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Overflow valve

A relief valve and valve seat technology, applied in the field of hydraulic valves, can solve problems such as thread loosening of relief valves

Pending Publication Date: 2018-01-09
LOVOL HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an overflow valve to solve the problem of howling due to the vibration of the overflow valve and the loosening of the thread of the overflow valve due to the vibration of the overflow valve

Method used

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Embodiment Construction

[0015] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0016] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "center", "inner", "outer", "top", "bottom" etc. are based on the attached The orientation or positional relationship shown in the figure is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a reference to this invention. Invention Limitations.

[0017] In the description of the present invention, it should be noted that ...

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Abstract

The invention relates to the field of hydraulic valves, in particular to an overflow valve. The overflow valve comprises a valve seat, a valve sleeve, a valve core and an elastic part; the valve seatis connected with the valve sleeve; the valve seat and the valve sleeve form an oil cavity with an opening in one end; the valve core is mounted in the opening in a sleeving and sliding manner; the elastic part is arranged in the oil cavity; the two ends of the elastic part are respectively pressed against the inner surface of the valve seat and the valve core in a releasable manner; and a dampingpart which communicates with an oil inlet and the oil cavity is arranged in the axial direction of the valve core. The damping part which communicates with the oil inlet and the oil cavity is arranged in the axial direction of the valve core, so that hydraulic oil which acts on the outer side of the valve core can enter the oil cavity inside through the damping part, the inner side and the outerside of the valve core communicate with each other through the hydraulic oil all the time, and a fluid which changes rapidly is smoothed through the damping part; and therefore, the impact on the valve core is reduced to reduce vibrating and squeaking caused by the impact.

Description

technical field [0001] The invention relates to the field of hydraulic valves, in particular to an overflow valve. Background technique [0002] At present, vibration and noise in the hydraulic system are one of the common failures of the hydraulic system. In the hydraulic system, the relief valve is not only an important component for providing pressure to the hydraulic system and preventing the system from overloading, but also the second largest cause of vibration and noise in the hydraulic system. Therefore, it is very meaningful to study the vibration cause of the overflow valve to reduce the vibration of the hydraulic system and ensure the normal operation of the hydraulic system. [0003] When the relief valve is unloaded, pressure shock noise will occur due to the sudden drop in the pressure of the hydraulic circuit. The higher the working conditions of high pressure and large capacity, the greater the impact noise. This is caused by the hydraulic shock caused by th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02F16K47/02
Inventor 张建峰邵年张继伟张心雨张继东
Owner LOVOL HEAVY IND CO LTD