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94results about How to "Achieve resistance" patented technology

District air-conditioner distributed secondary pump system

The invention aims to provide a district air-conditioner distributed secondary pump system, which comprises refrigeration main engines 1, chilled water primary pumps 2, a water segregator 3, a water collector 4, and a profit and loss tube 5. According to the invention, in the two forms of an indirect connection 1 and an indirect connection 2, a chilled water secondary pumps 6, plate heat exchangers 7, user chilled water circulating pumps 8, and user tail end air processing devices 9 are mainly arranged on a user side; in the direct connection form, the chilled water secondary pumps 6, the user tail end air processing devices 9, and a bypass pipe 10 of a secondary pump suction inlet with a control valve are mainly arranged in the user side. The invention also provides a connecting form of distributively arranging the secondary pumps to a chilled water distribution system of each user building, and a corresponding operation control method. The system can well realize the hydraulic equilibrium of each paralleled loop circuit of a district cooling system transmission and distribution network, improves the operation efficiency of the secondary pumps, and greatly reduces the water pump energy consumption, thereby improving the energy efficiency ratio of the overall system, and increasing the safety of the overall district cooling system.
Owner:南京市建筑设计研究院有限责任公司

Bodybuilding bicycle system based on virtual reality technology

The invention discloses a bodybuilding bicycle system based on a virtual reality technology. The bodybuilding bicycle system comprises a single chip microcomputer, a heart rate sensor, a sensor for measuring the blood pressure of an exerciser, a pressure sensor for measuring the weight of the exerciser, bluetooth communication, a human health data APP in a mobile phone, virtual reality glasses, amotor driving circuit, a stepping motor and a fan. The single chip microcomputer receives the information of the heart rate sensor, the sensor for measuring the blood pressure of the exerciser, and the pressure sensor for measuring the weight of the exerciser, and transmits the information to the human health data APP in the mobile phone through the bluetooth communication, meanwhile, the single chip microcomputer receives the gradient and speed information in the virtual reality glasses, the stepping motor and the fan are controlled to make corresponding response through the motor driving circuit, and the resistance sense and speed sense are achieved. According to the bodybuilding bicycle system provided by the invention, the synchronization of human body vision and human body perceptionis realized, the interaction with a virtual reality scene is increased, and the experience feeling of the exerciser is enhanced.
Owner:CHINA JILIANG UNIV

Permanent magnetic brushless constant voltage generator and voltage stabilizing method thereof

InactiveCN101783643AIncrease leakage inductance reactanceThe leakage inductance reactance is reducedSynchronous machinesGenerator control of frequency and voltageFrequency conversionPower grid
The invention relates to a permanent magnetic brushless constant voltage generator and a voltage stabilizing method thereof. The generator is driven by a speed change wind wheel, the sent constant voltage direct current is output to the electric network after the frequency conversion through an inverter, the leakage reactance per-unit value X<*> of an armature winding at the maximum work rotating speed of the generator equals to the ratio of the difference of the maximum work rotating speed and the minimum work rotating speed of the generator to the minimum work rotating speed, and the range of the leakage reactance per-unit value X<*> is from 1 to 1.8. The method increases the leakage inductance value of the armature winding of the generator through the optimized electromagnetic design on the generator per se, so the leakage inductance resistance of the armature winding of the generator in work is increased, the potential E of the generator is in isometric and synchronous change with the leakage resistance voltage reduction X.I of the armature winding when the rotating speed of the generator is changed in the work rotating speed range, and thus, the constant voltage output is realized. The generator can realize the voltage stabilization without increasing any detection and control links, executing mechanisms and the like, the structure is greatly simplified, the cost is greatly reduced, and the invention has the advantages of simplicity, economy, effectiveness and reliability.
Owner:包头长安永磁电机有限公司

Efficient fertilizer with additional modified osmanthus fragrans essential oil and double-release effects for Chinese cabbage and method for preparing efficient fertilizer

The invention discloses an efficient fertilizer with additional modified osmanthus fragrans essential oil and double-release effects for Chinese cabbage. The efficient fertilizer comprises, by weight, sodium alginate, nanometer kaolin, water-soluble polyethylene glycol, dietary fibers, cholesterol, threonine, potassium oxalate, disodium octoborate tetrahydrate, polyglutamic acid, yellow brown potassium humate, alkyl polyglucoside, lutein, humic acid, mycoprotein, aggregative active enzymes, photosynthetic bacteria, edible fungi residues, concha ostreae shell powder, sawdust, broken egg shells, modified tree ash, cortex cinnamomi oil, enzymes, copper-based nutrition protective agents, the osmanthus fragrans essential oil, an appropriate quantity of liquid anion water and an appropriate quantity of water. The efficient fertilizer has the advantages that the small-molecule osmanthus fragrans essential oil, the cortex cinnamomi oil and the lutein can assist in cultivating the Chinese cabbage with taste of osmanthus fragrans and are matched with nutrition liquid and main materials prepared from compost for preparing the efficient fertilizer, and accordingly the efficient fertilizer is nutritious and is high in efficiency.
Owner:WUHU RUNLAN BIOTECH CO LTD

Mold formed through buckle core-pulling mechanism

The invention discloses a mold formed through a buckle core-pulling mechanism, and belongs to the field of thermoplastic plastic forming molds. According to the mold, a tapered wedge 6, a spring A8 and a shouldered tap bolt A7 are matched for use, so that a sliding block insert A11 makes pulling-first rectilinear motion, packaging force and resistance are reduced for disengaging a horizontal buckle part of a plastic product, and the smooth demolding is realized. A spring D21, a shouldered tap bolt B20, a movable mold insert A27, a movable mold insert B28 and a movable mold insert C29 are matched for use, packaging force and resistance are reduced for disengaging a vertical buckle part of the plastic product, and the smooth demolding is realized. Under the action of an oblique guide pillar 13 and a spring C16, demolding of a sliding block insert C25 and a sliding block insert D26 and ejection of a sliding block insert B15 can be performed at the same time, stress evenness of the product buckle part during demolding is guaranteed, scratching of the buckle part is prevented, and the reject ratio in batch production is reduced; smooth demolding of the product is achieved, and the technical requirement and using requirement are met; and mold space is effectively utilized, the structure is simple and compact, and production efficiency is improved.
Owner:DALIAN LUANYI PRECISION ENG

Pediatric drug grinding machine

The invention discloses a pediatric drug grinding machine. The pediatric drug grinding machine comprises a machine base and a machine body, wherein the machine base is internally provided with a rotating motor; the bottom of the machine body is provided with a round connecting seat; the connecting seat is in up-down matched connection with the top of the machine base; the machine body is providedwith a grinding shaft; the upper end of the grinding shaft extends into the machine body and is connected with a grinding cutter; the lower end of the grinding shaft extends out of the machine body and then is in up-down matched connection with a rotating shaft of the rotating motor; the top of the machine base is provided with a fixed seat and a fixed seat through hole; the rotating shaft is externally sleeved with a conical sleeve; the conical sleeve is positioned in the through hole; the left and right sides of the fixed seat are provided with sliding grooves; the sliding grooves are internally provided with sliding rods; the lower part of the conical sleeve extends down to form a straight barrel; the machine base is internally provided with a linear motor and a transmission part; and the transmission part is used for transmission connection between the straight barrel and the linear motor. The linear motor drives the straight barrel to move up and down, and the conical sleeve can move up and down under the driving of the straight barrel and promotes the sliding rods to move to or away from the connecting seat to abut against or leave the connecting seat, so that the machine body does not easily shake and fall to cause danger in high-speed grinding of the grinding machine, and the use safety is high.
Owner:信贵卫

Novel space marine evacuation channel and evacuation method thereof

The invention provides a novel space marine evacuation channel and an evacuation method thereof. The evacuation channel comprises a plurality of round supporting steel rings, supporting steel ropes, adamping cloth sliding way and an air expansion type life raft, wherein the plurality of supporting steel ropes are uniformly arranged along the circumferential direction of the plurality of round supporting steel rings which are arranged from top to bottom and penetrate through all the round supporting steel rings from top to bottom; a first class unit is enclosed by the first round supporting steel ring and the second round supporting steel ring at an inlet end; a third class unit is enclosed by the first round supporting steel ring and the a second round supporting steel ring at an outlet end; a plurality of second class units are enclosed by the second round supporting steel ring at the inlet end, the first round supporting steel ring at the outlet end and all the round supporting steel rings. The novel space marine evacuation channel provided by the invention adopts a net braiding structure and wind resistance is reduced; evacuation people can conveniently descend and the fallingspeed can be automatically controlled; a space position of the whole channel in the round supporting steel rings is adjusted by adopting an adjusting rope, so that the falling route and position are adjusted and the gliding speed is slowed down.
Owner:山东哈船海洋装备制造有限公司

Rapid cigarette rapid packaging device with automatic filling function

The invention discloses a rapid cigarette rapid packaging device with an automatic filling function, and belongs to the field of cigarette processing. The rapid cigarette rapid packaging device with automatic filling function comprises a cigarette making machine body and a cut tobacco pressing box fixedly installed at the front end of the cigarette making machine body, and a cigarette driving assembly is installed in the cigarette making machine body; the lower end of the cut tobacco pressing box is connected with a cut tobacco kneading and filling assembly, the cut tobacco can spirally descend in the cut tobacco kneading and filling pipe under the action of a cut tobacco kneading spiral groove and a cut tobacco kneading inflation ball through mutual cooperation of the cut tobacco kneading and filling assembly, the cigarette driving assemblyand thesmeicircular guard plate, the cut tobacco are kneaded into a roll, gaps between the tobacco shreds are reduced, The uniformity of tobacco shreds filled into the cigarette drums is effectively improved, the cigarette quality is effectively improved, the error of market evaluation is reduced, the cigarette drums are driven to rotate through the cigarette driving assembly at the same time, filling can be conducted on the cigarette drums at the same time, and the filling efficiency is improved.
Owner:湖南叁谐科技发展有限公司

Wind-resistant photovoltaic panel mounting bracket

The invention relates to a wind-resistant photovoltaic panel mounting bracket. The bracket comprises a bracket body and a load-bearing base; the load-bearing base comprises wind-resistant plates and wind-resistant columns; each wind-resistant plate forms an accommodating cavity on the load-bearing base; telescopic push rods connected with the bracket body are arranged in the wind-resistant columnsrespectively; the bracket body is arranged obliquely outside the accommodating cavities through the extension length of the telescopic push rods; and the bracket body is accommodated in the accommodating cavities through the contraction of the telescopic push rods. According to the wind-resistant photovoltaic panel mounting bracket of the invention, the bracket body is arranged obliquely outsidethe accommodating cavities through the extension length of the telescopic push rods, so that the bracket body can be exposed to sunlight to generate direct current for a user to use; when it is windy,the bracket body can be accommodated in the accommodating cavities through the contraction of the telescopic push rods; the bracket body can be protected through the wind-resistant plates and wind-resistant columns on the load-bearing base, and therefore, wind can be resisted, damage to the bracket body and a photovoltaic panel can be decreased, and cost can be saved.
Owner:ZHEJIANG HUIHONG SOLAR ENERGY CO LTD

Traditional Chinese medicinal preparation for health care and quality improvement of tobacco, and use method thereof

The invention relates to a traditional Chinese medicinal preparation for health care and quality improvement of tobacco, and a use method thereof, and belongs to the technical field of tobacco cultivation. Natural propolis, artificially cultivated and produced Ganoderma lucidum powder, natural cinnamon bark powder and Chinese magnoliavine powder are mixed according to a mass ratio of (1-10):(20-50):(25-45):(15-35), the obtained mixture is immersed in clean water for 4-6 h, the mixture and the water are boiled, then are decocted above medium fire for 30-60 min, and then are cooled to room temperature, and the obtained cooled solution is filtered by a two-layer common gauze to obtain a filtrate for later use; and each 10-25 g / 666.7 m<2> of a penetrant calcium dodecylbenzene sulfonate is added to 300-1000 g / 666.7 m<2> of the filtrate, the filtrate and the penetrant are blended with clean water until the concentration of the filtrate is 1-3%, and the finally obtained solution is applied once every 10-20 days for multiple times to the leaf surfaces of tobacco leaves which are transplanted 30 days earlier. The traditional Chinese medicinal preparation can promote the vigorous growth of tobacco plants, enhance the resistance of the tobacco plants to adverse environment and improve the ripening resistance and the baking resistance of the tobacco leaves, so the aroma substance content,the level proportion, the yield and the quality of the tobacco leaves are improved.
Owner:HUNAN AGRICULTURAL UNIV

Backflow preventer with low water loss

PendingCN113280162AChange resistance characteristicsAchieve reliabilityCheck valvesWater escapeWater pipe
The invention provides a backflow preventer with low water loss, and belongs to the technical field of valves. The backflow preventer comprises a valve body, a water inlet check valve, a water outlet check valve, a water inlet, a water outlet, a water inlet cavity, a middle cavity, a water outlet cavity, a water escape valve, an elastic part and a water escape valve, wherein the water inlet and the water outlet are arranged at two ends of the valve body, a diaphragm cavity is arranged in the middle cavity and communicates with the water inlet cavity through a water pipe, the lower end of the water escape valve is arranged in the middle cavity, the upper end of the water escape valve is arranged in the diaphragm cavity, the water inlet check valve comprises a valve plate, the side, close to the middle cavity, of the valve plate is perpendicularly and fixedly connected to the inner wall of a valve deck through the elastic part, a magnetic assembly is arranged on the side, close to the water inlet, of the valve plate, and the opening and closing of the water inlet check valve is controlled through joint control of the elastic part and the magnetic assembly by the valve plate. The backflow preventer is simple in structure and easy to install and maintain, a check mechanism formed by combining magnetic force and spring force is adopted, the resistance characteristic of the check valve is changed, and the pursuit of closing reliability and low resistance of the check valve is effectively achieved.
Owner:BENSV VALVE CO LTD
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