500results about How to "Reduce descent speed" patented technology

The invention relates to a forest fire extinguishing device, which comprises a fire extinguishing agent bin and a parachute bin. A micro-explosion dispersion device is arranged at a central position of the fire extinguishing agent bin; the periphery of the micro-explosion dispersion device is provided with the fire extinguishing agent; the periphery of the fire extinguishing agent is encapsulatedwith a cartridge case which is connected with the parachute bin; a temperature sensor and a control circuit are also arranged in a fire extinguishing bomb, wherein the temperature sensor and the micro-explosion dispersion device are connected with the control circuit through leads respectively; the fire extinguishing agent bin is a primary functional bin; and a parachute slows down the descent speed of the fire extinguishing bomb so that the fire extinguishing bomb descending slowly feeds temperature data reaching a set threshold back to the control circuit when landing on the upper part of the flame of a crown fire in combination with the temperature sensor, the micro-explosion dispersion device and a temperature control system of the micro-explosion dispersion device, and then the control circuit controls the micro-explosion dispersion device to generate an explosion to disperse the fire extinguishing agent, thereby highly-efficiency extinguishing the crown fire in a short range.

The invention discloses a backpack type emergency survival device which comprises a hollow non-closed spherical airbag and an air supply device in an airbag, wherein the air supply device charges a sandwich of the airbag by a charging connector on the inner wall of the airbag; and the airbag body is provided with a plurality of ventilation holes through which the inner cavity of the airbag is communicated with the outside. The emergency survival device has simple structure, is easy to carry, can be used as survival equipment under the emergency condition and is widely applied to aloftwork operation, sailing, exploration, earthquake, flood and other natural disaster environments.

The invention discloses an antiseptic which is composed of perilla leaf essential oil, cinnamon essential oil and Chinese ilex essential oil and also discloses an egg film fresh-keeping agent especially a naturally-emulsified egg film fresh-keeping agent, and its preparation method, wherein the egg film fresh-keeping agent is composed of plant oil, a film forming agent, an emulsifier, a preservative and water. The antiseptic of the invention treats the plant essential oils as raw materials and has a good inhibition effect on Escherichia coli, salmonellas and the like. The egg film fresh-keeping agent of the invention, which adopts natural raw materials and has the advantages of good fresh keeping effect and high safety when it is applied to egg films, can effectively prevent the loss of water in eggs, and yolk dispersion, inhibit microbial invasion, prevent the rancidness of eggs, and effectively prolong shelf lives of the eggs.

A diagonal brace type shock absorber for an automobile engine, comprising an upper mounting base and a lower mounting base, a support column is fixedly connected in the middle of the lower side of the upper mounting base, and a plurality of first A hinge; the upper side of the lower mounting seat is fixedly connected with a vertical sleeve, the bottom of the vertical sleeve is evenly connected with several horizontal sleeves, the horizontal sleeve is fixedly connected with the first magnetic pole, and the opposite surface of the first magnetic pole is provided with The second magnetic pole, the first magnetic pole and the second magnetic pole are connected by a first return spring, one side of the second magnetic pole is fixedly connected with a moving column, and the other end of the moving column is provided with a second hinge, the first A diagonal brace is rotatably connected between the hinge and the second hinge; several rubber pads are fixedly connected between the horizontal sleeve and the upper mount. The invention has the advantages of reasonable structural design, convenient use, good damping effect and the like, and is suitable for engine installation.

The invention is a magnetic damping life apparatus which includes shell, spool, insurance ropes and driving device. The spool support on the shell through rotation shaft, one end of insurance ropes is fixed and wound on the spools. Said magnetic damping life apparatus also includes electrical and mechanical conversion device and energy receiving device, the spool drives the electrical and mechanical conversion device through the driving device, electrical and mechanical conversion device transforms the mechanical energy into electrical energy which is received by the receiving device to increasing the safety and practicality of magnetic damping life apparatus.

Characters of the invention are as followings: assembled battery includes positive plate composed of compounds Ni(OH)2 and Co(II), and metal Co; in room temperature, or higher than room temperature, batteries are laid aside; next, precharging battery by using current density less than and equal to 20mA / cm2 based on area of positive plate as reference; then, batteries are laid aside in late stage in room temperature, or higher; afterwards, carrying out constant current charge for second time, and then discharging; carrying out constant current charge for second cycle, which includes two segments of constant current charge; finally, carrying out constant current charge for third cycle identical to the said second cycle. The invention raises consistency of quantity of converting cobalt, reduces AC internal resistance and DC internal resistance of battery, delays lowering OCV speed from 15%-20% to 5% of capacity attenuation when battery is laid aside at discharging state.

The invention provides a carbon-based catalyst desulfurization and denitrification system and method. The carbon-based catalyst desulfurization and denitrification system comprises a fume system (A), a desulfuration adsorption system (B), a denitrification adsorption system (C), a carbon-based catalyst conveyer system (E), a nitrogen system (F), an ammonia gasification dilution system (G), a cooling water system (I), a carbon-based catalyst regeneration system (D) and an air heating system (H), wherein all the systems are connected through a pipeline. Boiler fume enters a chimney to be discharged after reaching the standard by being processed through the carbon-based catalyst desulfurization and denitrification system, the adsorbed carbon-based catalyst is heated, desorbed and regenerated and then returns to an adsorption tower, and high-concentration SO2 obtained through desorption is used for resource recovery. According to the system, SO2 and NOx are removed through two-stage movement adsorption, adaptability to the fume condition characterized in high sulfur content, variable sulfur content and large fume amount change is high, and the foundation can be laid for large-scale application and popularization of the carbon-based catalyst fume purification technique in the thermal power industry.

The invention discloses a safe environmental-protection ore cleaning device. The safe environmental-protection ore cleaning device comprises a feeding pipe, a box, a water inlet pipe, a pressing device, a water storage tank, a water pumping pipe, an extension rod, a filter plate, an impeller, cleaning shafts, turntables, a discharge pipe, brushes, a timer and a rotating shaft; the feeding pipe isarranged at the top end of the box; the box is provided with a liquid level meter; the water storage box communicates with the box through the water inlet pipe; the pressing device is mounted on the water inlet pipe; the rotating shaft is arranged in the box; the impeller is mounted on the rotating shaft; multiple cleaning shafts are arranged on the inner wall of the box; the turntables are arranged on the cleaning shafts; the brushes are arranged on the surfaces of the turntables; the filter plate is arranged in the box; the bottom surface of the filter plate is connected with the bottom endof the box through the extension rod; one end of the water pumping pipe is connected with the water storage tank, and a water filter screen is arranged at the other end of the water pumping pipe; thedischarge pipe is arranged on the side wall of the box; and a ultraviolet ray lamp is arranged in the box. The safe environmental-protection ore cleaning device accelerates the cleaning speed, improves the working efficiency, saves resources, realizes disinfection and sterilization, prevents wastes, is simple in structure and convenient to use, and facilitates popularization.

The invention provides an air conditioner control method and an air conditioner. When the air conditioner is in the refrigeration mode, an inner unit electronic expansion valve is subjected to proportional adjusting according to the target superheat degree of an indoor unit, and the inner unit target superheat degree is changed correspondingly along with changing of the indoor environment temperature, changing of the set temperature and changing of the outdoor temperature. Accordingly, the control precision of the indoor environment temperature is improved, and the starting frequency of a compressor is decreased.

The invention belongs to the technical field of iron and steel metallurgy and the field of gas-solid heat exchange or thermal reaction, and relates to a suspended reduction process of iron-containing materials and a secondary suspended reduction furnace device for implementing the process. In the injection reducing furnace, the gas phase and the solid phase flow upwards in parallel and the gas phase and the solid phase are in full contact, with large heat-transfer coefficient and large mass-transfer coefficient, so that the iron-containing materials are reduced and dried quickly and the retention time of material granules in the system is greatly shortened. The heat efficiency of the system is greatly increased. The thermal loss is reduced below 1800 kilocalories per kg of reduced iron-containing materials. The suspended reduction process has the advantages of high system stability, compact equipment installation, small size, low investment, high production capacity, high product metallization rate, controllable metallization rate within the range from 85% to 97%, and uniform product quality.

The invention discloses a telescopic type emergency escaping device for high-rise buildings, which comprises a safety screen (2) and a slide rail (1) arranged in the safety screen (2), wherein a hanging bracket (3) and a control device arranged in the hanging bracket (3) are arranged at top broadside of the high-rise building. The safety screen (2) comprises inner and outer two layers which are sleeved mutually; the slide rail (1) is distributed between the inner and outer layers of the safety screen (2) in spiral manner from up to down; and the inner broadside of the slide rail (1) is connected to the inner layer of the safety screen (2) while the outer broadside is connected to the outer layer of the safety screen (2). The telescopic type emergency escaping device for high-rise buildings is characterized in that both the inner wall of the outer-layer safety screen (2) and the outer wall of the inner-layer safety screen (2) are provided with protection pads for protecting the safety of people. By using the telescopic type emergency escaping device for high-rise buildings, when accident disaster happens, people can conveniently escape by opening the arranged telescopic type slide rail. The telescopic type emergency escaping device for high-rise buildings is convenient, quick and reliable to use.

The invention discloses an advanced treatment and reuse method of a pre-coated membrane of tail water of a sewage plant. The method comprises the following steps: firstly, feeding tail water into an adjusting pool so as to be homogenized, and then passing through a sand filter; passing through an ultrafiltration membrane by a solution containing a pre-coated membrane material and sand filtered effluent and effectively forming a dynamic membrane on the surface of the ultrafiltration membrane, wherein concentrated water of the ultrafiltration membrane returns to the adjusting pool while the effluent enters into a middle water tank; backwashing the ultrafiltration membrane through a pump by part of water in the middle water tank periodically, wherein the pre-coated membrane automatically falls and the sediment of the coating material is recycled to a pre-coated membrane material dosing device repeatedly, so that the operating cost is lowered; entering into reverse osmosis membrane treatment by water in the middle water tank, fresh reverse osmosis membrane is used as industrial water in the park to be returned, and the concentrated water is treated by an electrochemical reactor, and the effluent reaches the standard to be discharged. By adopting the pre-coated membrane method, the ultrafiltration backwashing frequency is low, and the water yield of the ultrafiltration membrane is improved. Loose filter cake layers with great holes can be formed to effectively relieve the rate of descent of membrane flux, improve the anti-pollution capacity of the membrane and improve the removal effect of the membrane on the water quality index at the same time.

The invention provides a feeding bin of an adsorption column, comprising a bin body (42) and a first tapered diversion block (45) opposite to a feeding hole (41) of the bin body (42); the inner wall of the bin body (42) is provided with a plurality of chutes (43) spirally extending from the top to the bottom of the bin body (42); diversion slits opposite to inlets of the chutes (43) are formed between the first tapered diversion block (45) and the inner wall of the bin body (42); and the bottom of the bin body (42) is provided with a plurality of discharging holes (46) communicated with a distribution pipe (10) of the adsorption column and linked with outlets of the chutes (43). By using the feeding bin provided by the invention, the falling loss in the active carbon filling process is reduced. The invention also provides an adsorption column with the feeding bin.

A high altitude escape device comprises a mooring rope and a speed controller; wherein the speed controller is arranged on the surface of the mooring rope, the mooring rope is suspended in the sky by a pulley to form two up and down slip sections, one section is a no-load section is sheathed in the speed controller, and the other section is a load section and is fixedly connected with the speed controller; the speed controller comprises a shell and is internally provided with a plurality of pin shafts at intervals more than the diameter of the mooring rope; wherein a braking pin shaft is arranged above or below at least one pin shaft in a sliding way; one section of the mooring rope sheathed with the speed controller winds the baking pin shaft and the pin shafts below or above the braking pin shaft at least in a dislocation way. In the invention, friction is produced between the mooring rope as well as the pin shaft and the braking pin shaft by dislocation winding of the pin shaft and the braking pin shaft in the no-load section of the mooring rope and the speed controller, thus achieving the effect of reducing the descent speed of the speed controller. The no-load section of the mooring rope winds the pin shaft of the speed controller in the dislocation way, so that friction is produced between the mooring rope and the pin shaft, thus achieving the aim of reducing the descent speed of personnel evacuation.

The invention discloses a liquid rocket. The liquid rocket comprises a first sub-stage of the rocket, a power tail cabin section, a parachute bag and an explosion separation structure, wherein the power tail cabin section is connected with the first sub-stage of the rocket through the explosion separation structure; an explosion separation surface is positioned between the bottom of a storage tankof the first sub-stage of the rocket and the power tail cabin section; the parachute bag is arranged on the power tail cabin section in a folding manner; after separation of the first sub-stage of the rocket, the explosion separation structure is detonated, so that the power tail cabin section is separated from the bottom of the storage tank along the explosion separation surface; and the parachute bag is opened to reduce the descending speed of the power tail cabin section. Compared with the prior art, the structure has the advantages of convenience in control, safety, reliability, low costand the like; and after the power tail cabin section is recycled, the power tail cabin section can be overhauled, tested, cleaned and reused.

PROBLEM TO BE SOLVED: To provide a parking vehicle fixing device capable of detecting an artificial illegal escape by preventing damage to the device, when a strong external force is applied to a rising vehicle stopping panel, by relieving an impact when touching a vehicle bottom surface when the vehicle stopping panel rises in response to the aboveground lowest height of each vehicle, while simplifying the device by uplifting and letting down the vehicle stopping panel by one cylinder. SOLUTION: A rack 21 is advanced by delivering a rod 14 of an air cylinder 13, and the vehicle stopping panel 80 is uplifted by rotating a pinion 22. In an uplifted position, a ratchet 32 meshes with a ratchet wheel 31, and the vehicle stopping panel 80 is held. The vehicle stopping panel 80 is let down by removing the ratchet 32 from the ratchet wheel 31 by operating a ratchet release connecting means 40 by retreating the rod 14 of the air cylinder 13. COPYRIGHT: (C)2005,JPO&NCIPI

The invention discloses a slideway type automatic coin sorting packaging machine based on an overturning effect. A preset coin sorting device is relatively complex and too expensive for small and medium-sized shops. The slideway type automatic coin sorting packaging machine comprises a coin output device, a coin sorting device and a coin counting and packaging device; a 1-yuan collecting notch, an old-version 1-jiao collecting notch and a 5-jiao collecting notch are arranged at one side of the output end of a sorting slideway in the coin sorting device; a 1-yuan overturning baffle, an old-version 1-jiao overturning baffle and a 5-jiao overturning baffle are arranged at the tops of the 1-yuan collecting notch, the old-version 1-jiao collecting notch and the 5-jiao collecting notch respectively; the coin counting and packaging device comprises a coin counting slideway, a photosensitive sensor, a collecting rotation disk and a coin stopper ring; a support of the coin stopper ring is driven by a motor, and the top of the support penetrates the coin counting sideway and is coplanar with the slideway surface of the coin counting sideway; the photoelectric sensor is arranged at the rear end of the coin stopper ring; and the collecting rotation disk is arranged at the output end of the coin counting slideway. The slideway type automatic coin sorting packaging machine is low in cost and more portable.

The invention discloses a hydraulic filling type central air-conditioning unit and belongs to the technical field of central air-conditioning. The hydraulic filling type central air-conditioning unit comprises a compressor, a condenser, an expansion valve, an evaporator and a control unit for controlling a machine unit to run and further comprises a bypass pipe enabling a high-pressure refrigerant in the condenser to be led into the evaporator. The bypass pipe is provided with a solenoid valve controlling on-off of the bypass pipe, the evaporator is provided with a temperature sensor for detecting outflow water temperature, and the temperature sensor and the solenoid valve are electrically connected with the control unit. When the temperature of outflow water of the evaporator is larger than a set value, the compressor and the expansion valve are turned off, the high-pressure refrigerant is led into the evaporator by opening the bypass pipe, evaporating temperature of the refrigerant is improved, the speed of lowering the water temperature is slowed down, water in the evaporator is kept flowing continuously, the compressor and the expansion valve are restarted until the water in the evaporator reaches a certain temperature, and accordingly freezing of the evaporator is avoided.

The invention discloses an aloe extract and application thereof. A preparation method for the aloe extract comprises the following steps: (1) weighing and crushing aloe, soaking the crushed aloe with an aqueous ethanol solution having a concentration of 50 to 100% and accounting for 5 to 15 times of the crushed aloe, then carrying out reflux extraction several times, wherein extraction lasts for 1 to 5 h each time, carrying out filtering to obtain ethanol extracts and filter residues, combining the ethanol extracts, carrying out standing for 12 to 48 h, removing sediments through filtering and recovering the solvent to obtain a crude extract; (2) dissolving the crude extract with water, introducing the dissolved crude extract into a macroporous adsorption resin column, carrying out washing and desugaring, then carrying out elution with the aqueous ethanol solution having a concentration of 50 to 100%, collecting ethanol eluate and recovering the solvent so as to obtain an extract; and (3) dissolving crude extract with water, successively carrying out extraction with dichloromethane, ethyl acetate and n-butanol accounting for 5 to 15 times of the dissolved extract, carrying out concentration and extraction so as to obtain a water phase and then carrying out washing with methanol until a concentrate cannot be dissolved so as to obtain the final extract. The aloe extract provided by the invention can effectively prolong the shelf life of fruit and vegetable, reduce release of ethylene gas, maintain hardness of fruit and vegetable, delay the decrease speed of chlorophyll, decrease moisture evaporation, lower low temperature damage of fruit and vegetable, retain balance between sugar degree and acidity and improve luster of fruit and vegetable.

The invention discloses a modified asphalt composition and a preparation method thereof. The modified asphalt composition comprises the following components by weight: 90%-98% of matrix asphalt, 0.2%-6% of butadiene styrene rubber, and 0.1%-4% of additives, wherein the additive is one or more than one of ethanolamine, diethanolamine or triethanolamine. The asphalt composition of the invention is strong in aging resistance, significantly improves the ductility of butadiene styrene rubber-containing asphalt in the high temperature storage period, especially delays the decrease of the ductility after thin film oven tests, is low in additive cost, and is convenient to use.

The invention discloses a high-efficient agricultural gravity paddy separating and drying device, which comprises a feeding pipe, a shell, a vibrating screen mesh, a winnowing machine, a clapboard, aflowmeter, a water inlet pipe, a drier, a return pipe and a camera. The feeding pipe is arranged on the top end of the shell; a wall lamp is arranged on an outer wall of the shell; the vibrating screen mesh is slantways arranged in the shell; the return pipe is arranged on the lowest end of the vibrating screen mesh; the other end of the return pipe is connected with the feeding pipe; a solid transfer pump is arranged on the return pipe; the winnowing machine is arranged under the highest end of the vibrating screen mesh; the drier is arranged on an inner wall of the shell; the clapboard is arranged on the bottom end of the shell; the water inlet pipe is arranged above a dust discharging pipe; an atomizer is arranged on an outlet end of the water inlet pipe; the flowmeter is arranged on awall lamp of the water inlet pipe; and the camera is arranged on an inner wall of the top end of the vibrating screen mesh. According to the high-efficient agricultural gravity paddy separating and drying device provided by the invention, rice in the device can be prevented from leaking to cause waste, is prevented from getting mildew, and is easy to store, dust particle concentration in air is reduced, the body health of workers is prevented from being harmed, and the high-efficient agricultural gravity paddy separating and drying device is simple in structure, convenient to use and favorableto popularize.

The invention discloses a high-rise electromagnetic damping escape device. The device comprises a rescue cabin module, a speed change wheel module and a magnetic damping speed reducing piston module;the rescue cabin module comprises a left side escape well and a right side escape well, a left side escape cabin, a right side escape cabin, and buffer pads arranged at the bottoms of the escape wells; the speed change wheel module comprises a double-rail rope wheel, a rope wheel center shaft, a speed change large gear, a speed change small gear, a cam and a rope; and the magnetic damping speed reducing piston module comprises a cam connecting rod, a magnet, a copper pipe and a protective cover. The magnet performs a reciprocating motion in the copper pipe; as the continuous change of the magnetic flux can be caused by the reciprocating motion of the magnet in the copper pipe, induction current can be generated on the copper pipe by the Faraday law; through the Lenz law, the generated induction current can be associated with an induction magnetic field to act on the magnet; and the descending speed of the rescue cabin can be reduced by using resistance continuously generated by the electromagnetic induction phenomenon in less space.

The invention discloses a method for catalytically reducing selenium. According to the method, by using oxydol as a catalyst, a reducer is added into a hexavalent-selenium-containing solution to react so as to reduce the selenium into the selenium simple substance, wherein the standard oxidation-reduction potential of the reducer is lower than the standard oxidation-reduction potential in the process of converting the hexavalent selenium into the selenium simple substance. The hexavalent-selenium-containing selenic acid or selenate solution is reduced by one step to prepare the simple substance selenium product. The oxydol, which is used as the catalyst, effectively lowers the descending speed of the solution reduction potential on the premise of performing the catalytic function, so that the reduction reaction process is carried out mildly, thereby effectively preventing the selenium in the solution from overreduction to generate negatively bivalent selenium ions or compounds thereof, and solving the problems of low recovery rate and the like caused by selenium overreduction.

The invention relates to an unmanned aerial vehicle with a buffering function and convenience in safe landing. The unmanned aerial vehicle comprises a main body and four flight mechanisms, and each flight mechanism comprises a flat panel, a rotor wing and a supporting assembly; each supporting assembly comprises a fixed block, a movable block, a slide block, a slideway, a spring, a support leg, asupport rod, a limiting frame, an air cylinder, an air pipe, a sealing plate and an air rod. When the unmanned aerial vehicle with the buffering function and convenience in safe landing lands, the springs in the supporting assemblies apply tension force to the movable blocks, and thus the opening speed of the support legs and the descending speed of the main body are reduced; meanwhile, an airbagis inflated and utilized for isolating and protecting the main body, the situation that the main body is in contact with the ground, collides with the ground and gets damaged is avoided, thus safe landing of the unmanned aerial vehicle is achieved, and the practicability of the unmanned aerial vehicle is improved.

The invention provides a jaw crusher feeding buffer device, which includes a frame, an upper guard plate, a lower guard plate, a fixed jaw assembly, a movable jaw assembly, an eccentric wheel, a toggle plate, an adjustment seat and a spring rod, and the movable jaw There is a buffer structure between the plate and the movable jaw assembly, teeth are arranged in parallel on the fixed jaw plate and the movable jaw plate, and a screening device is installed above the movable jaw assembly and the fixed jaw assembly. The screening device includes material Box, material receiving box, transmission screen and conveyor belt, the material box and transmission screen are all set above the material receiving box, the lower part of the conveyor belt near the end of the upper guard plate is equipped with a feeding buffer device, the feeding buffer device and the upper guard plate Fixedly connected, the feeding buffer device includes a buffer bucket body, a wear-resistant plate and two buffer components. The buffer components are respectively fixed on the two inner plates of the buffer bucket body. The buffer component includes a sloping plate, a wear-resistant plate, a rubber body and a support plate. The inclined plate is connected with the rubber body through a connecting shaft, and the rubber body is arranged on the side away from the inner plate of the buffer bucket; the invention has low cost and long life.

The invention discloses a method for prolong shelf life of cucumber, after harvesting cucumber, an antistaling agent is used for processing and preserving the cucumber immediately; The antistaling agent comprises the following raw materials by mass fraction: 50-65% of citric acid, 15-50% of acetylatedmono-glycerides, 5-15% of plant source natural antiseptic, 0.025-0.03% of natural color protection agent, 1-8% of nutrition intensifying agent, and 0.01-0.1% of trace element; wherein sum of mass fraction of the raw materials is 100%. The method can effectively prolong the fresh-keeping period of the cucumber, reduce the release of ethane, keep the hardness of the cucumber, delay the decreasing speed of chlorophyll, reduce moisture evaporation, reduce the low temperature damage on the fruit and vegetable, keep the balance of saccharic acid degree, reduce the browning due to scratch and block the harmful mushroom poison to prevent propagation harm, prevent mildew, and increase the luster of the fruit.

The invention discloses an air conditioning system and a defrosting control method thereof. The air conditioning system comprises a compressor, a reversing assembly, an outdoor heat exchanger, an indoor heat exchanger, a defrosting branch circuit and a heat storage assembly. In the refrigeration or defrosting process of the air conditioning system, a first valve hole is communicated with a second valve hole, and a third valve hole is communicated with a fourth valve hole; in the heating process of the air conditioning system, the first valve hole is communicated with the third valve hole, the second valve hole is communicated with the fourth valve hole, one end of the defrosting branch circuit is connected with the other end of the outdoor heat exchanger, and the other end of the defrosting branch circuit is connected with the other end of the indoor heat exchanger; the defrosting branch circuit comprises a throttling assembly and a valve body assembly, and the valve body assembly is used for controlling the on-off state of the defrosting branch circuit; and in the defrosting process of the air conditioning system, the valve body assembly starts, the defrosting branch circuit is communicated, and the heat storage assembly is opened to release heat indoors. According to the air conditioning system, the defrosting process of the outdoor heat exchanger at a low-temperature environment is accelerated, the loss of indoor heat in the defrosting process is reduced, and the comfort of a room is improved.

The invention discloses a feed additive with the effects of preventing and resisting diseases and improving meat quality and a preparation method thereof. The feed additive comprises the following raw materials in parts by weight: 40-70 parts of flos lonicerae or lonicera japonica, 5-30 parts of lonicera japonica leaves, 20-40 parts of forsythia suspense leaves, 5-20 parts of scutellaria baicalensis, 2-10 parts of pine needle, 2-10 parts of eucommia ulmoides leaves, 2-10 parts of herba houttuyniae, 0.1-5 parts of 1000 ppm-organic selenium and 0.1-5 parts of vitamin C. The preparation method for the feed additive comprises the following steps: stewing all traditional Chinese medicinal materials into an extracting tank with water, filtering, concentrating filtrate with alcohol, carrying out vacuum drying at a low temperature when the concentrated solution contains 20-30% of water so as to obtain powder, and mixing the traditional Chinese medicine powder with organic selenium and vitamin C according to the ratio, so as to obtain the feed additive. The feed additive disclosed by the invention has the double effects of resisting bacteria and viruses, can replace antibiotics for preventing and treating epidemic diseases of livestock and aquatic animals, improves the meat quality, decreases pork rancidity speed and remarkably increases the contents of arginine and selenium in pork.

The invention belongs to the technical field of iron and steel metallurgy and the field of gas-solid heat exchange or thermal reaction, and relates to a device for reducing iron-containing materials, in particular to a suspended reduction process for iron-containing materials and an iron-containing material reducing device for implementing the process of quick heating, quick reaction and separation of powdery iron-containing materials. In the injection reducing furnace, the gas phase and the solid phase flow upwards in parallel and the gas phase and the solid phase are in full contact, with large heat-transfer coefficient and large mass-transfer coefficient, so that the iron-containing materials are reduced and dried quickly, and the retention time of material granules in the system is greatly shortened. The suspended reduction process has the advantages of high thermal efficiency of the system, low heat loss, good system stability, compact equipment installation, small size, low investment, high production capacity, high product metallization rate, controllable metallization rate within the range from 85% to 97%, and uniform product quality.

The invention discloses an installation device for computer hardware based on a wedge type matching buffering principle. The device comprises a bottom plate, two side plates and a top plate, the two side plates are fixedly connected between the bottom plate and the top plate, an installation plate is arranged on the bottom plate, a computer mainframe case is fixedly connected with the installationplate through connecting bolts, the installation plate is connected with the bottom plate through a wedge buffering device, the wedge buffering device comprises a main wedge, the cross section of themain wedge is an isosceles trapezoid, and the lower end of the main wedge is arranged downwards. The device has the advantages that when the computer mainframe case moves downwards after subjected tovibration, a rack is driven to move downwards, a gear meshes with the rack rotates, a rotary shaft rotates, a connecting rope is driven to wind on the rotary shaft after the rotary shaft rotates, a buffering spring is pulled downwards, an upward impact force is generated by the buffering spring on the connecting rope to limit the rotation of the rotary shaft, and therefore the downward moving tendency of the computer mainframe case is limited.