27results about How to "No cost" patented technology

The invention provides a control system and method for improving the performance of an electromagnetic proportional valve, and the system comprises a controller which is connected with the electromagnetic proportional valve and is used for outputting a trapezoidal wave current signal with a certain frequency to the electromagnetic proportional valve when being powered on, and controlling the opening and closing of the electromagnetic proportional valve, hydraulic oil in the valve body of the electromagnetic proportional valve is stirred along with movement of the valve element, and the problems that the movement speed of the valve element is abnormal and the output pressure is abnormal due to the fact that the content of impurities in the oil is uneven are solved. The controller is further used for outputting a trapezoidal wave current signal to the electromagnetic proportional valve and controlling the electromagnetic proportional valve to be opened and closed when the electromagnetic valve of the whole vehicle operation safety handle switch is opened, new oil enters the electromagnetic proportional valve through the oil inlet in the process that the valve element moves back and forth, and the oil alternately flows out of the outlet and the oil return opening. Impurities flow out through circulation, and the purpose of cleaning is achieved. According to the control system and method, the problem that the electromagnetic proportional valve is poor in consistency due to long-time use and oil pollution is solved.

The invention relates to a laser transmitting and receiving device, a method for carrying out optical axis self-calibration on the laser transmitting and receiving device and a machine readable storage medium. An optical amplifier of the device comprises: a first optical amplifier assembly configured to be connected to a transmitting mirror group via a transmitting optical fiber; a second optical amplifier assembly configured to be connected to the receiving lens group via a receiving optical fiber; a calibration light supply device configured to be associated with the first optical amplifier assembly to provide calibration light; and an optical power detector connected to the second optical amplifier assembly and configured to detect at least the power of the calibration light. In a case where the lead galvanometer is adjusted to scan, the calibration light is provided to the position detector to perform a first measurement of optical axis self-calibration, and the calibration light passing through the receiving mirror group is provided to the optical power detector to perform a second measurement of optical axis self-calibration. According to the laser transmitting and receiving device, calibration is carried out by means of existing devices, laboratory calibration is not needed, and the calibration result is not affected by the environment.

The invention belongs to the technical field of driving motors, and particularly relates to a shaft end structure for preventing electric corrosion of a bearing and a motor. A shaft end structure capable of preventing electric corrosion of a bearing comprises a shaft end shell installed on an external work piece and a PCB installed in the shaft end shell, a contact seat is arranged on the PCB, a shaft end driving assembly is installed on the contact seat, the shaft end driving assembly comprises an output shaft and a connecting bearing, and the shaft end structure further comprises a wiring end set. The wiring terminal group comprises an external wiring terminal and a grounding wiring terminal; the motor comprises the shaft end structure and further comprises a motor support and an external work piece, the shaft end shell is installed on the motor support, and the external work piece is installed on the output shaft. The invention provides a shaft end structure for preventing electric corrosion of a bearing and a motor, and aims to solve the problems of difficulty in operation, high cost and higher potential risk existing in a bearing electric corrosion protection scheme in the prior art.

The invention discloses a preparation method of colloidal silicon dioxide, which comprises the following steps: adding an organic alkali solution into ultrapure water, then adding a proper amount of alkoxy silane, stirring to obtain a clear and transparent solution, and then adding a stabilizer solution to obtain hydrolysate; adding an organic alkali solution into a certain amount of hydrolysate to obtain a mother solution; heating the mother liquor to 90-100 DEG C, and preserving heat for at least 10 minutes to obtain a silicon dioxide crystal nucleus; heating the crystal nucleus until the crystal nucleus is boiled, and dropwise adding hydrolysate under the condition that the pH value of a system is 9.0-10.5 to prepare a dilute silicon dioxide solution; and removing excess water from the dilute silicon dioxide solution in a boiling state to obtain colloidal silicon dioxide. The preparation method is simple, convenient and stable in process. The obtained colloidal silicon dioxide nanoparticles are very high in purity, and the total metal impurity content is 1t; the pH value is 9.0-10.5, the particle size is 20-80 nm, the solid content is 20-40%, and the polishing agent is very suitable for being applied to an integrated circuit polishing process.

The present application discloses an analysis method, device and storage medium for sequencing data of non-invasive prenatal genetic testing. The method of the present application includes obtaining the original sequencing results of samples with two or more chromosomal aneuploidies from NIPT sequencing data, aligning them with the reference genome, and removing mismatched or duplicate reads; calculating the Z values ​​of chromosomes other than Y and chromosome 19 according to the NIFTY algorithm, and calculating the average of the top five absolute values ​​of the Z values. If it is greater than the threshold, the subject to be tested is judged to be a high-risk population for tumors. The present application is the first to use the average of the top five absolute values ​​of the chromosome Z values ​​of MCA samples in NIPT testing to evaluate the tumor situation during pregnancy. The analysis method of the present application can directly use NIPT sequencing data, which is simple and convenient, and there is no additional cost other than NIPT sequencing, which further expands the use of NIPT in detecting occult maternal cancers during pregnancy.

The invention relates to shrimp shell separation equipment in shrimp meal, which comprises an equipment main body, a separation cavity for separating shrimp shells from shrimp meat is arranged in the equipment main body, a separation mechanism is arranged in the separation cavity, and the separation cavity is divided into a first cavity and a second cavity by the separation mechanism; a water flow inlet communicated with the separation cavity is formed in one end of the equipment main body, a shrimp meat outlet and a shrimp shell outlet are formed in the other end of the equipment main body, the shrimp meat outlet is communicated with the first cavity, the shrimp shell outlet is communicated with the second cavity, and a feeding mechanism is arranged above the end, close to the water flow inlet, of the equipment main body. The device is simple in structure, can well separate shrimp shells from shrimp meal, and has the advantages of being low in cost, natural, green and free of additives.

The present invention discloses a bottle cap, comprising a main cap 1 and a sub-cap 2, wherein the sub-cap 2 is one or more, and the main cap 1 and the sub-cap 2 are detachably connected or integrally connected, the main cap 1 is provided with an opening piece 3 integral with the main cap 1, the sub-cap 2 is provided with an impact end 4, the opening piece 3 is provided with an impacted end 31, and the upper end or the lower end of the opening piece 3 is provided with a petal-shaped body or a strip-shaped body; the technical solution of the present invention is structurally very suitable for mold making and high-speed product production, the bottle cap is opened simply and labor-savingly, liquid can be used without contacting the liquid flow area of ​​the main cap, the use process is simple and convenient and the cost is low, there is no cost increase compared to the original product, it is more hygienic and convenient, and more suitable for daily use.

The invention belongs to the technical field of metal processing, and particularly relates to an environment-friendly microemulsion with high extreme pressure property and a preparation method thereof. The microemulsion comprises the following components in parts by weight: 15-20 parts of base oil, 5-8 parts of an emulsifier, 8-12 parts of an alkali storage agent, 8-10 parts of a water-based lubricant, 10-15 parts of an extreme pressure lubricant, 8-10 parts of an antirust agent, 2-4 parts of organic alcohol, 1.0-1.5 parts of a metal corrosion inhibitor, 1-2 parts of a bactericide and 30-50 parts of deionized water. Wherein the extreme pressure agent azacyclo-phosphate is prepared from benzotriazole and phosphate, aminated azacyclo-phosphate is obtained through modification, and the aminated azacyclo-phosphate is compounded with different water-based lubricants, so that an environment-friendly microemulsion with low odor and excellent extreme pressure lubricating performance and cooling performance is obtained; the requirement on the glossiness of the hard alloy surface can be met.

The invention provides a touch control method and device and touch display equipment, and relates to the field of display. The touch control method comprises the following steps: receiving a frame indication signal of the display device, wherein the frame indication signal is used for indicating a default frame frequency of the display device; a scanning driving signal of the display device is received, the scanning driving signal is used for indicating the refresh frequency of the display device, and the refresh frequency is dynamically adjusted according to operation of a user on the display device; according to the frame indication signal, acquiring the level state of the scanning driving signal for multiple times at a default frame frequency; and judging whether to adjust the touch parameters of the touch device to reduce the power consumption of the touch device or not according to the level states acquired for multiple times. According to the scheme, the touch control device does not need complex logic judgment, and whether the touch parameter adjustment of the touch control device is executed or not can be judged only by collecting the level state of the scanning driving signal frame by frame so as to reduce the power consumption of the touch control device. According to the scheme, the judgment response time is short, extra cost is avoided, and the touch power consumption can be quickly and effectively reduced.

The invention discloses a carbon fiber reinforced ceramic matrix composite resin carbon interface layer and a preparation method thereof, and relates to the technical field of interface layer preparation. The method comprises the following steps: dipping a carbon fiber preform in a KH-550 proportioning solution, and then drying to obtain a pretreated carbon fiber preform; dispersing carboxylated carbon nanotubes in a KH-550 proportioning solution, adding the pretreated carbon fiber preform, dipping, and drying; and dipping, curing and cracking in a phenolic resin ethanol solution to prepare the carbon fiber reinforced ceramic matrix composite resin carbon interface layer. The liquid phase impregnation method adopted by the invention is based on chemical bonding, and the interface layer is combined with the carbon fibers through certain chemical acting force, so that the mechanical property of the composite material can be effectively optimized. The method solves the problems of complex instruments, high cost and time consumption in preparation of the resin carbon interface layer by the existing liquid phase permeation method.

The invention relates to the technical field of photovoltaic modules, in particular to a photovoltaic power station intelligent centralized control cleaning system which comprises a secondary air storage tank, an air injection pipe assembly and a distribution device, an air injection branch pipe is provided with an air injection inlet and an air injection nozzle, and the distribution device comprises an air distribution valve and a hose. The hose is sleeved with a limiting arm which can be opened or folded to limit the hose in the hose, the air distribution valve is provided with a plurality of air distribution outlets, and an air pipe is connected between each air distribution outlet and the air injection inlet; at least one secondary gas storage tank, a distribution device and a gas ejector pipe assembly are arranged on each set of photovoltaic power generation system, and a plurality of sets of photovoltaic power generation systems are provided with one primary gas storage tank. Therefore, the purpose of carrying out centralized intelligent cleaning control on all photovoltaic power generation systems in the photovoltaic power station in various forms such as synchronization, real-time and point-to-point modes can be achieved on the structure of the system device, meanwhile, the maintenance and cleaning time of the whole power station can be greatly shortened through the overall simultaneous cleaning mode, and the cleaning cost is reduced.

The utility model relates to the technical field of photovoltaic module protection, in particular to a photovoltaic module with a cooling function, which comprises a photovoltaic module main body, four sides of the photovoltaic module main body are sleeved with a protective frame, the back of the protective frame is fixedly connected with a heat conduction device, a connecting plate is arranged below the heat conduction device, and the connecting plate is fixedly connected with the photovoltaic module main body. A heat dissipation assembly and a temperature sensing device are arranged in the connecting plate, the heat dissipation assembly comprises a fan frame, the middle of the fan frame is fixedly connected with a supporting frame and a protective cover, the back vertical face of the supporting frame and the back vertical face of the protective cover are flush with the upper surface and the lower surface of the fan frame respectively, and the side, facing the protective cover, of the supporting frame is fixedly connected with a rotating motor; and the output end of the rotating motor is fixedly connected with fan blades. The photovoltaic module cooling device can actively cool the photovoltaic module so as to ensure the conversion effect and protect the safety of the module.

The utility model discloses a feeding device of flour processing equipment, which belongs to the field of feeding devices and comprises a spiral feeder and a stirring mechanism, and a first motor is started to drive an output end to drive a stirring shaft to rotate through a first rotating rod. According to the spiral feeder, flour materials which are put into the hopper and need to be conveyed can be stirred through the stirring rods on the stirring shaft, blocky materials can be scattered in the stirring process, therefore, the problem that the materials are blocked in the spiral feeder can be avoided, the conveying efficiency of the materials is improved, and meanwhile the adjusting mechanism is matched for use, so that the conveying efficiency of the materials is improved. A second motor is started to drive an output end to drive a screw rod to rotate through a second rotating rod, so that a connecting plate can move downwards along the screw rod through a nut and drive an extension pipe to move downwards outside a discharging pipe, and the length of the discharging pipe is adjusted and extended by adjusting the extension pipe; and therefore, the screw feeder can be quickly butted with processing equipment with different heights.

The present invention relates to isolation protective clothing for medical staff to treat epidemic patients. The head and neck part of a smart protective clothing is separated from the trunk and limbs into two independent spaces. A breathing passage is provided in the head and neck part, and a heat dissipation passage is provided in the trunk and limbs. The heat dissipation passage timely removes excess heat from the smart protective clothing to prevent medical staff from sweating. The breathing passage realizes power-assisted group breathing, which can increase the number of layers and density of the filter membrane to achieve better filtering effect and reduce the energy consumption of the chest muscle group of medical staff. A smart protective clothing is disinfected and reused using a smart protective clothing double disinfection device, which solves the problem of severe shortage of protective products during the outbreak of epidemics. The smart protective clothing performs real-time pressure detection during use, detects damage in time and alarms, and reduces the risk of infection for medical staff. The light-weight and low-cost blow-molded overall transparent helmet has no sense of oppression and avoids the oppression of the facial tissue of medical staff by goggles and masks.

The invention relates to a comprehensive internet medical data cleaning method and system and electronic equipment, and belongs to the field of medical data processing. The method comprises the steps that a data cleaning framework is constructed to conduct comprehensive data cleaning on acquired medical data, and a quality filtering module in the data cleaning framework screens and cleans the data based on keywords, text statistical features and measurement features. The data cleaning framework comprises four modules: a format unification module for converting medical data into a unified standard format; the quality filtering module is used for eliminating noise and invalid information in the data; the data deduplication module identifies and deletes duplicate information in the data on a text level and a line level; the privacy removal module recognizes and removes personal identity recognition information. The method improves the quality of Chinese internet medical data, efficiently processes a large amount of medical dialogue data, has the characteristic of high modularization, supports off-line deployment, does not generate extra cost, and effectively avoids the problem of privacy disclosure.

The utility model relates to the technical field of electromechanical brake, concretely relates to a moving coil type electromagnetic catapult short circuit brake system, including power supply device, A phase conducting rail, B phase conducting rail, C phase conducting rail, first switch group, second switch group, third switch group, runner coil and a plurality of stator, the A phase conducting rail, the B phase guiding rail and the C phase guiding rail are parallelly laid along the catapult track, the A phase conducting rail, the B phase guiding rail and the C phase guiding rail are divided into acceleration section and deceleration section, the A phase conducting rail, the B phase guiding rail and the C phase guiding rail of the deceleration section are short circuited through the third switch group, the utility model discloses through adopting the third switch group direct short circuit A phase conducting rail, B phase guiding rail and C phase guiding rail, can realize very fast response speed brake runner coil, has solved the technical problem such as the brake system response slow of prior art, maintenance cost is high.

A method for manufacturing molybdenum trioxide powder is provided, which can reduce material costs and decrease the environmental impact and waste costs associated with the disposal of byproducts generated during roasting. The manufacturing method includes: a first roasting step of roasting a first raw material mixture comprising a molybdenum oxide precursor compound and metal compound particles other than molybdenum compounds in a sagger; a first cooling step of generating molybdenum trioxide powder; a first crushing step of crushing a residue in the sagger containing metal oxides derived from the aforementioned metal compound particles to form first crushed particles; a second roasting step of roasting a second raw material mixture comprising a molybdenum oxide precursor compound and the first crushed particles in a sagger; a second cooling step of generating molybdenum trioxide powder; and a second crushing step of crushing a residue in the sagger containing metal oxides derived from the first crushed particles to form second crushed particles.

The invention belongs to the technical field of fermented feed, and particularly relates to a method for liquid fermentation of Maotai-flavor vinasse. The invention provides a method for fermenting Maotai-flavor vinasse by using poria cocos bacteria, which is suitable for liquid fermentation of vinasse and has high cellulase activity and good acid environment tolerance, by carrying out adaptability screening on strains and vinasse, and a liquid vinasse culture medium is inoculated with a seed solution of the poria cocos bacteria strains for fermentation culture. Furthermore, a liquid fermentation system, fermentation components and fermentation conditions are optimized, so that a cellulose barrier in the Maotai-flavor vinasse is effectively broken, and nutrient substances are released and converted; maotai-flavor vinasse resources are converted into functional protein feed which is free of pollution, low in cost and high in safety, the value and functionality of the Maotai-flavor vinasse protein feed are greatly improved, and meanwhile the Maotai-flavor vinasse protein feed can be digested and absorbed by monogastric animals more easily.

The utility model discloses a cup and bladder water rises forming device, including forming machine, integrated send and take material subassembly, surround and control box, the forming machine includes workstation, support frame and execution subassembly, the integrated send and take material subassembly includes vertical drive arrangement, horizontal drive arrangement, bearing frame, clamping arm, drive motor and transmission part, vertical drive arrangement links with workstation, horizontal drive arrangement links with vertical drive arrangement, bearing frame links with horizontal drive arrangement, clamping arm and bearing frame sliding fit, transmission part and bearing frame rotation cooperation, drive motor and transmission part transmission connection, the utility model discloses when carrying out processing to cup and bladder, through vertical lifting device, parallel shift device accurate control position, servo motor drive linkage shaft realizes clamping arm automatic clamping and placing, both avoid the security risk of manual operation, and do not need to bear the high cost of mechanical arm, and give both economic efficiency and practicality.

The invention belongs to the field of waste gas treatment, and particularly relates to a preparation method of a red mud-based mercury and sulfur removal material, which comprises the following steps: aging and modifying a solution containing red mud, carbonate, a selenium source, an additive and an auxiliary agent, and then carrying out solid-liquid separation to obtain the red mud-based mercury and sulfur removal material, the auxiliary agent comprises at least one of ferric chloride, ferrous sulfate and polyferric sulfate. The invention also comprises the red mud-based mercury and sulfur removal material prepared by the preparation method and application of the red mud-based mercury and sulfur removal material in mercury removal and sulfur removal. The carbonate, the selenium source, the additive and the assistant are creatively combined to modify the red mud, so that the characteristics of the red mud can be fully utilized, the network structure and active sites of the adsorption material are synergistically endowed and optimized, and the exposure characteristics of the active sites are improved; further, the synchronous removal effect of the prepared red mud-based material on sulfur dioxide and mercury is improved.

The invention discloses a reactive power compensation system for a distribution network, and relates to the field of power compensation. The reactive power compensation system for the distribution network controls a VHO high voltage or a VLO low voltage output through a single chip microcomputer pin in a high-low voltage conversion circuit by controlling a 9013 triode. Meanwhile, a three-bit combination switch SW is connected to the single chip microcomputer pin through a pull-down resistor, and a total of 8 high voltage maintenance times can be provided. When a control terminal COM in an input and output terminal row JP is disconnected, a P32 pin is at a high level, and both QH and QL power tubes are disconnected, and at this time, a stable control circuit has no output. When COM is connected to a ground (Jp6), a P32 pin is at a low level, and QH conducts high voltage output. After a period of time, QH is disconnected, and QL is connected to low voltage output. Until COM is disconnected from the ground, QH and QL are both cut off, and at this time, the stable control circuit has no output. After the reactive power compensation is performed on the distribution network circuit, a lower voltage is used to maintain the reactive power compensation of the distribution network circuit, so as to control energy costs.

The invention discloses a section scanning electron microscope sample suitable for a metal micro guide wire and a preparation method of the section scanning electron microscope sample. Belongs to the technical field of material microscopic analysis. The preparation method comprises the following steps: fixing the metal micro guide wires by constructing conductive rigid clamps, filling conductive adhesives among the conductive rigid clamps, and arranging a plurality of metal micro guide wires among the conductive adhesives; the metal micro guide wires are exposed out of the two ends of the conductive rigid clamp by 0.5-1.5 cm; and the diameter of the metal micro guide wire is 45-500 microns. The invention provides a preparation scheme of a metal microwire section scanning electron microscope sample, which is simple to operate and does not need any large equipment, and provides a rigid and conductive support system capable of performing directional electrolytic polishing for a soft and fine metal wire on the premise of not introducing external stress, not polluting the sample and not using expensive equipment. Therefore, the scanning electron microscope samples are efficiently prepared in batches at low cost, and the high-resolution characterization requirement is met.

This utility model discloses an aphid collection device in the field of insect rearing technology, comprising an outer cylinder and a cylinder cover arranged correspondingly to each other. The cylinder cover is horizontally installed on the upper end of the outer cylinder. A rotatable inner cylinder is fitted inside the outer cylinder. A lower center seat is provided on the bottom wall of the inner cylinder. A vertical lower positioning shaft is provided at the lower end of the inner cylinder, and a vertical upper positioning shaft is provided at the upper end of the inner cylinder. An upper positioning seat is provided at the lower center of the cylinder cover. The upper positioning shaft is inserted into the upper positioning seat, and the lower positioning shaft is inserted into the lower positioning seat. A driven gear is sleeved on the outer circumference of the upper positioning shaft. A driving mechanism is provided on the cylinder cover corresponding to the driven gear. A closing mechanism is provided between the cylinder cover and the outer cylinder. This utility model aims to significantly improve the aphid collection speed and increase the collection quantity, meeting the needs of large-scale applications.

The invention discloses a cadmium-polluted farmland remediation method, which relates to the technical field of soil pollution treatment and environmental remediation, and mainly comprises the following steps: S1, dividing a cadmium-polluted land into a plurality of operation land parcels; s2, any one of the operation plots is divided into layered soil not smaller than three layers from top to bottom according to the cadmium content, the first layer of soil is cadmium-contaminated soil, the last layer of soil is clean soil, and the middle layer of soil is buffer layer soil; s3, the multiple layers of soil of the first operation land parcel are dug out in sequence to form pit slots, and the multiple layers of soil are stored separately; s4, the multiple layers of soil of the next operation land parcel are dug out in sequence to form pit slots, and the multiple layers of soil are inversely backfilled into the pit slots of the previous operation land parcel; and S5, the step S4 is repeated till backfilling of all the operation land parcels is completed. The method has the advantages of being high in operability, free of secondary pollution, economical and efficient, the problem of cadmium pollution of plots can be thoroughly solved, and the workload is small.

The invention discloses a method for screening an antiviral drug, which comprises the following steps: acquiring a genome of a virus, calculating the dN / dS ratio of a gene in the genome, and selecting the gene with the dN / dS ratio greater than 1 or the dN / dS ratio less than 0.5 as a target gene; predicting a three-dimensional structure of a target gene encoding protein, and screening a drug combined with the three-dimensional structure through a molecular docking technology to obtain the antiviral drug, carrying out expression purification on the target gene, and carrying out surface plasma resonance experiment on the target gene and the screened antiviral drugs to remove inapplicable antiviral drugs; according to the screening method of the antiviral drug, the molecular evolution theory and docking of protein and the drug are utilized, the antiviral drug can be rapidly screened from drugs sold in the market, the screening method is suitable for all viruses, vaccines are avoided, the research and development time is shortened, the cost is reduced, and the screening method is suitable for large-scale popularization and application. The screening method is rapid and reliable, has no side effect, is relatively low in price, and can rapidly find an antiviral specific medicine.