35results about How to "Resist entry" patented technology

The invention relates to a two-dimension fountain device, which comprises a lower dimension mechanism and an upper dimension mechanism. The lower dimension mechanism and the upper dimension mechanism respectively comprise a motor, a speed reducer, an output shaft, a three-way connector and an overflow support ring. The upper dimension mechanism also comprises a shower nozzle with an elbow pipe. In the lower dimension mechanism, an outlet at the lower end of the shell of the speed reducer is connected with a water-proof tube; the bottom part of the water-proof tube is provided with a cable input connector; the outer wall of the lower end of the output shaft in the water-proof tube is connected with a nut; the inner wall of the lower end of the output shaft in the water-proof tube is connected with a conducting ring seat; and the bottom part of the conducting ring seat is connected with an axial conducting ring inserted into the conducting ring seat. The first ports of the two three-way connectors and the outlet of the shell of the corresponding speed reducer as well as the corresponding input shaft are respectively and hermetically connected through two rubber seal rings, a skeleton seal ring, a seal stop bowl and a stainless steel snap ring. The third ports of the two three-way connectors and the corresponding overflow support ring are hermetically connected through a polytetrafluoroethylene ring. The two-dimension fountain device is good in sealing property under high-pressure water flow, can be used for enabling the shower nozzle to continuously and freely rotate for 360 degrees and can be widely applied to various fountain facilities.

The invention belongs to the technical field of the concrete and in particular relates to a low-chloride ion high-performance concrete. The low-chloride ion high-performance concrete is prepared from the following raw materials in parts by weight: 280-360 parts of cement containing 0.005% of chloride ions, 30-50 parts of silica fume containing 0.018% of chloride ions, 70-115 parts of coal ash containing 0.005% of chloride ions, 70-120 parts of mineral powder containing 0.007% of chloride ions, 155-165 parts of water, 660-775 parts of sand containing 0.007% of chloride ions, 976-1098 parts of broken stone containing 0.001% of chloride ions, and 7.50-9.65 parts of water reducing agent containing 0.03% of chloride ions. The total content of chloride ions in the concrete provided by the invention is controlled within the range from 0.015% to 0.018%; and the concrete has the advantages of high workability, high strength and high durability; besides, the strength of the concrete is in the range from C50 to C65.

The invention discloses a flood gate which at least comprises two adjacent baffles. The adjacent baffles are connected to be an integrated flood gate body in a splicing mode through an easily-separated connecting mechanism; each baffle is provided with support legs; the bottom of each baffle and the juncture between the adjacent baffles are provided with swelling type sealing strips which swell in water. The flood gate is reasonable in structure and convenient to use, and can be easily detached and stored when not used; besides, the length of the flood gate can be adjusted as needed, and therefore the water can be effectively stopped from entering.

The invention discloses an anti-infection hemodialysis tube, which relates to the field of medical equipment. The anti-infection hemodialysis tube of the present invention comprises a dialysis outer tube, a dialysis inner tube, and a dialysis membrane. Covering the outer wall of the dialysis inner tube; the dialysis inner tube has a U-shaped or V-shaped structure, and the openings are respectively a liquid inlet and a liquid outlet; the tubes of the dialysis outer tube and the dialysis inner tube are made of polyester Tetrafluoroethylene-polyurethane-nanosilver composite. In the present invention, the dialysis tube is directly placed in the blood vessel, without taking the blood out of the body and then performing hemodialysis through a machine. The nano-silver of the tube can effectively reduce the risk of infection in the hemodialysis process, and the chitosan quaternary ammonium salt in the dialysis membrane Make the composite membrane positively charged, form a positively charged barrier, effectively resist the bacteria in the dialysate from entering the blood, and further reduce the chance of blood infection during dialysis.

The invention belongs to the technical field of preparation, and discloses an ultralimit ferroalloy and a preparation method thereof. The ultralimit ferroalloy comprises a ferroalloy matrix, and a composite bonding layer, a composite ceramic layer, a reflecting layer, a reverse refraction layer, an insulating layer and a foam carbon layer are deposited on the surface of the ferroalloy matrix in sequence; the composite bonding layer comprises a bonding layer deposited on the surface of an aluminium alloy matrix, and a precious metal layer deposited on the surface of the binding layer; and the composite ceramic layer comprises a ceramic layer A and a ceramic layer B. According to the ultralimit ferroalloy, through deposition of a plurality of coatings on the surface of the ferroalloy matrix,the service temperature of the ultralimit ferroalloy can be increased to 100 DEGC-500 DEGC higher than the melting point of the original ferroalloy matrix, so that the application of the ferroalloy in ultralimit environment is achieved. The ultralimit ferroalloy provided by the invention has excellent high-temperature mechanical and chemical stability, and can be used under the condition of exceeding the melting point of the ferroalloy matrix; and the application range is expanded.

The invention relates to a small self-locking explosion-proof connector used for power cable connection. Electric sparks must not be generated at the cable disconnection connection, so as to achieve the purpose of preventing accidents. The explosion-proof connector includes a connector housing, a sealing device, a crimping device, and a connecting device, wherein the connector housing includes two parts, an upper housing and a lower housing with a self-locking bayonet, and the connecting device is installed inside the housing, including Cable feed-throughs and cable hold-downs. The invention is suitable for cable connection in inflammable and explosive places, and can be used in dangerous chemical production and storage areas, underground coal mines, dust and explosion-related places, and the like.

The invention provides a method for preventing and treating COVID-19 based on a light wave bath room and application thereof. According to the invention, an electric kettle is arranged in a conventional light wave bathroom; traditional Chinese medicines are put into the electric kettle for decocting; the inner temperature of the bathroom is controlled not to exceed 43 DEG C; after a user enters, gas containing medicine components enters the body of the user through respiratory tracts, feet and other parts of the body to play a role in preventing and treating diseases; the medicines can excitethe nervous system and stimulate the respiratory mucosa of the user, so the content of secretory immunoglobulin on the respiratory mucosa is increased, the immune system of the body is continuously stimulated so as to promote the generation of antibodies and blocks viruses from invading the body; and thus, infectious diseases such as common cold, influenza, atypical pneumonia and COVID-19 are prevented and treated. A traditional Chinese medicine composition in the invention contains components for promoting blood circulation to remove blood stasis and resisting cancers, so the traditional Chinese medicine composition has an effect of preventing and treating cardiovascular and cerebrovascular diseases and cancers. In addition, the traditional Chinese medicine composition has the effects ofinducing resuscitation, restoring consciousness, refreshing oneself and resisting fatigue.

The invention belongs to a multi-layer extrusion type supercritical extraction kettle. A water bath cylinder is arranged on a bracket, an outer cylinder is arranged in the water bath cylinder, an inner cylinder is arranged in the outer cylinder, and an oil outlet pipe penetrating through the bracket is arranged at the bottom of the outer cylinder; an air inlet pipe is arranged at the upper end ofthe side wall of the outer cylinder; a top cover is arranged at the top of the outer cylinder, an outer cylinder seal is arranged between the top cover and the outer cylinder, the inner wall of the inner cylinder is smooth, an inner cylinder bottom cover is arranged at the bottom end of the inner cylinder, an inner cylinder seal is arranged on the contact surface of the inner cylinder bottom coverand the inner wall of the outer cylinder, the inner cylinder is filled with materials, a filter layer is arranged between the inner cylinder bottom cover and the material, the filter layer is arranged at the top of the material, and a thrust plate is arranged at the top of the filter layer; and the thrust plate is connected with the piston end of a hydraulic cylinder through a thrust spring unitpenetrating the top cover, and a top cover seal is arranged between the thrust spring unit and the top cover, and the hydraulic cylinder is connected with a hydraulic pump through an electromagnetic valve. The multi-layer extrusion type supercritical extraction kettle is simple in structure and easy to operate, the inner cylinder is not required to be overturned, manpower and material resources are saved, and the multi-layer extrusion type supercritical extraction kettle can be applied to the field of supercritical extraction.

The invention discloses a three-dimensional gear transverse / vertical inside-tightening direct-type casing pipe connection structure. The connection structure comprises a pipe body and a clamp. The clamp comprises a clamp strap and a fixing device for fixing the clamp strap. The fixing device comprises a worm and a housing, the clamp strap is arranged on the inner side of the pipe body, an open hole is formed in the position, in contact with the clamp strap, of the pipe body, the housing penetrates through the open hole in the pipe body to be fixed at one end of the clamp strap, the other end of the clamp strap penetrates into the pipe body or is exposed outside the pipe body by penetrating through the housing, the worm is arranged inside the housing and matched with the outer edge of the housing in a rotating mode, and a tooth groove of the clamp strap is meshed with external threads of the worm. Original point contact is changed to surface contact in the connection structure, the stress area is large, loosening does not easily occur, stability is good, fixing capacity is high, impact of external force can be resisted, concrete is prevented from entering the connection structure, construction can be carried out in the transverse and longitudinal directions, good practicability is achieved, the structure is simple, work efficiency is improved, and work cost is reduced.

The invention discloses a gene editing system. The coding sequence of a membrane fusion inhibiting polypeptide is integrated to a safe harbor gene of a cell in a site-specific manner, so that a membrane fusion inhibiting peptide is expressed while the safe harbor gene of the cell is not expressed. CCR5 genes are knocked out simply and conveniently in a short time. By CCR5 gene deletion and membrane fusion inhibiting peptide over-expression, the cell can simultaneously resist R5 and X4 phagocytic HIV (human immunodeficiency virus) infection, and virus mutation probability is reduced. The codingsequence of the membrane fusion inhibiting peptide is integrated to a CCR5 gene locus, and the membrane fusion inhibiting peptide can be stably expressed for a long time.