Double-drive single-gate-disc gas gate valve

Abstract

A double-drive single-gate-disc gas gate valve is used for solving the problem that an existing gas gate valve is high in overall height, limited in switching speed and inconvenient for being switched off quickly, and is characterized by consisting of a valve body 2, a bonnet 3, a transmission support 4, a rotary shaft 5, a worm gear transmission device 6, a gate disc 9 and a valve stem 17. The rotary shaft 5 is in key connection with the worm gear transmission device 6 and a rocker arm 7, the rocker arm 7 is connected with the gate disc 9 through a connecting shaft 8, and the gate disc 9 moves perpendicularly in the valve body 2 through a roller shaft 10 and a roller. The worm gear transmission device 6 drives the rotary shaft 5 to be in fixed-axis rotation, so that the rocker arm 7 drives the gate disc 9 to move perpendicularly through the connecting shaft 8. The gate disc is in transmission with a worm gear, a worm and the rocker arm to be switched on and off, and the gate valve can be switched on and off after the rocker arm is rotated by less than 60 degrees. The double-drive single-gate-disc gas gate valve has the advantages of fastness in switching, safety in use, small size and light weight, and is applicable to being a switching device used on a pipeline delivering tar gas and pure gas.

Description

Technical field: [0001] The invention belongs to the technical field of making single-gate gas gate valves, and in particular relates to a double-drive single-gate gas gate valve, which is suitable for use as an opening and closing device on pipelines containing tar gas and pure gas. Widely used in metallurgy, coking and other industries. Background technique: [0002] The sealing property of the existing double-plate gas gate valve is forced sealing, and the required sealing force is large, while the double-drive single-plate gas gate valve can be classified as a self-tight seal according to its sealing principle, and its sealing force is relatively small. , which is beneficial to reduce the sealing cost of the valve. The existing double-plate gas gate valve, no matter the open rod or the concealed rod, the movement of the gate plate is realized by the valve stem thread transmission, so that the double-plate gas gate valve must have the following characteristics. First, th...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problems that the existing gas gate valve is large in size and heavy in weight, occupies a large space at the installation site, and the opening and closing speed of the valve is limited by the pitch of the valve stem and the speed of the electric device, and provides a valve that can reduce the weight of the valve, The height makes the valve more economical, the operating cost is low, the opening and closing speed of the valve is significantly improved, the use is safer, and the operation is more convenient. Double-drive single-gate gas gate valve

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