4results about How to "Open sensitive" patented technology

This invention belongs to the field of check valve technology, specifically a float-type check valve, including a valve body, a mounting base, a float housing, and a hollow float. The float housing is rotatably assembled via a spherical seat on the mounting base. A ball bearing is provided between the spherical seat and the ball head of the float housing, allowing the float housing to automatically adjust its verticality when the valve body is tilted, maintaining its central axis perpendicular to the horizontal plane. The float housing has a through hole communicating with the inlet, a spherical cavity accommodating the float, and a through groove communicating with the outlet. A branch channel extending to the valve seat sealing surface is opened on the inner wall of the through hole, which can assist in pushing the float open during forward flow. A multi-stage staggered-hole throttling disc is provided on the inner side of the outlet end to reduce the reverse flow velocity. The float housing adopts a split plug-in structure. This invention solves the problems of poor sealing, difficulty in opening under low pressure, and susceptibility to water hammer in traditional float valves installed at tilted angles. It has advantages such as reliable sealing, sensitive response, and adaptability to complex installation environments.

The present application relates to an oxygen supply device and an oxygen supply system for a respirator, comprising a connecting pipe connected to an automatic air supply component, the other end of the connecting pipe passes through a sealing cover and is connected to a first chamber, the automatic air supply component has a first connecting end and a second connecting end, the first connecting end is connected to the second chamber, and the second connecting end is connected to an external oxygen supply device, when the gas in the second chamber decreases, the elastic diaphragm assembly moves away from the sealing cover to connect the first connecting end and the second connecting end of the automatic air supply component, when the gas in the second chamber increases to a preset pressure, the elastic diaphragm assembly moves close to the sealing cover, the pressure in the first chamber increases, so that the connection between the first connecting end and the second connecting end of the automatic air supply component is closed, thereby realizing that the opening and closing of the air supply are relatively sensitive and the reliability is high, and it is not easy to lose position during the expansion and contraction of the air storage chamber, and there will be no problem of failure of the entire device.

The utility model relates to the technical field of water conservancy construction engineering, in particular to a canal slope safe operation mechanism, which has the main technical scheme that the canal slope safe operation mechanism comprises an inner drainage pipeline extending into a canal and a non-return drainage valve arranged at the end part of the inner drainage pipeline, and a groove structure capable of accommodating the non-return drainage valve is arranged on the slope of the canal. A cover plate structure is arranged on the groove; a plurality of water outlet holes are formed in the cover plate structure. According to the safe operation mechanism for the canal slope, when flowing water in a canal sloshes, the phenomenon that a non-return type drainage valve at the end of an inner drainage pipeline is opened disorderly by sloshing water waves can be effectively avoided, and safe operation of the non-return valve can be effectively guaranteed.

The present invention discloses a compression-release type engine cylinder brake device, comprising a driving force input camshaft, a brake rocker assembly driven by the driving force input camshaft and capable of rotating and swinging around a rocker shaft, the brake rocker assembly comprising a brake rocker and a valve clearance control mechanism arranged in a mounting hole of the brake rocker, the valve clearance control mechanism comprising a brake plunger, a return spring with an upward elastic force on the brake plunger, and a drive device with an axial downward force on the brake plunger, the brake plunger facing the exhaust valve. The driving piston of the present invention synchronously drives the upper connecting rod and the lower connecting rod to swing, because the spherical heads of the upper connecting rod and the lower connecting rod respectively perform a twisting action in the corresponding spherical groove, the upper connecting rod presses the middle slider downward during the swinging and twisting process, and then the middle slider presses the lower connecting rod, and the lower connecting rod presses the brake plunger downward, so that the brake plunger moves downward, triggering the valve cap, thereby realizing the engine cylinder braking operation.