Magnetic force driving mechanism for valve

Abstract

The invention provides a magnetic force driving mechanism for a valve. The mechanism comprises a valve rod, wherein the valve rod is supported in a left-end disc through a bearing; the left-end disc is connected with a right-end disc through a connecting sleeve; an outer magnetic cylinder body which is located inside the connecting sleeve is supported on the right-end disc through a bearing; the inside of the outer magnetic cylinder body is provided with an inner rotor which is installed on the valve rod; an isolation hook which is fixedly connected with the left-end disk is arranged between the inner rotor and the outer magnetic cylinder body; a seal pad is arranged between the isolation hook and the left-end disc; inner magnetic blocks are inlaid on the circumferential surface of the outside of the inner rotor; and outer magnetic blocks matched with the inner magnetic blocks are inlaid on the circumferential surface of the inside of the outer magnetic cylinder body. When the magnetic force driving mechanism is used, the valve rod is connected with the valve core of the valve; the left-end disc is fixedly connected with a mounting seat arranged on a tank body in a system; the inner rotor located on the end head of the valve rod is covered in the isolation hook, thus static seal is achieved; and when the outer magnetic cylinder body is rotated, the inner rotor rotates under the action of the magnetic blocks, so as to realize non-contact type dynamic transfer and no medium leakage, thus the magnetic force driving mechanism provided by the invention is safe and reliable, maintenance frequency is reduced, and production efficiency is improved.

Description

technical field [0001] The invention relates to a magnetic drive mechanism for a valve. Background technique [0002] At present, in industrial production, especially in the operation system of toxic, harmful, flammable, explosive and other media, the valves used are all dynamic sealing type, that is, the rotating part of the valve stem adopts mechanical seal or packing type seal, This kind of sealing structure often leaks during operation, and requires frequent maintenance and treatment of the seals, which not only has a low degree of safety, but also affects production. Contents of the invention [0003] The purpose of the present invention is to provide a non-contact transmission of power, static sealing, safe and reliable, without frequent handling of the magnetic drive mechanism for valves to overcome the shortcomings of the prior art. [0004] The magnetic drive mechanism for valves of the present invention includes a valve stem, the valve stem is supported in the l...

AI Technical Summary

Problems solved by technology

[0002] At present, in industrial production, especially in the operation system of toxic, harmful, flammable, explosive and other media, the valves used are all dynamic sealing type, that is, the rotating part of the valve stem adopts mechanical seal or packing type seal, This kind of sealing structure often leaks during operation, and the seals need to be repaired frequently, which not only has a low degree of safety, but also affects production.

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