Spherical Grinding Tools for Ball Valve Balls
A spherical grinding and sphere technology, which is used in spherical grinders, manufacturing tools, grinding workpiece supports, etc., can solve the problems of small contact area between the ejector pin 8 and the ejector pin hole, sphere pressure deformation, and large friction, so as to ensure the spherical surface Grinding effect, the effect of solving spherical deformation
Inactive Publication Date: 2016-06-01
GASKET SUZHOU VALVE COMPONENTS
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Problems solved by technology
However, since the friction between the grinding wheel and the sphere is relatively large, and the contact area between the thimble 8 and the thimble hole 7 is relatively small, the sphere is difficult to be driven to rotate
The general method is to increase the pressure of the thimble 8 on the sphere, but this is easy to deform the sphere
Method used
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Embodiment 1
[0015] Embodiment one: see figure 1 and image 3 As shown, a ball valve sphere, consistent with the prior art, is a sphere 1 with two parallel and symmetrical end faces 2, the distance between the two end faces 2 is smaller than the diameter of the spherical surface 3 of the sphere 1, so The spherical surface 3 matches and seals with the valve seat of the ball valve; a trunnion 4 protrudes outward on the two end surfaces 2, and the trunnion 4 is matched with the valve stem of the ball valve; There is a through hole 5 perpendicular to the axis of the trunnion 4, and the through hole 5 is used for medium circulation. The trunnion 4 is concavely provided with a long groove 6, and the center of the long groove 6 is aligned with the center of the sphere to be provided with a needle hole 7.
[0016] The spherical grinding tool of the ball valve spheroid includes a thimble 8, and the thimble 8 includes a tip, and the tip extends into the thimble hole 7, and a fixed block 9 is fixed...
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The invention discloses a manufacturing tool for grinding the sphere of a ball of a ball valve. The manufacturing tool comprises an ejector pin which comprises a pointed end extending into an ejector pin hole of the ball, a fixed block is fixed on the ejector pin and arranged perpendicular to the axis of the ejector pin, and a driving part is arranged at a position, far away from the axis of the ejector pin, on the fixed block, extended into an elongated slot of a trunnion of the ball and appressed to a side face of the elongated slot. The manufacturing tool for grinding the sphere of the ball of the ball valve has the advantages that positioning and driving rotation of the ball during sphere grinding are realized through matching of the ejector pin and the driving part, so that the problem of ball deformation in the prior art is solved, and sphere grinding effect of the ball can be well guaranteed.
Description
technical field [0001] The invention relates to a sphere tool for a ball valve, in particular to a tool for spherical grinding of a sphere. Background technique [0002] The ball valve is one of the most widely used valves. Its working principle is the same as that of the plug valve. It is opened and closed by rotating the valve core, but it is lighter than the plug valve and relatively small in size. It can be made into a large-diameter ball valve. The ball valve has reliable sealing, simple structure and convenient maintenance. The sealing surface and the ball are often in a closed state, which is not easy to be eroded by the medium, so it is widely used in petroleum, chemical, metallurgical and other industries. [0003] A ball valve generally includes a valve body, a valve seat, and a ball placed in the seat, see figure 1 , 2 As shown, the sphere generally includes two parallel and symmetrical end surfaces 2, the distance between the two end surfaces 2 is smaller than ...
Claims
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IPC IPC(8): B24B11/02B24B41/06
Inventor 罗伯托·斯卡蒂尼
Owner GASKET SUZHOU VALVE COMPONENTS