2results about How to "Realize anti-theft effect" patented technology

The utility model relates to the technical field of anti-theft valves, in particular to an anti-theft valve for an oil production wellhead, which comprises a valve body, a valve cover, a hand wheel, a valve rod cover, an anti-theft device, a valve rod and a rotating device, a hand wheel is clamped and fixed to the middle of the rotating device, and an inner cavity of the rotating device is fixedly connected with a valve rod. According to the anti-theft valve for the oil extraction wellhead, the anti-theft hole is rotated through a key, the limiting linkage rod is driven to slide in the limiting through groove, the protruding part at the top end of the limiting linkage rod slides in the sliding clamping groove, the anti-theft device is fixedly connected to the top end of the valve rod cover, and the anti-theft device is fixedly connected to the top end of the anti-theft hole. A limiting through groove and a sliding clamping groove contract inwards, the two ends of a limiting linkage rod arranged in a mirror symmetry mode extrude a spring in an anti-theft cylinder, at the moment, a limiting block arranged at the bottom end of the limiting linkage rod limits the valve rod, and the anti-theft effect is achieved.

The utility model discloses a gas meter with anti -theft function, including gas meter body, still include: the top surface of gas meter body is overlapped and is led to the base, one end of base is fixedly connected with the sleeve, the middle fixedly connected with the locating rod of base, the middle of locating rod is provided with trapezoidal piece, wherein, the top of base is provided with anti -theft cover, one side of anti -theft cover bottom is provided with connecting groove, one side of connecting groove inner wall is slidably connected with locking block, one side of locking block is fixedly connected with locking spring, wherein, the middle of slot is inserted with the plug -in stick, the bottom fixedly connected with the overlap inclined block of plug -in stick, the top fixedly connected with the adjusting rod of plug -in stick, through setting the mode of anti -theft cover in the upper end of gas meter body, through pressing, can complete the installation of anti -theft cover, makes the installation of gas meter more convenient and fast, and through pulling plug -in stick makes the contraction of locking block of base both ends sleeve to promote, makes the overhaul of this gas meter more convenient.