36results about How to "Overcome the disadvantages of low efficiency" patented technology

The invention discloses a special automatic vehicle coaxial combination brushes DC motor with functions of power self-regulating and temperature control. The motor has the following technical points: more than two stators with the same structure are mounted in a motor base, and more than two rotors with the same structure are correspondingly mounted on a rotary shaft; a wind cover is mounted outside the end cover of non-shaft stretch end, an air vent is formed in the middle of the wind cover, and is communicated with a blast pump; another air vent is formed at the end cover of the non-shaft stretch end, and a ventilation port is formed on the motor base; a temperature sensor is arranged in the motor base, and is connected to a temperature controller, and the temperature controller is connected with the blast pump and a power supply; the phase line of the stator winding of each stator and a control line are respectively connected to a corresponding sub-frequency conversion controller, each sub-frequency conversion controller is connected with a circuit controller, and the circuit controller is connected with the power supply. The motor disclosed by the invention can enlarge start torque, saves energy, lowers the cost of the frequency conversion controllers, and reduces the temperature rise of the motor.

The invention discloses a system for sorting fishes passing a fish way and relates to the field of fish way engineering. The system comprises a sorting chamber, a sorting tank, a releasing tank, a restoring pond and a discharge pipe, the sorting chamber is arranged above an observing chamber, the sorting tank is respectively connected with a lifting gate chamber and the restoring pond, a sorting tank inlet gate is arranged at a junction of the sorting tank and the lifting gate chamber, a sorting tank outlet gate is arranged at a junction of the sorting tank and the restoring pond, and a sorting platform is arranged on one side of the sorting tank; the releasing tank and the sorting tank are parallelly arranged side by side, one end of the releasing tank is communicated with the restoring pond, and two ends of the discharging pipe are respectively communicated with the restoring pond and a fish way body. The system overcomes the defects that the prior art is unsupportive of sorting or low in sorting efficiency, a fishing net is prone to causing damage to fishes in the process of fishing and analyzing, dehydration operation is prone to causing fish death, the fishes need to be moved out of the fish way after fish collection for sorting, identifying and measuring, and the lifting process is time-consuming and labor-consuming. The invention further discloses a method for sorting the fishes passing the fish way.

The invention provides a preparation method of activated lotus root fiber powder, pertaining to the field of biochemical food, which relates to a method used for extracting lotus root fiber by enzyme. After the lotus root starch is extracted, lotus root residue is taken as material, added with water, and heated to the temperature between 30 to 70 DEG C; Alpha-amylase and proteinase are respectively adopted to hydrolyze the starch and protein in the mixing liquid, then the mixing liquid is filtered, and the obtained condensate is dried by microwave, extruded, puffed, ultramicro crushed in sequence, and finally the activated lotus root fiber powder is prepared. The invention overcomes the shortcomings of the traditional chemical method, and has the advantages of single enzyme catalysis reaction, little byproduct, high product purity, moderate reaction conditions, environment friendliness, simple and easy controlled reaction process and easy separating products.

The invention provides a method, system, server and mobile terminal for sharing location information by multiple people. The method comprises the following steps: when a request instruction for creating a location sharing room transmitted by an administrator is received, creating the location sharing room on the server; when location information of each user transmitted by the mobile terminal in real time is received, drawing an electronic map in the location sharing room, wherein the electronic map is used for displaying the location information of each user; and downloading the electronic map by each user in real time through the mobile terminal. The method, system, server and mobile terminal for sharing the location information by multiple people provided by the invention enable multiple people to view the location information of everyone in real time when organizing tourism and other outdoor activities (even if the signal of the current location of a person is not good, but if the network of the location of previous time is good, the location nearby the person can be known), view the assembling speed, so as to facilitate the safety management, and people can be corrected in time when deviating from the safe locations.

The invention provides an adjustable pressure device used for polishing a heavy-calibre plane optical element, relating to a pressure device. The adjustable pressure device used for polishing the heavy-calibre plane optical element, provided by the invention, is used for regulating the pressure intensity born by a polishing surface of a workpiece when being processed, is capable of improving the polishing quality of the workpiece and controlling the removal rate of materials, and has simple and practical structure. The adjustable pressure device is provided with a mass block and a fixture flat plate, wherein the mass block is used as a pressure source; the fixture flat plate is provided with a fulcrum bar, a base and an adsorption base film, the fulcrum bar is used for loading the mass block, the lower part of the base is connected with the adsorption base film, a base body and a film are arranged on the adsorption base film, the base is adsorbed on the surface of the workpiece through the film of the adsorption base film to ensure that the whole device is fixed on the corresponding part of the workpiece.

The invention discloses a method for preparing konjak gluglucosan in mixed organic solvent with biological catalysis. It takes a mixed solvent system comprising main solvent of hydrophobic and adjuvant solvent of hydrophilic as reaction medium, taking aliphatic acid ethyenyl ester with carbon chain length being C2-C18 as acyl donor, and proceeding esterification reaction by using lipase and getting final product. The invention is characterized by soft reaction condition, low energy consumption, environment-friendly, simple process, selective and controllable reaction and easy-to-separate product.

The invention relates to a method for preparing andrographolide esterfied derivatives through biocatalysis, and belongs to the fields of biocatalysis and biosynthesis. The method takes acetone as solvent and aliphatic ester with C2-C18 carbon chain length as acyl donor, and utilizes lipase to catalyze andrographolide for acylation reaction at a reaction temperature of between 30 and 70 DEG C so as to synthesize the andrographolide esterfied derivatives. The method has the advantages of mild reaction conditions, environmental protection, high selectivity and controllability of the reaction, simple reaction process, easy separation of products from a reaction mixing system, and the like.

The invention belongs to the technical field of direct-current converters, particularly relates to a direct-current boost converter and a control method thereof, and aims to solve the problems of highloss and narrow working range of a traditional direct-current boost converter. The direct-current boost converter comprises an input power supply interface, a coupling inductor unit, a half-bridge unit, a bus support capacitor, a pre-charging diode, an isolation transformer, a rectifying and filtering circuit and a power supply output interface, wherein the input power supply interface can be used for inputting wide-voltage-range power supplies such as photovoltaic or fuel cells; the coupling inductor unit comprises an A-phase coupling inductor and a B-phase coupling inductor; the half-bridgeunit comprises a first bridge arm and a second bridge arm; and the rectifying and filtering circuit comprises diodes D1-D4 and a capacitor Co. The two primary side boost circuits are connected in parallel to complement and share power loss, the current ripple frequency is twice of the switching frequency of the main switching tube, a transformer with a simple structure can be adopted to provide ahigh step-up ratio, the switching stress of the converter can be reduced through resonant soft switching, and the performance of the converter is improved.

The present invention discloses a three-phase DC fan control circuit which comprises a control module, a drive module, a position sensing module and a three-phase motor with star connection. The center magnet of the three-phase motor is a six-groove type. The position sensing module comprises three position sensors which are adjacently distributed at the notch of the center magnet and are on the same arc, and the position sensor and the position sensors at two sides are spaced by 60 degrees. The three position sensors are used for detecting the position of the center magnet, generating a corresponding electrical level signal according to the position change of the center magnet and transmitting the electrical level signal to the control module. The control module is used for receiving the electrical level signal transmitted by the position sensors and generating a corresponding drive signal according to the electrical level signal to control the drive module to work. The drive module drives the three-phase motor to rotate to drive a three-phase DC fan to work. The efficiency of the above three-phase DC fan control circuit is high. The invention also discloses the three-phase DC fan which comprises the three-phase DC fan control circuit.

The invention discloses a musk deer breeding and mush deer farmyard manure combined production method. The deer breeding and mush deer farmyard manure combined production method is characterized by comprising the following steps: arranging a musk deer breeding and mush deer farmyard manure production adjacent joint facility mainly including a musk deer stable and a mush deer farmyard manure collecting and composting tank which are connected through an open trench or an underground tube, wherein the terrain of the mush deer farmyard manure collecting and composting tank is lower than that of a fattening musk deer stable; collecting mush deer manure for performing mush deer farmyard manure collecting and composting, performing normal mush deer breeding in the mush deer stable, collecting the mush deer manure for performing mush deer farmyard manure collecting and composting production; spraying water to soak corn stalks or sunflower straws or root remains or straw fragments, and mixing and storing the animal manure in proportion. The musk deer breeding and mush deer farmyard manure combined production method disclosed by the invention can be used for realizing musk deer breeding and mush deer farmyard manure combined production, so that the benefits are improved.

The invention relates to a joint production method for pig breeding and pig farm manure. The joint production method for pig breeding and pig farm manure is characterized by setting up adjacent joint facilities for pig breeding and pig farm manure, mainly including fattening pig sties and pig farm manure production pools; the flattening pigsties and the pig farm manure collection pools are connected by using open ditches or underground pipes; the pig farm manure production pools are lower than the flattening pig sties and used for collecting pig manure for pig farm manure production; a methane pool sealing shed is arranged on the pig farm manure production pools, and the methane pool sealing shed and the pig farm manure production pools are sealed by using mud or cement; conventional pig breeding is carried out in the flattening pig sties, and pig manure is collected and then used for production of pig farm manure. Corn stalks or sunflower stalks or roots or straws are cut into pieces and soaked by sprayed water, and then are proportionally mixed with animal manure. The joint production method for pig breeding and pig farm manure disclosed by the invention can jointly breed pigs and produce pig farm manure, and the benefit is increased.

The invention discloses a nine-speed double-clutch type automatic speed changer transmission structure and a vehicle. First-gear, second-gear, third-gear, fifth-gear, sixth-gear, ninth-gear, fourth-gear, seventh-gear and eighth-gear driving gears are arranged on an input shaft; first-gear, second-gear, fifth-gear, sixth-gear, seventh-gear and eighth-gear driven gears and a reverse-gear driving gear are arranged on a first output shaft; third-gear and ninth-gear driven gears are arranged on a second output shaft; a fourth-gear driven gear is arranged on a third output shaft; first-gear, second-gear, third-gear, fourth-gear, fifth-gear, sixth-gear, seventh-gear, eighth-gear and ninth-gear driven gears and the reverse-gear driving gear achieve corresponding shaft-gear transmission through a synchronizer; a reverse-gear driven gear is fixed to the third output shaft; first, third and fourth main reduction gears are respectively fixed to the first, second and third output shafts; a third clutch is connected with a second main reduction gear and the first output shaft; the first and third main reduction gears mesh with a first differential mechanism main reduction gear; the second and fourth main reduction gears mesh with a second differential mechanism main reduction gear; and the first and second differential mechanism main reduction gears are connected with a differential mechanism assembly through first and second clutches respectively. The axial size is short, the dynamic property and economical efficiency requirements are met, the gear shifting time is short, and the gear picking and shifting noise is avoided.