79results about How to "Increase the effective volume" patented technology

The invention belongs to the field of sewage ecological treatment, and the purpose is to provide a device and a method for sewage decentralized treatment in circulating vertical flow constructed wetlands. The invention comprises the following aspects: 1) the high-efficient circulating vertical flow constructed wetland system comprises three main components of a vertical flow constructed wetland, a circulating water tank, and a reinforced adsorption column; 2) the operation modes comprise an intermittent mode and a continuous mode. Fillers of the constructed wetland are proportional compositions of several fillers which are low in price and high in adsorption capacities for nitrogen and phosphorus; plants which have strong durability against pollution and have landscape value (thalia dealbata or day lily) or economic value (hybrid pennisetum) are planted on the wetland surface. The invention adopts the high-efficient filler composition to reinforce nitrogen and phosphorus adsorption; effluent backflow increases the dissolved oxygen inside the vertical flow constructed wetland, and enhances the nitration capability of microbes in the wetland; the denitrification capability is enhanced; the contact time of sewage and the fillers is increased; and the removal of phosphorus is enhanced. Series-parallel combinations can be selected flexibly with respect to different sewage types, and the applicability is strong.

The invention relates to a high-performance foam tailings cemented filling material and a manufacturing method thereof. The foam tailings cemented filling material consists of the following components in percentage by weight: 15.0 to 50.0 percent of cement, 40.0 to 85.0 percent of tailings, 0 to 30.0 percent of fly ash, 0 to 1.0 percent of water-reducing agent, and 0 to 0.3 percent of foaming agent. The manufacturing method of the filing material comprises: mixing the cement, the tailings, the fly ash and the water-reducing agent in the proportion at room temperature; adding water and stirring the mixture to be slurry; ensuring that the ratio of water to ash is less than 1.5; preparing the foaming agent in the proportion into foam; adding the foam to the mixture material stirred well and stirring again; uniformly distributing the added foam in the mixture material; and forming the foam tailings cemented filling material. The method has the advantages of greatly increasing the utilization rate of the tailings and effectively reducing the accumulation of the tailings on the ground. The filling material has the advantages of realizing self-flow transport of downhole pipelines and improving downhole operation environment, along with good fluidity, low water consumption and no material segregation.

Provided is a process for processing a filament-shaped stem and a strip-shaped stem simultaneously. The process is characterized in that the first step of tobacco stem expansion, the second step of tobacco stem storage, the third step of tobacco stem separation and the fourth step of tobacco stem classification processing are included; in the first step of tobacco stem expansion, fed tobacco stems are expanded in a stem explosion mode or a microwave mode; in the second step of tobacco stem storage, the expanded tobacco stems are stored for 5 days to two years, so that the tobacco stems are structurally solidified; in the third step of tobacco stem separation, two types of the expanded tobacco stems obviously different in size are separated through tobacco stem separation equipment, one type of tobacco stem is thin expanded tobacco stems, the width or the diameter of each tobacco stem is smaller than 5 mm, and the other type of tobacco stem is thick expanded tobacco stems, and the width or diameter of each tobacco stem is larger than 5 mm; in the fourth step of tobacco stem classification processing, according to the characteristics of the thin expanded tobacco stems and the characteristics of the thick expanded tobacco stems, classification processing is carried out in the corresponding processing process, the thin expanded tobacco stems are processed to be filament-shaped stems and the thick expanded tobacco stems are processed to be strip-shaped stems.

The invention discloses a fluidized bed reactor. The fluidized bed reactor comprises a reactor shell and a circulating unit, wherein the circulating unit is arranged outside the reactor shell; a material outlet which is connected to the circulating unit is formed in the top of the reactor shell; a material inlet which is communicated with the circulating unit is formed in the bottom of the reactor shell; the circulating unit comprises a separator and a circulating pump; the separator is used for separating reaction materials from the top of the reactor shell into gas-phase materials and liquid-phase materials; the circulating pump is used for feeding part of the liquid-phase materials separated by the separator into the reactor shell. The effective volume of the fluidized bed reactor is increased, and the flexibility and stability of operation are improved; meanwhile, by the arrangement of a separation device in the circulating unit, the content of solid particles in the fed materials of the circulating pump is decreased, and abrasion of the circulating pump is reduced, so that the service life of the circulating pump is prolonged.

The invention discloses a high-sensitivity large-strain flexible strain sensor and a preparation method thereof. The method comprises: firstly preparing acidified multi-walled carbon nanotubes, and then ultrasonically preparing acidified multi-walled carbon nanotube/graphene oxide suspension, then taking absorbent cotton gauze as a template, tightly covering the absorbent cotton gauze with acidified multi-walled carbon nanotube/graphene oxide by using a vacuum extraction process, and preparing by using a gradient temperature variation technology to obtain a multi-walled carbon nanotube/graphene/carbonized absorbent cotton gauze three-dimensional hybrid net-like material, and finally compounding and curing with an elastomer emulsion to obtain the high-sensitivity large-strain flexible strain sensor. According to the high-sensitivity and large-strain flexible strain sensor disclosed by the invention, the conditions of the preparation method are mild, the cost is low, the repeatability ishigh, and the strain sensor has excellent deformation capability, is high in sensitivity and wide in strain range, and is used for wearable electronic equipment.

The invention provides a method for discharging brine from accumulated residues at salt cavity bottoms and a communication section of old cavities of butted wells. The method comprises the following steps that (1) water injection well shafts and brine extraction well shafts of the butted wells are transformed correspondingly so as to be used as gas injection wells in a gas injection stage of a gasstorage and as gas extraction wells in a gas extraction stage; (2) a brine discharging well is drilled between the butted wells, so that the brine discharging well is drilled into insoluble residuesin a horizontal communication channel between the butted wells, reaming is carried out on a well hole of an insoluble residue section, and then well cementation construction is carried out; and (3) injection-production strings and a brine discharging string are lowered into the gas injection wells and the brine discharging well respectively according to design requirements, natural gas is injectedinto the gas injection wells, and the brine is discharged from the brine discharging well. The provided method can be used for efficiently utilizing the old cavities of the butted wells through welldrilling water-soluble salt mining, and mainly solves the problem that the brine in the accumulated residues at the salt cavity bottoms and the horizontal communication section is difficult to discharge.

The invention relates to a large vehicle fuel tank with a fuel-shaking alleviating function. The large vehicle fuel tank aims to reduce impact generated by fuel shaking to a fuel tank fixing structureand a vehicle body and reduce heat generated by fuel shaking in the operation process of a large vehicle. An inner cavity of the fuel tank is divided by horizontal partition plates into a plurality of vertically-distributed secondary oil cavities, and two through holes are formed in each horizontal partition plate, wherein one of the two through holes is used for arranging an oil inlet pipe, andthe other one of the two through holes is used for communicating the two corresponding adjacent secondary oil cavities. In the working process, saturated secondary oil cavities and non-oil secondary oil cavities cannot generate fuel impact, and therefore impact of fuel to the fuel tank is only limited to secondary oil cavities where the liquid levels are located. Longitudinal partition plates thendivide each secondary oil cavity into a plurality of horizontally-distributed third-level oil cavities communicating through seams, light floating plates are arranged in all third-level oil cavitiesexcept the bottommost oil cavities, and therefore impact of fuel in the fuel tank to the tank and the vehicle body is effectively lowered. Since the bottom secondary oil cavities are relatively small,oil supply is more sufficient and smoother to a dumper in a less-oil climbing state.

The invention discloses a solar cell structure which comprises a substrate, wherein a ferroelectric material grows on the substrate, a first electrode and a second electrode grow on the ferroelectric material, the first electrode is arranged at the center of the ferroelectric material, the second electrode is arranged at the edge of the ferroelectric material, the second electrode at least partially encloses the first electrode, and a distance is reserved between the first electrode and the second electrode. A circular demising hole is formed in the second electrode, the first electrode is arranged at the center of the demising hole, and the first electrode is circular. An electric field in the ferroelectric material is radially diverged from the first electrode to the second electrode. Compared with a common solar cell structure that the electric field is uniformly distributed and is vertical to the two electrodes, the solar cell structure disclosed by the invention has the advantages that the electric field is radially diverged from the first electrode to the second electrode, a voltage enclosed by the electric field is remarkably increased, so that a number of carriers separated by the electric field is increased, and finally the effect of enhancing a photovoltaic effect is achieved.

The invention discloses a preparation method of rare earth element-doped cobaltosic oxide. The method comprises the following steps: rear earth element is added into a cobalt solution; with the extension of synthetic time, concentration gradient of the cobalt solution added to a reaction kettle increases or decreases; simultaneously, solid-to-liquid ratio of slurry in the reaction kettle is adjusted, and cobalt hydroxide with uniform doping is synthesized by a wet method; after the synthesis, the synthetic product is washed, dried and calcined to obtain a large granular or small granular rareearth element-doped cobaltosic oxide product.

The invention relates to the field of fluid machinery, in particular to a vertical centrifugal oil pump. The vertical centrifugal oil pump comprises a pump body, wherein a pump cover is connected to the bottom end of the pump body; a bearing bracket is connected to the upper end of the pump body; a main shaft is mounted inside the bearing bracket through a bearing; the tail end of the main shaft is connected with the impeller; a sealing ring is connected to the pump body, and a gap is formed between the sealing ring and the impeller; an oil draining hole is formed in the side wall of the pump body above the sealing ring on the back side of the impeller; a pump base is connected to the upper end of the bearing bracket; the oil pump is integrally arranged vertically; the pump base is connected to the top of an oil tank; a part below the pump base stretches into the oil tank; the outlet of the pump body is connected with an oil outlet pipeline. The oil pump is integrally mounted inside the oil tank, and the pump body and the impeller are immersed in oil, so that the leakage problem of the original mechanical seal is solved, the vertical centrifugal oil pump is compact in structure and less in area occupation, and the problems that auxiliary mechanical mounting of a horizontal oil pump on the oil tank of a centralized oil station is difficult and the like are solved; the minimum liquid level of the pump is greatly lowered while an axial force is balanced, so that the effective volume of the oil tank is increased.

The invention discloses a preparation method of cobaltosic oxide. The method comprises the following steps: with the extension of the synthesis time, concentration gradient of a cobalt solution addedinto a reaction vessel increases or decreases, and solid-liquid ratio of slurry in the reaction vessel is adjusted, and dense cobalt hydroxide is synthesized by a wet method; after the synthesis, thesynthesis product is washed, dried and calcined to obtain a cobaltosic oxide product. By the process, spherical or spheroidal large-grained cobaltosic oxide product with laser particle size D10 being12-15 microns, D50 being 17-19 microns, D90 being 22-25 microns, tap density being greater than or equal to 2.4 g/cm<3> and specific surface area being 1.0-3.0 m<2>/g or spherical or spheroidal small-grained cobaltosic oxide product with laser particle size D10 being 1-3 microns, D50 being 3-5 microns, D90 being 7-10 microns, tap density being greater than or equal to 2.5 g/cm<3> and specific surface area being 1.0-3.0 m<2>/g can be prepared.

The invention relates to a processing method for enabling cellulose fibers to achieve antibacterial functions based on a supercritical CO2 fluid technology. The processing method includes the steps: 1) pre-swelling or pretreating the cellulose fibers; 2) adding auxiliaries to increase the solubility of antibacterial drugs in supercritical CO2 and indirectly dissolving hydrophilic antibacterial drugs not easily dissolved in the supercritical CO2 by a supercritical micro-emulsion/reverse micelle method; 3) adding the antibacterial drugs into a drug tank of high pressure equipment, eliminating air, leading in the CO2, increasing pressure in a container to 8-30MPa at the temperature of 32-120 DEG C to obtain supercritical CO2 fluids, and soaking the cellulose fibers in the supercritical fluids; 4) enabling the antibacterial drugs dissolved in the supercritical CO2 to enter the pre-swelled cellulose fibers, continuously performing relative movement of the drug-loaded supercritical CO2 fluids and the cellulose fibers, and enabling the decompressed antibacterial drugs to stay in amorphous areas inside the cellulose fibers to form the drug-loaded cellulose fibers capable of realizing slowrelease.

The invention discloses a highway green belt trimming device, including a vehicle body. A front wheel rotating shaft and a rear wheel rotating shaft are respectively arranged at the front and rear ends of the vehicle body. Tires are respectively arranged at the tail ends of the left and right ends of the front wheel rotating shaft and the rear wheel rotating shaft. The middle of the rear wheel rotating shaft is fixedly connected with a first transmission gear. An equipment box is fixed above the rear part of the vehicle body, and the equipment box is internally equipped with a signal receivingdevice and an equipment control device. The vehicle body has a cavity inside, and a storage battery is installed inside the cavity. The storage battery is connected with an engine transformer and anequipment transformer. The engine transformer is connected with an engine. The end of the rotating shaft of the engine is connected with a second transmission gear. The second transmission gear is intransmission connection with the first transmission gear. The equipment transformer is connected with a first motor, a second motor, a third motor and a fourth motor.

Various exemplary embodiments of the present disclosure relate to an electronic device with a Planar Inverted-F Antenna (PIFA) type antenna and a wireless signal transmitting/receiving device of the electronic device. The electronic device may include: a PIFA (Planar Inverted-F Antenna) type antenna which is transmitting or receiving a wireless signal; a wireless communication unit which is processing the transmitted or received wireless signal; a printed circuit board which is mounted with the wireless communication unit and includes a ground area; a power feeding pad which is electrically connected with a signal transmitting/receiving terminal of the wireless communication unit, and connected with a power feeding section of the PIFA type antenna when the PIFA type antenna is equipped in the electronic device; a ground pad which is electrically connected with the ground area, and connected with a ground section of the PIFA type antenna when the PIFA type antenna is equipped in the electronic device; and a connection section which forms an electric route between the power feeding pad and the ground pad. Meanwhile, various exemplary embodiments may be made based on a technical idea of the present disclosure.

The invention discloses a preparation method for an electroplating dehydrant and belongs to the field of chemical engineering. Oxalyl chloride, N,N-dimethylformamide serve as raw materials, dehydration matter based on chloro imine salt is synthesized, dehydration reaction can be conducted under mild conditions, the dehydration matter can be recycled, the center carbon atom electron cloud density is low, dehydration reaction activity is also improved, and fast dehydration drying is achieved. Methylamine, glycolonitrile, oleic acid and phosphorus trichloride serve as raw materials to prepare matter which is capable of forming a film on the surface of metal and has a rust-proof function, the matter conducts adsorption on the surface of electroplated metal to achieve a corrosion inhibition effect, meanwhile water displacement performance of the matter is good, the matter can assist in dehydrating the surface of the metal at the normal temperature, and a later protection function on the electroplated metal is achieved. According to the preparation method, the problems that after an existing dehydrant is used, a certain proportion of sweat points, water drops, yellow spot defects and other phenomena appear on the surface of an electroplated workpiece are solved.

The invention discloses a compact moving-iron telephone receiver. The compact moving-iron telephone receiver comprises an electromagnetic shielding shell, a diaphragm, a coil and a PCB board. The compact moving-iron telephone receiver is characterized in that the electromagnetic shielding shell is composed of an upper cover and a lower cover which are buckled together. The diaphragm is fixed in the upper cover and is used for dividing the internal space of the electromagnetic shielding shell into a front cavity and a rear cavity. The space formed between the diaphragm and the top board of the upper cover is the front cavity. The residual space in the electromagnetic shielding shell is the rear cavity. The lengths of the rear ends of the upper cover and the lower cover are different. The rear ends of the upper cover and the lower cover are connected through a step surface. The PCB board is fixed on the step surface. The PCB board is moved out from the tail end of the product, and therefore, the internal space of the rear cavity is greater. Compared with the telephone receiver in the prior art, the compact moving-iron telephone receiver has the advantages that under the condition that the effective volumes of the rear cavities are the same, the external size of the product is enabled to be smaller, the telephone receiver can be applied to the smaller space, the application range is wide, and moreover, the quality of the telephone receiver is ensured.

This invention relates to a heat pump heat absorption light emitting double efficient semiconductor, which applies a N type semiconductor and a P-type semiconductor of high light emitting efficiency, one end of them is contacted to each other directly to form a P-N junction, the other end of them is connected with two metal conductors separately by a semiconductor-metal contact face and the two metal conductors are taken as the lead out wire connected with the positive and negative of the supply, the thickness and the material of the contact face should be selected that the contact potential of the refrigeration end is 30-100% of that of the light emitting end, which utilizes refrigeration and light emitting at the same time to increase the heat energy usability greatly and the refrigeration efficiency.

The invention discloses a plastic vacuum cavity plate used in a door and window and a heat insulation wall body of a building, a door and window and a heat insulation layer on transportation equipment, a door and a heat insulation layer on a household appliance, and a transparent panel and a heat insulation layer on a flat-plate solar water heater. The plastic vacuum cavity plate comprises a plastic vacuum cavity plate body processed by a plastic mould plate, a mould plate periphery, a mould plate thin skirt edge, mould plate trapezoidal longitudinal and transverse reinforcing ribs, a mould plate conical convex point, a vacuumizing preformed opening, a preformed opening anti-sticking metal thin gasket, a special electrothermal plastic thin skirt edge sealing machine, a special heating vacuum cup with a vacuumizing preformed opening automatic control electromagnet sealing machine, the automatic control electromagnet sealing machine, an automatic control electromagnet, a lead wire, a vacuum pump and the like, and is used on building doors and windows and the like. Compared with single-layer flat plate vacuum glass, the heat preservation and insulation performance and the noise reduction and removal effect can be improved by three times or more, the process is simple, the equipment investment cost is low, the energy is saved, the consumption is reduced, the emission is reduced, the processing cost is low, the yield is high, the application range is wide, and the market development potential is huge.