A variable gain valve
A technology of variable gain and valve body, applied in the field of hydraulic valve, can solve the problems of poor applicability, increase the difficulty of installation and adjustment, increase the complexity of products, etc., and achieve the effect of simple structure, convenient use and high reliability
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[0020] Such as figure 1 and 2 As shown, a variable gain valve is characterized in that: the gain valve includes a cam 1, a bracket 2, a sleeve 3, a spring seat 4, a decompression spring 5, a push rod 6, a valve body, a feedback spring 10, a feedback Rod 11, large feedback piston 12 and small feedback piston 13;
[0021] On one side of the valve body: the cam 1 is installed on the bracket 2 through the rotating shaft, and the cam 1 is provided with an arcuate surface, and the arcuate surface includes a variable-diameter arcuate section and an equal-diameter arcuate section. The contour line of the variable-diameter arc-shaped surface segment has the same center of circle, and the distance between the contour line of the surface and the center of the circle increases gradually. The contour line of the surface segment is the same center of circle, and one end of the connecting rod on the sleeve 3 is in contact with the arc surface;
[0022] The spring seat 4 and the decompress...
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