18results about How to "Reduce air gap" patented technology

The invention discloses a far ultraviolet micro-LED photocatalyst monolithic integrated chip and a preparation method of the far ultraviolet micro-LED photocatalyst monolithic integrated chip. According to the chip, an AlGaN-based micro-LED array with the emission peak position of 220-230 nm is adopted as a far ultraviolet light source, a conformal composite layer structure with optical shaping and photocatalysis dual functions is integrated on the light emitting face of the AlGaN-based micro-LED array in a monolithic mode, and a composite layer is composed of a high-transmittance framework layer and a porous catalytic skin layer; the catalytic skin layer conformally deposits a porous membrane with the thickness of 50-300 nm on the surface of the lens, the aperture is 10-200 nm, the porosity is 20-60%, and degradation of organic pollutants and inactivation of microorganisms in air are achieved under the wave band of 220-230 nm. And a transition layer with the thickness of 50-200 nm is arranged between the light emitting surface of the chip and the composite layer, so that the adhesive force is improved and the thermal stress is relieved. The device is compact in structure, low in energy consumption, free of mercury, environmentally friendly and suitable for the fields of far ultraviolet disinfection, air purification, healthy illumination in closed space and the like.

The utility model relates to temperature controller technical field, and disclose a kind of quick heat radiation structure of temperature controller, including connecting plate, the top of the connecting plate is fixedly connected with four groups of positioning sheet, the inside of the positioning sheet is sleeved with support pole, the top of the support pole is slidably connected with two groups of pusher assembly, the one side of the pusher assembly is fixedly connected with support spring, the bottom of the connecting plate is fixedly connected with several groups of fin one, the inside of the fin one is sleeved with cooling pipe, one end of the cooling pipe is connected with cooling assembly, the pusher assembly includes the top sliding seat of sliding connection in support pole, the top of the sliding seat is rotatably connected with transmission rod, the top of the transmission rod is rotatably connected with support bolt.The quick heat radiation structure of temperature controller, through the setting of cooling assembly, reach the effect of quick heat dissipation, prevent temperature controller internal overheating to cause part damage, improve the heat dissipation effect of device.

The application discloses a high-torque-density double-winding permanent magnet motor based on a magnetic gear effect and relates to the technical field of motors.The application comprises a stator core, a fundamental wave winding, a harmonic wave winding, a modulation unit and a permanent magnet rotor; a half-closed slot is formed in the inner surface of the stator core, two sets of windings which are not coupled and have different pole pairs are placed in the slot, one set of the windings is the fundamental wave winding, and the other set of the windings is the harmonic wave winding; the modulation unit is composed of non-magnetic blocks and magnetic blocks which are alternately arranged along a circumference, is connected with the inner surface of the stator core, and only an air gap exists between the modulation unit and the permanent magnet rotor; the permanent magnet rotor is a magnetic gathering type permanent magnet rotor and comprises a tangential excitation permanent magnet and a magnetic separation slot structure. The two sets of windings can efficiently utilize the harmonic magnetic field and the fundamental wave magnetic field, the independent modulation unit is adopted to realize the optimal modulation ratio of the motor, the single air gap structure is beneficial to improving the working magnetic density of the motor, and the torque density of the motor driving system is effectively increased.

An intraluminal ultrasound device configured to be inserted within an inner wall defining a lumen of a patient can include a housing extending from a proximal section to a distal section along a central axis. The housing can include a transducer configured to capture ultrasound images and a mounting component configured to receive the transducer. The intraluminal ultrasound device can also include a force generation system operable to maintain contact between the inner wall and the transducer, in turn causing a reduction in an air gap between the lumen and the transducer.

This application discloses a dielectric gradient coating for insulating separators, its preparation method, and its application, belonging to the technical field of electrical equipment insulation materials. The method includes the following steps: (1) adding ethylenediamine and perfluorooctyltrimethoxysilane to a solvent to obtain a modified solution, and then adding nano-graphene to the modified solution to obtain fluoroammonia-modified graphene; (2) mixing the first and second dispersions prepared from the fluoroammonia-modified graphene and magnesium-aluminum hydrotalcite respectively to obtain electrostatic spraying liquids with different concentration gradients; (3) sequentially electrostatically spraying the electrostatic spraying liquids with different concentration gradients onto the surface of the separator to form a dielectric gradient coating, wherein the dielectric constant in the dielectric gradient coating increases from the inside to the outside. In this method, the fluoroammonia-modified graphene is uniformly dispersed in epoxy resin and improves the density of the epoxy resin, thereby increasing the bonding force between the coating and the substrate, and thus improving the service life of the insulating separator under high temperature and high humidity conditions.

This invention relates to the field of medical aesthetics and skin repair devices. The invention discloses a needle tip temperature control and cooling device and a radiofrequency microneedle device equipped with the same. The needle tip temperature control and cooling device includes a housing with a receiving cavity and an opening facing the treatment area. A negative pressure chamber is located at the opening facing the receiving cavity, and the negative pressure chamber also has a negative pressure through-hole for communication with a negative pressure output device. It also includes an adaptive cold conduction component disposed at the opening. The adaptive cold conduction component includes independent first and second cold conduction components. The second cold conduction components are U-shaped, and several second cold conduction components are arranged in a three-sided arrangement away from the first cold conduction component. When the first and second cold conduction components have an axial displacement difference, a fitting gap is formed. This fitting gap is configured to form an airflow channel under negative pressure, using airflow shear force to remove condensate from the surfaces of the first and second cold conduction components.

A motor and an assembly structure thereof, a motor assembly mechanism comprises a stator (1), a first end cap (2), a second end cap (3) and a fastener (4) for fastening the stator (1), the first end cap (2) and the second end cap (3), wherein the stator (1) comprises a middle iron core (13), a first side iron core (11) and a second side iron core (12), the inner edge of the first end cap (2) is provided with a first inner arc surface (21), the outer edge of the first side iron core (11) is provided with a first outer arc surface (111) in interference fit with the first inner arc surface (21), the inner edge of the second end cap (3) is provided with a second inner arc surface (31), and the outer edge of the second side iron core (12) is provided with a second outer arc surface (121) in clearance fit with the second inner arc surface (31). Through the positioning cooperation of the first side iron core (11) and the first end cap (2) and the positioning cooperation of the second side iron core (12) and the second end cap (3), the motor and the assembly structure thereof provided by the present application can effectively improve the coaxiality of the stator and the end caps, and thus improve the coaxiality of the stator and a rotor, and reduce the air gap between the rotor and the stator.

According to the cable seamless welding method provided by the invention, the two cables can be seamlessly connected in a mode of being integrally welded with the original cable body, the current-carrying performance and the strength of a connecting joint which is manufactured by the cable seamless welding method and is used for connecting the two cables are consistent with those of the cable body, and the cable seamless welding method is high in reliability. And the cable seamless welding method reduces the experience dependence on operators, and improves the consistency and reliability of cable connection work.

The utility model discloses a radial gas foil bearing capable of independently adjusting circumferential four-direction air gaps. The radial gas foil bearing structurally comprises a bearing sleeve, an air gap adjusting screw rod, a locking screw, a wedge-shaped push block, a supporting tile, a bump foil and a flat foil. The air gap adjusting screw drives the wedge-shaped push block to move axially, so that the position of the supporting tile is adjusted, the bump foil is pushed to be compressed or released, and accurate adjustment of the air gap is achieved; each air gap adjusting screw can independently control the corresponding push block, independent adjustment of air gaps in four directions is ensured, and high precision and flexibility are provided. According to the bearing structure, independent adjustment is achieved through an air gap adjusting mechanism formed by four sets of air gap adjusting screws, wedge-shaped push blocks, supporting tiles and bump foils, the performance of the bearing is optimized, load changes and air film rigidity are adapted, the stability and efficiency of a rotor system are improved, and the bearing structure adapts to various complex working conditions.

This invention discloses a segmented skeleton-type flexible current transformer, relating to the field of current measurement technology. The invention aims to solve the technical problems of traditional rigid current transformers, such as inconvenient installation, incompatibility with Rogowski coil outputs, low accuracy, and excessive errors at the joints of existing flexible current transformers. The transformer core employs differentiated impregnation treatment; the middle flexible main body section is not impregnated to maintain flexibility, while the rigid connecting sections at both ends are impregnated, cured, and have smooth connecting surfaces. Multiple I-shaped skeletons are fixed at equal intervals on the flexible main body section, with air gaps reserved between adjacent skeletons. Independent secondary windings wound on each skeleton are connected in series to form a single closed loop. Locking docking mechanisms are provided at both ends to form a closed magnetic circuit. An auxiliary compensation winding connected in the same direction is fixed on the rigid connecting section to compensate for measurement errors at the magnetic circuit connection point. This invention allows for uninterrupted winding installation, direct output of standard current signals without auxiliary power, full-circuit measurement accuracy of 0.5%, simple and reliable structure, and is suitable for power distribution upgrades and current measurement in confined spaces.

The invention discloses a flat wire close-wound electromagnetic bearing which comprises an iron core and a flat wire winding, a tooth part is arranged on the iron core, and the flat wire winding is wound on the tooth part of the iron core; the system further comprises an energy supply adaptation module and an energy consumption control sub-module, the energy supply adaptation module is used for being compatible with multi-source input energy and dynamically distributing power, and the energy consumption control sub-module is used for monitoring the states of the rotor and the winding in real time and dynamically adjusting energy consumption output and energy distribution; the flat wire is provided with the micro-channel penetrating through the two ends of the flat wire in the length direction, the micro-channel is filled with the phase-change material, the phase-change material achieves active temperature control by absorbing heat generated in the winding operation process, the local heat dissipation bottleneck of dense winding of the flat wire can be effectively solved, and cooperation of high filling and low heat dissipation loss is achieved.

The application provides a circuit board and a manufacturing method thereof. A medium layer source, i.e., a resin source, is divided into multiple parts, i.e., a top medium layer above a buried device and an intermediate medium layer between core boards. In a pressing process, the top medium layer above the buried device fills a gap between an upper frame (a second core board) and the buried device, and the intermediate medium layer between the core boards quickly fills a gap between a lower frame (a first core board) and the buried device. The vertical distance of resin flow is greatly reduced, the resin flowability is greatly improved, the problem of insufficient filling caused by insufficient resin flowability or mismatched curing speed can be effectively avoided, the problem of insufficient glue filling capacity of a traditional single-frame design when processing a large-thickness component is solved, and the reliability and stability of the buried device are improved.

The invention discloses a waste nonferrous metal component extraction and detection device and method, and relates to the technical field of waste nonferrous metal component extraction.The waste nonferrous metal component extraction and detection device comprises a supporting frame, a smelting furnace is rotationally connected to the inner side of the supporting frame, a movable plate is slidably arranged on the inner side of the supporting frame, and a mixing assembly is arranged on the movable plate; the mixing assembly comprises a rotating ring rotationally connected with the inner side of the movable plate, a first movable ring movably connected with the outer side of the rotating ring, a first rotating rod movably connected with the inner side of the rotating ring, a second movable ring movably connected with the outer side of the first rotating rod, a second trapezoidal plate mounted at the upper part of the second movable ring, and a first trapezoidal plate mounted at the bottom of the first movable ring; the mixing assembly rotating rod drives the second stirring fan blades to vibrate, waste non-ferrous metal can be evenly stacked, air gaps among particles are effectively reduced, air is a poor conductor of heat, heat resistance can be remarkably reduced through reduction of the air gaps, and heat of a smelting furnace can be more efficiently transmitted into metal.

The utility model relates to the technical field of textile production, and discloses a tape winding machine for textile production, which comprises a tape winding machine body, and a cleaning component is arranged on the top surface of the tape winding machine body. According to the tape winding machine for textile production, through the arrangement of the pushing assembly and the tension adjusting assembly, during winding, a winding tape is placed on an adjusting roller, an adjusting hydraulic rod is started, the adjusting hydraulic rod moves to drive the adjusting roller to move, the adjusting roller moves to drive the winding tape to move, and therefore the tension of the winding tape during winding can be adjusted; after adjustment is completed, a pushing hydraulic rod is started, the pushing hydraulic rod drives a fixing block to move, the fixing block moves to drive a rotating roller to move, the rotating roller makes contact with the wound tape, the tape can be wound on a winding cylinder more tightly in the winding process, air gaps in the tape are reduced, and the winding efficiency is improved. Therefore, the structure of the winding tape is more compact and is not easy to loosen.

The invention relates to the technical field of safety belt suspension, in particular to a strong-magnetic self-adaptive safety belt suspension device for a complex component of a transformer substation, which comprises a hanging rod, the hanging rod is provided with a fixed end and a connecting end which are oppositely arranged in the X direction, the connecting end is provided with a hanging point, and the fixed end is provided with a fixing structure used for being magnetically attracted and fixed with equipment to be overhauled. The fixing structure comprises a permanent magnetic chuck and an electromagnet; the strong magnetic self-adaptive safety belt suspension device further comprises a monitoring structure, the monitoring structure comprises a pressure sensor used for monitoring the adsorption force between the fixed end of the hanging rod and the equipment to be overhauled, and the pressure sensor is connected with the electromagnet through a controller. The requirements of high hanging and low use of the safety belt are met through the extending hanging points of the hanging rods; the permanent magnetic chuck is matched with the electromagnet to ensure that the hanging rod is firmly fixed and does not fail in power failure; when the pressure sensor detects that the magnetic adsorption force is attenuated, the controller automatically enhances the magnetic field of the electromagnet, the fixing effect is improved, and the safety risk is reduced.

This utility model provides a water-proof sleeve, a motor, and an electric water pump, relating to the field of electric water pump structures. The water-proof sleeve includes an isolation section and an overlapping section connected to the isolation section, so that the main body of the water-proof sleeve is formed as a single-piece structure. Furthermore, the main body is formed as a metal stamping part. Compared with existing plastic water-proof sleeves, the thermal conductivity of the metal water-proof sleeve is significantly increased, thereby effectively improving the heat dissipation effect. In addition, the stamping part itself has a thinner structural characteristic, and the metal water-proof sleeve also has higher structural strength. Therefore, the wall thickness of the main body (compared to existing plastic water-proof sleeves) is smaller, which reduces the air gap between the stator and rotor, thereby effectively improving the working efficiency of the electric water pump. Furthermore, the isolation section is provided with multiple reinforcing ribs, thereby effectively ensuring the structural strength of the water-proof sleeve.

The utility model relates to the technical field of medical instrument assistive devices, in particular to a connecting and fixing device for stabilizing a treatment head, which comprises a connecting helmet main body, the inner wall of the connecting helmet main body can be completely attached to the head of a patient, and the shape of the connecting helmet main body can be designed according to image data of the head of the patient. The top end of the connecting helmet body is connected with a first structure and a second structure in a replaceable mode, the first structure comprises a connecting cylinder, the second structure comprises a connecting column, the connecting column is fixedly installed at the top end of the connecting helmet body, and a plurality of fixing hooks are arranged on the outer wall of the connecting column. The inner wall of the connecting helmet body can be completely attached to the head of a patient, the shape of the connecting helmet body can be designed according to the shape characteristics of the head of the patient, the connecting helmet body can be conveniently attached to the head of the patient, and the first structure and the second structure can conveniently correspond to the portions, needing to be treated, of the patient; the treatment effect of the ultrasonic treatment head is improved.

This invention proposes a brushless excitation load-reducing vertical synchronous motor with a disc spring floating exciter stator, belonging to the technical field of vertical synchronous motors. It solves problems such as high thrust bearing load, unreliable excitation system, disconnect between excitation and load reduction functions, exciter only having power generation function, and complex active control in existing vertical motors. It includes a thrust bearing assembly, a bearing housing, a thrust head, an exciter rotor, an exciter stator, a flexible assembly, a top cover, and a rectifier disk. The thrust bearing assembly is installed at the bottom of the bearing housing, the main motor shaft is installed in the middle of the bearing housing, the thrust head is installed on the outside of the main motor shaft, the exciter rotor is installed on the outside of the thrust head, the exciter stator is installed above the exciter rotor, the upper end of the exciter stator is connected to the flexible assembly, and the rectifier disk is installed on top of the thrust head. It is mainly used as a drive motor for heavy-load, high-axial-force, and continuous operation conditions such as vertical water pumps, vertical water turbines, and vertical axial-flow pumps.