Cast steel swing check valve and using method thereof

By installing wear-resistant pads on the contact surface between the valve disc of the cast steel swivel check valve and the internal passage port of the valve body, and installing a engaging component inside the valve body, the problem of damage to the valve disc during long-term opening and closing operations is solved, and the service life and reliability of the valve are improved.

CN119664972APending Publication Date: 2025-03-21JIANGSU EVALVE CO LTD
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Patent Information

Application Number
CN202411840576.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-13
Publication Date
2025-03-21

AI Technical Summary

Technical Problem

During the long-term opening and closing operation of the existing cast steel swivel check valve, the valve disc will hit the channel port inside the valve body, causing damage to the contact surface, failure of the seal, reducing service life and economic benefits.

Method used

A replaceable wear-resistant pad is provided on the contact surface between the valve flap and the inner passage opening of the valve body, and a engaging assembly is provided inside the valve body to allow limit fixation of the valve flap.

Benefits of technology

The wear-resistant pad avoids impact damage to the contact surface of the valve disc, extends the service life of the valve disc, and improves the convenience and reliability of the valve through the engagement assembly, and reduces maintenance costs.

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Abstract

The invention discloses a cast steel swing check valve and a using method thereof.The cast steel swing check valve comprises a valve body, the valve body is in bolted connection with an external pipeline through flange plates A fixedly arranged at the two ends of the valve body, and a valve deck is in bolted connection with the top of the valve body and used for sealing the top of the valve body; the swing assembly is detachably installed on the position, close to the top, of the inner wall of the valve body. The replaceable wear-resistant pad is arranged on the contact surface of the valve clack and the internal channel opening of the valve body, so that the contact surface of the valve clack can be prevented from being impacted and damaged through the wear-resistant pad when the valve clack is frequently reset for a long time, the internal valve clack is prevented from being replaced, only the wear-resistant pad needs to be replaced, the later maintenance cost is reduced, and the service life of the valve clack is prolonged. And the clamping assembly is arranged in the valve body, so that the check valve can conveniently select whether the valve clack is clamped and fixed or not in different working environment requirements, and then the convenience and reliability of the check valve in use are improved.
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