Quarter stroke valve remote transmission mechanism

Abstract

The invention discloses an angular travel valve remote transmission mechanism. The angular travel valve remote transmission mechanism comprises an operation table, flexible shafts A (2), adjusting rods, flexible shafts B (4) and a valve adapter. The operation table is connected with the valve adapter sequentially through the flexible shafts A (2), the adjusting rods and the flexible shafts B (4). The valve adapter is connected with a valve, and the flexible shafts B (4) are limited and turn through a flexible shaft fixing device. The flexible shafts can be bent within the reasonable bending radius range at will in the transmission process, long-distance transmission is achieved, and the problem about acute angle turning can be solved in the transmission process. The middles of the flexible shafts are provided with tightness adjusting mechanisms, namely the adjusting rods, and synchronism and consistency of opening and closing of a flexible shaft remote control mechanism and opening and closing of the valve can be guaranteed.

Description

technical field [0001] The invention relates to a transmission mechanism, in particular to a remote transmission mechanism for an angular stroke valve. Background technique [0002] In the radiation and high-temperature areas of the nuclear power field, in the toxic, hazardous, flammable and explosive areas of chemical production, and in the deep water and sealed areas of marine engineering, there are many valves that need to be manually switched. Workers need to wear special protective clothing or do special treatment. To switch valves in these areas, the industry can only lead out the valve operating position through extension rods and universal joints. The operating distance is at most 3 to 5 meters. If there are obstacles in the valve and operating position, it cannot be solved. , In this case, the remote operating mechanism of the manual quarter-stroke valve has its unique advantages. The existing angular stroke valve transmission mechanism is mainly a small shaft tran...

AI Technical Summary

Problems solved by technology

The existing angular stroke valve transmission mechanism is mainly a small shaft transmission mechanism composed of a rigid rod and a universal joint. The transmission distance of this small shaft transmission is relatively short, and obstacles cannot be bypassed, so the scope of application is very limited.

There is also a big defect in the existing quarter-stroke valve transmission mechanism, that is, the quarter-stroke valve usually rotates 90° in the switching process, but the existing quarter-stroke valve transmission mechanism cannot guarantee the synchronization of the remote switch and the valve switch (for example: the current Some transmission mechanisms rotate the valve to 90°, but the actual valve rotates to 80°)

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