39results about How to "Denied entry" patented technology

The invention relates to a penetration type transparent concrete protection paint and preparation method thereof, which comprises the following steps: diluting a fluoropolymer by diluents, adding a curing agent, mixing as the first component, and then adding silane which is used as the second component, mixing uniformly; the product is coated on the concrete surface and penetrates into the concrete for combining into one body, thereby forming a deep protection, effectively reducing water absorption of concrete, increasing packing of concrete surface, improving resistance to chemical corrosion, resistance to carbonization and resistance to frost, especially blocking the channel by which the extraneous moisture can enter into the internal part of the concrete, substantially improving waterproofness of the concrete, and effectively prolonging the service life.

The invention provides a molten steel pouring device. The device comprises a steel ladle, a middle ladle, a steel ladle sliding gate nozzle unit fixed at the bottom of the steel ladle and a middle ladle sliding gate nozzle unit fixed at the bottom of the middle ladle. The steel ladle sliding gate nozzle unit comprises a first sliding gate nozzle mechanism and a long gate nozzle mechanism. The middle ladle sliding gate nozzle unit comprises a second sliding gate nozzle mechanism and a drive mechanism. The long gate nozzle mechanism performs reciprocating rectilinear movement in molten steel along with a sliding frame to lead the molten steel into the middle ladle evenly, and accordingly, molten steel splattering can be prevented effectively, secondary oxidation caused by contact of the molten steel with the air is prevented, the molten steel purity is improved, and the casting quality is guaranteed; according to the second sliding gate nozzle mechanism, the molten steel flow is adjusted by adjusting the opening and closing of upper and lower slide brick nozzles, and the molten steel tapping amount is controlled, accordingly, various problems brought by the stopper type pouring control mode of the middle ladle is solved fundamentally, and the seal performance is good; the connection rod and slide movements are stable and accurate; the device is simple in structure, convenient to mount and dismount and good in pouring quality.

The invention relates to a needle-free injection connector without positive pressure and negative pressure, comprising a joint, wherein a receiving chamber is formed above a pipe body and a liquid medium inlet is arranged at the bottom of the receiving chamber; an elastic valve arranged in the receiving chamber and having an inner space, wherein an upper seam and a lower seam formed at the top and bottom of the elastic valve are communicated with the inner space, which can be opened to form opening shapes; when the lower seam is opened, the lower seam is communicated with the liquid medium inlet; and a bidirectional conducting element is arranged in the inner space of the elastic valve and used for opening the upper seam and the lower seam when use and provided with a liquid medium runner joint. The elastic valve returns to the status quo to close the upper seam and the lower seam after use and isolates outside air and prevents upstream of the liquid medium.

The invention provides a gel capable of preventing PM2.5 or other nasal allergens in air. The gel comprises the following components in percentage by weight: purified water, 0.2%-20% of polyquaternary salt and 0.1%-10% of cationic guar gum. The invention also provides a preparation method and use of the gel. In order to conveniently and effectively block PM2.5 particulate matters and other nasal allergens in air from entering the human respiratory system, a gel product prepared from cationic substances, namely, polyquaternary salt and guar gum serving main raw materials is firstly provided and is applied at the periphery of user nose, an air filtration screen-like electrostatic field is produced at the periphery of a nasal passage by virtue of various cations, particulate matter (especially PM2.5) in air can be effectively prevented from entering respiratory systems such as the nasal passages and lungs, PM2.5 is blocked and meanwhile, other nasal allergens in air such as turfgrass clippings, pollen, dust mites, animal and plant dander can also be blocked from entering the human respiratory system, the nasal allergy is avoided and the physical health of respiratory system, heart and lung functions and the like are protected.

The invention relates to a full reflection lighting device which comprises a cover of the lighting device, a light transmission film, a light transmission channel and a light source, and is characterized in that: the surface of the light transmission film is coated with titanium dioxide nanometer collosol to form a layer of titanium dioxide film, the thickness of which is less than 1000nm. An insulating energy-saving material is arranged between the light source and an opening of a light inlet of one end of the cover of the lighting device. Alternatively, a condensing convex lens can be arranged in front of the Insulating energy-saving material or the condensing convex lens is arranged in the back of the Insulating energy-saving material so as to increase luminous flux of an incident light source. The invention is a lighting design which can realize energy saving and utilize clean energy sources, uses the light transmission film, the surface of which is coated with high refraction index titanium dioxide to transmit light emitted by light sources such as the sun or artificial light sources and so on, and performs lighting in full reflection transmission means with high effectiveness.

The invention provides a thermocouple wire glass sintering sealing technology used for an in-core instrument. The technology comprises the following steps: providing a glass cake; and assembling the glass cake and a nickel chromium-nickel aluminum contact and a connector housing; using heating equipment for heating an assembly body formed by the glass cake, the nickel chromium-nickel aluminum contact, and the connector housing so that a melt of the glass cake is contacted with the surface of the nickel chromium-nickel aluminum contact and the connector housing; cooling the melt of the glass cake, the nickel chromium-nickel aluminum contact and the connector housing to room temperature, and respectively connecting the glass cake with the nickel chromium-nickel aluminum contact and the connector housing. According to the thermocouple wire glass sintering sealing technology used for the in-core instrument, through a glass sintering technology, tight combination of the glass cake and the nickel chromium-nickel aluminum contact and the inner wall of the connector housing is realized, an individually vertical sealing purpose of a connector is realized, and penetration of moisture into the connector assembly can be avoided.

The invention discloses a door and window frame material structure, which mainly comprises a first frame strip, a second frame strip and a third frame strip. Ends of the same sides of the first frame strip and the second frame strip are respectively connected with two ends of the third frame strip, and the first frame strip is longer than the second frame strip. Due to the structural arrangement, the door and window frame material structure has the advantages that an assembling process of a door and window frame material can be simplified, gaps generated during usage of the door and window frame material can be covered, external dust and mosquitoes can be stopped from entering an indoor environment via the gaps, and the like.

The invention relates to a nasal composition for resisting allergy and preventing PM2.5 in air as well as a preparation method and an application of the nasal composition. The composition consists of a gel, a cell nutrient, a metal ion chelating agent and a pH buffer agent; and with the application of the composition, a transparent thin film is rapidly formed around nostrils. The gel accounts for 0.01-10 parts by weight, preferably 1-5 parts by weight and more preferably 1-3 parts by weight; the cell nutrient accounts for 0.01-5 parts by weight, preferably 0.2-1 part by weight and more preferably 0.5-1 part by weight; the metal ion chelating agent accounts for 0.005-2 parts by weight, and preferably 0.1-1 part by weight; and by virtue of the pH buffer agent, pH value is regulated to 5-8. The nasal composition provided by the invention, through a physical adsorption effect, can effectively block off effects of inhaled allergens on human body; and PM2.5 particles in the air can be effectively prevented from entering such respiratory systems as nasal passages, lung and the like.

The invention relates to the field of tunnel segment construction, in particular to a segment caulking plugging structure and a plugging process. The segment caulking plugging structure comprises a waterproof adhesive tape, wherein the waterproof adhesive tape is tightly arranged between a segment and the inner wall of a tunnel, both sides of the waterproof adhesive tape extend towards both sides of a caulking respectively, a sealing groove is formed in the end, close to the inner wall of the tunnel, of the caulking, the middle of the waterproof adhesive tape is bent towards the side close to the sealing groove to form a protrusion, the protrusion is tightly attached to the interior of the sealing groove, a groove is formed in the protrusion, a water swelling strip is arranged in the groove and is tightly attached to the interior of the groove, the side, away from the segment, of the water swelling strip is tightly abutted with the inner wall of the tunnel, and polyurethane sealants fills up the space between the water swelling strip and the inner wall of the groove as well as the space between the water swelling strip and the inner wall of the tunnel as well as the space between the waterproof adhesive tape and the inner wall of the tunnel. The segment caulking plugging structure has the effects that the phenomenon that underground water seeps from the caulking is reduced, and the waterproof performance of the caulking is improved.

The invention provides a pin-free connector module and a system thereof. The pin-free connector module mainly comprises a pin-free screw cap, an elastic valve, an elastic support assembled on the elastic valve and a medicine adding cap. The medicine adding cap is provided with a hollow cavity and is connected with the pin-free screw cap, and the elastic valve and the elastic support are held in the hollow cavity; the elastic valve is provided with an upper valve body and a hollow lower valve body, and a longitudinal narrow seam is formed in the upper valve body; and the elastic support is provided with a support body and a plurality of elastic supporting ribs. According to the pin-free connector module and the system thereof, when the elastic valve is free of external force and maintains a prearranged shape, the narrow seam in the upper valve body is under an airtight seal state, and external air or drugs can be effectively prevented from entering the module and the system; and additionally, the elastic valve is provided with the elastic support, deformation and restoration positioning of the elastic valve can be effectively controlled.

This patent belongs to A47K3 / 022, which specifically discloses a honeysuckle footbath, including a basin body, the basin body comprising a basin bottom and a basin wall connected to each other, the basin wall comprising an inner wall and an outer wall, and the inner wall comprising several layers The first waterproof boards which are sequentially sealed and connected, each of which is fixed with at least one of honeysuckle and honeysuckle rattan, and a massage unit is arranged on the bottom of the basin. When taking a bath and using the tub, just add hot water directly into the tub, without taking the honeysuckle and putting it into the tub. After using for a certain number of times, if the honeysuckle has no medicinal effect, then tear off one layer of the first waterproof board, which is easy to operate.

The multifunctional sealing cover assembly comprises a base used for being connected with a container opening, a liquid outlet sleeve which can stretch into the container opening and is provided with an upper opening and a lower opening is formed on the base, a liquid pouring opening is formed in the upper end of the liquid outlet sleeve, and the lower opening of the liquid outlet sleeve forms a liquid outlet and is communicated with an inner cavity of a container. A sealing plug used for blocking the liquid outlet is arranged on the liquid outlet sleeve in a destructible mode, an upper opening of the liquid outlet sleeve is movably and telescopically connected with a sleeve column extending in the direction of an inner cavity of the container, an anti-fake structure is arranged between the base and the opening portion of the container, an upper cover is detachably connected to the upper portion of the base, and when the sleeve column moves relative to the liquid outlet sleeve, the anti-fake structure can seal the liquid outlet. The sealing plug can be separated from the liquid outlet sleeve to fall into the inner cavity of the container, then the inner cavity of the container is communicated with the outside through the liquid outlet sleeve, sealing structures are arranged between all the parts and between the parts and the opening of the container, and therefore the multi-stage sealing type quantitative pouring device has the advantages of being capable of achieving multi-stage sealing, convenient to use, quantitative in pouring and anti-fake.

The invention provides a novel lift car with ventilation and noise reduction functions. The novel lift car comprises a lift car body and further comprises an air inlet and an air outlet which are formed in the lift car body. A ventilation hose is arranged through the air inlet and the air outlet and mounted on a sound isolating layer of the lift car through a sealing piece. The sealing piece comprises a fixed seat arranged at the bottom of the sound isolating layer and further comprises a butting piece and an elastic hoop which are arranged in an assembling groove in the upper portion of the sound isolating layer. A first butting part and a second butting part which are arranged on the sealing piece of the novel lift car are each of a double-butting structure, and thus the sealing effect is better; further, the first butting part deforms under the air pressure effect, the second butting part is extruded by a sealing soft body to be attached to the ventilation hose more closely, the sealing effect is very good, and odors and dust can be prevented from entering the lift car from gaps of the air inlet and the air outlet.

The invention discloses a smart community internet-of-things video monitoring device in the technical field of smart communities, which comprises an equipment component, an electronic component is arranged in an inner cavity of a shell, and a power line penetrates through the shell; the sealing assembly comprises a positioning ring embedded in the surface of the shell, and a movable ring is arranged on one side of the positioning ring; the withdrawing assembly is arranged in the inner cavity of the shell; in the installation and connection process, a movable ring is pushed towards a positioning ring, so that a supporting rod compresses air in a U-shaped pipe and drives a sealing air ring embedded in the inner surface of an inner ring body to expand, the movable ring moves to drive an exit rod to eject an exit ring to one side of an arc-shaped rail, and a connecting shaft and the exit ring are connected and slightly rotated; and under the action of the reset spring, the power line is slightly rotated to move towards the direction of the positioning ring, so that the power line is separated from the electronic element, the problem of short-circuit fire is avoided, emergency response is timely made, the electronic equipment and other equipment connected with the electronic equipment are protected, and the safety is improved.

The invention relates to the technical field of melt purification in the copper smelting process, and discloses a solid-liquid double-phase copper alloy smelting covering agent and application thereof in order to solve the problem that in the prior art, the anti-oxidation and volatilization efficiency of a covering agent needs to be improved. The covering agent is prepared from the following raw materials in percentage by mass: 48-51% of Na2SiF6, 47-48% of CaCO3 and the balance of NaCl. A preparation method includes: preparing the raw materials; uniformly mixing; and scattering the mixture in a copper alloy melt casting furnace, stirring, keeping the furnace temperature at 900-1,100 DEG C, and forming the covering agent continuously kept in a solid-liquid double-phase state so as to cover a copper alloy melt. In the invention, the covering agent is in the solid-liquid double-phase state in the whole covering process so as to ensure that: the lower layer of the covering agent is a liquid phase and is in direct contact with the melt, then air is prevented from entering the melt, and the copper alloy melt is prevented from being oxidized and volatilized; and the upper layer of the covering agent is a solid phase and take effects of pressing and covering the liquid phase so as to form a solid protective layer.

The invention provides a building detection tool box with a drying function, and relates to the technical field of building detection equipment. The building detection tool box with the drying function comprises a base, the right side of the top of the base is fixedly connected with a storage device, the storage device comprises a box body, the right side of the box body is movably connected withthe bottom of the right side of a connecting plate through a hinge, the right side of the box body is fixedly connected with the left side of a sealing gasket, the right side of the sealing gasket isin lap joint with the left side of the connecting plate, a supporting rod is inserted into a through hole formed in the right side of the connecting plate, and a rotating handle is fixedly connected to the right end of the supporting rod. According to the building detection tool box with the drying function, the storage device, the connecting plate, the sealing gasket, the supporting rod, a connecting groove and a limiting rod are arranged, so that the rotating handle is rotated to drive the supporting rod to rotate when the box body is opened, the supporting rod drives the limiting rod to rotate, and the limiting rod is pulled out when the position of the limiting rod corresponds to the position of a fixing groove.

The invention provides a substrate cutting method and device, the substrate comprises a rigid plate and a flexible polyimide laminate on the rigid plate, the substrate cutting method comprises the following steps: laser is configured to cut the flexible polyimide laminate along a predetermined trace, so that the flexible polyimide laminate is separated along the predetermined trace; and a cutter is configured to cut the rigid plate along the preset trace, so that the rigid plate is separated along the preset trace. Therefore, a cross section fusion bonding structure is formed in the flexible polyimide laminate along the predetermined trace, and the problem that in the prior art, water vapor permeates into an interlayer interface when a cutter wheel is used for cutting a polyimide material layer is effectively solved.

The invention discloses a cover assembly facilitating liquid pouring and taking. The cover assembly comprises a base for being connected with an opening of a container body, the base is provided withan upper opening and a lower opening and is hollow, the upper end of the base is provided with a liquid pouring opening, the base is provided with a sleeve movably extending into an inner cavity of the container body, the liquid pouring opening is in communication with the inner cavity of the container body through the sleeve, a sealing sleeve is connected to the lower end of the sleeve, the sealing sleeve is provided with a liquid outlet, the upper opening of the base is connected with a sleeve column in a movable and stretchable mode, the sleeve column is movably provided with a sealing traylocated in the sleeve in a sleeve mode, and an annular sealing ring matched with the liquid outlet is arranged at the lower end of the sleeve column; and when the sleeve column movably extends out relative to the upper opening of the base, the inner side of the liquid pouring opening of the base can be blocked by the upper end part of the sealing tray, and the annular sealing ring is separated from the liquid outlet of the sealing sleeve. The cover assembly has the characteristics of multi-stage sealing effect and anti-fake function.

A film-type switch circuit board for computer keyboard is disclosed. Said computer keyboard is composed of base, at least one key structure and said circuit board, which consists of upper film circuit layer, lower film circuit layer and at least one pressure-regulating air chamber. A preset space containing air is between the upper contacts of upper film circuit layer and the lower contacts of lower film circuit laeyer and is communicated with said pressure-regulating air chamber. Said key structure can make upper and lower contacts in touth to generate keystroke signal.

The invention discloses a multifunctional anti-fake bottle. An opening of a container body is connected with a base. An anti-fake sleeve is arranged in the opening of the container body. An anti-fakestructure preventing the anti-fake sleeve from being taken out of the opening of the container body is arranged in the opening of the container body and / or between the opening of the container body and the base. The upper part of the inner hole of the anti-fake sleeve is wide, the lower part of the inner hole of the anti-fake sleeve is narrow, and a first liquid outlet is arranged in the anti-fakesleeve. A movable first valve bead used for plugging the first liquid outlet is further arranged in the anti-fake sleeve. In this way, after solution in the container body is used up, due to the anti-fake structure, it is avoided that the anti-fake sleeve is taken out and filled with other solution for adulteration, and then the anti-fake function is achieved.