Manual/electric integrated PE ball valve opening and closing device

Abstract

The invention discloses a manual/electric integrated PE ball valve opening and closing device. The manual/electric integrated PE ball valve opening and closing device comprises a support, a first rotation shaft, a power source, a first tooth piece, a second tooth piece, first helical teeth and second helical teeth. The second helical teeth are connected with an output shaft assembly, and the output shaft assembly is connected with a valve element of a PE ball valve through a transmission rod. The transmission rod is parallel to the first rotation shaft, and the other end of the first rotationshaft is connected with the valve rod. At least part of the valve rod stretches out of the outer portion of the support and is used for rotating of the first rotation shaft through manual applicationof external force. The manual/electric integrated PE ball valve opening and closing device is simple in structure, a ball valve can be manually and electrically driven to be opened and closed, the labor field operation can be replaced, the field maintaining and checking operation requirements can be combined, the small-torque manual operation is achieved through an inner mechanism, opening and closing are conducted in a labor-saving manner, the ball valve pipeline convenience, safety and reliability are improved, and the waterproof and anti-explosion characters are good; and the size is small,starting and stopping are efficient, the labor intensity is relieved, the service life is long, and the usage cost is reduced.

Description

technical field [0001] The invention belongs to the field of valves, in particular to a manual / electric integrated PE ball valve opening and closing device. Background technique [0002] With the advancement of industrial technology, various energy transmission and raw material supply are increasingly dependent on dedicated pipelines. At the same time, the revolution of "replacing steel with plastic" in the pipeline field has established the position of PE pipes in the pipeline field. More and more gas and water pipe networks have begun to use PE pipe fittings, valves and other components in large quantities. [0003] Because polyethylene pipes have the advantages of low corrosion, small fluid resistance, light weight, fast construction, and reliable connection, polyethylene (PE) pipes entered a stage of rapid development and application at the beginning of this century, mainly used for water supply and gas outside buildings. delivery. In addition, the country has proposed...

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Problems solved by technology

In addition, the country has proposed a coal-to-gas policy since 2014, and by 2016, a total of 18 provinces have implemented the "coal-to-gas" measure, which has vigorously promoted the rapid development of the natural gas industry, which means that PE gas pipelines will be popularized on a large scale in the country. The PE pipe network has the characteristics of

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