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43results about How to "There will be no burning phenomenon" patented technology

Self-operated three-way valve used for coolant circulating type machine room special machine

The invention provides a self-operated three-way valve used for a special machine in a refrigerant circulation parallel machine room. The three-way valve comprises a valve body, a low pressure air inlet pipe, a high pressure air inlet pipe and an exhaust pipe. The valve body is internally provided with a piston component, a valve seat and a sliding valve. The internal chamber of the valve body is divided into a low pressure chamber and a high pressure chamber by a piston which can axially move. A low pressure capillary is connected between the low pressure chamber and the low pressure air inlet pipe. A low pressure capillary is connected between the high pressure chamber and the high pressure air inlet pipe. The low pressure chamber and/or the high pressure chamber are/is internally provided with a spring. By the pressure difference of the suction and exhaust when a spring force and a compressor are stated, the piston component which is arranged in the valve body drives the sliding valve to be closely attached to the surface of the valve seat to slide, thus achieving the communication between the high pressure air inlet pipe and the exhaust pipe and the communication between the low pressure air inlet pipe and the exhaust pipe. The three-way valve needs no outside power, can achieve the free switching of refrigerant refrigeration circulation and the natural circulation just according to the running state of the compressor, thus sufficiently displaying the energy-saving advantage of the special machine in the refrigerant circulation parallel machine room and improving the operation reliability.
Owner:和雄科技(北京)有限公司

Safety control method for lubricating oil of multi-unit air conditioner of screw compressor

The invention discloses a safety control method for lubricating oil of a multi-unit air conditioner of a screw compressor. The method comprises the following steps of: (1) electrifying an air conditioning unit; (2) starting the screw compressor when oil temperature of an oil sump reaches a certain value; (3) opening an oil return electromagnetic valve to replenish the oil if the oil level in the oil sump of the screw compressor is lower than a safety oil level; (4) loading in a gradient way until full load is realized when the screw compressor is started; (5) opening the oil return electromagnetic valve to replenish the oil when the oil level of the oil sump during running is lower than the safety oil level, and opening a gas separation oil return electromagnetic valve to return the oil if the load of the screw compressor is less than 20-55 percent; and (6) unloading in a gradient way until the screw compressor is stopped when the screw compressor reaches stoppage conditions. Compared with the conventional method, the method has the characteristic of guaranteeing that the oil level of the lubricating oil in the oil sump of the screw compressor is positioned above the safety oil level in a starting process, an automatic adjustment process, a stoppage process and a protective adjustment process or the time for keeping the oil level below the safety oil level does not exceed 3 minutes.
Owner:NINGBO AUX ELECTRIC

Double-combined crown spring and jack using same

The invention relates to a double-combined crown spring and a jack using the same. The jack using the double-combined crown spring comprises a jack shell; the inner hole wall of the jack shell is provided with a fixed ring slot; the fixed ring slot is internally provided with the double-combined crown spring; the double-combined crown spring comprises two end holding rings which are respectively arranged at two ends and a middle holding ring which is arranged between the two end holding rings; and a group of crown spring wires for connecting the middle holding ring with the corresponding two end holding rings are respectively arranged between the middle holding ring and the two end holding rings. The double-combined crown spring provided by the invention is equivalent to two crown springs in function; the crown spring wires at the two ends are connected in series through a middle fixing ring, thus the phenomenon that the crown spring is burnt because of different contact resistances between the two crown spring wires and a contact pin and between the two crown spring wires and the jack is not generated; and in addition, the double-combined crown spring is a part, one fixed ring slot is just arranged on the inner hole wall of the jack shell when the double-combined crown spring is assembled in the jack shell, and the assembling of the double-combined crown spring is simple.
Owner:CHINA AVIATION OPTICAL-ELECTRICAL TECH CO LTD

SF6 breaker dynamic contact resistance detection device

The invention provides an SF6 breaker dynamic contact resistance detection device. The SF6 breaker dynamic contact resistance detection device comprises a super capacitance power source which is connected in parallel with two ends of a port of an SF6 breaker and is used for providing a stable similar current for the SF6 breaker, a current acquisition device which is connected in series with a connection line of the SF6 breaker and the super capacitance power source and is used for acquiring loop currents of the SF6 breaker in a closing and opening process, a voltage acquisition device which is connected in parallel at two ends of the port of the SF6 breaker and is used for acquiring loop voltages of the SF6 breaker in the closing and opening process, and a data processing system which is respectively connected with the current acquisition device and the voltage acquisition device and is used for receiving and displaying the currents and the voltages of the loop and calculating dynamic contact resistance of the SF6 breaker in the closing and opening process according to the currents and the voltages. The detection device is advantaged in that the structure is simple and safe, operation is convenient, and measurement precision is higher when dynamic contact resistance of the SF6 breaker is detected.
Owner:CHINA ELECTRIC POWER RES INST +2

Organic-inorganic base fertilizer for vegetable cultivation and preparation method of organic-inorganic base fertilizer

The invention discloses organic-inorganic base fertilizer for vegetable cultivation. The organic-inorganic base fertilizer for the vegetable cultivation comprises components as follows: 350-500 partsof sheep manure, 60-90 parts of chicken manure, 80-130 parts of straw, 50-70 parts of mushroom residues, 40-60 parts of polyglutamic acid, 12-18 parts of biological fungi, 6-10 parts of biomass charcoal, 8-12 parts of trace elements, 8-12 parts of selenium ore powder, 2-4 parts of silicon fertilizer, 15-30 parts of calcium magnesium phosphate fertilizer, 5-10 parts of potassium humate and 20-35 parts of amino acid fertilizer. According to the base fertilizer, animal waste and agricultural waste are taken as base fertilizer substrates, the biological fungi, the trace elements and inorganic fertilizer are added, so that on one hand, comprehensive nutrition is provided for basic growth of crops, on the other hand, soil hardening can be broken, soil structure is improved, organic matter and fertility of soil are increased, and photosynthesis of the crops is promoted; meanwhile, the animal waste and agricultural waste can be fermented by the biological fungi, therefore, the waste is recycled, and the environment is protected.
Owner:芜湖响民生态农业有限公司

Electroplating process of circuit board of burning-resistant board

The invention discloses an electroplating process of a circuit board of a burning-resisting board. The electroplating process comprises the following steps: firstly, providing a base plate and coating a copper foil layer at the periphery of the plate surface of the base plate; and then, carrying out boring, first-time plate grinding, copper electroplating, second-time plate grinding, outer circuit manufacturing, and electroplating, wherein the copper foil layer is of a latticed structure; the current density is 15-20ASF during the electroplating process, and the electroplating time is 90-100 minutes. The copper foil layer is arranged at the periphery of the plate surface of the base plate, so that the electroplating is uniform without a plate burning phenomenon; a low-current density long-time electroplating way is adopted to ensure the uniform and stable current of the plate surface, so that the plate is not burnt due to excessive current, the binding force and structural cohesive force of the based copper and electroplated copper of the plate are kept, and the quality of the circuit board is ensured. Moreover, the latticed structure is arranged at the periphery of the plate surface for saving the copper, so that the electroplating area is reduced during the electroplating process, and the copper is further saved.
Owner:SHENZHEN XINGDA PCB

Meat and bone meal organic fertilizer and preparation technology thereof

The invention provides a meat and bone meal organic fertilizer and a preparation technology thereof. The preparation technology comprises the following steps: adding agricultural leftovers such as rapeseed cakes, sesame seed cakes, soybean meal and tobacco residues, adjusting the carbon-nitrogen ratio of meat and bone meal, adding caustic calcined magnesite to adjust the pH value of the obtained material, inoculating with a compound fermentation strain and a compound biological enzyme, carrying out sufficient decomposition fermentation in a fermentation tank, and naturally airing, sieving, extrude-granulating, drying and cooling the decomposed mixture to obtain the commercial high-efficiency meat and bone meal organic fertilizer. The organic fertilizer is safe, efficient, green and environmentally friendly, contains 80% or more of organic matters, 8% or more of total nutrients (nitrogen + phosphorus pentoxide + potassium oxide), and 12% or less of water, belongs to a high-end organic fertilizer product, overcomes the defects and deficiencies in the current applications of the meat and bone meal, has a good reference effect on promoting the recycling of agriculture and animal husbandry industries, and also has good economic and social benefits. Field experiments prove that the organic fertilizer has a good application effect.
Owner:WEIFANG YUNTAO ORGANIC FERTILIZER

Special biological organic fertilizer for yellow peach as well as preparation method and application thereof

The invention provides special biological organic fertilizer for yellow peach as well as a preparation method and application thereof, and relates to the field of biological organic fertilizer. The biological organic fertilizer comprises a fermented substance obtained by mixing and fermenting the following materials in parts by weight: 114 to 138 parts of composted organic fertilizer, 4.5 to 16.5parts of an oilseed meal mixture, 0.75 to 1.8 parts of azadirachtin, 0.75 to 1.8 parts of rare-earth element and 0.75 to 1.5 parts of composite functional fungicide, and 4.5 to 15 parts of banana waste charcoal. The composted organic fertilizer is prepared by mixing and fermenting rice bran, tobacco leftovers, an oilseed meal mixture, mushroom residues, distillers' grains, animal bone meal and a fermentation bactericide according to a ratio. The biological organic fertilizer is high in content of organic matters, potassium and macroelements, chelates a given amount of medium-trace elements, and is balanced in nutrition, the risk of livestock manure for planting the yellow peach can be reduced, after the special biological organic fertilizer is used for a long term, a soil structure can beimproved, the soil hardening can be eliminated, the pesticide use can be reduced, and the environmental pollution can be alleviated.
Owner:湖南慧谷农业生态研究院有限公司

Method for cultivating machine-transplanted bowl body strong tiller seedling in easy water leakage soil

The invention provides a method for cultivating machine-transplanted bowl body strong tiller seedling in easy water leakage soil, belonging to the technical field of crop cultivation. The cultivatingmethod comprises the following steps: (1) accelerating germination of seeds until the seeds are broken and white buds appear, and drying to obtain germinated seeds; (2) sowing that germinated seeds into the nutrient soil in the seedling tray, darkening for 2 to 3 days to obtain a seedling emergence tray; (3) placing that seedling emergence tray on the seedling bed, covering the bed with a non-woven cloth, pouring PAOMA water, removing the membrane when the leaf age of the seedling reach one leaf and one core stage, and performing the promoting and controlling of the seedling. As that promotingand controlling operation is carried out during the seedling stage, the fertilizer can be prevented from leaking with water, the chemical control agent effective ingredient can be prevented from being diluted and the concentration can be prevented from being reduced, so that the chemical control effect is prevented from being weakened, thereby playing a romoting and controlling role of topdressing fertilizer and chemical control. Compared with the conventional seedling raising method, the invention has the advantages of uniform seedling emergence, more roots, strong seedling, 0.6-0.8 increasetiller/hole and about 5% rice yield increase in the later stage.
Owner:HUAIAN AGRI TECH EXTENSION CENT

Device and method for improving urea formaldehyde compound fertilizer on amino acid compound fertilizer production line

The invention discloses a device and method for improving urea formaldehyde compound fertilizer on an amino acid compound fertilizer production line. The device comprises a urea formaldehyde reaction tank, a formaldehyde storage tank, a urea formaldehyde storage tank, an ammonium chloride tank, an alkali tank, a urea formaldehyde delivery pump, an electromagnetic flowmeter, a granulation sprayer and a rotor drum granulator, wherein the urea formaldehyde reaction tank comprises a reaction tank with a speed reducer and an electric agitator, a steam pipe and a jacket; the urea formaldehyde storage tank and the ammonium chloride tank are connected with a feed port of the urea formaldehyde reaction tank, and a discharge port of the urea formaldehyde storage tank is connected with the rotor drum granulator through the urea formaldehyde delivery pump, the electromagnetic flowmeter and the granulation sprayer. Prepared urea formaldehyde suspension is sent to a storage tank through an agitator pump and then pumped to a roller granulator for compound fertilizer granulation, the urea formaldehyde suspension is not required to be dried, a large amount of energy is saved, and the device and the method are adapted to production of the urea formaldehyde compound fertilizer by appropriate modification of the amino acid compound fertilizer production line.
Owner:HEILONGJIANG ZHONGNONG XINXIN AGRI TECH DEV CO LTD +1

Automatic cooling liquid adding device of wire electric discharge machining tool

The invention discloses an automatic cooling liquid adding device of a wire electric discharge machining tool. The automatic cooling liquid adding device comprises a liquid storage tank, a first photoelectric sensor, a second photoelectric sensor, a water pump, an electromagnetic valve and a control panel, wherein the left side of the bottom end of the liquid storage tank communicates with the topend of a liquid outlet pipe, a liquid spraying pipe is arranged below the liquid outlet pipe, the outer side of the liquid outlet pipe is sleeved with a connecting sleeve, a moving block is mounted on the inner wall of the left side of the liquid storage tank, the water pump is mounted at the top of the liquid storage tank, a liquid supplementing pipe is arranged on the right side of the connecting pipe, the electromagnetic valve is mounted in the middle of the liquid supplementing pipe, the other end of a flexible pipe communicates with the top end of a liquid return head, and the control panel is mounted on the left side of the liquid storage tank. The position and direction of a sprayer can be randomly adjusted, cooling liquid is fully automatically added without user operation, the phenomenon that a workpiece is burnt due to lack of cooling liquid in the liquid storage tank is avoided, and practicability is high.
Owner:保时杰数控机床江苏有限公司

Charging circuit and charger capable of automatically identifying battery polarities

The invention discloses a charging circuit capable of automatically identifying battery polarities. The charging circuit comprises a power supply converting module and a polarity identifying module, wherein the power supply converting module is used for converting an alternating current power supply into a direct current power supply; the polarity identifying module comprises a first positive-negative-positive (PNP) triode Q5, a second PNP triode Q7, a first negative-positive-negative (NPN) triode Q6, a second NPN triode Q8, a first resistor R14, a second resistor R13, a third resistor R15 and a fourth resistor R12; when a first charging terminal is connected with a battery positive pole, the second PNP triode Q7 and the first NPN triode Q6 are connected, and a battery is charged through the second PNP triode Q7 and the first NPN triode Q6; and when the first charging terminal is connected with a battery negative pole, the first PNP triode Q5 and the second NPN triode Q8 are connected, and the battery is charged through the first PNP triode Q5 and the second NPN triode Q8. By means of the charging circuit, nonpolarity charging of the battery is achieved. The invention further discloses a charger capable of automatically identifying the battery polarities.
Owner:OCEANS KING LIGHTING SCI&TECH CO LTD +1

Self-operated three-way valve used for coolant circulating type machine room special machine

The invention provides a self-operated three-way valve used for a special machine in a refrigerant circulation parallel machine room. The three-way valve comprises a valve body, a low pressure air inlet pipe, a high pressure air inlet pipe and an exhaust pipe. The valve body is internally provided with a piston component, a valve seat and a sliding valve. The internal chamber of the valve body isdivided into a low pressure chamber and a high pressure chamber by a piston which can axially move. A low pressure capillary is connected between the low pressure chamber and the low pressure air inlet pipe. A low pressure capillary is connected between the high pressure chamber and the high pressure air inlet pipe. The low pressure chamber and / or the high pressure chamber are / is internally provided with a spring. By the pressure difference of the suction and exhaust when a spring force and a compressor are stated, the piston component which is arranged in the valve body drives the sliding valve to be closely attached to the surface of the valve seat to slide, thus achieving the communication between the high pressure air inlet pipe and the exhaust pipe and the communication between the low pressure air inlet pipe and the exhaust pipe. The three-way valve needs no outside power, can achieve the free switching of refrigerant refrigeration circulation and the natural circulation just according to the running state of the compressor, thus sufficiently displaying the energy-saving advantage of the special machine in the refrigerant circulation parallel machine room and improving the operation reliability.
Owner:和雄科技(北京)有限公司

Seedling combined planting method for bougainvillea speetabilis and evergreen leaf tree

The invention discloses a seedling combined planting method for bougainvillea speetabilis and evergreen leaf trees. The method comprises the following steps: planting a single bougainvillea speetabilis seedling and a single evergreen leaf tree seedling in a same potting bag, culturing at temperature of 20-25 DEG C; in a culture process, uniformly winding and fixing bougainvillea speetabilis branches on leaves of an evergreen leaf tree, when a plant grows to 0.5 m, spraying auxin once a week, when the plant grows to 1.2 m, stopping to use the auxin, illuminating the plant by ultraviolet for 5-8 hours every day, until the evergreen leaf tree seedling grows to 1.5 m, transplanting the seedling. Culture mediums in two different formulas are used in a soil matrix, being beneficial for rooting and growing of the seedling. In the method, the auxin is sprayed in the earlier stage, branches and stems grow rapidly, branches and stems are long and are easy to bind and fix. In a later stage, ultraviolet is used to irradiate the bougainvillea speetabilis and the evergreen leaf tree, growth of the bougainvillea speetabilis and evergreen leaf tree are restrained, so branches and stems age and tenacity is high, so the bougainvillea speetabilis and the evergreen leaf tree are firmly fixed, seedlings do not easily slump, and the method is beneficial for transplanting of seedlings.
Owner:GUANGXI MODERN GARDEN GREENING ENGINEERING SEEDLING CO LTD

Drying air duct assembly and clothes processing equipment comprising same

The invention relates to the technical field of clothes treatment equipment, in particular to a drying air duct assembly and clothes treatment equipment comprising the drying air duct assembly. In order to solve the problems that a heating device in an existing drying air duct is low in safety, slow in temperature rise and low in heat conductivity, the drying air duct assembly comprises an air duct outer shell, a draught fan, an insulating shell and a superconductive heating piece, and a first air inlet and a first air outlet are formed in the air duct outer shell; the fan and the superconductive heating piece are arranged in the air duct outer shell and located between the first air inlet and the first air outlet, the insulating shell covers the superconductive heating piece, and a second air inlet and a second air outlet are formed in the two ends of the insulating shell in the air direction respectively. The superconductive heating element has the advantages of small thermal resistance, high heat exchange efficiency and power saving, has the characteristics of rapid heat dissipation and instant cooling after power failure, can automatically keep constant temperature, improves the safety of the drying air duct, and can effectively prevent electric shock and improves the safety performance as the insulating shell separates the superconductive heating element from the air duct outer shell.
Owner:QINGDAO HAIER WASHING MASCH CO LTD +1

Safety control method for lubricating oil of multi-unit air conditioner of screw compressor

The invention discloses a safety control method for lubricating oil of a multi-unit air conditioner of a screw compressor. The method comprises the following steps of: (1) electrifying an air conditioning unit; (2) starting the screw compressor when oil temperature of an oil sump reaches a certain value; (3) opening an oil return electromagnetic valve to replenish the oil if the oil level in the oil sump of the screw compressor is lower than a safety oil level; (4) loading in a gradient way until full load is realized when the screw compressor is started; (5) opening the oil return electromagnetic valve to replenish the oil when the oil level of the oil sump during running is lower than the safety oil level, and opening a gas separation oil return electromagnetic valve to return the oil if the load of the screw compressor is less than 20-55 percent; and (6) unloading in a gradient way until the screw compressor is stopped when the screw compressor reaches stoppage conditions. Compared with the conventional method, the method has the characteristic of guaranteeing that the oil level of the lubricating oil in the oil sump of the screw compressor is positioned above the safety oil level in a starting process, an automatic adjustment process, a stoppage process and a protective adjustment process or the time for keeping the oil level below the safety oil level does not exceed 3 minutes.
Owner:NINGBO AUX ELECTRIC
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