32results about How to "Overcome the disadvantages of high cost" patented technology

The invention belongs to the field of electronic technology, and particularly relates to a conversion module of an electronic ballast-driven LED. The conversion module is connected between an electronic ballast and an LED array, and is characterized in that the conversion module includes a high-frequency current limiting circuit for regulating a high-frequency high-voltage AC (alternating current) at the output end of the electronic ballast, a rectifier filter circuit for rectifying and filtering the high-frequency high-voltage AC to a stable DC (direct current), an initial voltage stabilizing circuit for regulating an adaptive LED driving voltage, and a constant current drive circuit for regulating the LED to desired current control, wherein the high-frequency current-limiting circuit, the rectifier filter circuit, the initial voltage stabilizing circuit and the constant-current drive circuit are in fit-connection with each other. According to the invention, the conversion module overcomes the disadvantage of high cost of the existing LED drive power supply, and the LED can be driven only by connecting one necessary conversion controller for driving the LED with four output ports of the common electronic ballast. In addition, the conversion controller has adaptive regulation function, and can supply stable constable current to various kinds of LED load.

The invention discloses a direct-rotating type solar power generation device. The direct-rotating type solar power generation device comprises a structure of a base, a motor shaft, a photovoltaic cell panel, a shaft sleeve, a sealing sleeve and a motor. The direct-rotating type solar power generation device is characterized in that the motor is fixed into an inner cavity of the base, a rotating shaft of the motor penetrates through the base and the sealing sleeve to be fixedly connected with the shaft sleeve fixed to the photovoltaic cell panel, the sealing sleeve provided with a sealing ring is fixed to the face of the base through a bolt, and the rotating speed of the motor is one turn per 24 hours. Compared with a low-power power generation device in the prior art, the direct-rotating type solar power generation device overcomes the defect that due to the fact that a tracing device is adopted, cost is relatively large; even power generation of the low-power power generation device is achieved, the produced current is smooth and stable, the using effect and safety of an electric appliance are effectively guaranteed, and the direct-rotating type solar power generation device is economical and practical.

The invention discloses a method for preparing adipic acid polyester polyol by utilizing recycled alcohol. The method comprises the following steps: 1) putting recovered alcohol, adipic acid, a catalyst and the like into a polyester reaction kettle at a time; 2) when the temperature rises to 130 DEG C, introducing N2, continuing heating up to 142-145 DEG C, and carrying out a reaction for 1-2 h; 3) continuing heating up to 180-185 DEG C, and carrying out the reaction for 1-2 h; 4) heating up to 225-230 DEG C, and holding for 1-2 h; 5) vacuumizing, and when the product acid value is not more than 0.9 mg KOH / g, stopping the reaction; and 6) cooling to below 80 DEG C, carrying out filter-pressing material discharge, and thus obtaining the adipic acid polyester polyol. With adopting of the above scheme, the adipic acid polyester polyol is obtained; with utilization of the recycled low-molecular polyol, the method makes the best use of everything; and moreover, with adopting of the high-temperature high-pressure steam heating method, the method is more environmentally friendly and saves energy, has relatively low production cost, and allows the product to more have market competitive advantages.

The invention provides a residential building in which the room storey height resources are reserved in advance and enlarged in the odd even storey staggered architectural space mode, wherein the horizontal projections of the architectural spaces of two up-and-down adjacent houses arranged on the odd storey and the even storey respectively are mismatched; for houses on the odd storey and houses on the even storey, the architectural space of at least one bedroom is staggered up and down; in the same unit, the houses on the odd storey are in vertical align with the architectural spaces staggered on the odd storey and the even storey, and the houses on the even storey are in vertical align with the architectural spaces staggered on the odd storey and the even storey; the storey height of the architectural spaces staggered on the odd storey and the even storey is larger than the storey height of sitting rooms not staggered on the odd storey and the even storey, and smaller than twice height of sitting rooms not staggered on the odd storey and the even storey, and the staggered storey staggered plate structure is adopted; by the reservation of storey height and the addition of horizontal clapboards, the storey height resources of a room are enlarged; and walls around the architectural spaces on the odd storey and the even storey are main walls. In the invention, under the condition of not increasing floor spaces, the use space is enlarged, and resources are effectively saved.

The invention provides a manual polyurea, as well as a preparation method and use thereof. The manual polyurea comprises a component A and a component B at a weight ratio of (2:1)-(5:1), wherein the component A comprises the following components in parts by weight: 20-70 parts of aromatic isocyanate, 5-60 parts of steric hindrance ammoniate, 20-85 parts of polyether polyol and 1-5 parts of active diluent carbonic acid; the component B comprises the following components in parts by weight: 48-93 parts of steric hindrance ammoniate, 5-50 parts of filler, 2-4 parts of auxiliary and 1-3 parts of pigment. The invention further discloses a preparation method of the manual polyurea. The manual polyurea provided by the invention is scientific and reasonable in formulation, and the preparation method is simple and easy to realize; the gelation time is prolonged by the manual polyurea while the dynamic performance is guaranteed, so that the manual painting in narrow and complex environment can be realized.

The invention discloses a backlight indicator used by a controller and provided with a correction film. The backlight indicator comprises a backlight indicator basic body, a backlight color domain pad printing film and the light-transmitting correction film. A light-transmitting area is arranged on the end surface of the backlight indicator basic body, a correction film arranging area larger than the light-transmitting area is arranged on the inner side of the backlight indicator basic body corresponding to the light-transmitting area, the backlight color domain pad printing film is attached onto the light-transmitting area in printing mode, and the light-transmitting correction film is attached onto the correction film arranging area in sticking mode. A manufacture method of the backlight indicator used by the controller and provided with the correction film is further disclosed. According to the technical scheme, flaws of parts provided with backlight color domains and used in the controller brought by uneven color and poor impression degree due to various conditions happened on several parts in the manufacture process can be effectively overcome and compensated, part rejection rate is reduced or avoided, and product qualified rate is greatly improved. In addition, the manufacture method is simple in process, convenient to operate and low in cost.

The invention discloses a method for improving contents of EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid) in glyceride type fish oil. According to the method, the glyceride fish oil, which is high in EPA\DHA content, is synthesized by taking a freeze-dried strain as a catalyst and taking glyceride type fish oil and ethyl ester fish oil as substrates, and by conducting an ester interchange reaction under the action of aspergillus oryzae lipase, wherein the freeze-dried strain is prepared by freeze-drying a wet strain which is obtained from the fermented culture of aspergillus oryzae WZ007 after suspending the wet strain with a phosphate buffer which is 7.0 in pH value. The lipase adopted by the intermediate product preparation method disclosed by the invention is high in catalysis efficiency and the catalyst is recyclable; and the method is simple in downstream separation, low in energy consumption, low in production cost and light in environment pollution, and the method is applicable to industrial production.

The invention belongs to the technical field of conductive ink, and provides a water-based environmentally friendly graphene conductive ink in order to solve the problems of poor environmental performance and low conductive performance of the current conductive ink. 10~30 parts of water-based polymer resin, 10~20 parts of conductive filler, 50~120 parts of solvent, 0.5~3 parts of dispersant, 0.5~3 parts of defoamer, 1~5 parts of thickener The conductive ink is made of water-based polymer resin as a binder, and is processed by compound stirring and grinding with conductive fillers, solvents, co-solvents and related auxiliaries. It has the characteristics of adjustable resistivity, stable conductivity, good bending resistance, strong adhesion, and no harm to the environment and human body during use. It overcomes the disadvantages of oily solvents used in traditional conductive inks, such as poisonous and harmful environmental pollution, endangering the health of operators, and high cost of solvents. The ink is suitable for screen printing, flexographic printing, gravure printing, coating and other printing processes.

The invention discloses a source tracing mold and method for a bean curd. The source tracing mold comprises a mold frame, wherein a plurality of screen frames are arranged in the mold frame, and are used for partitioning the mold frame into small mold frames of the same size; the edge of the mold frame is provided with meshes; convex tracing codes are carved on one face of the mold frame which iscontacted with the bean curd, and are convexly carved in the center of every mold frame; and the projecting thicknesses of the tracing codes on the mold frame are 1-1.5 centimeters. When the source tracing mold is applied to bean curd production, tracing code information on the mold can be conveniently concavely carved on the surface of a bean curd in the bean curd molding process for tracing thesource of the bean curd, and the shape of the bean curd is well kept. The invention further provides a source tracing method for a bean curd. By adopting the source tracing method, the defect of highcost of the conventional bean curd anti-counterfeiting method is overcome, the phenomenon of goods falsifying existing in the bean curd production and sales processes can be eliminated effectively, the bean curd production and sales behaviors in China are standardized, and customers can buy favorite bean curds.

A pneumatic hydraulic generator set comprises a wind force transmission part, a mechanical transmission part, a hydraulic transmission part and a speed-adjusting and power-generating part. A wind wheel of the wind force transmission part rotates under the action of wind force and rotation force is sent to a main shaft through a wheel hub, the main shaft carries a circular motion, three groups of connecting rods of the mechanical transmission part mounted on the main shaft impose periodical pressure on a round tray and send torsional moment produced by the wind wheel to an output shaft on the bottom of a tower frame, the output shaft is connected with two steel wire ropes which are connected with two pressure oil pumps, the pressure oil pumps are driven to operate through swinging of the output shaft, stable pressure can enter into a pressure cabin of the hydraulic transmission part to drive a hydraulic motor to work, and through multiplex control of a continuously-variable unit of the speed-adjusting and power-generating part and using power which meets requirements to generate electricity of high quality. The pneumatic hydraulic generator set is low in the cost of manufacture, simple in structure, good in electricity-generating quality due to the fact that a hydraulic energy storage system is controlled multiply, convenient to mount, maintain and upsize, great in economic benefit, and capable of widely popularizing and applying.

The invention discloses an infrared detection device and a manufacturing method thereof and belongs to the field of semiconductor devices. The infrared detection device comprises a microbridge structure unit and a detection structure unit which is arranged on the microbridge structure unit; the detection structure unit comprises a first release protection layer and a second release protection layer which are sequentially arranged on the microbridge structure unit from the bottom up, and a transistor which is arranged between the first release protection layer and the second release protection layer; the transistor comprises electrode layers and semiconductor layers; a grid electrode, a source electrode, and a drain electrode in each electrode layer are positioned on the same layer; and the semiconductor layers comprise a grid semiconductor layer which corresponds to the grid electrodes in the electrode layers, a source electrode semiconductor layer which corresponds to the source electrodes in the electrode layers and a drain electrode semiconductor layer which corresponds to the drain electrodes in the electrode layers.

The embodiment of the present invention discloses a surface treatment method of a printed circuit board and the printed circuit board, wherein the surface treatment method of the printed circuit board includes: selecting an electroless nickel plating gold treatment method or The electroplating gold treatment method is to perform surface treatment on the connector of the printed circuit board; the surface treatment of the printed circuit board main body of the printed circuit board is carried out by using the electroless nickel plating gold treatment method and / or the first surface treatment method. The printed circuit board includes a printed circuit board main body and a connector. The surface treatment method of the connector is an electroless nickel-plated gold treatment method or an electroplating gold-plated treatment method selected according to the plugging frequency of the connector. The printed circuit board main body The surface treatment method is the chemical nickel-plating gold treatment method and / or the first surface treatment method. The embodiment of the present invention distinguishes the surface treatment methods of the connectors of the printed circuit boards with different insertion and extraction frequencies, thereby reducing the waste of resources.

A pneumatic hydraulic generator set comprises a wind force transmission part, a mechanical transmission part, a hydraulic transmission part and a speed-adjusting and power-generating part. A wind wheel of the wind force transmission part rotates under the action of wind force and rotation force is sent to a main shaft through a wheel hub, the main shaft carries a circular motion, three groups of connecting rods of the mechanical transmission part mounted on the main shaft impose periodical pressure on a round tray and send torsional moment produced by the wind wheel to an output shaft on the bottom of a tower frame, the output shaft is connected with two steel wire ropes which are connected with two pressure oil pumps, the pressure oil pumps are driven to operate through swinging of the output shaft, stable pressure can enter into a pressure cabin of the hydraulic transmission part to drive a hydraulic motor to work, and through multiplex control of a continuously-variable unit of the speed-adjusting and power-generating part and using power which meets requirements to generate electricity of high quality. The pneumatic hydraulic generator set is low in the cost of manufacture, simple in structure, good in electricity-generating quality due to the fact that a hydraulic energy storage system is controlled multiply, convenient to mount, maintain and upsize, great in economic benefit, and capable of widely popularizing and applying.

The invention discloses a TL-shaped assembling part for plates, and overcomes the defect of high cost brought about by application of CH-shaped keel to plate assembly in places where construction operations and the like are limited in the prior art. The assembling part comprises a fixing portion, a first bending portion, a second bending portion, a first clamping portion and a second clamping portion. The first bending portion and the fixing portion form a first included angle, the second bending portion and the first bending portion form a second included angle, a first surface of the first bending portion is opposite to a first surface of the fixing portion, and a second surface of the first bending portion is opposite to a second surface of the second bending portion. An angle between the first surfaces of the first clamping portion and the second bending portion is smaller than or equal to 90 degrees, and an angle between the second surfaces of the second clamping portion and the second bending portion is smaller than or equal to 90 degrees. The TL-shaped assembling part can be well suitable for the CH-shaped keel to have the plates of various fixed specifications assembled in limited places, and the problem of existing inconvenience in assembling the plates is solved.

The invention discloses a ceramic block cutting production line and a cutting processing method thereof. The existing ceramic block cutting device uses manpower to push the blocks for operation, which has low degree of automation, poor on-site environment, and high labor intensity for workers. The invention includes a rotating mechanism, a turning mechanism and three feed processing modules. The three feed processing modules are arranged at intervals in sequence. The rotating mechanism is arranged between the first feeding processing module and the second feeding processing module, and is used for rotating the ceramic block to be cut around a vertical axis. The turning mechanism is arranged between the second feeding processing module and the third feeding processing module, and is used for rotating the ceramic block to be cut around the horizontal axis. The rotating mechanism and turning mechanism designed in the present invention respectively realize the rotation of the blocks around the vertical axis and the horizontal axis, realize the automatic multi-dimensional cutting and processing of the blocks, and greatly improve the automation level and processing efficiency of the entire ceramic block production line , saving labor costs.

The utility model discloses a T-shaped assembling part for plates and overcomes the defect of high cost brought about by application of a C-H-shaped keel to assemble the plates in places where existing construction operations and the like are limited. The T-shaped assembling part comprises a fixing portion (1), a first clamping portion (2) and a second clamping portion (3), wherein an angle between first surfaces of the first clamping portion (2) and the fixing portion (1) is smaller than or equal to 90 degrees, and an angle between second surfaces of the second clamping portion (3) and the fixing portion (1) is smaller than or equal to 90 degrees. The T-shaped assembling set can well replace the C-H-shaped keel to have the plates of various fixed specifications assembled in limited places, and the problem of existing inconvenience in assembling the plates is solved.

A wind generating set with bottom driving comprises a wind power transmission portion, a mechanical driving portion, a speedup portion, a speed regulation generating portion, and a control portion. The power generated by rotation of blades under the effect of wind power is transmitted to a main shaft through a wheel hub. The main shaft is connected with two bevel gear sets for changing direction and speeding up twice, and an output shaft is a crankshaft which is formed by three connecting rod necks, the torsion moment generated by an impeller is transmitted to the crankshaft at the bottom of a tower cylinder through transmission steel pipes. The output shaft at the bottom of the tower cylinder connects a gear case to carry out speedup, six groups of speed regulation generating devices areintroduced, each group comprises two sets of speed regulation generating devices, each of which comprises a sprocket wheel, a clutch, a buncher stepless gear, and a generating set. The present invention has the advantages of low cost, stabilized generating frequency, direct access, convenience in market popularization, and requires no expensive frequency converter, and therefore, has significant economic benefit and wide application prospects.

The invention discloses an infrared detection device and a manufacturing method thereof and belongs to the field of semiconductor devices. The infrared detection device comprises a microbridge structure unit and a detection structure unit which is arranged on the microbridge structure unit; the detection structure unit comprises a first release protection layer and a second release protection layer which are sequentially arranged on the microbridge structure unit from the bottom up, and a transistor which is arranged between the first release protection layer and the second release protection layer; the transistor comprises electrode layers and semiconductor layers; a grid electrode, a source electrode, and a drain electrode in each electrode layer are positioned on the same layer; and the semiconductor layers comprise a grid semiconductor layer which corresponds to the grid electrodes in the electrode layers, a source electrode semiconductor layer which corresponds to the source electrodes in the electrode layers and a drain electrode semiconductor layer which corresponds to the drain electrodes in the electrode layers.