Silent guide overflow valve

Abstract

The invention provides a silent guide overflow valve, and relates to the field of hydraulic power systems. The silent guide overflow valve comprises a valve body, wherein a first spring seat, a compression spring, a second spring seat and a valve core are sequentially arranged in the valve body from left to right; the central axes of the first spring seat, the compression spring, the second spring seat and the valve core are positioned on the same horizontal line; one part of the first spring seat extends into the valve body; the first spring seat is sleeved with a nut and locked on the valve body through the nut; an O-shaped sealing ring is arranged at the joint of the nut and the valve body; and the valve core is located at the right end of the valve body. A direct-acting overflow valve is improved into the silent guide overflow valve, so that the valve core has good structural support in a working state, and the valve core is prevented from vibrating; and meanwhile, a single flow hole is changed into multiple holes for flowing, and hydraulic oil can more stably pass through the overflow valve, so that the stability of overflow pressure is ensured, and the working noise is greatly reduced.

Description

technical field [0001] The invention relates to the field of hydraulic power systems, in particular to a silent guide type overflow valve. Background technique [0002] Relief valve is a hydraulic pressure control valve, which mainly plays the role of constant pressure overflow, voltage stabilization, system unloading and safety protection in hydraulic equipment. It is used for storage and logistics equipment, automobile maintenance, agricultural machinery, construction machinery, machine tools In the hydraulic power unit (hydraulic power pump station, hydraulic power station, hydraulic station) system used in fields such as wind power and RV. [0003] At present, except for the seals, most of the parts of the domestic similar relief valves use steel materials as the raw materials for the manufacture of valve bodies, valve casings, valve cores and other parts. Please refer to figure 1 , consisting of valve body 1, compression spring 3, valve core 5, O-ring 6, nut 7, pressur...

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a silent guide type relief valve, which adopts copper and stainless steel materials as the materials of the relief valve housing, valve body and valve core, avoiding the Rust failure problem, at the same time, in view of the existing relief valve using a direct-acting structure, causing the valve core to vibrate during work, affecting pressure stability and generating large operating noises, the present invention improves the direct-acting type to The silent-guided relief valve enables the spool to have good structural support when it is working, preventing the spool from vibrating. At the same time, the single flow hole is changed to a multi-hole flow flow, so that the hydraulic oil can pass through the relief valve more stably, ensuring Stable overflow pressure and greatly reduced working noise

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