278results about How to "Meet the needs of actual use" patented technology

The invention provides a technology for preparing a needle coke raw material from coal-tar pitch. The technology comprises the following steps of 1, fully mixing asphalt and a solvent, and removing insoluble substances in the mixture by a physical separation method, wherein the solvent is a mixture of coal light oil and coal aromatic oil or is a mixture of BTX and coal aromatic oil; a mass ratio of the coal light oil or the BTX to the coal aromatic oil is in a range of (20: 80) to (95: 5); and a mass ratio of the solvent to the asphalt is in a range of 0.5 to 10, 2, feeding a clear liquor without the insoluble substances into a separator, and separating the light solvent from the clear liquor to obtain a heavy fraction having low QI, and 3, carrying out hydrotreatment on the heavy fraction in the presence of a hydrogenation catalyst at a temperature of 300 to 450 DEG C under the pressure of 5 to 20MPa. The needle coke raw material obtained by the technology has low sulfur content and a small expansion coefficient.

The invention relates to the technical field of ceramic materials, in particular to a method for preparing high-compactness silicon nitride ceramic by adding composite additives. Auxiliary materials are prepared from, by mass, 70-90% of silicon nitride, 4-15% of metal oxide, 3-12% of rare earth oxide, 0.5-3% of a binding agent, 0-8% of silicon dioxide, 0-3% of cesium fluoride, 0-1% of a dispersing agent and 0-0.15% of a defoaming agent. The raw materials, grinding medium balls and dispersing media are mixed and dried and then are screened, and granulation powder is obtained; the granulation powder is placed in a mold to be pressed into green bodies, the green bodies are placed in a sintering furnace after being dried, and the high-compactness silicon nitride ceramic is obtained through sintering under nitrogen protection. By mans of the preparation method, the silicon nitride ceramic can be sintered at normal pressure, operation is easy, convenient and feasible, cost is low, and the preparation method is suitable for industrial production. Besides, the silicon nitride ceramic obtained through sintering is good in compactness and high in bending strength and can be widely used as structural element materials in the fields of machinery, metallurgy, aerospace and the like.

The invention relates to a method for removing carbon dioxide in natural gas by utilizing a novel high specific surface active carbon material. The method comprises the following steps of: washing the active carbon material in a reactor by utilizing an inert gas; heating and removing impurities; vacuumizing, and introducing the natural gas to the reactor filled with the active carbon material; adsorbing the carbon dioxide and discharging the carbon dioxide-removed natural gas; then reducing the pressure to a normal pressure, and then desorbing a nitrogen gas through the active carbon material at the room temperature to obtain the carbon dioxide-removed natural gas. By utilizing the adsorption method of the active carbon material, the content of the carbon dioxide in the natural gas can be reduced to 0.05 volume%, the volume of the treated natural gas is more than 1,000 times that of the active carbon material of the method, the selectivity is still kept through adsorption and desorption cycles, therefore, the active carbon material of the method can satisfy the actual use requirement and has favorable application prospect.

The invention discloses an application uploading method which includes the following steps: S1: classifying files of an application into a program part, a material part and a basic-information part; S2: deploying the files of the application to a checking server; S3: performing a checking test on the application by an administrator; S4: installing the application which passes the checking test to a release platform server; S5: performing an online release operation on the application which is already installed on the release platform server when an online instruction is received so that the application is in an online state and a user can use the application. The application uploading method is capable of ensuring the stability and normativity of the application and high in uploading speed, convenient in modification of the release and capable of meeting practical use demands.

The invention relates to a new energy vehicle water-cooling motor shell manufacturing process and its structure. The water-cooling motor shell manufacturing process is reasonably designed and is capable of increasing the various performance parameters of the water-cooling motor shell. According to the invention, after eleven steps of processing and manufacturing referred to as from (a) to (k), the water-cooling motor shell is characterized by its stable and reliable structure, absence of casting defects and residual sand cores in spiral waterway and up-to-scratch hardness. Therefore, the service life time of the water-cooling motor shell is increased and the actual utilization need can be met.

The invention discloses a biomass raw material granulating and forming device, and relates to the technical field of biomass processing. The device comprises a base, supporting rods are arranged on the upper surface of the base in an annular array mode, and a cylinder is fixed to the top ends of the supporting rods; an extrusion plate is arranged in the cylinder; a rotating shaft is rotationally connected between the bottom end and the top end of the cylinder; a connecting seat is fixed at the top of the rotating shaft; rolling sleeves sleeve the peripheral side surfaces of the two ends of theconnecting seat; a rectangular box is arranged at the top of the cylinder; two crushing rollers are rotationally connected between the opposite faces of the inner sides of the rectangular box. A material guide cylinder is arranged on one side of the rectangular box; and a material guide frame is rotationally connected between the end part of the material guide cylinder and the rectangular box. Raw materials are conveyed through the material guide frame, the two crushing rollers crush the raw materials for the first time, the rotating shaft rotates the connecting seat to enable the rolling sleeves to roll annularly to crush the raw materials for the second time, the uniformity of biomass particles after granulation is guaranteed, the extrusion plate is prevented from being blocked in the raw material extrusion process, and the actual use requirement is met.

The invention discloses a stretching straightening device for metal pipe machining, and relates to the technical field of pipe machining. The device comprises a supporting plate, wherein the two endsof the supporting plate are in sliding fit with stretching frames respectively; one end of the supporting plate is fixedly connected with a first air cylinder; the end of the first air cylinder is fixedly connected with one stretching frame; a hanging frame is hinged to the side surface of the bottom of the other stretching frame; and one end of the hanging frame is in suspended connection with the supporting plate. Two movable frames are in sliding fit with the surface of the supporting plate. Brackets are in sliding fit with the inner sides of the movable frames, and adjusting screw rods inthreaded fit with the tops of the movable frames are rotationally connected with the top ends of the brackets. The brackets slide in an ascending and descending mode through the two movable frames under the action of the adjusting screw rods, the two ends of a bent metal pipe can be aligned with the two stretching frames, and the stretching frames can conveniently and directly fix the bent metal pipe; expansion type clamping and fixing are carried out from the inner side of the metal pipe to the outside, so that the situation that the end of the metal pipe is flattened is avoided; and metal pipes with different calibers can be clamped, and the universality is high.

The invention relates to the field of medicine, and in particular relates to a cefprozil compound, and dispersible tablets, a dry suspension and a preparation method thereof. The cefprozil compound is a crystal, and an X-ray powder diffraction diagram obtained by Cu-K alpha ray measurement is shown in figure 1. Through experimental detection, the cefprozil dispersible tablets and the dry suspension have the advantages of superior stability and quite good smell and taste, and are quite suitable for clinical application.

The invention relates to the technical field of coal ash machining devices, and discloses a coal ash production grinding device with a quantitative bagging function. The coal ash production grinding device comprises a body, wherein a moving assembly is movably connected to the interior of the body. Through interaction among a rotating shaft, a first gear, a first rack, a push rod, a second gear, afirst feeler lever, a stop lever, a baffle, the moving assembly, a return assembly and a monitoring assembly, coal ash can be quantitatively bagged after being screened, so that the coal ash does notneed to be bagged through an additional quantitative bagging device after being screened, the time needed in the coal ash production process is greatly shortened, and meanwhile, the practicability ofthe coal ash production grinding device is greatly improved, the actual use requirement is better met, and in addition, the amount of the coal ash inside the device can be monitored in real time through the monitoring assembly, so that the situation that the quantitative bagging requirement cannot be met due to the fact that the amount of coal ash inside the device is too small is avoided.

The invention relates to an adjustable hinge applied to a door and window. The adjustable hinge comprises a movable mounting body and a fixed mounting body, the fixed mounting body comprises a fixed base, a movable sliding block and a locking limiting block, a trapezoid transverse groove is formed in the fixed base, the movable sliding block is a trapezoid sliding block part, the movable sliding block is sleeved with the trapezoid transverse groove, a vertical groove transversely penetrating the trapezoid transverse groove is formed in the fixed base, a clamping groove is formed in the movable sliding block, one end of the locking limiting block is hinged into one end of the vertical groove, the middle of the locking limiting block is clamped in the clamping groove of the movable sliding block, a locking screw is arranged at the other end of the locking limiting block, a screw hole is formed in the bottom of the other end of the vertical groove, and the locking screw is locked into the screw hole. According to the hinge, the opening angle can be adjusted, after adjustment, 180-degree opening of a door and window sash can be achieved, actual use needs of people can be effectively met, and the hinge is simple in structure, easy to obtain, convenient to adjust, simple and easy to use.

The invention discloses a hot start ballast and low-frequency full bridge circuit of a metal halide lamp. The hot start ballast and low-frequency full bridge circuit comprises a filter circuit, a flyback transformation circuit, a controller, an auxiliary power supply circuit, a low-frequency full-bridge circuit, a driving circuit and an ignition unit, wherein the input end of the filter circuit is connected with a low-voltage DC input power supply, the output end of the filter circuit is connected with the flyback transformation circuit, and the controller is connected with the flyback transformation circuit. According to the invention, ignition can be realized in the low-frequency voltage, so that the metal halide lamp can be lightened when the lamp is hot, practical using requirements are met, service life of a metal halide lamp bulb is ensured, and use is realized effectively; and the single-end flyback transformation circuit works in the continuous work mode, so that the conduction EMI noise ratio is greatly reduced; and the duty ratio is adjusted, and power-constant work and circuit protection can be realized rapidly in the precise power-constant control process.

The invention discloses a collection method and a collection device for coal mine ventilation air methane. The collection device comprises a transitional pipeline and an air collection pipeline, wherein the transitional pipeline is a reducer pipe of which the diameter is reduced gradually; the large end of the transitional pipeline is connected to an air collection opening which is adjacent to the streamline ending position of an outlet on the outer side of a diffuser of a main ventilator of a mine; and the air collection pipeline is connected to an outlet at the small end of the transitional pipeline. In the collection device, the air collection pipeline collects ventilation air methane by utilizing the loss of the kinetic energy of the ventilation air methane under the guiding action of the transitional pipeline, so the normal work condition of the coal mine main ventilator is not influenced, new energy consumption is also not formed, the utilization rate of coal mine methane is improved, and a greenhouse gas effect is avoided. The collection device has a simple structure, is convenient to use, low in collection cost and high in recovery benefit, and can be widely suitable for collecting the ventilation air methane discharged from the diffuser of the coal mine main ventilator.

The invention discloses a shell of electronic equipment. The shell comprises a first shell body, a second shell body and a supporting frame, wherein the first shell body is a plastic shell body; the second shell body and the first shell body are assembled to form an electronic element containing cavity; and the supporting frame is arranged in the electronic element containing cavity, is supported between the first shell body and the first shell body and is used for enhancing the intensity of the first shell body. According to the shell of the electronic equipment, disclosed by the invention, the first shell body is the plastic shell body and has a light weight, so that lightening and thinning of the electronic equipment can be easily realized; and meanwhile, the supporting frame can be used for enhancing the intensity of the first shell body so that the intensity of the first shell body can meet the use requirements of the electronic equipment. The invention further discloses the electronic equipment which applies the shell above; the shell has the light weight so that the lightening and thinning of the electronic equipment can be easily realized; and meanwhile, the intensity of the shell is relatively great under the action of the supporting frame and actual use requirements can be met.

The invention discloses a watermark embedding and extracting method based on two-dimensional adaptive Fourier decomposition, and relates to the technical field of information security. According to the method, a frequency component of a watermark image is embedded into a source image in a spatial domain, a part of information of the watermark image is converted into a complex form of extraction key with enough complexity for watermark extraction, and the watermark information added into the source image is reduced. Therefore, the processing of color and large-size watermark images can be realized. The anti-attack capability and the anti-interference capability of the watermark image are greatly improved through the extraction key in the complex form. The extracted watermark image is anti-attack and has relatively high quality. According to the method, a self-adaptive Fourier decomposition algorithm is introduced into a watermark technology, and a method combining a spatial domain watermark technology and a frequency domain watermark technology is provided by utilizing the characteristic that different image decomposition expansions are different, so that the actual use requirementsin the field of information encryption and the field of copyright protection can be met.

The invention discloses a method for distributing regions and setting points of multiple-quantity and multiple-type sensors and relates to a technology for distributing regions and setting points of sensors in the application field of sensor distribution. The method is realized by taking the action radius of each distribution point as the radius of an ideal elastic ball and setting initial positions of distribution points by any way; adjusting the position of each distribution point through calculating the elastic mechanics stress of each distribution point according to the stress; and finally enabling each distribution point to be distributed to the reasonable position through iteration. The invention has the advantages of adapting to the distribution of multiple-type sensors with different detection ranges and detection depths in any complex region, and the like, ensures most even distribution of the distribution points, is particularly suitable for the application for distributing multiple-quantity and multiple-type sensors in complex regions with the aid of a computer and can be also applied to the aspect of graphics polygonal symbolism filling.

The invention discloses an integration cooker capable of adjusting the volume of a smoke collection cavity and a making method of the integration cooker. The integration cooker comprises an integration cooker body and the adjustable smoke collection cavity, the top of the adjustable smoke collection cavity is communicated with a cooking fume suction groove in the top face of the integration cookerbody, and a supporting mechanism is arranged on the side face of the adjustable smoke collection cavity, and connected with a lifting driving mechanism and a limiting sliding mechanism. The making method of the integration cooker comprises the steps of machining the integration cooker body, machining and installing the adjustable smoke collection cavity, machining and installing the supporting mechanism, installing the lifting driving mechanism, installing the limiting sliding mechanism, and conducting pilot running on the integration cooker. According to the integration cooker, through the design of the adjustable smoke collection cavity, the smoke collection cavity is close to or away from a draught fan, flexible adjustment of wind power in the shifting process of the draught fan is satisfied, and it is avoided that the wind power is suddenly increased or decreased; moreover, up-down floating adjustment on wind power can be made when the draught fan is at different gear positions, the adjustment on the wind power of the integration cooker is diversified, air flow is smoother, and the noise is lowered.

The embodiment of the invention provides an authentication method, equipment and a server. The method comprises the steps that terminal equipment receives an initial authentication request message inputted by a user, and the initial authentication request message is used for requesting the verification of the permission of the terminal equipment to an application; the terminal equipment logs in the certificate of the target account of the application by using the terminal equipment and performs authentication interaction with the application server, and the certificate of the target account isstored in the security element of the terminal equipment. According to the authentication method, the authentication equipment, the authentication server and the application server provided by the embodiment of the invention, the account can be authenticated by the application server through the certificate of the account in the security element of the terminal equipment so as to verify whether the identity of the user using the terminal equipment is legal or not. According to the authentication method, the application server can quickly, stably and safely carry out identity authentication onthe user using the terminal equipment, and limitation of an existing identity authentication method does not exist.

The invention relates to the technical field of advertising media propaganda equipment, and discloses an outdoor advertising media propaganda device convenient to clean. The outdoor advertising mediapropaganda device comprises a base, wherein a rotating rod is movably connected to the exterior of the base, a fixed frame is fixedly connected to the exterior of the rotating rod, a lead screw is movably connected to the interior of the fixed frame, a moving block is movably connected to the exterior of the lead screw, a cleaning plate is fixedly connected to the exterior of the movable block, and a rotating shaft is movably connected to the exterior of the fixed frame and fixedly sleeved with a chain wheel. Through the interaction among a screw rod, a moving block, a rotating shaft, a chainwheel, a chain, a cleaning plate, a scraping plate and a collecting box, a display screen can be cleaned when a large amount of dust is adhered to the display screen by using the outdoor advertising media propaganda device, and meanwhile, the cleaned dirt can further be collected, the situation that the content on the display screen cannot be seen clearly due to too much dust adhering to the display screen is avoided, the display effect of the advertising device is better, and therefore the actual use requirement can be met.

The invention relates to the technical field of pipe fitting supports, in particular to an adjustable sliding support for pipe fittings. The adjustable sliding support comprises support components and an adjustable support for supporting the support components, wherein the support components comprise a first baseplate, as well as a left vertical plate and a right vertical plate which are vertically connected with the first baseplate, and a support plate arranged between the left vertical plate and the right vertical plate, and the upper edge of the support plate is arc-shaped; the adjustable support comprises a support and a second baseplate connected with the support, and slide rails are arranged on the second baseplate. By adopting the structure, the pipe fittings are supported by the support components at first, so that the fixing and supporting strength is high, the stability of the pipe fittings is good and the service performance is improved; then the adjustable support at the bottom of the support components can slide through the slide rails, so that the use is convenient, and the practical application requirement is satisfied.