118results about How to "Solve world problems" patented technology

The invention discloses a method for controlling transverse thickness difference of medium-low grade electrical steel; hot rolling electrical steel with 2.0-3.0mm of thickness is rolled in a decoiling unit for uncoiling and double-cutting a shearing head, after the electrical steel is welded with the last strip coil by a pinch roll welding machine, the electrical steel is stretched by a stretching-bending straightener and is descaled, and the plate type is improved, and then acid-washing, hot rinsing and drying are carried out, and side shearing is carried out by a trimming machine and then rolling is carried out by feeding into a four-rack six-roller tandem rolling unit through an entry looper of a rolling mill. The working roll shifting, working roll bending force, middle roll bending force and roll crown crown of all racks of the tandem rolling unit are controlled, and the rolling mill tensile force, screw down rate, rolling pressure and the rack tensile force of all racks are controlled, strip steel which is rolled by the last rolling mill of the tandem rolling unit is coiled after being sheared, the coiling tensile force is controlled, and the coiled electrical steel coil is delivered to the designated plate for storage. The control method solves the difficult problem that the transverse thickness difference of the electrical steel is hard to control, and the equipment investment and the production cost are saved, thereby having promotional value.

A collagen fibre for adsorbing and separating tannin is prepared from animal skin through preparing collagen fibre membrane or granular collagen fibre, proportionally adding it along with the aqueoussolution of cross-linking agent to the reactor, reacting at 10-45 deg.C for 0.5-5 hr, regulating pH value to 4-8.5, reacting at 20-50 deg.C for 2-4 hr, laying aside, filtering, washing with deionizedwater and drying at 60 deg.C for 12-24 hr. It has high adsorption selectivity to tannin.

The invention relates to a blocked-grass lower-poking and upper-cutting mechanism for cleaning a grass discharging passage of a hand mower. According to the blocked-grass lower-poking and upper-cutting mechanism, a lower poking mechanism is mounted on a rear shaft of the bottom of the mower, and meanwhile, an upper cutting mechanism is mounted at a grass discharging port of the grass discharging passage of the mower; the lower poking mechanism contains grass discharging blades (j1) and direction-changing bevel gears (j2), the rotating direction of a third direction-changing bevel gear is reverse to that of a first direction-changing bevel gear and that of the rear shaft, and thus, the rotating and direction changing of the grass discharging blades (j1), which are connected with the third direction-changing bevel gear and sleeve the rear shaft, are achieved; and the upper cutting mechanism contains upper cutting blades (j3) and a belt-pulley belt (j4), and a rotating shaft of the upper cutting blades (j3) is driven by the belt-pulley belt (j4). The direction-changing bevel gears are Klingen-Berg cycloidal-tooth hypoid gears. At least one of the upper cutting blades (j3) of the upper cutting mechanism of the blocked-grass lower-poking and upper-cutting mechanism for cleaning the grass discharging passage of the hand mower has a bent segment, and a curve of the bent segment is a logarithmic spiral which has the characteristic that pressure angles are equal everywhere.

The invention relates to an automatic grass discharging passage cleaning mechanism of a rear shaft of the bottom of a mower, i.e., a lawn mower which is applied to the lawn pruning of places such as courtyards, parks and road sides. The automatic grass discharging passage cleaning mechanism can be applied to multiple models such as a three-wheeled mower, a series-excited-machine electric mower and a lawn mower, wherein the three-wheeled mower is provided with a grass mowing head, and a front single wheel of the three-wheeled mower is adjusted upwards in a manner that gear engaging is carried out through turning an angle by a flat bar; the series-excited-machine electric mower is provided with a chassis, an anti-collision safeguard and a tape-function wave-disc brake; and the lawn mower comprises an anti-collision safeguard, a tape-function wave-disc brake, a grass blockage poking device and a grass crushing preventer, wherein the anti-collision safeguard is arranged at the front of a chassis of the mower, the tape-function wave-disc brake is arranged at the middle part of the chassis of the mower, and gears of the grass blockage poking device and the grass crushing preventer are driven by an electric motor. The automatic grass discharging passage cleaning mechanism is mounted on the rear shaft of the bottom of the mower. The automatic grass discharging passage cleaning mechanism of the rear shaft of the bottom of the mower comprises grass discharging blades (j1) and direction-changing bevel gears (j2), so that the rotating and direction changing of the grass discharging blades are facilitated.

A series motor electric mower with a chassis anti-colliding protector and a function wave disc brake comprises the anti-colliding protector arranged on the front portion of a mower chassis, the brake arranged in the middle of the mower chassis, a grass beating head and a winder. When outer covering rubber skin of a movable support is collided at the front so that a sliding rod of the movable support is retracted, a limit switch is triggered so as to resist collision. The function wave disc brake comprises uneven disc pieces fluctuating according to wave-shape heights so as to be favorable for braking in alternate tension with relaxation, and parameters of the function wave disc brake are formed by computer molding. The brake is further provided with an axial shaft disc of a friction block gradually lifted according to functions, a belt pulley and a radial centrifugal throwing block, wherein the belt pulley is provided with internal multiple inner teeth, and the radial centrifugal throwing block is provided with multiple arc-shaped teeth. The series motor electric mower has the advantages that the anti-colliding safety and braking effect are reinforced, mowing and grass beating are selectable, and a moving area is large.

The invention discloses a self-air-supply ash-filtering cooling silencing closable fireproof tall building with a solar warming water heater. An air supply system consists of a blind window with self-cleaned glass, a spraying water pipe, an air inlet main pipe which extends to an underground garage and then is sealed at a roof, air inlet branch pipes and valve covers which extend to each room, a stainless wind energy fan which extends from the underground garage to a place which is 6 m higher than the roof or a pipe orifice with a rain shade, an air exhaust main pipe of which the lower end is sealed, and air exhaust branch pipes and the valve covers which extend to each room. A heat preservation system consists of an internal door, windows, rolling gates which are arranged outside the windows, anti-theft fences, a heat preservation layer which is arranged on the external wall, an air relative isolation layer which is arranged outside the heat preservation layer, and a ceramic partition wall which is arranged outside the air relative isolation layer. Preferably, the solar warming water heater which is arranged on a shelf is connected with an indoor electric water heater and metal pipes under the floor to form a heat collection system. The invention has the advantages that: a livable environment which is dustless, quiet, warm in winter, cool in summer and fresh in air is created; and when a fire alarm is given, the doors, the windows, air inlet pipelines and air outlet pipelines are closed to eliminate a chimney effect, and with no need of escaping, people can wear gas masks, carry oxygen bottles and hold fire extinguishers to effectively extinguish fire.

An aerial wind-energy power-station aircraft relates to the technical field of engineering such as manufacture of power-driven aircrafts, aerial wind power and photoelectricity, aerial transportation and military affairs. The aircraft comprises an aircraft body (1) or a buoyancy lift body (20), a control system (4) and a propelling system (5). The aircraft is characterized in that the aerial wind-energy aircraft also comprises an aerial wind power generation system (2), a storage system (3) of power electric energy and a grounding and water-connecting system (6), wherein the power propelling system (5) comprises an electric propelling flight system (5.1). When the grounding and water-connecting system (6) is connected to an easy-to-connect ground object (12), an aerial fixation aircraft device (13) and a water body (14), the system stays at a stationary state and can start aerial wind-power generation. When the storage system (3) of the power electric energy is filled with aerial wind electricity, the electricity can then be supplied to the electric propelling flight system (5.1), so that flight can be driven. In this way, no fuel is consumed, and the flight can be implemented by ''aerial wind energy and wind electricity''. The aircraft has a very low cost; and by the storage system (3) of the power electric energy or the aerial fixation aircraft device (13), the aerial wind electricity with the very low cost can also be conveyed to the ground for utilization.

The invention discloses a tubular type double-annular channel double-sided heat-exchange large-flux microchannel reactor. The reactor is sheathed in a tube (2) through an isolating sleeve (3), a middle sleeve (4) is further sheathed in the isolating sleeve (3), two annular clearance microchannels are respectively formed between the isolating pipe (3) and the tube (2) and between the isolating pipe (3) and the middle sleeve (4), and the space of the annular clearances is 0.05-5mm. By adopting the tubular type annular microchannel, the section area of the microchannel is increased by orders of magnitude, the large-flux difficulty of the microchannel reactor can be solved, so that the microchannel reactor is widely applied in chemical industry, and the high-risk technology status of the currently chemical synthesis can be thoroughly changed, the safety can be greatly enhanced, and the environmental pollution can be effectively decreased.

The invention discloses an alkali residue-based cement gel material and relates to a building material of a waste composition in alkaline industry. The building material is a composition which is prepared from 40-60% by mass of alkali residues, 40-60% by mass of coal ash and 10-20% by mass of an active agent based on total mass of the alkali residues and coal ash. The alkali residue-based cement gel material is prepared by the following steps: firstly, uniformly mixing the alkali residues in required use level by a regulated mass percent and coal ash; then, adding 10-20% by mass of active agent based on total mass of the mixture; and then uniformly stirring to obtain the alkali residue-based cement gel material which is an alkali residue geopolymer prepared from large-dope waste alkali residues. The alkali residue geopolymer which replaces cement is used for related projects such as a waterproof curtain of a mine, so that not only is the defect that the cost is high and the environment is indirectly and severely polluted due to cement used in the existing gel material solved, but also a lot of waste alkali residues are effectively utilized, thereby turning wastes into wealth.

The invention relates to a tree planting method for cultivating fast growing tamarisk by breeding sterility varieties, and utilizing fertilizer and water sprout facilitation and trimming incubation technique, comprising the steps of, selecting dissociation single strain stock plant with no flower, with poor fertility, dense leaves and big leaf area coefficient, carrying out in field small sprout incubation, keeping soil moistening, thinly planting the grown sprouts, enhancing fertilizer and water management so as to accelerate growth, trimming side buds, strengthening top buds and fixing stems. The invention can be applied in heavy saline-alkali land.

The invention relates to a device and a method for nondestructively recycling chips. The device comprises a metal working table top used for bearing an intelligent card, a heating unit and a temperature control unit, wherein the heating unit is arranged below the metal working table top; the heating unit is combined with the metal working table top to heat the intelligent card; or the heating unit heats the metal working table top and is embedded in the middle of the metal working table top; and the temperature control unit is used for controlling the heating temperature of the heating unit and is connected with the heating unit. The intelligent card to be recycled is flatly laid on the working table top, the temperature control unit controls temperature value of the heating unit, the heating unit heats the metal working table top to increase the temperature of the metal working table top and soften the substrate of the intelligent card, the chip is nondestructively separated from the softened substrate of the intelligent card, and the chip taken out is encapsulated again and is put into use after electrical property tests. The device and the method can be widely applied in various fields, have high recycling rate of the chip, and can save a large amount of precious resources and capital.

A complex acid catalyst is provided, which comprises MCP, phosphorous acid, nitric acid, magnesium sulfate and potassium primary phosphate. The catalyst has moderate catalyzing condition, high catalyzing efficiency and little erosion to equipment, which also can be used in circle and solves the problem of the existing technology has strict catalyzing reaction condition, large erosion to the equipment and can't be recycled. The invention is especially suitable for the catalyst used for producing furfural by two-steps way, which not only can be used as hydrolysis catalyst during plant fiber being hydrolyzed to pentose, but also can be used as dehydratingcatalyst during pentose being dehydrated to produce furfural, therefore the invention can be used repeatedly and in circle, and is discharged with waste water as the catalyst used during the production of furfural in the existing technology, thus really realizing nonpolluting and solving the difficult problem in the production of furfural with complying with the environment-protected concept.

The intelligent lawn mower with the charging component of the automatic charging pin inserted and pulled out of the contact piece can be automatically plugged and unplugged for charging; just like a car needs a gas station, an electric lawn mower also needs a charging station, and the market needs an automatic charging pin inserted and pulled out The intelligent lawn mower with the charging assembly of the contact piece solves the problem of frequent manual charging due to the undurable battery; the left and right sides of the bottom plate laid horizontally on the ground are respectively provided with guide rails (233c The curve section of each guide rail of ) is a cubic curve, so as to reduce the impact; a section of curve of the contact surface ((234b) of the contact piece (234) is a logarithmic spiral, because the logarithmic spiral is an equiangular spiral with pressure The characteristics of being equal everywhere at the corners are beneficial to contact insertion. There are four contact pieces (234), pressure piece torsion springs (234a) and rotating shafts each, forming double doors facing each other, corresponding to the charging pins standing on the front wall in front ((233), so that the charging pin is inserted and extracted, reciprocating with this. The use of cubic curves for the guide rail and the use of logarithmic spirals for the contact surface are technical progress.

The invention provides a special unmanned helicopter for high-rise and mountain forest extinguishment, which can be loaded on a matched firefighting truck to be transported to a fire scene. The creative system design of the unmanned helicopter different from a conventional helicopter is characterized in that the helicopter carries a pipeline connected with the ground to lift off and fly in a kite string pulling mode, so that electric motors powered by cables connected with the ground can be utilized to drive the helicopter to lift off and fly, electronic control wire cables connected with the ground are utilized to drive the helicopter to fly under wired remote control, the helicopter starts to spray water and put out a fire when flying to the position requiring extinguishment, and a fire-fighting lance of the helicopter sprays high-pressure water for extinguishment through continuous water supply of a hose connected with a high-pressure water supply firefighting truck on the ground. The purpose of timely extinguishment of high-rise and mountain forest fire disasters is achieved, the worldwide problem that the high-rise extinguishment is difficult to implement due to the fact that the firefighting height of all conventional firefighting equipment is lower than 100 m is effectively solved, so that the safety of high-rise residents is guaranteed, the high-rise residents live safely, the tragedies such as U.S. 911 fire, Shanghai high-rise fire and the like do not happen again, and high-rise and mountain forest extinguishment is not difficult.

The invention discloses a cheese dyeing method for aramid yarns or aramid sewing threads. The cheese dyeing method comprises the following steps of: boiling off the aramid yarns or the aramid sewing threads subjected to cheese winding for 10 minutes by using a degreasing agent with the concentration being 3g / L and triester phosphite with the concentration being 2g / L at 90 DEG C according to a bath rate of 1:10; dissolving dyes in a dye vat and heating to 60-80 DEG C, then adding corresponding vectors into the dye vat, putting the aramid yarns or the aramid sewing threads into the dye vat after running for 5-10 minutes, then carrying out boiling dyeing for 60 minutes, raising the temperature in the dye vat to 130 DEG C after the boiling dyeing, preserving the heat and dyeing for 30 minutes, and carrying out color fixing for 30 minutes; and washing, dehydrating and drying the aramid yarns or the aramid sewing threads subjected to color fixing to obtain dyed aramid yarns or aramid sewing threads. According to the cheese dyeing method, the worldwide problem that fluorescent fiber cannot be produced by dope dyeing aramid is solved.

Provided is an electric mower provided with a logarithmic spiral brake achieving automatic braking protection and a series excitation motor. The mower is provided with the anti-collision safety logarithmic spiral brake. Four assemblies are added to a common lawn mower and comprise the support assembly of a storage battery provided with a charger and an inverter, the cutting device assembly dragged by the series excitation motor, the pipe winder assembly and the brake assembly. The mower comprises an anti-collision protector arranged at the front portion of a mower chassis, the brake arranged in the middle of the mower chassis, a grass pruning head and a pipe winder. When a front article collides with outer wrapping rubber skin of a movable support and a sliding rod of the movable support retracts, a limit switch is triggered, and anti-collision is achieved. The electric mower has the advantages that the logarithmic spiral brake achieving automatic braking protection enhances the anti-collision safety and braking effect, grass cutting and grass pruning can be selected, and the movement area is large.

The invention belongs to the safe nondestructive detection technology field, and in particular relates to a railway micro-magnetic flaw detector and an inspection method. A micro-magnetic defect magnetic charge mutation detection principle is adopted by the railway micro-magnetic flaw detector to make the defect detection realized. The railway micro-magnetic flaw detector consists of a magnetic sensor device, a signal preprocessor, an A / D converter and a computer system. The magnetic signals leaked because of defects are detected by the sensing device, converted into electric signals and input into the signal preprocessor. The signals are amplified, filtered and purified by the signal preprocessor, transmitted into the A / D converter and are transformed into digital signals. Then, digital filter, signal analysis, defect estimation, defect calculation and display record are implemented on the signals by the computer and are controlled by the computer to detect defects. The flaw inspection method is used for detecting the railway damage defect. The defect detection reliability is two times higher than a traditional nondestructive method. And the working efficiency is improved by five times. At the same time, a worldwide problem that no effective method can be used for turnout inspection at present is solved.

The invention discloses a three-wheel lawn mower having a trimmer head and being capable of heightening a single front wheel with a flat rod to rotate angle changing gears. The lawn mower adopts three wheels, and one wheel of a common four-wheel lawn mower is omitted, so that turning and reversing are more flexible. The three-wheel lawn mower is characterized in that a plurality of angle rotatable changing gears (t7j) are arranged on the wheel carrier (t7); the flat rod (t2) with a handle (t2k) is mounted on the center of a circle, wherein the rotation of the angle rotatable changing gears is based on the center; and a flange (t2j) is arranged on the flat rod (t2), so that the flat rod (t2) with the handle (t2k) can be operated to coordinate with an optional changing gear (t7j) of the angle rotatable changing gears (t7j), and a rollable single front wheel (t1) on the horizontal axis of the front wheel (t4) is heighted with the change of the height between the chassis of the lawn mower and the ground, so that the mowing height can be changed.

The invention relates to a mowing machine with a side-cutting large-width grass gathering function and an automatic-locking logarithmic spiral brake. The side-cutting large-width grass gathering function means that the mowing machine comprise a side-cutting device arranged on the two sides of the front wheels and on the edge of the cutting range of the mowing machine, such that the grass can be covered. The side-cutting device is composed of a side-cutting body (91), a side-cutting torsion spring (92), a side-cutting movable arm (93) and side-cutting trimming teeth (93d). A rotation shaft and the side-cutting torsion spring (92) are arranged on the side-cutting body (91). A side-cutting rotation sleeve (93c) is arranged on the side-cutting movable arm (93). The side-cutting rotation sleeve (93c) is movably arranged on the rotation shaft, and the side-cutting torsion spring (92) enters an assembly fixing position, such that the side-cutting movable arm (93) can be opened with a certain angle when mowing is carried out. The side-cutting movable arm (93) is also provided with the side-cutting trimming teeth (93d). The plan-view shape of the unilateral side-blade of the teeth of the side-cutting trimming teeth (93d) is a section of a logarithmic spiral with a constant pressure angle characteristic. The side-cutting trimming teeth has an arched back and a self-grinding function, such that slashing cutting and sliding cutting can be facilitated. Therefore, grass gathering and trimming are both facilitated.

The invention discloses a multi-stage self-collapsing closed headwork and belongs to the technical field of hydro project headworks. The multi-stage self-collapsing closed headwork can resist flood exceeding the designed level, is simple in structure, convenient to implement and low in construction cost and does not occupy space permanently. The problem that headworks are damaged by flood exceeding the designed level is solved through the disaster prevention and mitigation design theory of the multi-stage self-collapsing closed headwork. The structure of the multi-stage self-collapsing closed headwork comprises a flood discharge bottomland (2-2), an earthy embankment (3), a geotechnical synthetic material armour earthy flood diversion dyke (4), a geotechnical synthetic material protecting multi-stage self-collapsing earth embankment (5), an intake gate (6), a barrage gate (7), a rockfill dam (8), an earthy barrage (9), flood diversion farmlands (10), a gulch (11), rope system non-woven fabric grid bands (12) and a rope system non-woven fabric bottomland locking penetrating band (13). The structure is suitable for closed headworks with the bottomland, headworks with rockfill dams, open headwork bottomland treatment and headworks with flood exceeding the designed level outside the embankment farmland for flood diversion.

The invention provides a copper-aluminum abutting and lap joint type conducting bar. The conducting bar comprises an aluminum bar (1), copper bars (2) and a lap joint aluminum bar (4), wherein the aluminum bar (1) is positioned in the middle; the copper bars are connected to two ends of the aluminum bar (1); the shape and size of the section of the aluminum bar (1) are consistent with those of the sections of the copper bars (2); the lap joint aluminum bar (4) which is as wide as the aluminum bar (1) is connected to the lower surface of the aluminum bar (1); two ends of the lap joint aluminum bar (4) are longer than a part (3) in which the aluminum bar (1) is connected with the copper bars (2); the exceeded part (41) of the lap joint aluminum bar is connected with the lower surfaces of the copper bars (2) at the two ends of the aluminum bar (1). The conducting bar is the most economic copper-aluminum abutting or lap joint type conducting bar which replaces the copper with the aluminum and is high in conductivity, small in resistance, safe and reliable and long in service life; the section of the conducting bar is flat, rectangular or rounded rectangular.

The improved intelligent lawn mower with automatic charging pin insertion and extraction of the contact piece assembly can be automatically plugged and unplugged for charging; the pin ball (233a) provided at the root of the charging pin (233) is provided with a cross pin on the spherical seat, It solves the problem of reliable plug-in and plug-in charging with micro-volume follow-up. Just as a car needs a gas station, an electric lawnmower also needs a charging station. The curve section of each guide rail of the base plate laid on the ground surface is a cubic curve, so as to reduce the impact; the contact surface of the contact sheet (234) (234b) A section of curve is a logarithmic spiral, because the logarithmic spiral is that the equiangular spiral has the characteristics that the pressure angle is equal everywhere, which is beneficial to contact insertion. There are four contact pieces (234), pressure sheet torsion springs (234a) and rotating shafts. Form face-to-face double doors, corresponding to the charging pin ((233) standing on the front wall in front, so that the charging pin is inserted and pulled out, reciprocating in this way; the guide rail uses a cubic curve and the contact surface uses a logarithmic spiral .

Provided is a mower with the functions of irrigating, fertilizing, pesticide spraying and automatic anti-collision logarithmic spiral braking. The mower is a multifunctional mower provided with an anti-collision safety logarithmic spiral brake and a pipe winder with a liquid pipe for irrigating, fertilizing and pesticide spraying. Four assemblies are added to a common lawn mower and comprise the support assembly of a storage battery provided with a charger and an inverter, the cutting device assembly dragged by a series excitation motor, the pipe winder assembly achieving the functions of irrigating, fertilizing and pesticide spraying, and the brake assembly. The functions of irrigating, fertilizing and pesticide spraying are added, the use range is wide, and the movement area is large. Liquid fertilizer used for fertilizing and contained in the pipe of the pipe winder is obtained by adding soluble fertilizer to water percentagewise. Alternatively, liquid fertilizer used for pesticide spraying and contained in the pipe of the pipe winder is obtained by adding soluble pesticides to water percentagewise.

The invention discloses a reinforced environment-friendly carbon electrode which is composed of the following components in percentage by weight: 25-35% of granular electrical calcined anthracite, 14-20% of coal pitch, 10-20% of granular graphite material, 25-35% of powdery calcined coke and 1-10% of carbon fiber material. The electrical calcined anthracite and the graphite material are uniformly distributed in the sizing material formed by the coal pitch and powdery calcined coke. The carbon electrode disclosed by the invention has greatly higher performance indexes and quality than a common carbon electrode, has the advantages of very high tensile strength and favorable thermal shock resistance, greatly lowers the rupture accident in the submerged arc furnace smelting process, and enhances the production efficiency of users.

The invention provides a device and system for expelling cloud and rain (snow). The invention is characterized in that a control system (2) controls a signal emitter (1) to transmit towards a cloud layer (4) target according to the cloud layer position information and the like of a positioning system (3), so that the cloud layer (4) or small raindrops about to be formed produces physical effect and chemical effect and returns to disperse state and floating state, thus stopping raining (snowing).

The invention relates to a lawn mower used for trimming lawns in gardens, parks, and roadsides, and other places. Three wheels are used, and one wheel in an ordinary four-wheel lawn mower is removed, so steering and back-up are more flexible. The three-wheel lawn mower which uses a grass cutting head flat pole to heighten a front single wheel through rotation angle gears is a series excited machine electric lawn mower with a chassis anti-collision protector and a zonal function wave disk brake. The three-wheel lawn mower comprises an anti-collision protector which is arranged on the front part of a mower chassis, a zonal function wave disk brake on the middle part of the lawn mower chassis, and a grass-pushing anti-blockage device and grass breaking preventer which uses motors to drive gears.

The invention discloses a tubular type annular channel double-sided heat-exchange large-flux microchannel fixed bed reactor. The reactor is sleeved in a tube (2) through a catalyst pipe (3), a middle sleeve (4) is sleeved in the catalyst pipe (3), a double-annular clearance microchannel is formed between the catalyst pipe (3) and the tube (2) and another double-annular clearance microchannel is formed between the catalyst pipe (3) and the middle sleeve (4), the space of the annular clearances is 0.05-5mm, and 0.2-2mm is the best. The reactor has all the advantages of a microreactor and a filling bed reactor, the defect that pressure drop is generated to damage normal operation when the fluid of a filling bed flows in a bed layer and the difficulty that the flux of the microreactor is universally small can be solved, more than 98% of catalysts can be saved by replacing a hydrogenated reaction kettle with the reactor, the temperature of the bed layers of the reactor is even, and the defect that the fixed bed reactor easily generates temperature runaway can be overcome.

The invention relates to a medicinal liquor for treating prostatitis and process for preparation, wherein the liquor is prepared from Chinese medicinal herbs including eucommia bark 8g, fruit of barbary wolf berry 10g, Chinese angelica root 8g, climbing fern spore 15g, dried rehmannia root 7g, pubescent angelica root 8g, ichih fruit 8g, Siberian solomonseal rhizome 15g, pricklyash peel 5g and deglued antler powder 15g.

The invention relates to a lawn mower used for mowing lawns in courtyards, parks, and sides of roads, and other places. The lawn mower has three wheels, and reduces one of four wheels in a conventional four-wheel lawn mower, so turning and back-up are more flexible. The three-wheel lawn mower which has rotation angle in-gears of a grass head hitting flat rod to turn up a single front wheel is a series excited machine electric lawn mower having a chassis anticollision safety brake with a function wave disk. The lawn mower comprises an anticollision protecting device arranged on the front part of a lawn mower chassis, a brake with a function wave disk, the brake being arranged on the middle part of the lawn mower chassis, and a grass blocking pulling device and a grass shatter prevention device controlled by a remote stay cord.

The invention provides a cold starting system of an alcohol fuel engine. The cold starting system comprises an alcohol fuel supplying system, a cold starting fuel supplying system, an oil track and a control system. The cold starting fuel supplying system is communicated with one end opening of the oil track. The alcohol fuel supplying system comprises an oil inlet pipeline and an oil returning pipeline which are both communicated with the other end opening of the oil track. The control system controls opening of the alcohol fuel supplying system or the cold starting fuel supplying system and controls delaying closing of the oil retuning pipeline in the alcohol fuel supplying system when the cold starting fuel supplying system is opened. The oil inlet mode of the oil track is designed to be a two-in-one-out oil opening quick-connecting mode, the control system is used for carrying out delaying control over the oil returning pipeline, all alcohol fuel in the oil track flows back out of the oil track quickly, it can be ensured that all fuel is gasoline for starting the vehicle, mounting is quick, cost is low, production is easy, the engine is not modified, and the worldwide problem of alcohol fuel vehicle cold starting is completely solved.