Charging valve

Abstract

The invention relates to a charging valve. The charging valve comprises an integral valve body and a valve element which is longitudinally arranged in an inner cavity of the valve body in a sliding mode. The valve element is packaged in the inner cavity of the valve body through a sealing cap. The valve body is provided with at least one liquid inlet and at least one liquid outlet communicated with the liquid inlet. The shape of the upper portion of the valve element is matched with that of the inner cavity of the valve body. The outer wall of the valve element is closely attached to the inner wall of the valve body, so that part of the inner cavity on the upper portion of the valve body is isolated to form a control cavity. The outer wall of the sealing cap or the outer wall of the valve body is provided with at least one control port communicated with the control cavity. Fluid entering and getting out of the control cavity from the control port can push the valve element to longitudinally move, so that connection and disconnection between the liquid inlet and the liquid outlet are controlled. The valve body is of an integral structure, concentricity is high, and the charging valve is high in pressure resistance, small in size, easy to produce, easy in function implementation, convenient to operate and install and high in universality.

Description

technical field [0001] The invention relates to a filling valve. Background technique [0002] The filling valve generally includes a valve body and a valve core, which acts as a one-way check between the hydraulic oil tank and the hydraulic cylinder, and the oil outlet hole of the valve body is connected with the oil inlet hole of the hydraulic cylinder. At present, the oil outlet hole of the liquid filling valve on the market is generally set on the side of the valve body and its number is only one, which will cause uneven impact force of the oil on the valve core when the oil enters, and the accuracy of the valve core will decrease over time, and even Frequent replacement may be required, which may also result in less oil intake and difficult spool control. In addition, the inner cavity of the spool installed in the filling valve currently on the market is generally composed of two parts, which will result in low concentricity and low pressure resistance, and will also l...

AI Technical Summary

Problems solved by technology

At present, the oil outlet hole of the liquid filling valve on the market is generally set on the side of the valve body and its number is only one, which will cause uneven impact force of the oil on the valve core when the oil enters, and the accuracy of the valve core will decrease over time, and even May need to be replaced frequently, and may also result in low oil intake and difficult spool control

In addition, the inner cavity of the filling valve installed on the market is generally composed of two parts, which will result in low concentricity and low pressure resistance, and will also lead to a more complex structure, difficult control and a larger overall volume of the filling valve.

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