Static seal transmission type gate valve with bevel alloy seal and slag removal structures

Abstract

The invention provides a static seal transmission type gate valve with bevel alloy seal and slag removal structures. The static seal transmission type gate valve comprises a power driving device, a magnetic transmission gear, a valve, a valve element and a hub type flange. The power driving device is connected with the magnetic transmission gear, the magnetic transmission gear is connected with the valve, the hub type flange is connected with a side of the lower portion of the valve, a valve element channel is arranged inside the valve, medium channels which perpendicularly intersect with the axis of the valve element channel are arranged inside the valve and the hub type flange, a slag removal channel which is communicated with the medium channels is further arranged in the valve, the valve element is of a conical structure, the lower portion of the valve element channel is of a conical structure matched with the valve element, the valve element is mounted in the valve element channel, a bevel dynamic seal structure is arranged on one side of the valve element and an opposite surface of the hub type flange, and a plurality of elastic assemblies are arranged on the other side of the valve element. The static seal transmission type gate valve has the advantages that reliable inner and outer seal structures can be formed by a static seal structure, conical structures and the bevel dynamic seal structure, the conical structures and the bevel dynamic seal structure are combined with the valve element and the valve element channel, accordingly, outward leakage of the static seal transmission type gate valve can be effectively prevented, and the problems of high leakage rates, short service lives and high costs of existing valves can be solved by the aid of the static seal transmission type gate valve.

Description

technical field [0001] The invention belongs to the technical field of valves, and in particular relates to a static seal transmission gate valve with an inclined plane alloy seal and a slag cleaning structure. Background technique [0002] In the nuclear power and petrochemical industries, national standards have very strict requirements on the internal and external leakage rates of highly corrosive, highly radioactive and highly toxic media during storage and pipeline transportation. However, in actual work, due to valve sealing problems, especially under high temperature and high pressure conditions, it is difficult to meet the requirements of national standards with domestic valves due to the limitations of sealing materials, sealing structures, radiation, sealing force, and manufacturing processes. However, imported valves can reach the leakage level stipulated by national standards, but the service life of imported valves is very short due to the wear and tear of the s...

AI Technical Summary

Problems solved by technology

[0003]Technical problem solved by the present invention: provide a static seal transmission gate valve with inclined plane alloy seal and slag cleaning structure. The inclined plane dynamic sealing structure and the tapered structure of the valve core and the valve core channel can make the valve sealing surface fit more closely, and combined with the three static sealing structures of the valve, so that the valve forms a reliable internal and external sealing structure, effectively Prevent the leakage of the valve, and solve the problems that the internal and external leakage rate of the existing domestic valves cannot meet the national standard requirements, and the problems of short service life and high cost of imported valves

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