40results about How to "No leakage" patented technology

The utility model relates to a cooling circulation system for positive tricycle motorcycle, including engine, engine crane, frame, engine outlet pipe, three -way valve, radiator inlet pipe, radiator, radiator outlet pipe, auxiliary water tank and engine inlet pipe, one end of engine outlet pipe communicates with the water outlet of engine, and the other end communicates with the water inlet of three -way valve, one end of radiator inlet pipe communicates with the first water outlet of three -way valve, and the other end communicates with the water inlet of radiator, one end of radiator outlet pipe communicates with the water outlet of radiator, and the other end communicates with the water inlet of auxiliary water tank, one end of engine inlet pipe communicates with the water outlet of auxiliary water tank, and the other end communicates with the water inlet of engine, the utility model can promote engine heat dissipation efficiency, solve engine high temperature problem, can satisfy winter cab heating demand again, strengthens system stability simultaneously, prolongs the life and reduces user maintenance cost.

The utility model discloses a stirring machine which comprises a cup body and a machine base. A connecting rod, a guide rod and an induction piece are arranged in the machine base, and the machine base comprises a cup base. The cup base comprises an outer ring part and an inner ring part. One end of the cup body is an open end, the other end is a closed end, and the open end is in threaded connection with the outer ring part; at least part of the connecting rod is accommodated in the outer ring part; a sealing piece is further arranged on the end face of the inner ring part. When the cup body is not installed on the machine base, the connecting rod abuts against the side wall of the sealing piece. When the guide rod is located at the non-triggering position, the induction piece is not activated, and the stirrer cannot be started to operate; when the cup body is installed on the machine base, the opening end of the cup body extrudes and pushes the connecting rod to horizontally move outwards to be away from the sealing piece, then the guide rod is driven to move, the guide rod moves to the triggering position from the non-triggering position, at the moment, the induction piece is activated, and the stirring machine can be started to operate. Whether the cup body is installed in place or not can be effectively recognized, a user is prevented from being scratched by a blade rotating at a high speed, and safety is higher.

This utility model relates to the field of electronic scales, and in particular to an electronic scale for accurately weighing Western medicine granules. It includes an electronic scale body, a rubber pad on the top of the body, a material tray fixedly mounted on the top of the rubber pad, a discharge pipe fixedly mounted on the bottom of the material tray, a sealing cap threaded onto the external thread of the discharge pipe, and a collecting ring for limiting the movement of the granules fixedly mounted on the inner bottom of the sealing cap. Through the designed granule collecting component, utilizing the inclined and smooth inner wall of the material tray, the spilled Western medicine granules are collected and rolled to the central discharge port. Furthermore, the collecting ring on the inclined inner surface of the top surface effectively limits the collection of the granules. During collection, the collecting ring can be removed simply by disassembling the sealing cap. The small collecting ring provides greater stability during tilting, preventing spillage and ensuring stable collection of Western medicine granules, thus avoiding waste.

The utility model belongs to the field of spectral detection discloses a kind of liquid input infrared spectrum gas cell for methanol detection in liquor, including pipe body, heating layer body and injection assembly, pipe body includes pipe body and the two infrared transmission glass sheet of pipe body both ends shielding, and pipe body's peripheral surface has sample injection port, heating layer body is fully pasted and set in the outer peripheral surface of pipe body, heating wire is embedded in heating layer body, and heating wire is connected with the power supply device outside, injection assembly includes injection septum and sample injection needle, injection septum is set in sample injection port, so that injection septum can be detachably closed pipe body relative to outside;Sample injection needle has sample containing part and sample injection needle part, sample containing part contains predetermined amount of liquor sample, sample injection needle is inserted into injection septum, so that the free end of sample injection needle part enters pipe body.

The application relates to an automatic feeding system for producing medicinal packaging materials, which comprises a bottom plate, a plurality of feeding stations are uniformly arranged on the upper surface of the bottom plate along the length direction of the bottom plate, the feeding station comprises a square groove arranged on the upper surface of the bottom plate, a through feeding hole is vertically arranged in the middle of the groove, and a pressing ring is fixedly arranged at the upper edge of the feeding hole; a feeding device is arranged on the bottom plate and can move along the length direction of the bottom plate under the driving of a driving device, the feeding device comprises a transverse moving plate connected with the driving device, a lifting plate is vertically arranged above the transverse moving plate, a feeding pipeline is vertically fixedly arranged on the lifting plate, a through hole corresponding to the feeding pipeline is arranged on the transverse moving plate, a sealing ring corresponding to the pressing ring is fixedly arranged on the outer periphery of the lower end of the feeding pipeline after the lower end of the feeding pipeline passes through the through hole, a positioning device is arranged to position the relative position between the feeding device and each feeding hole, and two protective covers are arranged between the feeding device and the two ends of the bottom plate.

This invention discloses a fertilizer coating device, belonging to the field of fertilizer coating technology. It includes a fluidizing chamber with a discharge port at the bottom, providing a coating area; a discharge chamber located at the bottom of the fluidizing chamber, with at least a portion of the fluidizing chamber located inside the discharge chamber; and a spraying element rotatably disposed inside the discharge chamber, comprising a conical surface; a first spray groove on the conical surface; and a second spray groove on the radial outer wall of the spraying element. When the conical surface blocks the discharge port, the spraying element sprays gas into the bottom of the fluidizing chamber through the first spray groove and into the side walls of the fluidizing chamber through the second spray groove. This invention utilizes a double-groove spraying element with a circulating airflow path to construct a three-dimensional fluidization field, combined with multi-nozzle atomization spraying at the top, resulting in uniform coating thickness and no missed spraying. The conical surface also functions as a sealing and guiding element. Precise cylinder lifting and positioning, reliable gear transmission, and a combination of rail groove fitting and elastic sealing structure ensure smooth, uninterrupted movement.

The utility model discloses a kind of powder and liquid storage sets: powder is loaded in pipe body, the lower end opening of pipe body is plugged with plug, and the upper end of pipe body and the lower end of rubber head are assembled and connected by dropper cover;Liquid is loaded in bottle body, and outer thread is opened in the side of the opening of bottle body, and internal thread is opened in the inside of bottle cap, and bottle cap can be screwed in the opening of bottle body by thread;Internal thread is opened in the inside of dropper cover, after the bottle cap on bottle body is screwed down, when plug of pipe body is removed and pipe body is inserted into bottle body, dropper cover can also be screwed in the opening of bottle body by thread.The storage set can freeze-dried powder and liquid in sales stage separate storage, when using, it is convenient to mix, not easy to spill.

This invention discloses a portable edge-side large-scale computing device based on a solid-state battery, comprising a casing, a solid-state battery core power supply module, a heterogeneous computing and storage motherboard, an intelligent composite three-dimensional heat dissipation system, and a temperature management model. Through the collaborative optimization design of the solid-state battery core power supply module, the heterogeneous computing and storage motherboard, the intelligent composite three-dimensional heat dissipation system, and the temperature management model, this invention solves the technical challenges of insufficient battery life, heat dissipation bottlenecks, poor power management adaptability, and low system integration in edge-side large-scale model deployment, achieving efficient and stable operation of large-scale mobile models.

The utility model provides a self-heating acupuncture and moxibustion auxiliary needle applicator, which belongs to the technical field of acupuncture and moxibustion, and comprises a base, a shell is fixedly mounted at the top of the base, an arc-shaped supporting plate is arranged at the top of the shell, a hot compress mechanism is arranged on one side of the arc-shaped supporting plate, and a heating mechanism is arranged on the other side of the arc-shaped supporting plate. A heating circulation mechanism is arranged in the shell, and an acupuncture and moxibustion storage box is arranged in the shell; the utility model has the beneficial effects that the rotary sealing ring is arranged, and a fluid loop is formed by the rotary sealing ring, the liquid outlet pipe and related parts, so that the hot compress liquid is ensured to circularly flow in a system according to a preset path, and the problems of leakage and backflow are avoided. Therefore, the hot compress mechanism runs reliably, the hot compress effect can be provided for the human body continuously and stably, the safety and stability of equipment use are improved, a patient can enjoy hot compress assistance at ease in the acupuncture and moxibustion process, muscle relaxing is facilitated, and blood circulation is promoted.

This invention relates to the field of brine purification technology in the salt production industry, and discloses a silicon carbide flat-sheet membrane brine purification system and process for the salt production industry. The invention uses a modular silicon carbide flat-sheet membrane filtration unit as its core, combined with a minimalist pretreatment feeding unit. Through the modular collaborative design of an open-top membrane tank shell at atmospheric pressure, a detachable stackable membrane tower, a negative pressure water production component, an array-type aeration component, and a refined brine backwashing component, it achieves negative pressure suction filtration with the membrane tower completely submerged in the crude brine, directly treating crude brine containing calcium and magnesium precipitates without the need for pre-filtering and circulation equipment. The modular design of each component in this system allows for easy assembly and disassembly, high filtration accuracy, low energy consumption, strong anti-fouling properties, and stable production of calcium and magnesium precipitates. 2+ +Mg 2+ The refined brine with ≤1ppm and SS≤1ppm has significant advantages over traditional ceramic membrane systems in terms of equipment investment, operating costs, membrane life and industrial adaptability. It can be widely used in brine refining in the salt industry and brine refining in chlor-alkali systems.

This utility model relates to the field of ice maker technology, specifically an ice maker utilizing semiconductor refrigeration. An ice maker utilizing semiconductor refrigeration includes an upper cover assembly, a water tray, an inner cover, a cold plate, a radiator, an insulated outer shell, a base, and a bottom cover. Its features include: the bottom of the insulated outer shell is connected to the base; a cold plate is located inside the insulated outer shell; a water tray is located inside the cold plate; the top of the cold plate is connected to the inner cover; and the upper cover assembly is connected above the inner cover. A radiator is located below the cold plate, and a cooling fan is located on one side of the radiator. The base contains a drive circuit board and a DC power supply, which is connected to a power cord. Compared with existing technologies, this ice maker utilizing semiconductor refrigeration optimizes the semiconductor refrigeration module design, improves the heat exchange system, and combines an advanced temperature control scheme to achieve fast ice-making speed, high ice-making quality, ease of use, and low energy consumption.

This invention discloses a water quality monitoring stratified sampling device, comprising a sampling bucket, a support rod at the top of the sampling bucket, an air rod inserted through the middle of the support rod, the air rod penetrating the sampling bucket, a piston plate at the bottom of the air rod, an exhaust channel on one side of the piston plate, and an opening and closing part within the exhaust channel; a locking rod on one side of the support rod, the outer end of the locking rod locking into a lock hole on the top side of the sampling bucket, a rope on the outer side of the locking rod, and a float at the other end of the rope; a main water inlet at the center of the bottom of the sampling bucket, with a valve on the main water inlet; several water outlets on one side of the sampling bucket, with water outlet pipes connected to the water outlets; several rotating parts inside the sampling bucket, dividing the interior of the sampling bucket into several sampling chambers, with an auxiliary drive part at one end of each rotating part, which is installed on the outer wall of the sampling bucket, to achieve independent segmentation of water samples at different depths, effectively avoiding cross-contamination between water samples and improving the accuracy of monitoring data.

The utility model relates to the technical field of fly ash collection, and discloses a fly ash collecting device which comprises an ash conveying scraper and an elevator which are obliquely arranged, a discharging hopper is arranged on one side of the top of the ash conveying scraper, a feeding hopper is arranged on one side, corresponding to the discharging hopper, of the bottom of the elevator, a discharging hopper is arranged on the right side of the top of the elevator, and the discharging hopper is arranged on the right side of the top of the elevator. A hose is flexibly connected between the discharging hopper and the feeding hopper, and a fly ash storage bin used for storing and collecting fly ash is further arranged on the side, correspondingly close to the discharging hopper, of the ash conveying scraper. According to the fly ash collecting device, fly ash can be scraped to the discharging hopper through the ash conveying scraper, the fly ash can fall into the feeding hopper from the discharging hopper along the hose under the action of gravity, then the fly ash entering from the feeding hopper can be lifted to a high position through the lifting machine, and the fly ash can be overturned and poured into the discharging hopper at the highest position; the dust collection device has the advantages of being sealed in the whole process, free of leakage and free of raised dust.

The utility model relates to the field of PCBs, in particular to a PCB short circuit defect testing device. Comprising a bottom plate, supporting rods, bolts, a supporting plate, positioning columns, a cover plate, a mounting plate and the like. The bottom plate is installed on the lower side of a testing area inside the PCB electrical performance testing machine, a plurality of supporting rods are fixed to the bottom plate through bolts, a supporting plate is fixed to the upper sides of the supporting rods on the bottom plate through bolts, a PCB is placed on the supporting plate, testing points are arranged on the PCB, positioning columns are arranged at the four corners of the upper side of the supporting plate, and probes and a plurality of ejector pins are arranged on the upper side of the supporting plate. The probes are connected with a PCB electrical performance testing machine through copper wires, and the probes are in contact with testing points on the PCB. According to the utility model, the resistance and inductance values of the PCB are measured in a four-wire resistance test and inductance test mode, the control threshold values of the resistance and inductance values of good products are screened as standard threshold values, and short circuit defects of different lines in the same network can be accurately intercepted.

The application provides a power switching circuit and an electronic device, and relates to the technical field of circuits.The power switching circuit comprises a first power signal input end, a second power signal input end, a first switch sub-circuit for controlling signals input by the first power signal input end to be output from an output sub-circuit, a second switch sub-circuit for controlling signals input by the second power signal input end to be output from the output sub-circuit, a comparison sub-circuit for controlling the first transistor to be turned on or turned off or for controlling the second transistor to be turned on or turned off, and the output sub-circuit for outputting electrical signals transmitted by the first switch sub-circuit or outputting electrical signals transmitted by the second switch sub-circuit.The power switching circuit provided in the application has a low resistance between the source and the drain of the transistor when the transistor is turned on, and the energy loss in the power switching circuit is low.

The invention discloses a vehicle air conditioner filter adopting a three-dimensional support framework variable structure, relates to the technical field of vehicle air conditioner filters, and aims to solve the problem that a filter layer deviates or even falls off due to a bumping state in a use scene of the vehicle air conditioner filter. Comprising an auxiliary frame body and a main frame which are connected in an inserted mode, and supporting framework structures are installed on the two sides of the inner wall of the auxiliary frame body through lower tooth grooves; the vehicle air conditioner filter is composed of a gear / rack structure, a hinged type supporting framework structure and filter cloth, the adjustable hinged type supporting framework structure drives the filter cloth to achieve adjustment of the air inlet area, and the vehicle air conditioner filter is applied to the self-locking function of the gear / rack structure combined with a rotating screw structure in practice; the filter layer supporting framework structure of the air conditioner filter can be ensured to be stable and anti-falling in a bumpy scene; due to the structural design of the detachable main frame and the detachable auxiliary frame, the filter layer can be replaced without damage after adsorption saturation, so that the use cost is effectively reduced.

The utility model relates to foundry molding / core making / pouring field, concretely is a kind of foundry nozzle basin sealing drainage device and nozzle basin manufacturing device, it is applicable to the sealing of nozzle basin and molten iron drainage in the pouring process of various castings.Nozzle basin sealing drainage device is matched with the structure of the shape size of nozzle eye of nozzle basin, and nozzle eye is formed by the placement of nozzle basin sealing drainage device on nozzle basin mould, the upper surface and the lower surface of nozzle basin sealing drainage device are parallel plane and are provided with drainage hole in center, one side of nozzle basin sealing drainage device is circular arc structure, and other three sides are plane structure.The utility model solves the problems of high cost, poor sealing and many casting defects of existing foundry nozzle basin manufacturing device by the characteristics and flexible structure design of sand core material, and significantly improves casting quality and production efficiency.

The utility model relates to the technical field of injection molding machines, and discloses an anti-blocking mechanism for an injection nozzle of an injection molding machine, which comprises a support frame, a heater is fixedly connected to the right side of the top end of the support frame, a storage barrel is fixedly connected to the top of the heater, and a plurality of guide plates are fixedly connected to the top of the inner side of the storage barrel. The device comprises a storage barrel, a mixing ring is fixedly connected to the middle of the inner side of the storage barrel, a sealing cover is clamped to the top of the storage barrel, the left side of the top of the sealing cover communicates with a feeding port, a heating ring is fixedly connected to the bottom of the feeding port, and an L-shaped frame is fixedly connected to the top of the storage barrel. According to the utility model, during stirring, the mixing ring and the guide plate can change the flowing path and direction of the material, so that the material forms a complex flow field in the stirring process, the stirring effect of the material and the stirring effect of the stirrer are superposed, the overall stirring effect is enhanced, meanwhile, the heating effect ensures that the plastic material reaches a proper temperature, and the blocking risk is reduced.

This invention provides a micro-power driven indexing and clamping chuck, including a chuck housing. A dual-power output assembly is connected inside the chuck housing. The power input end of the dual-power output assembly is connected to a micro-power drive servo motor, and the output end of the dual-power output assembly is connected to a workpiece clamping component and a workpiece rotation component. The workpiece clamping component includes a first clamping transmission component and a second clamping transmission component. Both the first and second clamping transmission components are connected to auxiliary clamping components and workpiece clamping components. A self-controlled clutch component enables precise step-by-step power transmission, following a machining logic of clamping before rotation. This step-by-step transmission logic is clear, ensuring the stability and accuracy of the machining process. It improves power utilization efficiency, ensures machining accuracy, achieves higher indexing accuracy and clamping stability, and is suitable for the installation requirements of small, high-precision CNC machining equipment.

This utility model discloses an industrial furnace with a dust treatment structure, relating to the field of industrial furnaces. It includes a bottom support base, above which a furnace processing box is installed. Inside the processing box is an elastic dust removal mechanism that swings a processing placement box. The elastic dust removal mechanism includes a rotary drive motor, which is fixedly mounted on the upper surface of the bottom support base. When dust cleaning is required, the rotary drive motor is activated, rotating a retractable rod to move the inclined plate left and right. Simultaneously, the processing placement box engages its side contact springs, causing dust to fall and be collected. This design makes cleaning convenient and efficient, enabling rapid dust removal even during high-intensity work.

This invention relates to lithium battery electrolytes, and discloses a cross-linked interpenetrating composite electrolyte for secondary lithium batteries and its preparation method. The composite electrolyte includes a polymer electrolyte and an anhydrous electrolyte. A membrane, which is a flexible inorganic SiO2 nanofiber membrane, is disposed within the secondary lithium battery. The composite electrolyte is located between the electrodes and the membrane of the lithium battery. The polymer electrolyte is polymerized from tetraethylene glycol diacrylate monomer and 2,2,3,3-tetrafluoropropyl methacrylate monomer. The polymer electrolyte is in a three-dimensional network structure, and the anhydrous electrolyte fills within the network of polymer electrolyte, forming a gel-like composite electrolyte. The anhydrous electrolyte is composed of an organic solvent and a lithium salt. By in-situ polymerization of tetraethylene glycol diacrylate monomer and 2,2,3,3-tetrafluoropropyl methacrylate monomer between the membrane and the electrodes of the secondary lithium battery, a network-like polymer electrolyte encapsulating the anhydrous electrolyte is formed, exhibiting excellent cycle performance and rate performance.

The invention discloses a sodium alginate-beta-glucan composite wound repair spray with rapid film forming and long-acting repair functions and a preparation method thereof. According to the preparation method, sodium alginate is subjected to low oxidation degree modification, so that the sodium alginate and hydroxypropyl methylcellulose with viscosity gradient regulated and controlled form a high-ion response composite system, the obtained spray can quickly form a film after being sprayed, and meanwhile, yeast beta-glucan is subjected to phosphorylation modification, so that the water solubility and the targeting property are improved; according to the present invention, the binding force with the macrophage receptor is enhanced, the anti-inflammatory efficiency is improved, and the ultrasonic-microwave synergistic swelling, gradient dropwise adding-dynamic shearing cross-linking and other methods are adopted during the preparation, such that the uniformity, the stability and the safety of the product are improved. The obtained spray has multiple effects of rapid film formation, mild bacteriostasis and long-acting repair, can break through vicious circle of chronic wound repair, and provides an innovative thought for development of wound nursing products.

The utility model relates to a natural gas system safety valve belongs to safety valve technical field, the safety valve includes the valve body, the bottom of valve body is the air inlet section, the side is the exhaust section, both intercommunication, the inside of valve body is provided with the sealing piston at the junction of air inlet section and exhaust section, the bottom of sealing piston seals the air inlet section, the upper cavity of valve body is screw thread connection with the support bolt in the top, the downside of support bolt is connected with the top surface of sealing piston through spring mechanism, the top of upper valve chamber is still screw thread connection with locking nut on the upside of support bolt. The safety valve designed in the utility model passes through setting up two layers of support structure of support bolt and locking nut, guarantees the position stability of adjusted sealing piston support end, will not displace in the long -term use process.

This utility model relates to the technical field of gate valves, and in particular to a pilot-operated flat gate valve, which reduces driving force and damage to the sealing surface, is economical, reliable, and easy to disassemble; it includes a valve body, a valve seat, a main gate, a gate frame, a drive assembly, and a small gate assembly. The valve body has symmetrical valve seats inside, which are welded to the valve body as a whole. The gate frame is located at the center of the valve body, and a guide hole is opened in the middle of the gate frame. Two symmetrical main gates are fixed in the guide hole of the gate frame. A pilot hole is opened in the center of the main gate. The drive assembly is installed at the top of the valve body, and the small gate assembly is installed in the middle of the gate frame.

The utility model relates to the technical field of water pressure detection equipment, and discloses multipurpose pressure test equipment which comprises a pressure test device base, the upper surface of the pressure test device base is fixedly connected with a pressure test table, the upper surface of the pressure test table is fixedly connected with a lower sealing seat, and the top of the lower sealing seat is provided with an upper sealing seat. A check valve is arranged between the upper sealing seat and the lower sealing seat, the top of the pressure test device base is fixedly connected with a lifting platform, the lower surface of the lifting platform is fixedly connected with a liquid booster pump, a lower water inlet pipeline is arranged in the lower sealing seat, and an upper water inlet pipeline is arranged in the upper sealing seat. According to the utility model, through the bidirectional switching design of the upper water inlet pipeline and the lower water inlet pipeline, the problem that a valve plate needs to be manually assisted to reset when a traditional single lower water inlet check valve is detected is avoided, efficient detection of different types of valves is realized, the operation process is simplified, and the safety is remarkably improved.

This application provides a device for measuring the water temperature inside the distribution ring pipe of a high-head giant impulse turbine unit. The device includes a temperature measuring module and a monitoring and control module communicatively connected to the temperature measuring module. The temperature measuring module includes: a mounting base, sealed and fixed to the temperature measuring hole at the end of the distribution ring pipe; a pressure-bearing protection pipe, one end of which passes through the mounting base and extends into the distribution ring pipe, and is sealed to the mounting base, while the other end is located outside the distribution ring pipe and connected to a tee pipe; a temperature probe, inserted inside the pressure-bearing protection pipe, which is filled with a heat-conducting medium, and the signal line of the temperature probe is led out through the tee pipe and connected to the monitoring and control terminal. The monitoring and control terminal is configured to: acquire the water temperature data collected by the temperature probe inside the distribution ring pipe, and dynamically calculate and adjust the pressure head of the distribution ring pipe based on the water temperature data. This application decouples the pressure-bearing function and the temperature measuring function of the temperature measuring device, enabling accurate measurement of the water temperature.

This invention discloses an anti-corrosion coating with a porous material-supported phase change core and its preparation method, belonging to the field of coating preparation technology. It consists of core functional components, film-forming components, and auxiliary components. The core functional components include porous boron nitride, acid-modified attapulgite, paraffin-decanoic acid eutectic phase change material, and sodium molybdate-benzotriazole composite corrosion inhibitor. The film-forming components include epoxy-organosilicon hybrid resin, polyamide 650, KH550 silane coupling agent, and anhydrous ethanol. The auxiliary components include ammonium polyphosphate-pentaerythritol composite intumescent flame retardant, polydimethylsiloxane, and xylene-n-butanol mixed solvent. This invention's porous material-supported phase change core anti-corrosion coating differs from traditional single-function coatings, achieving integrated corrosion protection, self-healing, and fire resistance, reducing the cost of multi-layer coatings. The multi-level porous carrier has a high loading rate and strong stability. The phase change core material exhibits no leakage or migration, cures at room temperature, is easy to apply, and is compatible with existing coating processes.

The invention relates to the technical field of paste, and particularly provides dielectric paste and a preparation method and application thereof.The dielectric paste is composed of, by mass, 65-80 wt% of glass ceramic powder and 20-35 wt% of organic carriers, and the glass ceramic powder is composed of, by mass, 25-45 wt% of SiO2, 10-20 wt% of BaO, 10-30 wt% of Al2O3, 0-20 wt% of SrO, 0-10 wt% of MgO, 5-10 wt% of ZnO, 1-3 wt% of coloring metal oxide and 4-9 wt% of rare earth oxide. The expansion coefficient of the dielectric paste is similar to that of an aluminum oxide substrate, the dielectric paste has good matching performance, the dielectric paste is compact and flat after being sintered into a film, good insulativity can still be kept at the high temperature of 500 DEG C, breakdown voltage is high, leakage current is small, and safe and stable use of low-expansion substrate thick-film circuits such as aluminum oxide and the like in severe environments can be met.

This invention discloses a vibration-type respiratory sputum clearance device, relating to the field of medical device technology. It includes a vest body. Multiple independent liquid-coupled vibration units are arranged on the inner side of the vest, corresponding to the upper and lower lobes of both lungs and the projected lung region on the back. Each liquid-coupled vibration unit includes a sealed liquid-sealed bag, and a vibration unit is disposed on the outer side of each sealed liquid-sealed bag. The sealed liquid-sealed bag is integrally embedded and fixed in a flexible interlayer on the inner side of the vest. The interior of the sealed liquid-sealed bag is filled with a vibration-transmitting liquid. The vibration-transmitting liquid filled in the sealed liquid-sealed bag of this invention, relying on its incompressible and highly fluid physical properties, can efficiently transmit and convert the high-frequency micro-vibrations generated by the double-layer piezoelectric sheet, forming a dual mechanical action of shallow loosening and deep oscillation, perfectly adapting to the sputum clearance needs of the soft tissues of the chest and back and the deep airways of the thoracic cavity.

The invention relates to an anti-acupuncture lithium ion battery and a preparation method thereof, and belongs to the technical field of lithium ion batteries, through multi-system collaborative optimization design, an anode is compounded by LMFP and NCM according to a ratio of 6: 4, a cathode is graded by primary and secondary artificial graphite according to a ratio of 7: 3, an electrolyte is matched with a composite lithium salt and a composite additive in a specific proportion solvent, and key process parameters and an N / P ratio of a pole piece are optimized; according to the scheme, the battery has 100% needling passing rate, high energy density, excellent cycle life, good high-temperature stability and high process compatibility, and can be adapted to large-scale mass production of an existing production line.