Improved reversing valve

Abstract

The invention relates to an improved reversing valve. The improved reversing valve is characterized by comprising a valve body, a valve deck and a miniature motor, wherein a first working chamber and a second working chamber are arranged between the valve body and the valve deck, a first reversing shaft and a second reversing shaft are arranged on the valve body, the first reversing shaft penetrates through the first working chamber, and the second reversing shaft penetrates through the second working chamber. The improved reversing valve has the beneficial effects that two oil channels are arranged on the valve deck, the two oil channels lead to the two working chambers formed between the valve body and the valve deck, two valve blocks seal an oil port set on the valve deck by rotating the reversing shafts on two sides of the valve body, the valve blocks seal the other oil port set on the valve deck by reversely rotating the reversing shafts on two sides of the valve body, and meanwhile the original sealed oil port set is opened, and thus the reversing effect is achieved.

Description

technical field [0001] The invention relates to the field of valves, in particular to an improved reversing valve. Background technique [0002] Originally, a reversing shaft is set on the reversing valve body to pass through the two working chambers at the same time, and the two oil ports are sealed by turning the reversing shaft to open the other two oil ports to connect or cut off the oil circuit to change the direction of liquid flow. . If the two oil port bosses that need to be sealed simultaneously on the bonnet are not of the same height, or the sealing surfaces of the two valve discs fixed on the valve shaft are not of the same height, then a good sealing surface cannot be formed and is easy to leak. In this way, high requirements are placed on the manufacturing precision of the valve cover, valve shaft, valve body and valve plate, which increases the difficulty and cost of manufacturing. Contents of the invention [0003] Aiming at the problems existing in the p...

AI Technical Summary

Problems solved by technology

If the two oil port bosses on the bonnet that need to be sealed at the same time are not at the same height, or the sealing surfaces of the two valve plates fixed on the valve shaft are not at the same height, a good sealing surface will not be formed and it will easily leak

In this way, there are high requirements on the manufacturing accuracy of the valve cover, valve shaft, valve body and valve plate, which increases the difficulty and cost of manufacturing.

Images