18results about How to "Eliminate destruction" patented technology

The invention belongs to the technical field of hydrocyclones, and discloses a two-stage series integrated nested classification hydrocyclone which comprises a first-stage cylinder, the top end of the first-stage cylinder is connected with a top cover, and the top cover of the first-stage cylinder is connected with an overflow pipe; the bottom end of the first-stage cylinder is connected with an inverted outer circular truncated cone cylinder, an upright inner circular truncated cone cylinder is arranged in the outer circular truncated cone cylinder in a sleeved mode, and the bottom end of the outer circular truncated cone cylinder and the bottom end of the inner circular truncated cone cylinder are connected in a sealed mode through an annular groove. A second-stage cylinder is arranged in the first-stage cylinder in a sleeving manner, one end of the second-stage cylinder is connected with the top cover, the other end of the second-stage cylinder is connected with a second-stage circular truncated cone cylinder, the second-stage circular truncated cone cylinder is arranged in the inner circular truncated cone cylinder in a penetrating manner, and the second-stage cylinder is connected with the inner circular truncated cone cylinder; a spiral guide plate is connected in the second-stage cylinder, and a plurality of spiral inlets are formed in the side wall of the second-stage cylinder; the invention solves the problems that the underflow is fine during the grading operation of the cyclone, the grading precision of the single cyclone is insufficient, and the energy loss of the intermediate pipeline of the series cyclone is too much.

The invention discloses a polyethylene glycol complexing agent as well as a preparation method and application thereof and belongs to the technical field of medicines. The polyethylene glycol complexing agent comprises the following components in percentage by mass: 1-2% of mesenchymal stem cell source exosome modified by miRNA-138-5p, 1-2% of mesenchymal stem cell source exosome modified by miRNA-21, 1-2% of mesenchymal stem cell source exosome modified by lncGm36569, 1-2% of mesenchymal stem cell source exosome modified by mRNA of SNARE family protein, 1-2% of mesenchymal stem cell source exosome modified by mRNA of SNARE family protein and the balance of water. 1-2% of mesenchymal stem cell source exosome modified by mRNA (messenger Ribonucleic Acid) of syntachilin, and the balance of polyethylene glycol. The polyethylene glycol complexing agent disclosed by the invention can reconstruct spinal cord continuity and improve a spinal cord injury microenvironment, so that a neurological function is recovered.

The present application relates to the technical field of landfill environment governance, and discloses a method for repairing leakage and reinforcing structure of a mortar stone dam of a landfill. The present application is aimed at the problem that sewage leakage and structural safety hazards are prone to occur in the steep mortar stone dam structure of the landfill, and solves the leakage risk by pointing and adding an anti-seepage structure layer. In view of the technical problem that it is difficult to anchor the anti-seepage structure layer on the steep mortar stone dam structure of the landfill, the anti-seepage panel is used to fix the anti-seepage structure layer and reinforce the mortar stone dam structure. In view of the problem that the anti-seepage panel and the mortar stone dam structure are difficult to be effectively connected and are prone to overturning risk, a steel pipe pile or an anchor rod or a concrete support is used for fixation. Through the combination of the three forms, the anti-seepage effect meets the anti-seepage requirements of the environmental protection industry, which not only solves the problem of leakage risk of leachate in the steep mortar stone dam structure of the landfill, but also effectively reinforces the dam body structure of the mortar stone dam and eliminates the structural safety hazards.

Provided is a laser ultrasonic visualization detection device for composite material cylinder structures, which is composed of a mechanical motion mechanism and a laser ultrasonic visualization detection platform. The mechanical motion mechanism includes a flat cart (1), a C-shaped ring bracket (2), and a stepping motor (5). The laser ultrasonic visualization detection platform includes an electrical cabinet (3), a motion control card (4), a laser scanning unit (6), a signal processing unit (7), an ultrasonic signal sensor (8), a computer (9), and a display (10). The composite material cylinder structure (11) to be detected is placed at a roughly central position of the C-shaped ring bracket (2), with the cylinder wall facing the C-shaped ring bracket (2) for easy detection. The detection does not require a liquid coupling agent, thereby eliminating the influence on the ultrasonic signal caused by the use of a liquid coupling medium in traditional ultrasonic detection, the pollution and damage to the structure surface and the environment, and the inconvenience in operation. Different laser scanning speeds can be used for cylinder structures of different sizes, thereby ensuring detection efficiency and greatly shortening detection time.

The present invention relates to the technical field of construction measures for existing buildings, and discloses a safe reconstruction method for eccentric and slender old buildings without demolishing load-bearing components. In the present invention, components that cause eccentricity in old buildings are classified, and the ground-mounted eccentric components that can be removed without destroying the load-bearing components of the old building are replaced with self-sustaining imitation eccentric components with the same appearance but without causing eccentricity after removal; the off-ground eccentric components that cannot be removed without destroying the load-bearing components of the old building are treated by building a new correction core tube at a central symmetrical position, and a supplementary core tube is set to eliminate the damage caused by the correction core tube to the building's appearance. Thereby, the correction of the building is completed under the premise of safety and without significantly changing the appearance of the building. At the same time, since the correction core tube and the supplementary core tube expand the area of ​​the old building and significantly improve the horizontal bearing capacity of the old building, only a small amount of seismic shear walls need to be added to ensure that the safety of the building meets the current standards.

The present invention discloses an integrated cleaning and icebreaking protection robot for floating marine photovoltaic structures, including a chassis, a walking device, a first box, a steering mechanism, a driving device, an icebreaking mechanism, a cleaning mechanism and an electronic control unit. The first box is arranged above the chassis, and the walking device includes two front wheels and two rear wheels. A second box is arranged on the front side of the first box, and the driving device is installed in the second box by mounting. The icebreaking mechanism or the cleaning mechanism can be installed at the execution end of the driving device respectively. The execution end of the driving device drives the icebreaking mechanism to reciprocate up and down, or adjusts the height of the cleaning mechanism and cleans the surface of the solar panel. The second box is movably connected to the first box through a lifting and adjusting mechanism. The present invention can realize walking on the ice surface or photovoltaic panel, breaking ice on the periphery of the marine photovoltaic structure, with high icebreaking efficiency and reduced costs. At the same time, it replaces manual cleaning of the surface of the solar panel, reduces equipment investment, has high cleaning efficiency and better safety.

The present invention provides a detachable portable parafoil powered propulsion device and a method for using the same. The detachable portable parafoil powered propulsion device comprises two symmetrical propulsion units, wherein the propulsion units comprise a bottom guide plate, a top cover plate, a jet thruster, a motor, a propeller and a locking structure. The present invention solves the control response lag problem of a traditional powered parafoil and the problem that a cloth umbrella-shaped structure may be folded in a crosswind or a strong wind and cannot maintain a wing shape.

The invention discloses a flue gas denitration heating process for an anode furnace, and belongs to the field of flue gas denitration. A flue gas cooling device, a high-temperature bag-type dust collector, a dust collection fan, a desulfurization system, a 1 # gas-gas heat exchanger, a 2 # gas-gas heat exchanger, a denitration reactor and a relay fan are arranged in the process. The heat carried by the anode furnace flue gas and the heat carried by the denitrated tail gas are fully utilized, the heat is transferred to the desulfurized flue gas through the 1 # gas-gas heat exchanger and the 2 # gas-gas heat exchanger for heating, and the flue gas heating energy consumption in the low-temperature SCR denitration process of the anode furnace flue gas is reduced to a great extent. Compared with conventional anode furnace flue gas low-temperature SCR denitration flue gas temperature rising, the flue gas temperature rising energy consumption can be reduced by about 90% or above.

The invention relates to the technical field of biology, in particular to a method for extracting exosomes of dairy products. The invention provides a method for extracting an exosome of a cow milk product, which comprises the following steps: carrying out first centrifugation on the cow milk product to obtain a first supernatant; mixing the first supernate with chymosin and then incubating; performing secondary centrifugation on the cow milk product incubated in the step (2) to obtain a second supernatant; filtering the second supernate to obtain filtrate; centrifuging the filtrate for the third time to obtain a first precipitate; purifying the first precipitate; the rotating speed of the second-time centrifugation is higher than that of the first-time centrifugation, and the rotating speed of the third-time centrifugation is higher than that of the second-time centrifugation; the adding amount of the chymosin is that the final concentration of the chymosin is 2.5 to 12.5 mg / mL. According to the method for extracting the cow milk exosome, the extraction efficiency and the extraction purity are high, the extraction time is shortened, and a high-quality raw material is provided for subsequent deep research in the biomedicine field and development of a drug delivery system.

The utility model discloses a novel non-standard case. The novel non-standard case comprises a case body and components arranged in the case body, a first side wall, facing a user, in the box body comprises at least a first panel and at least a second panel which are spliced, the first panel extends towards the interior of the box body to form a first extension section, and the second panel extends towards the interior of the box body to form a second extension section; wherein the first extending section is provided with a first connecting bolt in a penetrating mode in the thickness direction of the first extending section, the second extending section is provided with a second connecting bolt in the thickness direction of the second extending section, and the first connecting bolt and the second connecting bolt are both located in the box body. The first connecting bolt and the second connecting bolt are suitable for being connected with components. Therefore, the damage of dense holes to the integrity of the section of the profile is eliminated, and the panel is more attractive through the hidden bolt layout. Meanwhile, the contact area of the extension section and the inner frame of the box body is increased, a three-dimensional stress supporting structure can be formed through multi-point bolt locking, and the overall deformation resistance of the splicing panel is further enhanced.

The utility model discloses a tire bead ring resistant to strong load winding, which relates to the technical field of automobile all-steel radial tires, and comprises a lining, a carcass ply is fixedly arranged on the inner side wall of the lining, a hard apex is fixedly arranged on the inner side wall of the carcass ply, and the hard apex is fixedly arranged on the outer side wall of the lining. The inner wall of the hard apex is coated with the main steel wire ring and the upper steel wire ring, the hard apex is arranged between the main steel wire ring and the inner side of the tire body cord fabric and the steel wire reinforcer, the steel wire reinforcer is fixedly coated on the outer side wall of the tire body cord fabric, and the upper steel wire ring, the main steel wire ring, the steel wire reinforcer and the hard apex are added to form a special tire body turn-up mode. By applying a double-steel-wire-ring structure and special rubber, changing the combination of the tire body and the seam allowance reinforcing steel wire wrapping cloth and the like, the anti-deformation performance of the tire bead position of the tire is improved, the damage to the tire bead caused by stress concentration of a tire body turn-up endpoint is eliminated, and the overall durability of the tire bead position is improved.

The invention relates to the technical field of tire design, and particularly discloses a reinforced light truck tire bead structure which is used for solving the problem of poor performance of a tire structure in the prior art. Comprising a lining, a carcass ply is attached to the outer side of the lining, hard bead filler corresponding to a steel wire ring is arranged on the outer side of the carcass ply, soft bead filler extending upwards is arranged on the outer side of the hard bead filler, the bottom of the carcass ply bypasses the steel wire ring and extends upwards to form a wrapping structure, and the outer end of the carcass ply is a carcass ply end point. Through innovative design of the structural form and material distribution of the tire ring part, the durability of the tire ring part is improved; compared with the prior art, by applying the novel seam allowance reinforcing steel wire structure and the special rubber, changing the difference level between the tire body and the seam allowance reinforcing steel wires, isolating the end points of all steel wire components and the like, the deformation resistance of the tire bead position is improved, the damage to the tire bead caused by the stress concentration of the tire body turn-up end points is eliminated, and the overall durability of the tire bead position is improved.

This invention relates to the field of polyurethane adhesive technology, specifically to a thermoplastic polyurethane resin for bonding water-repellent fabrics, its preparation method, and its application. It is prepared from the following raw materials: polyol, isocyanate, blocked isocyanate, chain extender, bonding accelerator, water-repellent synergist, and catalyst; the bonding accelerator is a compound of γ-aminopropyltriethoxysilane and tetrabutyl titanate; the water-repellent synergist is epoxy-terminated polydimethylsiloxane. This invention, through optimized formulation, solves the technical problems of insufficient bonding strength and poor resistance to damp heat aging of existing polyurethane resins for water-repellent fabrics, while also considering the synergistic effect of resin processing fluidity and water-repellent performance. It is suitable for composite processing of water-repellent fabrics in high-frequency use scenarios and has broad industrial application prospects.

The invention relates to a method for operating an electric machine (6) and a regulating device (10) which is configured to implement the method. The method comprises a control method which is dependent on a predetermined target value (M 目标 ) for normal operation (Ψ 正常 ) and special operation (Ψ 特殊 ), where the normal operation (Ψ 正常 ) includes the step of detecting the operating state, wherein, if the detected operating state is a special state, a special operation (Ψ 特殊 ), the special run (Ψ 特殊 ) includes the periodic value (M 周期 ) is modulated to a predetermined target value (M 目标 ) and the step of detecting the operating state, wherein, for the case where the operating state is a normal state, normal operation (Ψ 正常 ).

The invention discloses a nano hydrogen-resistant internal coating for a natural gas pipeline and a preparation method. The nano hydrogen-resistant internal coating comprises a substrate material and nano particles doped in the substrate material, the substrate material is selected from an oxide or chloride taking nickel as a substrate; the nano particles doped in the substrate material comprise SiC nano particles, ZrO2 nano particles and Si3N4 nano particles; and the Ni-ZrO2 / SiC / Si3N4 composite nano hydrogen-resistant inner coating is formed. According to the nanometer hydrogen-resistant internal coating, an optimal plating solution formula is developed based on an electrochemical deposition method, the nanometer hydrogen-resistant internal coating with good hydrogen-resistant performance and high compactness for the natural gas pipeline is prepared by continuously optimizing process parameters, contact between hydrogen and the pipeline is physically isolated, damage of hydrogen atoms to the pipeline is eliminated, and the hydrogen-resistant performance of the hydrogen-doped pipeline is improved; the problems that a hydrogen-doped natural gas pipeline is low in hydrogen doping proportion and high in failure risk are solved.

The utility model discloses an inclined stand column operating platform for installing a steel structure, which comprises a platform bottom surface, the platform bottom surface is parallel to a horizontal plane, the platform bottom surface is provided with installing holes matched with steel columns, guardrails are arranged on the platform bottom surface, the guardrails and hanging lug plates are arranged on the periphery of the platform bottom surface, and the hanging lug plates are arranged on the platform bottom surface. The hanging lug plates and the hanging holes are arranged at the four corners of the bottom face of the platform respectively, the hanging holes are formed in the hanging lug plates, the hanging lug plates are arranged on steel columns, and the steel wire ropes are connected between the hanging lug plates and the hanging holes. According to the utility model, the preparatory work before hoisting can be reduced, the manpower is reduced, the paint repair range is reduced, the working efficiency is improved, and the applicability is higher.

The invention discloses a method for producing a coated slow-release trace element poultry premix, and relates to the field of poultry feed premix. The method for producing the coated slow-release trace element poultry premix is ​​characterized in that: the outer gastric-soluble coating layer and the inner pellet core are 8-18:80-100 in weight ratio, and the particle size of the coated slow-release trace element premix is ​​1.700 mm (10 mesh) to 0.550 mm (30 mesh). Compared with the current trace element application technology products, the coated slow-release trace element poultry premix produced by the invention can reduce the amount of trace elements added in feed by 60% or more, thereby reducing environmental pollution. The coated slow-release trace element poultry premix is ​​a new type of poultry feed additive that is efficient, safe, environmentally friendly and green.

The utility model provides semiconductor cleaning equipment, which comprises a process tank, the drying tank is buckled on the process tank; the first supporting structure is movably arranged in the process tank; the second supporting structure is arranged in the drying groove, the second supporting structure comprises at least one pair of oppositely-arranged supporting assemblies, and the second supporting structure has a supporting state and an avoiding state; and in the supporting state of the second supporting structure, the two oppositely-arranged supporting assemblies are supported on the part, separated from the liquid interface, of the wafer, so that the wafer located at the position partially separated from the liquid interface is separated from the first supporting structure and the liquid interface. According to the semiconductor cleaning equipment disclosed by the utility model, the wafer is fixed by supporting the part, separated from the liquid interface, of the wafer through the supporting assembly of the second supporting structure, so that the first supporting structure can be separated from the wafer part below the liquid interface; the remaining part of the wafer does not have a contact point with the first supporting structure in the subsequent process of separating from the liquid interface.