131results about How to "Reduce homework" patented technology

The invention discloses a washing machine, which can have a washing do linear movements in an up-down direction and carry out washing operation. The washing machine comprises a shell (100), a washing cylinder (151), a suspension device (130) and an up-down drive unit (110), wherein the shell forms the external appearance of the washing machine; the washing cylinder is positioned inside the shell (100) and is used for holding washing water; the suspension device moves the washing in the up-down direction to ensure that at least one side of the washing is soaked in the washing water (152) inside the washing cylinder (151); and the up-down drive unit (110) is used for driving the suspension device (130) in the up-down direction. When the washing machine is used for washing clothes, the washing cannot be intertwined, which can reduce inconvenient operation that users need to separate the washing and can reduce friction between the washing in the washing machine and a washing groove during rotation, so as to reduce the damage to the washed clothes.

The invention provides a method for cutting a light emitting diode chip through deep etching. The method comprises the following steps: firstly, forming a light emitting element comprising a plurality of light emitting units on the surface of a semiconductor substrate; then fabricating a protecting layer with etching windows formed at the connections between each of the light emitting units; etching from each of the etching windows to form sliver channels; next, filling each of the sliver channels with insulation material and thinning the semiconductor substrate from back until exposing the insulation material; and finally making a back coating, removing the insulation material in each of the sliver channel, and expanding the film to obtain independent light emitting units. According to the invention, by adopting the method of forming the sliver channels through deep etching, the cut grooves are deep into the sapphire substrate, thus avoiding laser cutting processing step, avoiding the problem of light absorption caused by laser ablation, and increasing light outgoing efficiency; and the deep etching depth is equivalent to the final thickness of the chip, and separated chip grains can be obtained by removing the filled SiO2, thus reducing sliver operation, avoiding broken sides and broken corners in the slivers, and increasing the yield.

The invention belongs to the technical field of railway rail devices, and particularly relates to a rail gauge transformation device which comprises a supporting rail, an unlocking rail and a guide rail. The supporting rail comprises a supporting preparing rail and a supporting continuing rail, the unlocking rail comprises an unlocking preparing rail and an unlocking continuing rail, the supporting preparing rail forms a supporting section, the supporting continuing rail and the unlocking preparing rail form an unlocking section, and the supporting continuing rail, the unlocking continuing rail and the guide rail form a guide section. The invention aims to provide a rail gauge transformation device to solve the problem of low efficiency of a rail gauge transformation mode of a bogie, so that the gauge-changeable bogie can automatically transform rail gauge specifications after passing the rail gauge conversion device. Railway transportation of a 'silk road economic belt' is implemented, the problem of non-uniform railway gauges needs to be solved, and the ground rail gauge transformation device is an essential device in a rail transformation link, so that design of the ground railgauge transformation device has quite important and profound significance.

The invention relates to an oil and gas well fracturing flow-back fluid treatment method. The method comprises the steps that fracturing flow-back fluid flowing back from an oil well mouth enters a buffer tank to be oxidized, a conditioning agent is added into the oxidized fracturing flow-back fluid, the PH of the oxidized fracturing flow-back fluid is adjusted to range from 7.5 to 9, the adjusted fracturing flow-back fluid is fed into a reactor through a lift pump, a treatment agent is added into the fracturing flow-back fluid in the reactor, sufficient mixing and reaction are achieved to generate floccule, the reacted mixture is pumped into a solid-liquid separation device for solid-liquid separation, solid phases obtained after separation are directly discharged out of the solid-liquid separation device, liquid phases obtained after separation enter a fine treatment device, and suspended matter, chromaticity and large-particle ions are removed further. Up-to-standard release and recycle of discharged water are achieved, the fracturing flow-back fluid is treated, flocculating settling, solid-liquid separation and filtering and clarification are efficiently and continuously achieved for oil and gas well fracturing flow-back fluid in an oil field, and the purposes of recycling, up-to-standard release and reinjection into a reservoir are achieved.

The invention discloses an LED (light emitting diode) display light box. The LED display light box comprises a diffuser and an advertising panel, wherein the bottom of the diffuser is connected with a rotating device, the rotating device is arranged in a cavity of a supporting device, the supporting device is used for supporting the diffuser above the supporting device, the advertising panel is arranged on the outer side of the diffuser, a plurality of LED (light emitting diode) light sources are arranged inside an area formed by the diffuser, and the LED light sources are uniformly arranged in parallel in the vertical direction. The LED lamps are arranged in the display light box to be used as the light sources, so that the consumption of the electric energy can be greatly reduced, and the electric energy can be reduced by more than 80 percent; meanwhile, since the service life of the LED lamp is long, the LED display light box can be used for a long time, the unnecessary operation and corresponding maintenance expense for disassembling the display light box caused by the damage of a bulb can be reduced; the rotating device is arranged below the integral light box, the display light box can be driven to rotate, the content on different advertising panels can be displayed, and the propaganda effect is better.

The invention discloses a washing machine that can make washing move up and down in a straight line and execute washing operation. The washing machine comprises: an outer casing that forming the appearance (100); a wash cylinder (151) inside the outer casing (100) and is used to contain washing water (151); a suspension device (130) that makes the washing move up and down and at least one side of the washing dip in the washing water (152) in the wash cylinder (151); and an up-down driving element (110) that drives the suspension device (130) up and down. When the washing machine of the invention is used in clothes washing, the washing does not twist together so that inconvenient operations needed to separate the washing by the user can be reduced; meanwhile, friction between the washing in the washing machine and the washing tank when revolving can also be reduced so as to avoid damage to the clothes washed.

The invention discloses a pressure-control drilling system utilizing an automatic shunt manifold for pressure-control drilling and a corresponding pressure-control drilling method. The pressure-control drilling system comprises a drilling spool, a rotary control head, a drilling column, an automatic shunt manifold, an automatic throttle manifold and a throttle manifold; the drilling spool, the rotary control head and the drilling column are arranged at a wellhead at the upper part of a mineshaft; and the automatic shunt manifold, the automatic throttle manifold and the throttle manifold respectively communicate with the drilling column, a by-pass pipeline of the rotary control head and a by-pass pipeline in the blowout direction of the drilling spool. Due to the arrangement ways of all the manifolds and the mutual opening/closing matching between hydromatic valves and check valves arranged on all the manifolds and the utilization of a drilling fluid pump equipped for a drilling crew at present, the pressure-control drilling operation is realized; and through controlling the automatic shunt manifold for pressure-control drilling in connection making and tripping processes, the fluctuation of bottom hole pressure can be reduced, the control capacity for the bottom hole pressure can be improved, the no-drilling time can be shortened, the drilling cost can be reduced, and the operation incapability caused by a fault of a pressure return pump can be avoided.

A nickel polymetallic ore separation technology includes the steps of crushing and screening raw ore with the granularity ranging from 300 mm to 500 mm so as to obtain fine ore with the granularity ranging from 10 mm to 15 mm; grinding the fine ore with the granularity ranging from 10 mm to 15 mm prior to classification so as to obtain ore pulp with 70% of -200-mesh ore; adding citric acid into the ore pulp with 70% of -200-mesh ore, adding CMC, composite xanthate and No.2 oil sequentially, stirring uniformly, performing rougher flotation, concentrating twice to obtain final concentrate, and scavenging for three times so as to obtain final tailings. The nickel polymetallic ore separation technology has the advantages of less operation, high recovery yield, high product indexes, less chemical consumption and higher economic benefit.

A monitoring system indicating the condition of a plant at any time and from any place by particularly utilizing a small graphical content such as the display of a handy cellular phone. In particular, necessary equipment information can be quickly extracted from among many pieces of equipment to be monitored in a large-scale plant including a lot of monitored objects. The monitoring system includes a structured equipment information storage part for storing structured equipment information including equipment information on pieces of equipment and relational information describing relations among the pieces of equipment, and a monitored equipment extraction part for extracting a set of pieces of related equipment information associated with a piece of equipment of interest based on the structured equipment information with the equipment of interest, which is separately designated, being set as a base point of extraction.

The invention discloses a mining system and a mining method for a high-dipping super-high seam shortwall working face. The mining system comprises a coal cutter, an operating floor for controlling the coal cutter, a coal seam data acquisition subsystem for acquiring coal seam roof change data according to the geological condition of the working face, and a main control computer. The mining method comprises the steps of acquiring reference trajectory data of a rocker arm in a primary circulation coal mining working process of the coal cutter by the operating floor; acquiring the coal seam roof change data according to the geological condition of the working face by the coal seam data acquisition subsystem; receiving the reference trajectory data and the coal seam roof change data by the main control computer, and calculating planned trajectory data of the rocker arm according to the reference trajectory data and the coal seam roof change data; receiving the planned trajectory data by the operating floor, and controlling the coal cutter to perform mining operation according to the planned trajectory data. The mining system and the mining method can automatically adapt to geological condition change, and are also suitable for the high-dipping super-high seam shortwall working face.

The invention relates to a method for manufacturing a seaweed seed bottom laying layer. The method comprises the steps that seaweed seeds are collected and pretreated; the pretreated seaweed seeds and a matrix are uniformly mixed to form a mixture; net cloth is selected as a bottom laying layer net frame and folded to form the double-layer bottom laying layer net frame, and the double-layer bottom laying layer net frame is sewn with twine in an equally spaced mode so that multiple interlayers of the double-layer bottom laying layer net frame can be formed; the interlayers of the net frame are filled with the mixture from the open end of the net frame, the open end is sewn with twine, and then the seaweed seed bottom laying layer is formed; the manufactured seaweed seed bottom laying layer is placed in a water tank, transported to a bottom laying site and directly put into the sea. Materials adopted in the method are all natural materials and can gradually degrade after being planted underwater without causing secondary pollution to the environment. The method facilitates planting, laying, management and maintenance of seaweed.

A systematic method for transporting goods by train features that after the goods is loaded on the trucks designed specially, these trucks can run onto the railway flatcars by thermoselves, and after the railway flatcars reach their destination, said trucks can run down to ground by themselves and then to respective destinations.

An electric pump protector for the sand production oil well is composed of an external pipe and an internal pipe, which are connected by an upper jointer and a lower jointer, a short centralizing jointer connected to lower end of internal pipe and in contact with external pipe for blocking the lower end of internal pipe and centralizing it, at least one nozzle on internal pipe, and at least one gas-oil flowing slot on the upper part of internal pipe.

The invention discloses an echelon mounting method of an oversized plane multi-layer steel truss electronic workshop steel structure. The echelon mounting method comprises the following steps that (1), division of a plane hoisting area and a hoisting unit is conducted, specifically, hoisting equipment is selected according to the maximum weight of a hoisting component, construction areas are divided according to the rotating radius of the hoisting equipment, construction is conducted simultaneously in the longitudinal direction from the middles of the construction areas; (2), a first section of frame column is mounted in each construction unit in each construction area; (3), second section of frame columns and third to fourth layers of main steel trusses and third to fourth layers of secondary steel trusses corresponding to the second section of frame columns are mounted; (4) a third layer of main beams, a third layer of secondary beams, a fourth layer of main beams and a fourth layerof secondary beams are mounted; (5), third section of frame columns and fifth to sixth layers of main steel trusses and fifth to sixth layers of secondary steel trusses are mounted; (6), a fifth layerof secondary beams and a sixth layer of secondary beams are mounted; and (7), a fifth layer of hoisting keels and a sixth layer of purlines are mounted, and accordingly mounting of the oversized plane multi-layer steel truss electronic workshop steel structure is completed.

The invention relates to a high-concentration pressure feeding continuous in-bulk system which comprises a feeding device and a dust-extraction unit. The feeding device comprises a high pressure sending tank (1), an air compressor (2), a pressure feeding pipe and a tank car inlet cover (9) at the top of a carriage of a flour in-bulk tank car; and one end of the pressure feeding pipe is connected with the high pressure sending tank (1) and the air compressor (2), the other end of the pressure feeding pipe is provided with a double-way crossed inclined type feeding pipe assembly, the double-waycrossed inclined type feeding pipe assembly extends into the carriage of the flour in-bulk tank car through the tank car inlet cover (9) and is close to the top position in the carriage of the flour in-bulk tank car. Compared with the prior art, the high-concentration pressure feeding continuous in-bulk system has the beneficial effects that high-concentration powder pressure feeding manner is adopted, loading is efficient, the filling rate is high, gas consumption is small, material and has separation is easy, the flour in-bulk tank car does not need to be moved secondarily, the number of middle links of loading is greatly reduced, the loading time is greatly saved, and operation safety is greatly improved.

The invention belongs to the technical field of subway tunnel shield construction, particularly relates to a construction method for shield launching by a short sleeve, and solves the problems that during the shield launching of existing tunnel construction, tunnel doors are sealed by traditional tunnel door rubber curtain cloth plates and tunnel door pressing plates and water tightness of the tunnel doors and establishment of effective soil pressure in soil bins during shield launching cannot be ensured. The short sleeve comprises a short sleeve guide ring and a sealing steel ring. Accordingto the construction method, the short sleeve guide ring, the sealing steel ring and a guide ring concrete ring frame beam are combined and connected for shield launching. Compared with traditional endjet grouting reinforcement, the method has high construction speed, and can realize effective sealing of shield construction without pipeline relocation and traffic relief, and the situation that development of shield construction is restricted by the shield launching for a long time is redefined.

The invention relates to an ultrasonic beneficiation method which comprises the following steps of: (1) adding water into a container containing crushed raw ore material until the water level is higher than the surface of the material; (2) inserting an ultrasonic vibration plate into the material water, and starting ultrasonic equipment to carry out ultrasonic treatment on the mineral aggregate; and (3) screening the mineral aggregate after the ultrasonic treatment so as to obtain tailings above the screen and concentrate below the screen, wherein if the obtained concentrate contains ferric magnetic minerals, a magnetic separator is used for separating the ferric magnetic minerals so as to further improve the target mineral concentrate grade and simultaneously obtain iron concentrate. The ultrasonic beneficiation method provided by the invention has an optimal effect on treating quartz type weathered sand tin ore. In the invention, the ultrasonic treatment is adopted as main operation aided with few routine works of screening, filtering and magnetic separation, process flows are short, works are few, the operation is relatively simple, target minerals can be quickly enriched, a large number of tailings can be eliminated simultaneously, and the obtained concentrate has the advantages of high enrichment ratio, large treatment capacity, low production cost, no adoption of beneficiation reagents and no pollution on the ambient environment, thus the beneficiation method provided by the invention is a new environment-friendly high-efficiency beneficiation method.

The invention discloses an automatic workover rig driven by power grid. A derrick front support, an electric control room and a hydraulic system are arranged at the front end of a self-propelled chassis of equipment, an electric air compressor, a multi-gear variable-speed winch and a deadline anchor are arranged in the middle of the self-propelled chassis, an operation room, an air storage tank and a derrick rear support are arranged at the tail of the self-propelled chassis, a working platform is arranged on a wellhead at the tail part of the self-propelled chassis, a tubular column storage device is connected with a tubular column conveying device and is vertically arranged on one side of the upper end surface of the working platform, one end of a steel wire rope is connected with the multi-gear variable-speed winch and the deadline anchor, the other end of the steel wire rope is connected with a grabbing system after bypassing a crown block pulley block, and the grabbing system is used for grabbing a tubular column. According to the automatic workover rig driven by the power grid, various matched devices and systems are connected with respective control systems, workers only need to conduct whole-process monitoring in a driller control room in the whole workover operation, and full-automatic operation of wellhead tubular column connection, buckling, screwing-on and screwing-off and tubular column feeding and discharging operation platforms is achieved.