponding to the first inclined part; the inclined plane of the first inclined part and the inclined plane of the second inclined part are arranged oppositely in the inclined direction; the first inclined part and the second inclined part are provided with water guide parts convenient for water seepage; and a reinforcing partfor stabilizing the base layer is arranged between the cushion layer and the base layer. The effect of improving the water seepage effect is achieved, and convenience is provided for solving the waterlogging problem.

In a through hole closing process, a metal plate is attached to one surface of a conductive base member having a plurality of through holes by the use of a magnet, in a copper plating process, a copper plating layer is formed on the conductive base member and the metal plate exposed within the through holes, from the side of the conductive base member where the metal plate is not attached, thereby to fill up the through holes, in a film forming process, a Pd alloy film is formed by plating on the surface of the conductive base member after removal of the metal plate, and in a removal process, the copper plating layer is removed by selective etching, thereby to produce a hydrogen production filter that is used in a reformer of a fuel cell so as to be capable of stably producing high purity hydrogen gas.

The invention relates to a water quality microbiological detection device used for microbiological detection in a water sample. The water quality microbiological detection device comprises a detectorbody, a detection unit and a heating unit, wherein a detection cavity is arranged in the detector body; the detector body is provided with a first communicating hole and a second communicating hole; the first communicating hole is located at the top of the detector body, so as to fill liquid in the detection cavity by virtue of the second communicating hole, and gas in the detection cavity can beemptied by virtue of the first communicating hole and can overflow from the first communicating hole; and a filter element is arranged in the detection cavity, and the filter element is connected withthe second communicating hole, so as to stop microorganisms from being discharged from the second communicating hole. The first communicating hole is formed in the top of the detector body, and the air can be evacuated, so that the detection cavity can be full of the filled liquid, the liquid flows out, produces negative pressure and sucks in the water sample, the two communicating holes in the detector body can be conveniently and directly connected with a pipeline, and online real-time automatic detection on the microorganisms is realized.

The invention discloses a firm ground water permeability reconstructing device which is characterized by comprising a hollow circular truncated cone with an opening in the upper bottom surface, wherein a hard cover is embedded in the opening in the upper bottom surface of the circular truncated cone, the cover is provided with a water permeating hole, the circular truncated cone is arranged in a firm ground, the cover is flush with or slightly lower than the upper surface of the firm ground, the lower bottom surface of the circular truncated cone is flush with the lower end face of the firm ground; a notch is arranged at the edge of the cover; the area of the upper bottom surface of the circular truncated cone is less than that of the lower bottom surface of the circular truncated cone. According to the firm ground water permeability reconstructing device, the water permeating area of the firm ground can be effectively increased, the water permeability of the firm ground in a city is improved, and the waterlogging is reduced; the cost of reconstructing an existing firm ground is low, and the firm ground water permeability reconstructing device is relatively convenient to maintain.

The invention provides an efficient dialysis device for blood purification, which comprises a support, a manipulator and a sleeve, one side of the support is provided with an inlet cylinder, one side of the inlet cylinder is provided with an outlet cylinder, the outlet cylinder is communicated with the top of one side of the sleeve through a connecting pipe, the bottom of the other side of the inlet cylinder is provided with a water pump through a bolt, and the bottom of the other side of the inlet cylinder is provided with a water pump through a bolt. The other side of the top of the sleeve is provided with a supporting sleeve, the top of the supporting sleeve is provided with an air pump through a spring bolt, and the other side of the supporting sleeve is provided with a clamping sleeve. According to the efficient dialysis device for blood purification, the efficiency that toxins and waste permeate into dialysate can be improved, and then the dialysis time can be effectively shortened; therefore, risks caused by dialysis work are reduced, poor infection is prevented, blood infection is prevented, safety of personnel is guaranteed, it can be effectively guaranteed that blood in the equipment completely flows back into the body of the personnel, blood loss is avoided, hematopoietic burden of the personnel is reduced, and the device is suitable for purifying toxins in the blood of the human body.

The invention discloses a treatment system for groundwater pollution and a treatment method of the groundwater pollution. The treatment system comprises a deep reservoir, wherein the deep reservoir isexcavated in a groundwater polluted area; multiple adits communicated with the deep reservoir are formed in a side slope of the deep reservoir; linings for the adits are steel tubes or nodular cast iron tubes; multiple water drainage holes are formed in the linings in a distribution manner; the tail ends of the water drainage holes are provided with water drainage perforated tubes; the water drainage perforated tubes are located on the outer sides of the linings, and are welded with the linings; water inlets of the water drainage perforated tubes are externally wrapped by non-woven fabric inverted filters. After polluted groundwater is converged in the deep reservoir, according to the pollution type and level of the groundwater, targeted chemical agent and a dosage are selected; the chemical agent is poured into the deep reservoir; the purification treatment is carried out on the deep reservoir; treated water is pumped out from the deep reservoir, and is used for irrigation or other purposes. By using the treatment system, the infiltrating area of the groundwater is increased; the groundwater is convenient to quickly converge and quick to treat. The range of treating the groundwater is wide; the construction difficulty is low, and the treatment system has the characteristics of being highly efficient and economical for treating the groundwater pollution.