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 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 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 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.