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240results about How to "Avoid direct contact" patented technology

Core-shell structure nanometer silicon-Mxene composite cathode material and preparation method thereof

The invention discloses a core-shell structure nanometer silicon-Mxene composite cathode material and a preparation method thereof. During preparation, the core-shell structure nanometer silicon-Mxenecomposite cathode material comprises the following steps: (1) using a ceramic phase precursor MAX as a raw material, etching the ceramic phase precursor MAX by using HCl+LiF and using deionized waterto wash the ceramic phase precursor MAX to obtain an MXene material; (2) adding the MXene material to a nanometer silicon suspension liquid; carrying out high energy ball milling and dispersing on the MXene material so as to obtain a nanometer silicon-Mxene composite turbid liquid; and drying the nanometer silicon-Mxene composite turbid liquid to obtain a nanometer silicon-Mxene composite powder;and (3) coating the nanometer silicon-Mxene composite powder by using asphalt, and carbonizing the nanometer silicon-Mxene composite powder to prepare the core-shell structure nanometer silicon-Mxenecomposite cathode material. The core-shell structure nanometer silicon-Mxene composite cathode material disclosed by the invention has the advantages that the nanometer silicon and the Mxene with a two-dimensional layer structure are combined by using a high energy ball milling method, and a core-shell structure of a porous network is designed; and therefore, volume expansion in the nanometer silicon particle charging and discharging process can be effectively buffered, direct contact between electrolyte and a silicon interface is stopped, the electrical conductivity of an active substance isimproved, so that the specific capacity and cycling stability of a lithium ion battery are improved in a coordinated manner.
Owner:FUJIAN XFH NEW ENERGY MATERIALS CO LTD

Phosphoric acid type feed acidifying agent and preparation method thereof

The invention discloses phosphoric acid type feed acidifying agent and a preparation method thereof. The preparation method of the phosphoric acid type feed acidifying agent comprises the following steps of: efficiently adsorbing phosphoric acid in a refined carrier; and encapsulating by using coating material stearic acid and/or hydrogenated oil to prepare the phosphoric acid type acidifying agent. The phosphoric acid type acidifying agent is added to livestock feed for isolating phosphoric acid from external environment, so that phosphoric acid is effectively prevented from directly contacting with alkaline substances in the feed in vitro, and other alkaline nutritional ingredients in the feed are prevented from being damaged, and therefore, the using efficiency of the acidifying agent and the feed is improved. The phosphoric acid type feed acidifying agent is convenient to store, high in stability in a using process and capable of efficiently bringing the effect of the acidifying agent into play, so that the most comfortable digestive tract environment is provided for animals, diarrhea is reduced, digestion is promoted, animal growth performance and feed utilization rate are improved, and therefore, the phosphoric acid type feed acidifying agent is suitable for large-scale production.
Owner:GUANGZHOU WISDOM BIO TECH

Laser-induced breakdown spectroscopy-based hand-held solid waste heavy metal detection probe

The invention discloses a laser-induced breakdown spectroscopy-based hand-held solid waste heavy metal detection probe. The laser-induced breakdown spectroscopy-based hand-held solid waste heavy metal detection probe comprises a housing. A right end of the housing is provided with a laser emission head. A convergent lens and an off-axis parabolic mirror are orderly arranged in a left light path of the laser emission head. The housing at the left side of the convergent lens is provided with a gap. A sample needing to be detected is arranged rightly at the left side of the gap. A plane mirror and a dialyte lens assembly are orderly arranged under the off-axis parabolic mirror. The off-axis parabolic mirror and the plane mirror are coated with broadband dielectric films. The housing under the dialyte lens assembly is provided with an optical fiber end. A doublet and ground glass are orderly arranged at the right side of the plane mirror. The laser-induced breakdown spectroscopy-based hand-held solid waste heavy metal detection probe can detect a detection point which is more than 400mm away from the probe, can avoid direct contact with the solid waste, can protect system and operator safety, has a high integrated level, a small volume and light weight, is in a shape of a pistol, is convenient for operation and carrying, has a low cost and can be realized easily.
Owner:ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI

Rail traffic level crossing pavement laying strengthening structure and laying method

PendingCN107419638AAvoid direct contactPrevent pavement from crackingTemporary pavingsRail fastenersSteel platesFastener
The invention discloses a rail traffic level crossing pavement laying strengthening structure and a laying method, wherein by mounting prefabricated limiting blocks on the two sides of a steel rail respectively, fasteners are housed in accommodating grooves on concrete prefabricated blocks of the limiting blocks respectively; the limiting blocks are relatively fixed with the steel rail through filled concrete in the accommodating grooves respectively, so that the fasteners can be effectively avoided from being directly contacted to a pavement concrete layer of a municipal pavement, and the problem that steel rail components are extruded and vibrated for a long time to cause cracking of the pavement is solved; and meanwhile, due to the existence of a steel plate structure, the problem that the pavement structure at steel rail fastener parts are weaker is effectively solved. The pavement laying strengthening structure is particularly suitable for a level crossing for both tramcars and social vehicles to crossly pass, effectively ensures the beautiful degree and the service life of the municipal pavement, also guarantees stable running of the tramcars at the same time and is convenient to overhaul and change the steel rail and the fasteners.
Owner:苏州西诺尔轨道技术有限公司

Functional enterostomy cannula

InactiveCN105708608AGood tissue compatibilityAvoid direct contactBalloon catheterColostomyEngineeringEnterostomy
The invention belongs to the field of medical apparatus and instruments, and relates to a functional enterostomy cannula. The functional enterostomy cannula is composed of a drainage tube and an inflation tube, wherein the drainage tube and the inflation tube form a double-cavity structure with the partially shared tube; the inflation tube is composed of a main inflation tube body, an inflation tube branch tube body a and an inflation tube branch tube body b; an inner air bag a is arranged on the outer wall of the end part of the double-cavity structure, an inner air bag b is arranged on the outer wall of the end part of the inflation tube branch tube body b, and an outer air bag is arranged on the outer end opening of the main inflation tube body. A use result shows that the functional enterostomy cannula is simple in manufacturing technology, strong in practicability, and low in daily maintenance cost, the second-time operation needed by the conventional stomy resetting is effectively avoided, thus the pain of the patients is alleviated, the medical cost is reduced, meanwhile, the skin irritation beside the stoma is reduced, the living quality of the patients is improved, and the functional enterostomy cannula is suitable for the intestine protective stomy caused by various causes of disease.
Owner:AFFILIATED HUSN HOSPITAL OF FUDAN UNIV

Spacecraft high-temperature thermal insulation screen installation device and method

The invention provides a spacecraft high-temperature thermal insulation screen installation device and method. The device comprises a supporting device and a lifting device. The supporting device is detachably connected with the lifting device. The supporting device comprises an upper supporting ring, reinforcing rods, a lower supporting ring and supporting legs. The upper supporting ring is connected with the lower supporting ring through the reinforcing rods. The supporting legs are connected with the reinforcing rods and/or the lower supporting ring. The upper supporting ring and the lower supporting ring are used for instlling a high-temperature thermal insulation screen. The lifting device comprises a body frame and an adjustable supporting structure. The adjustable supporting structure is arranged at the upper end of the body frame and is used for the supporting device. When the high-temperature thermal insulation screen is assembled, direct contact with an easily-abraded thermal control coating face is avoided, the operation difficulty and risk are lowered, and good effects are achieved. The spacecraft high-temperature thermal insulation screen installation device and method are simple in structure and convenient to operate, and rapid installation of the high-temperature thermal insulation screen can be achieved.
Owner:SHANGHAI INST OF SATELLITE EQUIP

Power distribution cabinet convenient to maintain

The invention discloses a power distribution cabinet convenient to maintain. The power distribution cabinet comprises a cabinet top cover. A power distribution cabinet body is welded at the bottom ofthe cabinet top cover, a clamping plate is clamped on a side of the power distribution cabinet body, a power distribution cabinet door is arranged on the side, which is far away from the clamping plate, of the power distribution cabinet body, cabinet clamp rods are embedded in an end of the clamping plate, cabinet clamp rod grooves are formed in the clamping plate and correspond to the cabinet clamp rods, and a cabinet door handle is welded on the side, which is far away from the power distribution cabinet body, of the power distribution cabinet door. The power distribution cabinet has the advantages that the power distribution cabinet body can be fixed to a wall surface by the aid of the clamping plate and is fixedly connected with the clamping plate by the cabinet clamp rods and cabinetfixing bolts, and accordingly the power distribution cabinet can be quickly mounted, detached and maintained, can be prevented from being in direct contact with a wall and can be protected against moisture; a heat dissipation window closing plate is clamped on the outer side of a heat dissipation window of the power distribution cabinet and is fixedly connected with the power distribution cabinetbody by clamp grooves and bolts, and accordingly heat dissipation and heat preservation of the power distribution cabinet body can be effectively controlled.
Owner:JIANGSU HUALIAN ELECTRIC POWER EQUIP

Transferring disinfecting device for pollutants in P3-grade biosafety cabinet

The invention discloses a transferring disinfecting device for pollutants in a P3-grade biosafety cabinet. A discharge opening is formed in one side of the biosafety cabinet; an isolating door capable of being opened inwards is arranged at the discharge opening; the disinfecting device comprises a negative pressure exhaust cabinet with a sealed inner cavity, a high pressure disinfecting barrel arranged in the negative pressure exhaust cabinet, and a delivery barrel accommodated in the high pressure disinfecting barrel; the delivery barrel comprises a hollow barrel body, a delivery pipe fixedly connected to the opening part of the hollow barrel body and made of soft material, and an electromagnetic door which is fixedly arranged at the opening part of the delivery pipe and is capable of being opened or closed; a delivery opening for the delivery pipe to pass out is formed in one side of the negative pressure exhaust cabinet; a delivery door capable of being opened inwards is arranged at the delivery opening; the electromagnetic door can be sucked on the outer side of the biosafety cabinet in an electromagnetic manner and is positioned on the circumferential outer side of the discharge opening. The transferring disinfecting device can completely isolate the inner environment from the outer environment, avoids the direct contact between people and pollutants, reduces the labor intensity of operators, and eliminates secondary pollution.
Owner:SUZHOU UNIV

Clinical hemostasis rescue device for cardiology department

InactiveCN109620336AAvoid direct contactReduced likelihood of wearSurgeryNursing bedsHospital bedMedical staff
The invention belongs to the technical field of medical apparatuses, and particularly discloses a clinical hemostasis rescue device for the cardiology department. The clinical hemostasis rescue devicecomprises a first clamping plate of an L-shaped structure. A second clamping plate is installed on the upper surface of the first clamping plate. A second bolt is rotationally connected with the upper surface of the second clamping plate. The second bolt penetrates through the second clamping plate and extends to the outside. The rear side, close to the second bolt, of the second clamping plate is fixedly provided with a sleeve. The inner side wall of the sleeve is slidingly connected with a stand column. If the distance between the first clamping plate and the second clamping plate is largerthan the width of a hospital bed or a tabletop, the first clamping plate downwards slides, and the width of the second clamping plate is increased through a welding plate; when the widths of the first clamping plate, the second clamping plate and the welding plate are larger than the width of the hospital bed or the tabletop, medical staff make the first bolt penetrate through the first clampingplate and make contact with the welding plate, the welding plate and the first clamping plate are fixed, and the device can be conveniently fixed by the medical staff according to different fixing occasions.
Owner:李玉耕

Preparation method of titanium and aluminium dissimilar metal thick plate overlapping structure

The invention provides a preparation method of a titanium and aluminium dissimilar metal thick plate overlapping structure. The preparation method comprises the steps of firstly, connecting a titanium alloy substrate with a thin aluminium alloy cover plate through adopting explosive welding to obtain a composite board, wherein the thin aluminium alloy cover plate is 1.5 to 3 mm in thickness; and then, connecting the obtained composite board with a thick aluminium alloy plate through adopting friction stir welding to obtain the titanium and aluminium dissimilar metal thick plate overlapping structure, wherein the thick aluminium alloy plate is connected with the thin aluminium alloy cover plate layer in the composite board. According to the preparation method provided by the invention, through a step-by-step connecting method, the problem that the cover plate cracks and is difficult to weld due to the fact that much explosive is utilized during direct explosive welding of titanium and aluminium thick plates is avoided, besides, the problem that a stirring needle is abraded due to the fact that the stirring needle is in direct contact with the titanium alloy substrate during direct friction stir welding of the titanium and aluminium thick plates is avoided, respective advantages of explosive welding and friction stir welding are fully utilized, and a titanium alloy and aluminium alloy dissimilar metal thick plate structure is successfully prepared. The invention further provides the titanium and aluminium dissimilar metal overlapping structure prepared through the technical scheme.
Owner:NANCHANG HANGKONG UNIVERSITY
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