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967results about How to "Easy to process and produce" patented technology

Method and device for automatic detection of composite errors of ball screw spiral raceway

The invention discloses a method for automatic detection of composite errors of a ball screw spiral raceway, which comprises the following steps of: firstly, carrying out sampling preparation; then, sampling the axial position and the radial position of each point on a normal section curve of the screw spiral raceway to be detected by using a grating ruler and an optical screen type displacement sensor; then, processing the sampling data, and acquiring the normal section error and the pitch diameter dimension error of the screw spiral raceway to be detected in the rotating angle position; and after rotating the screw to be detected by 360 degrees/n, repeating the processes for n-1 times to acquire normal section errors and pitch diameter dimension errors of the ball screw spiral raceway to be detected under different rotating angle degrees, and taking the maximum values of the normal section error and the pitch diameter dimension error on each circle of raceway under each rotating angle degree as an actual normal section error and an actual pitch diameter dimension error of a screw to be detected. The invention also discloses a device for automatic detection. The method and the device for automatic detection can be used for achieving the purpose of automatic detection of the composite errors of the ball screw spiral raceway, and have good effect and high precision.
Owner:NANJING UNIV OF SCI & TECH

Integrated temperature thin film pressure sensor

The invention relates to an integrated temperature thin film pressure sensor, which consists of a suction pressure connecting pipe with threads and a seal ring, a sensitive component, an external circuit board, a shell and a socket connector. A sensitive elastomer is provided with a transition layer, an insulating layer, resistive layers (including a strain resistive layer and a temperature sensitive resistive layer), a welding layer and a passivation protective layer, wherein the resistive layers are connected with the external circuit board through conducting wires. The insulating layer of the sensor is formed by superimposing SiO2 and Ta2O5 or superimposing the SiO2 and Al2O3, the strain resistive layer is formed by photoetching a NiCr alloy layer, the temperature sensitive layer is formed by photoetching Ni metal, and the temperature sensitive layer not only can solve the problem of actual temperature measurement, but also can compensate the temperature sensitivity more precisely so that the pressure measurement is more accurate. The integrated temperature thin film pressure sensor adopts an ion beam sputtering process, thus the long-term stability of the sensor is good, the temperature zero drift is minimum and the comprehensive precision is high.
Owner:SHAANXI ELECTRICAL APPLIANCE RES INST

Multi-connected air-conditioning unit control method

The invention discloses a multi-connected air-conditioning unit control method. A multi-connected air-conditioning unit comprises an air-conditioner main unit consisting of more than two outdoor units in parallel connection and an indoor unit, and the outdoor units include a main unit outdoor unit and an auxiliary unit outdoor unit which is used for precisely controlling power output of the outdoor units according to practical power requirements of the indoor unit. Alternation of the outdoor units and variable-frequency compressors of the outdoor units is complete by steps: firstly, judging whether system load Q is smaller than a set capacity Q2; secondly, judging whether the system load Q is larger than a set capacity Q1; and thirdly, judging whether the system load Q is larger than the set capacity Q2 and smaller than the set capacity Q1. By means of alternative control of full-variable-frequency compressors and automatic alternative control of the outdoor units, the outdoor units and the variable-frequency compressors of the outdoor units can be alternatively used while power output of the outdoor units is precisely controlled according to the practical power requirements of the indoor unit within a certain range of the system load, and thereby service lives of the multi-connected air-conditioning unit and the outdoor units are prolonged without adding any extra equipment.
Owner:GD MIDEA HEATING & VENTILATING EQUIP CO LTD

Water-retaining and slowly-release compound fertilizer and preparation method thereof

The invention discloses a water-retaining and slowly-release compound fertilizer and a preparation method thereof. The water-retaining and slowly-release compound fertilizer is prepared from the following components in parts by weight: 60-75 parts of chemical fertilizers, 1-6 parts of a water-retaining agent and 19-39 parts of filler, wherein the chemical fertilizers are at least two of a nitrogen source fertilizer, a phosphorus source fertilizer and a potassium source fertilizer; the water-retaining agent is at least one of polyacrylamide, sodium polyacrylate and sodium carboxymethylcellulose; the filler is at least one of bentonite, attapulgite, kaolin, talcum powder and gypsum powder. The preparation method comprises the following steps: 1) mixing the chemical fertilizers, the water-retaining agent and the filler to obtain a mixture; 2) adding water in the mixture and granulating; stopping adding water when small particles are formed, then adding the filler powder, granulating, and finally drying to obtain the water-retaining and slowly-release compound fertilizer. The water-retaining and slowly-release compound fertilizer disclosed by the invention has a water-retaining property and a slowly-release property, and is capable of reinforcing the water-retaining and water-holding capacities of soil, increasing the utilization rate of water resources, increasing utilization rate of the fertilizers, reducing nutrient loss, resisting drought, and reducing the pollution of fertilization to an ecological environment; the preparation method is simple and easy to process and produce.
Owner:RUBBER RES INST CHINESE ACADEMY OF TROPICAL AGRI SCI

Camera supplementary lighting device and control method thereof

The invention provides a camera supplementary lighting device comprising a camera assembly arranged in a device main body and a video signal processing unit, wherein the device main body is provided with a light-transmitting plate and an infrared supplementary lighting lamp, corresponding to the camera assembly; the camera assembly is connected with an input end of the video signal processing unit; an output end of the video signal processing unit is electrically connected with a control circuit; and the control circuit is used for controlling the turning-on/off of the infrared supplementary lighting lamp. The control method of the camera supplementary lighting device comprises the following steps of: step 1, setting a brightness reference value R0, wherein R0 is a brightness value when a light brightness reaches the brightness for turning on the infrared supplementary lighting lamp; and step 2, comparing a brightness mean square value A of a pattern photographed by the video signal processing unit according to the camera assembly with the reference value R0. According to the camera supplementary lighting device disclosed by the invention, a special paint coating is additionally arranged to guarantee a supplementary lighting effect of the infrared supplementary lighting lamp, so that an inner circuit board and other parts cannot be observed from the outer part; and meanwhile, the infrared supplementary lighting lamp is divided into a plurality of groups to be controlled and the supplementary lighting brightness can be accurately controlled by combining with the video signal processing unit to process a brightness signal.
Owner:MIDEA GRP CO LTD

Annular circular polarization ceramic antenna based on quadrature coupling feed

InactiveCN101752664AAvoid the difficult problem of high impedance matchingIncrease freedomSimultaneous aerial operationsAntenna supports/mountingsAntenna feedBand width
The invention discloses an annular circular polarization ceramic antenna based on quadrature coupling feed, which comprises an upper layer microstrip antenna structure, an upper medium substrate, a middle layer medium substrate, a metal floor layer, a lower layer medium substrate and a bottom layer Wilkinson power divider; the upper layer microstrip antenna structure includes an annular antenna and two metal circular sheets which are small circular sheets respectively taking two points as circle centers, and are respectively positioned at the area of two arcs and inner circle; the bottom layer Wilkinson power divider is composed of a high impedance wire, a first low impedance wire, a second low impedance wire and a SMD resistor; the feature impedance of the high impedance wire is times ofthe feature impedance z0 of the first low impedance wire and the second low impedance wire; the upper layer medium substrate, the middle layer medium substrate and the lower layer medium substrate are all ceramic medium. The antenna feed mechanism adopts two circular metal sheets to generate two quadrature current sources with the same amplitude and also can extend the axial ratio bandwidth of the annular metal antenna to increase the adjusting degree of freedom of the antenna.
Owner:SOUTH CHINA UNIV OF TECH

Oil separator

The invention discloses an oil separator. The oil separator comprises a box body, a solid-liquid separation chamber, a water-oil separation chamber and a water discharge chamber are arranged in the box body, an oil collection trough and an oil-water separation device are arranged in the oil-water separation chamber, the oil-water separation device comprises an oil adsorbing plate, an oil scrapingplate, a vertical driving assembly and a horizontal driving assembly, the lower surface of the oil adsorbing plate is provided with an oil adsorbing sponge layer, the oil-water separation device further comprises an oil guiding tube, one end of the oil guiding tube is connected with the oil scraping plate, the other end of the oil guiding tube extends to the oil collection trough, and the oil guiding tube receives oil scraped off by the oil scraping plate and guides the oil into the oil collecting trough. The vertical driving assembly drives the oil adsorbing plate to contact the liquid surface in the oil-water separation chamber, the oil adsorbing sponge layer adsorbs the oil, the vertical driving assembly drives the oil adsorbing plate to rise, the horizontal driving assembly drives theoil scraping plate to abut against the oil absorbing sponge layer, and the oil adsorbed by the oil adsorbing sponge layer is scraped by the oil scraping plate, goes through the oil guiding tube, and is collected into the oil collecting trough, so the water doped in the separated oil is reduced, and the trouble of secondary oil-water separation is reduced.
Owner:GUANGZHOU HENGDE ENVIRONMENTAL PROTECTION TECH

Ink box chip, ink box and ink-jet printer

ActiveCN103707648AProtection from vandalismProcessing and production increasePrintingInkjet printingElectronic modules
The invention provides an ink box chip, an ink box and an ink-jet printer. The ink box chip comprises a chip substrate. An electronic module is installed on the chip substrate. A chip contact assembly electrically connected with the electronic module is arranged on the substrate and comprises a plurality of chip contacts, wherein the chip contacts are linearly distributed, a contact part is arranged at the outermost end of each chip contact, and the contact parts are located at the joints of contour lines of protrusion parts located on the upper row printer contact probes in the projection direction of the side wall of upper row printer contact probes and contour lines of protrusion parts located on lower row printer contact probes in the projection direction of the side wall of the upper row printer contact probes. The ink box is provided with the ink box chip, and the ink-jet printer is provided with the ink box. The chip contacts are respectively electrically connected with the upper ends and the lower ends of the printer contact probes, the mutual acting force between the chip contacts and the printer contact probes is minimum when the chip contacts make contact with the printer contact probes, and therefore the printer contact probes are protected from damage, and production efficiency can be improved.
Owner:PRINT RITE UNICORN IMAGE PROD CO LTD OF ZHUHAI

Integrated stove

The invention relates to an integrated stove which comprises a firepower-adjustable stove and a wind-power-adjustable range hood, wherein an integrated stove main body is composed of the range hood and the stove; a control component is arranged on the integrated stove main body; the control component comprises a rotating switch, a switching circuit, an integrated chip and a wind-power adjusting circuit; the rotating switch is arranged on a firepower adjusting rod of the stove; the switching circuit is electrically connected to the input end of the integrated chip; the wind-power adjusting circuit is electrically connected to the output end of the integrated chip; and the turn-on / off of the range hood is controlled by the wind-power adjusting circuit. In the integrated stove, a corresponding short circuit can be formed by a moveable contact piece and a fixed contact piece on the rotating switch along with the change of the rotating angle of the firepower adjusting rod; parameters of all resistors are adjusted, thereby causing voltage points at the input end of the integrated chip to be different; and a wind-power adjusting signal is output to the wind-power adjusting circuit according to the angle. The integrated stove has the characteristics of simple and reasonable structure, long service life and low cost; and the multi-gear linkage integrated control on the range hood and stove of the integrated stove is realized.
Owner:MIDEA GRP CO LTD

Full-automatic beverage brewing machine

The invention relates to a full-automatic beverage brewing machine, comprising a pot body and a power supply base, wherein the pot body comprises a heating cavity and a brewing cavity movably connected with the heating cavity, a circulating assembly is arranged between the brewing cavity and the heating cavity to jointly form a water loop. The circulating assembly comprises a water pump and a water circulation pipeline connected with the water pump. In the invention, the circulating assembly is additionally arranged to jointly form the water loop, and a gap is kept between the brewing cavity and the highest water level line MAX of the heating cavity, thus the heating cavity is separated from the brewing cavity, a brewed matter is ensured to be not in direct contact with the heating cavity in a water boiling process, and the brewed matter can be effectively prevented from releasing harmful ingredients after being soaked at high temperature for a long time; and the active ingredients of the brewed matter can be rapidly extracted, and the extraction concentration can be controlled, thus brewed beverage is applicable to the crowd with different tastes. By adopting the full-automatic beverage brewing machine, coffee and tea can be brewed, milk powder can be mixed, or a traditional Chinese medicine can be decocted, thus different beverages can be obtained; and the full-automatic beverage brewing machine has the characteristics of simple and reasonable structure, low cost, simplicity and convenience in operation and convenience in processing and production, multiple purposes of the machine can be achieved, and the practicability of a product is increased.
Owner:廖志文

Heat exchanger for chemical industry production

The invention relates to the technical field of heat exchange equipment and discloses a heat exchanger for chemical industry production. The heat exchanger comprises a shell, the upper surface of theshell is provided with a liquid inlet, the surface of the shell is fixedly provided with a first drive motor, the output shaft of the first drive motor runs through the surface of the shell and stretches to the interior of the shell, the right side surface of the output shaft of the first drive motor is fixedly connected with a revolving shaft, one end, which is far away from the output shaft of the first drive motor, of the revolving shaft is actively connected with a connecting plate, the connecting plate is arranged on the inner wall of the shell, the connecting plate and the first drive motor are arranged on the same horizontal plane, the top and bottom of the surface of the revolving shaft are both fixedly connected with a second drive motor. According to the heat exchanger for chemical industry production, by arranging the revolving shaft and the stirring shaft, the heat exchange is more uniform, the heat can be fully adsorbed, the heat exchange efficiency is further improved, the problem that the heat exchange efficiency is relatively low as thermal fluid and a heating device are adopted to exchange heat in the prior art is solved, and the practicability is improved.
Owner:JIANGSU TIANMAI CHEM CO LTD

Preparation method of plain weave type wire-drawing screen cloth composite material

The invention relates to a wire-drawing screen cloth technology, in particular to a wire-drawing screen cloth composite material and a preparation method thereof. The preparation method comprises the following steps: 1, preparing an outer-layer gray film and an inner-layer gray film, wherein the outer-layer gray film and the inner-layer gray film are melted and laminated to obtain PVC gray films; 2, respectively coating two side surfaces of plain weave type wire-drawing screen cloth with first layers of paste and then with second layers of paste, and heating and plasticizing the pasted wire-drawing screen cloth at 130 to 140 DEG C for 2 to 3 minutes; 3, laminating the upper and lower layers of PVC gray films at a nearly melted state with the wire-drawing screen cloth, so as to obtain the plain weave type wire-drawing screen cloth composite material. The plain weave type wire-drawing screen cloth composite material has the beneficial effects that the two side surfaces of the wire-drawing screen cloth are respectively coated with the paste agents, and then the wire-drawing screen cloth is laminated with the PVC gray films, so that the problem of air leakage is solved; the outer layers of the PVC gray films are modified into anti-UV layers, so that the plain weave type wire-drawing screen cloth composite material is high in weather resistance and wear resistance and high in elasticity; the inner layers of the PVC gray films can be firmly adhered with the pasted wire-drawing screen cloth.
Owner:FUJIAN SIJIA ENVIRONMENTAL PROTECTION MATERIAL TECH

Immersion cooling electronic equipment

The embodiment of the invention provides electronic equipment. The electronic equipment comprises a casing and a circuit board arranged in the casing, wherein the circuit board comprises a first working area and a second working area between which an isolation groove is formed; a first electronic element arranged on the circuit board and requiring to be cooled is arranged in the first working area; the casing comprises a plurality of isolation walls; the isolation walls are in tight fit with the isolation groove to form an enclosed internal space in the casing; the first working area is sealed in the internal space; a cooling working medium is arranged in the internal space; and the first electronic element is immersed in the cooling working medium. In the embodiment of the invention, the isolation groove and the isolation walls are in tight fit to form the enclosed internal space in the casing, the cooling working medium is arranged in the internal space, a heating electronic element is immersed in the cooling working medium for being cooled down, and electronic elements which are not required to be cooled down, particularly connectors, are arranged outside the internal space in an insolating manner. Therefore, the electronic equipment has the advantages of simple sealing structure and high reliability.
Owner:HUAWEI MACHINERY

Protection method for preventing frequency conversion compressor from demagnetization

ActiveCN103124064AFunction as an anti-retraction magnetImprove anti-demagnetization abilityEmergency protective circuit arrangementsFrequency conversionElectric machine
A protection method for preventing a frequency conversion compressor from demagnetization comprises a control chip arranged on the frequency conversion compressor. The control chip detects motor temperature t of the compressor and is provided with protection current Ipt corresponding to the motor temperature t. The control chip detects the motor temperature t to control maximum starting current Isatmax and running current Irun of the compressor. By means of the protection method, the control chip is utilized to detect the motor temperature t to control maximum starting current Isatmax and running current Irun of the compressor by setting the relation between the motor temperature t and the protection current Ipt of the frequency conversion compressor to achieve a demagnetization-resistant function of the frequency conversion compressor. Simultaneously, running range of the compressor is enlarged. The motor temperature t can be increased by adding a temperature rise assembly to enable the protection current Ipt to be larger than the maximum starting current Isatmax of the compressor, improve demagnetization resistance of the compressor and expand magnet application range. The protection method has the advantages of being simple and reasonable in structure, long in service life, low in cost and convenient to process and produce.
Owner:GUANGDONG MEIZHI COMPRESSOR

Air conditioner and quick startup control method thereof

The invention discloses a quick startup control method of an air conditioner. The air conditioner includes an air conditioner main body and a remote controller. The control method includes the following steps: 1) during a refrigeration operation, the air conditioner receiving a stop instruction sent by the remote controller and then entering into a standby state, the opening of an adjustable throttling member being a maximum value, high pressure refrigerant in an outdoor heat exchanger fast flowing to an indoor heat exchanger through the adjustable throttling member; 2) during a heating operation, the air conditioner receiving the stop instruction sent by the remote controller and then entering into the standby state, the opening of the adjustable throttling member being the maximum value, the high pressure refrigerant in the indoor heat exchanger fast flowing to the outdoor heat exchanger through the adjustable throttling member; and 3) the air conditioner receiving a starting instruction sent by the remote controller and restarting. An electronic expansion valve of the invention can balance a system pressure in 15 seconds, and compared with the pressure balancing time of about 3 minutes of the prior art, the time is greatly shortened, so that the air conditioner can be quickly restarted, the comfort of the air conditioner can be effectively improved and the service life of the air conditioner can be effectively prolonged.
Owner:MIDEA GRP CO LTD

Water heater for displaying available hot water and control method of water heater

InactiveCN102589138AResolve accuracySolve the hot water problemFluid heatersEngineeringHeight difference
The invention discloses a water heater for displaying available hot water, which comprises a water tank provided with a water inlet pipe and a water outlet pipe, wherein a multi-temperature sensing part is arranged on the water tank and comprises n temperature sensors, wherein n is an integer of more than or equal to 2; a height difference is formed between adjacent temperature sensors; the lengths of the temperature sensors are gradually increased in turn; the temperature sensors are arranged in a sequence of 1, 2, ..., n-1 and n from top to bottom; and the multi-temperature sensing part is provided with an independent pipe bundle corresponding to the temperature sensors. A method for controlling the water heater for displaying the available hot water comprises the following steps of: 1, setting water temperature as Tset, and starting detection when the water heater is powered on; and 2, detecting temperature T1 of the first temperature sensor in the multi-temperature sensing part, judging whether T1 is lower than the set water temperature Tset, if so, entering a step 3, otherwise, entering a step 4. Due to the multi-temperature sensing part, the water temperature of the water tank and the available hot water information are acquired and transmitted to a display operating part for display.
Owner:HEFEI MIDEA HEATING & VENTILATING EQUIP
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