68results about How to "Effective close" patented technology

A non-return valve (10), typically of commonly called duckbill valve shape, comprising a valve body (12) and a valve membrane (14). The valve body (12) is generally tubular and includes an elongate passageway (16) with inlet (18) and outlet (20) at opposing ends. The valve membrane (14) is of a generally conical-shaped diaphragm formed integrally with the valve body (12). The diaphragm (14) has a collapsible opening or aperture (22) located at or adjacent the cones apex. The conical diaphragm (14) is oriented with its apex pointing downstream. The resiliently flexible material from which the diaphragm (14) is constructed, ensures that the diaphragm (14) in a collapsed condition obstructs or closes the aperture (22) to prevent fluid flowing in a reverse direction, i.e. backflow towards the inlet. Pressurisation of fluid within the passageway (16) on the inlet (18) side of the diaphragm (14 ), deflects the diaphragm to open the aperture (22) so that fluid can flow through the passageway from the inlet (18) to the outlet (20) only. A membrane permeable in one direction only can also be made from a panel or sheeting incorporating many such collapsible non-return duckbill valves on the surface of the panel or sheet.

The invention relates to a double-shaft door-opening hinge and application thereof. The double-shaft door-opening hinge comprises a hinge base and two rotating shafts, wherein two grooves are formed in the hinge base; the hinge base is used for connecting with a box; one ends of the two rotating shafts are connected with a box door; and the other ends of the two rotating shafts are respectively located in the two grooves of the hinge base. The double-shaft door-opening hinge provided by the invention utilizes the design of the rotating shafts capable of moving along the grooves to change the manner of the traditional door corner capable of rotating around a fixed spindle in an opening / closing process of the door corner, so that the position of the door corner can be changed in a rotating process, the manner of moving the rotating shafts is utilized to pull the door corner to move the position, the door corner is always located on the position within the lateral edge of the box, the door corner is prevented from being influenced by the object environment beyond the lateral edge of the box, and the effective opening or closing of the door under any environments can be guaranteed.

The invention relates to a multifunctional fuel safety protecting device which is characterized in that an elastic valve core consequently closing fuel and controlled by the pressure of the fuel is arranged at a fuel inlet pipe of the prior fuel reducing valve, the valve core is matched with a valve seat consequently closing the fuel, internal-close type tapered switch valve protecting a switch against abrasion and leakage is arranged at a fuel outlet pipe so as to achieve the purposes of preventing the abrasion and the leakage of the switch, accidently-unjointed pipe leakage, ultralow pipe pressure, pipe fuel supply stopping, and pipe-supplied fuel entering house, and automatically closing the fuel when a user forgets closing a fuel valve. In order to be convenient for starting the fuel for use, the top end of an upper casing is also provided with a starting switch which can automatically restore; in order to ensure the fuel safety protecting device is used more safely in high-pressure fuel, the proper position of the fuel inlet pipe is provided with a round ball valve core and a round ball valve core which are matched mutually; in order to ensure that the fuel safety protecting device can be normally safely used in low-pressure pipe fuel, the center of a lower casing is provided with a permanent magnet which is matched with a gag bit at the bottom of a pressure-adjusting pull rod.

The invention discloses an electronic lock, and belongs to the field of safety technology protection. The electronic lock solves the problems that in the prior art, the electronic lock is complex in structure, high in cost, inconvenient to use. The electronic lock comprises a lock body provided with a cavity, a lock cover, a drive motor, a power supply system, a coded lock device, a first lock tongue, combined type lock core, a first lock core, a second lock tongue, a second lock core and a heaven and earth rod mechanism. The power supply system supplies power for the drive motor, and the coded lock device is electrically connected with the power supply system. The first lock tongue is arranged on the upper end of the lock body and can penetrate through the side face of the lock body, and the combined type lock core can rotate around the lock body and is used for dragging the first lock tongue back into the lock body. The first lock core is used for pushing the combined type lock core and is meshed with an output shaft of the drive motor. The second lock tongue is arranged on the lower end of the lock body and can penetrate through the side face of the lock body, and the second lock core is meshed with the combined type lock core and driven by the combined type lock core and is used for dragging the second lock tongue back into the lock body. The second lock core is fixedly arranged on one side, opposite to the first lock tongue and the second lock tongue, of the lock body, and achieves contracting through the combined type lock core and the second lock core. The heaven and earth rod mechanism achieves popping-up through a first springing control mechanism and a second springing control mechanism.