19results about How to "Good quality" patented technology

The utility model relates to a phase change thermo-acoustic engine experimental device which comprises a thermo-acoustic conversion system and an acoustic-electric conversion system. The thermo-acoustic conversion system comprises a sound production module and a Helmholtz resonant cavity, a ceramic plate stack soaked with water exists in the sound production module, and the stable temperature difference needed for generating the thermo-acoustic effect at the two ends of the ceramic plate stack is reduced. Sound waves generated by the thermoacoustic effect form standing waves in the Helmholtz resonant cavity, and the sound intensity is amplified; the acoustic-electric conversion system comprises piezoelectric ceramics and a triode common-emitter amplification circuit, the piezoelectric ceramics are arranged at the tail end of the resonant cavity and convert acoustic energy into electric energy, and the electric energy is amplified by the triode common-emitter amplification circuit and then drives a nixie tube to display. The experimental device integrates thermodynamics, fluid mechanics, acoustics, material science and electronic technology, has the characteristics of simple structure, low cost, rich physical process and strong exploration, is suitable for experimental teaching, particularly suitable for new engineering teaching requirements, and is beneficial to improving the multidisciplinary cross practice ability of students.

This invention relates to the field of hybrid rice seed production technology, specifically to a method for the factory-scale seedling raising of the male parent for hybrid rice seed production. The method includes: sowing the male parent once using factory-scale seedling raising; then, by controlling the seedling age, transplanting the seedlings in two batches manually to the field or transplanting them mechanically in one batch, replacing the traditional two-stage sowing and staggered transplanting method. This method avoids the impact of low spring temperatures on the growth of the male parent, simplifies the seedling raising process, reduces the sowing and seedling raising process by one step, saves labor and seedling raising costs, and ensures that the flowering periods of both parents coincide. The final seed yield is not significantly different from traditional methods, and it is suitable for large-scale, mechanized hybrid rice seed production.

This invention provides a molded rice seedling tray with a seedling-strengthening agent and acid-adjusting properties, and its preparation method, belonging to the field of rice seedling technology. A method for preparing a molded rice seedling tray with a seedling-strengthening agent and acid-adjusting properties includes the following steps: (1) mixing agricultural and forestry waste with sulfur powder and fermenting to obtain acid-adjusting fermented material; (2) mixing a seedling-strengthening agent, zeolite powder, and acidic river silt to obtain a functional masterbatch; (3) mixing the acid-adjusting fermented material, the functional masterbatch, ammonium sulfate, and sodium carboxymethyl cellulose to obtain a pressed material; (4) pressing the pressed material into shape to obtain a molded rice seedling tray with a seedling-strengthening agent and acid-adjusting properties. This invention successfully solves the four core problems in soilless rice seedling cultivation: difficulty in acid adjustment, difficulty in fertilizer transport, high cost, and difficulty in industrialization, achieving a win-win situation for both ecological and economic benefits, and possessing extremely high industrial application value and promotion prospects.

This invention discloses a system and method for the comprehensive utilization of liquid nitrogen cold energy, including a liquid nitrogen storage tank, a vaporizer, a fan, an insulation cover, a temperature sensor, and an intelligent control unit. The vaporizer has a liquid nitrogen channel with a liquid nitrogen inlet and a nitrogen outlet. The outlet of the liquid nitrogen storage tank is connected to the liquid nitrogen inlet of the vaporizer via a first pipe, which is equipped with a regulating valve. The nitrogen outlet is connected to the grain silo via a second pipe. The insulation cover surrounds the vaporizer. The fan delivers ambient air into the insulation cover, allowing indirect heat exchange between the air and the vaporizer. After cooling, the air is connected to the grain silo via a third pipe. The temperature sensor is installed on the second and / or third pipes. The intelligent control unit is electrically connected to the temperature sensor, the regulating valve, and the fan. Liquid nitrogen is vaporized by the vaporizer, and the air is cooled after heat exchange within the insulation cover. Operating parameters can be automatically adjusted according to grain conditions and climate, achieving energy-saving and intelligent temperature and atmosphere control in the grain silo.

The invention relates to an optical imaging lens. The optical imaging lens comprises a lens barrel, a lens assembly and a spacing assembly, the optical imaging lens satisfies the following relational expression: 0.85 < T67 / (CT6 + CT7) < 1.2; 1.8 < = d6s / f6 < 2.1; wherein T67 is the air interval from the image side surface of the sixth lens to the object side surface of the seventh lens on the optical axis, CT6 is the center thickness of the sixth lens, CT7 is the center thickness of the seventh lens, d6s is the inner diameter of the plane, perpendicular to the optical axis, of the object side surface of a sixth interval element, and f6 is the effective focal length of the sixth lens. According to the optical imaging lens, the sixth spacing element is arranged between the sixth lens and the seventh lens, and the inner diameter of the sixth spacing element is controlled in the longitudinal direction, so that the inner diameter of the sixth spacing element and the effective focal length of the sixth lens meet a specific relation, and the stray light path of light rays on the sixth lens and the seventh lens can be limited; therefore, the problem of stray light reflection between the sixth lens and the seventh lens is solved.

This invention belongs to the field of cushioning packaging technology, and provides a high-performance composite plant fiber foam material, its preparation method, and its application. In the preparation process, thermally expandable microspheres are first added to a cross-linked fiber mixture, and an initial bubble network is formed through high-speed shearing and stirring. After filtration, the microspheres are heated in an oven to trigger expansion, and the resulting supporting force compensates for drying shrinkage. The material obtained by this process has low density, stable cell structure, excellent cushioning performance and flame retardancy, and the raw materials used are biodegradable, making it a green and environmentally friendly cushioning packaging material suitable for packaging applications such as express delivery and electronic products.

This disclosure relates to a terminal device with a camera module featuring image stabilization, comprising: a camera module including a housing; and a hinge assembly connected to the housing of the camera module. The hinge assembly drives the camera module to perform more than four degrees of freedom of movement. Specifically, in a first direction along the short side of the terminal device, the hinge assembly drives the camera module to rotate around the first direction and extend / retract in the first direction; in a second direction along the long side of the terminal device, the hinge assembly drives the camera module to rotate around the second direction and extend / retract in the second direction. The hinge assembly can drive the camera module to perform more than four degrees of freedom of movement, allowing the same camera module to simultaneously capture front and rear shots, saving costs and overall device space. Furthermore, it eliminates the need for a front-facing camera on the display surface of the terminal device, enabling a full-screen design.

This application relates to an air compressor system and control method with waste heat recovery. The air compressor system with waste heat recovery includes: a first dehumidifier, an air compressor, an oil-gas separator, a first heat exchanger, a second dehumidifier, an air receiver, and a second heat exchanger. The second heat exchanger includes a first heat exchange pipeline and a second heat exchange pipeline. The first dehumidifier, air compressor, oil-gas separator, first heat exchanger, second dehumidifier, and air receiver are sequentially connected to form a first flow path. The oil-gas separator, first heat exchange pipeline, and air compressor are sequentially connected to form a second flow path. The outlet end of the first dehumidifier, the second heat exchange pipeline, and the inlet end of the first dehumidifier are sequentially connected to form a third flow path. According to the air compressor system with waste heat recovery of the present invention, the lubricating oil can exchange heat with the dehumidifying solution, the lubricating oil can be cooled, ensuring the high quality of the lubricating oil in the air compressor, and the dehumidifying solution can be converted into a concentrated dehumidifying solution, realizing the regeneration of the concentrated dehumidifying solution.

This invention relates to the field of information display technology, and discloses a conference screen sharing method and related equipment based on frame buffering and incremental updates. The method includes managing and processing the frame buffer resources of a remote host and a local host; using incremental update technology, the remote host and local host identify the changed parts of the screen content after frame buffer resource management and processing, and generate image difference information; and transmitting the image difference information between the remote host and the local host to complete the conference screen sharing based on frame buffering and incremental updates. This invention, by managing and processing the frame buffer resources of the remote host and local host, can effectively integrate and optimize the utilization of screen resources; the use of incremental update technology allows the system to identify and transmit only the changed parts of the screen content, rather than the entire screen image. During the conference screen sharing process, only the changed image areas are captured and transmitted, thereby significantly reducing the amount of data that needs to be transmitted.

The utility model discloses a kind of brake pad wear-resistant material smearing press integrated equipment, more specifically brake pad processing technical field including equipment box, the top of the equipment box is fixedly installed with several telescopic components, the top of the equipment box is fixedly connected with clamping mechanism by several telescopic components, one side of the equipment box is fixedly installed with linear guide rail component, one side of the linear guide rail component is fixedly installed with coating mechanism, the top of the clamping mechanism is fixedly installed with press mechanism. The brake pad wear-resistant material smearing press integrated equipment, the top of clamping plate is displaced by linear guide rail component and drives coating mechanism, raw material inside coating mechanism is coated on the top of brake base plate by processing groove, then starting press mechanism is pressed into shape to the raw material between processing groove and brake base plate, in this process, control box is used to control equipment, and raw material is provided for coating mechanism by the cooperation between feed tank and feed pipe.

The application discloses a modular assembly method for a superconducting feeder system of a fusion device and belongs to the technical field of fusion devices. The method assembles the superconducting feeder system by using a superconducting feeder system assembly and installation integrated platform, and comprises the following steps: cleaning and appearance inspection; posture adjustment and fixation; measurement, position fitting, reverse processing of a core wire and precise butt joint of a cooling pipe of a superconducting joint; construction of a cleaning area, indium pressing and resistance testing, welding and testing of each cooling pipe; insulation winding and testing of the periphery of the cooling pipe; installation of insulation components, support components and cold screen jump pipes, welding and testing of the cold screen jump pipes; installation of a connecting pipe section, welding and testing of a current lead tank; comprehensive cleaning and packaging protection, and transportation to a hoisting preparation area. The application has the advantages of high adaptability, high installation precision and effective control of a clean environment.

The invention discloses a wireless screen projection system with a display picture size vector scaling function, belongs to the field of wireless screen projection displays, and aims to solve the problems of poor compatibility, inconvenience in display adjustment and conflict between screen projection and operation of existing equipment. The system comprises a screen projection host, a wireless communication module, a gravity sensing module, a touch display module, a signal processing module and a central control unit, and all the modules are electrically connected with the central control unit. The wireless communication module supports multi-protocol and Bluetooth auxiliary pairing, and adapts to various external devices; the gravity sensing module collects attitude data for the central control unit to adaptively adjust the display direction; the touch display module comprises a display zooming adjusting key and supports picture zooming; and the central control unit coordination module realizes display adjustment, lossless zooming and screen projection mode switching. The system supports a double-screen projection mode, and synchronous screen projection of equipment or independent operation of the screen projection and the equipment can be realized. Through module cooperation, multi-device compatibility and intelligent screen projection are realized, and the method is suitable for multiple scenes.

The invention prompts that n-heptadecanoic acid MA can be used as a marker, a diagnostic kit and a therapeutic drug for diagnosis of diabetic cardiomyopathy. MA can be extracted from dairy products such as milk and can be used as a nutritional supplement for treating diabetic cardiomyopathy.

The utility model discloses a vacuumizing device for a die inlet of a plastic extruding machine, which comprises a base, two upright posts are symmetrically fixed on the top surface of the base, an extruding machine is fixed on the top surfaces of the two upright posts together, an extruding piece is rotatably connected in the extruding machine, and the tail end of the extruding piece is fixedly connected with an exhaust piece. A hopper is vertically fixed on the top surface of the extruder, a sealing plug is connected in the hopper in a threaded manner, a vacuum part is fixedly connected outside the extruder, and the vacuum part is fixed on the top surface of the base. According to the utility model, the extrusion piece is rotationally connected in the extruder, the exhaust piece is fixedly connected at the tail end of the extrusion piece, and the vacuum piece is connected outside the extruder, so that gas of raw materials in the extruder is stirred and exhausted, and residual gas and bubbles in the raw materials are prevented from influencing the quality of extruded plastics; and therefore, the quality of plastic extruded by the extruder is improved.

The utility model relates to a hair curler which comprises a handle, a heating part arranged at the front end of the handle and a heat conduction clamping piece hinged to the side wall of the front end of the handle. The heat-conducting clamping piece and the heating part are arranged side by side; a first electric heating piece is arranged on the heat conduction clamping piece; when the heat conduction clamping piece is folded, the inner side wall and the outer side wall of the heat conduction clamping piece respectively form two heating positions for heating hair, when a user clamps the hair for heating, the hair can be continuously and evenly heated through two heat sources on the inner side and the outer side of each heating position, and the qualitative effect is better and faster.

The application discloses a telephoto lens, belonging to the technical field of lenses, comprising a first lens group with positive refractive power, a second lens group with positive refractive power, and an aperture between the first lens group and the second lens group, and the second lens group is moved on the optical axis to focus. The above-mentioned front group is essentially composed of three lens components, the first lens component is a positive lens arranged in sequence from the object side along the optical axis, with a convex surface facing the object side, the second lens component is composed of at least one lens, with positive refractive power, and the third lens component is a negative lens with a concave surface facing the image side; and the second lens and the third lens are glued together. The rear group comprises: a fourth lens component, which is a double-concave negative lens arranged in sequence from the object side along the optical axis; and a fifth lens component. The telephoto lens is designed by adopting eleven spherical glass lenses, so that the cost is greatly reduced and miniaturization is realized.

The utility model discloses aluminum foil detection equipment with a deviation rectifying mechanism, which relates to the technical field of aluminum foil detection and comprises an equipment base and an aluminum foil tape, a positioning sleeve is fixedly mounted on the equipment base, and the deviation rectifying mechanism is mounted on the positioning sleeve. The deviation rectifying mechanism comprises a telescopic column slidably mounted in the positioning sleeve and an adjusting lead screw rotatably mounted in the positioning sleeve, the adjusting lead screw is mounted on a lead screw nut in a threaded mode, a rotating base is rotatably mounted at the upper end of the telescopic column, and a detection mechanism is fixedly mounted on the rotating base. The deviation rectifying mechanism further comprises a servo motor fixedly installed on the equipment base, a small gear is fixedly installed at the output tail end of the servo motor, and a large gear is fixedly installed at the lower end of the adjusting lead screw. According to the aluminum foil detection equipment with the deviation rectifying mechanism, the deviation rectifying mechanism can adjust the detection box body, the quality of a shot picture is guaranteed, and the detection mechanism can detect the two faces of an aluminum foil only through one set of CCD cameras.

The invention discloses an optical lens, a camera module and terminal equipment, a first lens has positive refractive power, and an object side surface and an image side surface of the first lens are respectively a convex surface and a concave surface. The second lens element with negative refractive power has a concave object-side surface and a concave image-side surface. The third lens element with positive refractive power has a convex image-side surface. The fourth lens element with positive refractive power has a convex object-side surface. The fifth lens element with negative refractive power has a convex object-side surface and a concave image-side surface, respectively. The sixth lens element with positive refractive power has a convex object-side surface. The seventh lens element with negative refractive power has a concave object-side surface. The optical lens satisfies the following relations: FOV is greater than or equal to 34deg and less than or equal to 42deg, and FNO is greater than or equal to 1.5 and less than or equal to 1.65. According to the optical lens, the camera module and the terminal equipment, the requirements of large aperture and high relative illumination can be met while high resolution is met.

The utility model discloses a purging device and a perovskite line evaporator, the purging device comprises: a first purging assembly, the first purging assembly comprises a first purging pipe, both ends of the first purging pipe are connected with a feeding port, and the first purging pipe is provided with a plurality of first purging holes; the second purging assembly comprises a second purging pipe, the two ends of the second purging pipe are connected with a feeding port of the perovskite line evaporation machine, and a plurality of second purging holes are formed in the second purging pipe; the first purging hole and the second purging hole face away from the feeding cavity, and the absolute value of the included angle between the vertical normal vector of the first purging hole and the second purging hole and the plane of the feeding base plate is (0 degree, 90 degrees). According to the utility model, the substrate which is about to enter the feeding chamber is blown from the two sides of the feeding port, so that the substrate can be effectively and comprehensively cleaned in the feeding process, impurities such as dust and particles on the surface of the substrate are removed, and the cleanliness of evaporation and the product quality are improved.