Rail regulation cut-off ball valve
A shut-off ball valve and orbital technology, which is applied to the cocks, valve devices, engine components and other directions including the shut-off device, can solve the problems of low leakage level and low service life, and achieve the effect of high sealing pressure
Inactive Publication Date: 2010-12-29
CHONGQING CHUANWU INSTR
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Problems solved by technology
[0005] In order to solve the problems of low service life and low leakage level in the existing ball valve technology, the present invention proposes a track-type regulating cut-off ball valve
Method used
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[0017] figure 1 It is a front cross-sectional view of the orbital regulating cut-off ball valve of the present invention. In the figure, 1 is the valve seat, 3 is the valve stem, 5 is the membrane actuator, 6 is the guide pin, 7 is the ball, 8 is the valve body support sleeve, and 9 is the valve body. As can be seen from the figure, the orbital regulating and shut-off ball valve of the present invention includes: a membrane actuator 5, a valve stem 3, a ball 7 and a valve body 9. The valve body 9 is provided with a straight through-hole flow channel, one end is the liquid inlet, and one end is the liquid outlet. The ball body 7 is arranged in the middle of the flow channel of the through hole of the valve body 9; the inner side of the liquid outlet is provided with a valve seat 1; the contact surface between the bottom of the ball body 7 and the valve body 9 is provided with a valve body support sleeve 8; It is inserted into the ball 7, and the other end is connected to the m...
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The invention provides a rail regulation cut-off ball valve which comprises a thin-film actuating mechanism, a valve rod, a ball body and a valve body, wherein the valve body is provided with a straight through hole flow channel one end of which is a liquid inlet and the other end of which is a liquid outlet; the ball body is arranged in the middle part of the straight through hole flow channel of the valve body; a valve seat is arrange at an inner side of the liquid outlet; a supporting sleeve for the valve body is arranged on a contact surface between the bottom of the ball body and the valve body; and one end of the valve rod is inserted into the ball body and the other end of the valve rod is connected with the thin-film actuating mechanism. The rail regulation cut-off ball valve has the following beneficial technical effects that sealing pressure is large, thus achieving tight seal between a sealing surface of the ball body and the valve seat; no friction occurs between the sealing surface of the ball body and the valve seat; and an oblique plane of a pin column of the ball body has a self-locking function, thus being capable of keeping not loose and unchanged.
Description
technical field [0001] The invention relates to a cut-off ball valve, in particular to an orbital regulating cut-off ball valve. Background technique [0002] At present, the most widely used ball valves on the market include O-type ball valves and cam-curved ball valves (eccentric ball valves): [0003] Conventional O-type ball valves, whether floating or fixed, the ball and the valve seat are always in contact and friction, resulting in large switching torque, easy damage (wear) of the sealing surface, etc., resulting in reduced service life of the valve; moreover, it is easy to cause damage in high temperature environments. The valve seat is locked with the spherical surface and cannot work properly. In addition, the valve has no adjustment function due to structural limitations. [0004] Eccentric ball valve, by changing the center of rotation and the center of the spherical surface, effectively avoids the friction between the valve seat and the spherical surface durin...
Claims
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IPC IPC(8): F16K5/06F16K5/08
Inventor 刘祥明邓飞明盛洪蔡杰浩龙秀云
Owner CHONGQING CHUANWU INSTR