Piston for avoiding clamping stagnation
A piston and integrated technology, which is applied in the direction of piston, cylindrical piston, plunger, etc., can solve the problems of pilot control valve piston sticking, etc., and achieve the effects of reducing maintenance costs, long service life, improving use efficiency and use quality
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[0017] Such as figure 2 As shown, the piston of the present invention that avoids sticking is composed of a hemispherical part 4, a first part 1, a rounded frustum-shaped part 5, a second part 2 and a third part 3 from top to bottom, the first part 1, the second part The second part 2 and the third part 3 are cylindrical, and the upper side of the first part 1 is provided with a hemispherical part 4, and the transition between the first part 1 and the second part 2 is through a rounded frustum-shaped part 5, and the inverted The outer diameter of the top surface of the frustum-shaped part 5 is equal to the outer diameter of the first part 1, and the outer diameter of the bottom surface of the rounded truncated part 5 is equal to the outer diameter of the second part 2. The hemispherical part 4, the first part 1 , The rounded frustum-shaped part 5, the second part 2 and the third part 3 are integrally formed.
[0018] Such as image 3 As shown, the outer diameter of the firs...
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