Anti-abrasion and anti-breakage long-service-life drain valve spring

Abstract

The invention provides an anti-abrasion and anti-breakage long-service-life drain valve spring. The anti-abrasion and anti-breakage long-service-life drain valve spring comprises a main body structure and supporting rings at the two ends of the main body structure. The main body structure comprises a working ring and transition rings at the two ends of the working ring, the inner diameter of the working ring is larger than the outer diameter of the transition rings, and after the spring is pressed, even if the supporting ring retracts into the main body structure, the transition rings do not make contact with the main body structure. By means of the anti-abrasion and anti-breakage long-service-life drain valve spring, the structure of the working ring of the spring is improved, the outer diameter of the transition rings is smaller than the inner diameter of the working ring, it is guaranteed that when the spring is compressed to the limiting position, steel wires do not interfere with one another, the steel wires do not make contact with one another when the whole spring works, and the fatigue life is greatly prolonged; and materials are selected from conventional spring steel materials, so that the cost is also greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of spring production, and in particular relates to a wear-resistant and anti-broken long-life drain valve spring. Background technique [0002] The spring used in the discharge valve of the high-speed reciprocating pump is used in relatively harsh conditions. It is compressed 420-1000 times per minute, used 24 hours a day, and has a fatigue life of more than 200 million times per year. At present, most of these springs are imported from abroad, which is not only expensive, but also may break after 3 to 5 months of use. The use cost is high, and the working stability cannot be reliably guaranteed. Therefore, it is necessary to improve the spring, so as to avoid mutual wear and tear between the coils of the spring. Contents of the invention [0003] In view of this, the present invention aims to overcome the defects in the prior art, and proposes a wear-resistant and anti-broken long-life drain valve spring...

AI Technical Summary

Problems solved by technology

At present, most of these springs are imported from abroad, which is not only expensive, but also may break after 3 to 5 months of use. The use cost is high, and the working stability cannot be reliably guaranteed.

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