35results about How to "Improve air leakage" patented technology

The invention provides a foaming and filling type tire and a manufacturing method thereof. The foaming and filing type tire comprises a steel ring, a tire and a filling material, wherein the steel ring is connected to a power device of a vehicle, and a filling port is formed in the inner edge of the steel ring; the tire is arranged on the outer edge of the steel ring; the filling material is poured between the steel ring and the tire from the filling port of the steel ring; the filling material is a foaming material, when the tire is broken, air cannot leak, the vehicle can be supported continuously, and the purposes that the tire is free of air leakage or tire burst and the vehicle can be supported continuously when the tire is broken can be achieved. Common steel rings and tires can be used, the foaming material takes the place of common filing gas, the foaming material is poured into the tire, the disadvantages of air leakage and tire burst for common gas filling type vehicle wheelsare improved, and the purpose of improving the safety can be reached.

The invention relates to a steel ball and strong magnet compound type sealing device used for a sintering machine. The steel ball and strong magnet compound type head and tail sealing device comprisesa sealed ore tank, steel balls, high-strength magnets, a sealing beam and an adjustment base. The sealed ore tank is filled with the high-strength magnets and the steel balls of different grain diameters instead of a traditional sealing cover plate, and the rolling sealing effect is achieved. By arranging a magnetic sealing device at the positions of slide way end faces of adjacent trolleys, by means of dependence on the attraction effect of a directionally-magnetized magnet device, iron powder is firmly attracted to the positions of seams of the end portions of slide plates, and then the sealing effect is achieved. Air leakage of a whole sintering system is further reduced, and the ideal ore sintering effect is achieved; and meanwhile electric energy is saved, and high application and popularization value is achieved.

The invention provides a dual-air tap inflating joint capable of improving air leakage, comprising a dual opening cylinder, a centering piece and a toggle piece, wherein the centering piece is accommodated in an accommodation hole of the dual opening cylinder and can move relative to the accommodation hole of the dual opening cylinder; a first O-shaped ring is sleeved at the first end of the centering piece; a second O-shaped ring is sleeved at the second end of the centering piece; a penetrating hole is arranged between the first end and the second end of the centering piece; the toggle piece is provided with an eccentric block which can push the centering piece to slide left and right; O-shaped rings are sleeved at two ends of the eccentric block; when the toggle piece is not spanned, afirst inflating space and a second inflating space of the centering piece are not communicated; and the second inflating space of the centering piece is communicated with a channel of the dual opening cylinder. With the technical scheme provided by the invention, the air leakage phenomenon that a pumping head is connected with the air tap can be improved; the air leakage situation that the togglepiece is spanned after the charging is finished to release the air tap of a bicycle type can be avoided; and the dual air tap inflating joint is convenient to process, can effectively save the cost and has the convenience and the practicability.

The invention provides a shape memory polymer-based air filling extensible wing and methods for manufacturing the same, relates to an extensible wing and a method for manufacturing the same, and aims to solve the problem that the strength and the rigidity, needed for the flight of a plane, of the wing are not met, and the problem that the wing is easily damaged for air leak when the punching pressure is too big in the conventional air filling extensible wing. A skeleton of the wing is made of shape memory polymers. The method I comprises a step of manufacturing the skeleton of the wing comprise: designing a mould, manufacturing an uncured fiber reinforcement shape memory polymer blank, heating the blank at a temperature of between 70 and 80 DEG C for 16 to 24 hours, demoulding the fiber reinforcement shape memory polymer blank, which is heated to be cured, to obtain a corresponding wing rib or wing beam, and then connecting and fixing the wing rib and the wing beam to form the skeleton of the wing. The method II comprises: keeping warm for 60 minutes at a temperature of 75 DEG C, heating the skeleton of the wing to the temperature of 100 DEG C, keeping the temperature for 30 minutes, cooling skeleton of the wing to the temperature of 75 DEG C, and keeping the temperature for 24 hours. The air filling extensible wing of the invention meets the strength and the rigidity, needed for the flight of a plane, of the wing the sealing property of the wing is good, and the method for manufacturing the wing has an advantage of simple process operation.

The invention provides a multi-layer negative pressure sealing drainage wound protection device, comprising a porous foam cushion, a drainage tube with one end located in the porous foam cushion, the porous foam cushion is a multi-layer composite foam cushion, including a negative pressure conduction layer and The drainage protection layer, the negative pressure conduction layer is a hydrophobic porous foam material layer, the drainage protection layer is a hydrophilic porous foam material layer, and the drainage tube is placed in the negative pressure conduction layer; it also includes an oxygen-containing liquid flushing tube, an oxygen-containing liquid The flushing tube and the drainage tube enter the porous foam cushion side by side, the drainage tube passes through the porous foam cushion and is located on the lower surface of the drainage protective layer, and its tail end goes deep into the drainage protective layer for positioning, and small holes are arranged on the tube wall. The introduction end of the drainage tube and the oxygen-containing liquid flushing tube is fixed by a common elastic sealing film floppy disk. The elastic sealing film floppy disk includes a disc and an outwardly extending elastic sealing film bonded to the disc. There is drainage in the middle of the disc. The drainage inlet nozzle of the tube and the irrigation inlet nozzle of the oxygen solution flushing tube. There is a longitudinal slit at the inlet end of the drainage tube of the porous foam cushion, which is convenient for the introduction of the nozzle to turn over.

The invention discloses a thin combined installation door and window auxiliary frame which is made of metal or plastic profiles and has a bridge-breaking heat insulation type and an ordinary type, wherein each type has a push-pull mode and a sliding mode. The auxiliary frame is in a shape of double Es, the thickness of the auxiliary frame is larger than 4mm and smaller than 15mm, wall fixing screws and angle steel fixing screw grooves are arranged on the surface of the auxiliary frame, and an angle steel groove and angle steel are arranged on the back surface of the auxiliary frame. The auxiliary frame is provided with a standard seat frame for supporting the installation of the auxiliary frame, wherein the seat frame is made of aluminum alloy or metal profiles and has an adjustable mode and a fixed mode. Clamping rods, clamping hooks, horizontal correction devices, vertical correction devices, sill concentric correction devices and rulers are arranged on the seat frame. In installation, the auxiliary frame is fixed on the seat frame through the screws, the seat frame is installed in a door and window hole to be clamped tightly, correction is performed through a correction device, a wall horizontal inked line and a wall vertical inked line, hard plastic gaskets are wedged the back surface of the auxiliary frame tightly, the auxiliary frame is fixed on the wall through two lines of screws, the seat frame is dismantled, cement mortar is filled in slits between the frame and the wall, and a firm standard door and window auxiliary frame is formed after the cement mortar is coagulated.

An ignition groove of a natural gas rotary engine comprises a front wall face, a back wall face and a groove channel which is arranged between the front wall face and the back wall face. The front wall face is composed of an arc section and a non-arc section embedded with a carborundum sheet, and the back wall face is composed of an arc section and a non-arc section embedded with a carborundum sheet. The front wall face and the back wall face extend parallelly from the bottom to an air cylinder molded surface, and respectively extend from the position close to the air cylinder molded surface to form arc-shaped wall faces. The radius of an arc on one side of the front wall face is smaller than that of one side of the back wall face. A rectangular concave pit is formed in a non-arc wall face of the groove channel, and is embedded with a carborundum sheet which is coated with a platinum catalyst coating. The depth of the concave pit is equal to the thickness of the carborundum sheet, and therefore the arc sections of the front wall face and the back wall face and the non-arc sections which are embedded with the carborundum sheets of the front wall face and the back wall face are enabled to be respectively connected smoothly. According to the ignition groove of the natural gas rotary engine, the engine ignition is enabled to be convenient, combustion is promoted and accelerated by utilizing of a stable flame back frontal surface after ignition, combustion efficiency is improved, and whole performance of the engine is improved.

The invention relates to a side compound sealing device of a sintering machine, which includes a side sealing assembly: the assembly includes an upper sealing cover plate, a lower sealing cover plate, a high-strength magnet, flexible rubber and a flexible rubber panel; and a roller guide assembly; the The assembly includes rollers, roller support plates and roller tracks; the roller support plates are fixedly connected in pairs to the left and right sides of the bottom of the trolley, and the rollers are respectively rotatably connected between each pair of roller support plates, and the roller tracks correspond to It is arranged at the bottom of the roller, and one end of the roller track is fixedly connected to the side of the trolley, and the other end is fixedly connected to one side of the bottom end of the lower sealing cover plate. During the sintering process, the negative pressure of the bellows is used to make the flexible rubber contact with the upper and lower sealing cover plates to form a sealing wall, and the rollers are used to replace the original side slideway device at the bottom of the trolley, so that the sliding seal becomes a rolling seal, which effectively reduces the contact between the trolley and the sliding It also has a certain guiding effect to reduce the air leakage caused by the deviation of the trolley.

The invention discloses a hub mold which comprises a lower mold bearing seat, a lower mold, lower mold windows and a spure spreader, wherein the lower mold is arranged in the center of the lower mold bearing seat; the lower mold comprises a first lower mold and a second lower mold; multiple lower mold marks which are circumferentially and uniformly arranged are arranged on the side surfaces of the first lower mold and the second lower mold; the spure spreader is arranged in the center of the second lower mold; multiple lower mold windows are raised on the upper surface of the second lower mold; a lower mold window positioning hole is formed in the center of each lower mold window; a circular groove is formed in the bottom of the lower mold bearing seat; multiple lower mold air pipe rings are arranged in the circular groove; the lower mold air pipe rings are contacted with outside by virtue of lower mold air pipes positioned at two ends of the lower mold air pipe rings; an opening is formed in the bottom of the lower mold bearing seat; and one end of each lower mold air pipe is fixed in the opening by virtue of a fixing piece.